Download - DATN-Nghien Cuu WinCC Ket Noi Va DK PLC
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TRNG I HC NHA TRANG
KHOA IN - IN T
N
TT NGHIP I HC
ti:
NGHIN CU WINCC KT NI VIU KHIN PLC
Sinh vin thc hin: PHM HUNH VINH
K50
Gio vin hng dn: Ths.BI THC MINH
Nha Trang, 6-2012
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TRNG I HC NHA TRANG
KHOA IN - IN T
N
TT NGHIP I HC
ti:
NGHIN CU WINCC KT NI VIU KHIN PLC
Sinh vin thc hin: PHM HUNH VINH
K50
Gio vin hng dn: Ths.BI THC MINH
Cn bphn bin:
Nha Trang, 6-2012
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BGIO DC V O TO
TRNG I HC NHA TRANG
CNG HO X HI CHNGHA VIT NAM
c lp Tdo Hnh phc
PHIU NHN XT N TT NGHIP
Hv tn ngi nhn xt:Chc danh: n vcng tc:Tn n: Nghin cu WinCC kt ni v iu khin PLCHv tn sinh vin: Phm Hunh Vinh MSSV: 50131995
Ngnh o to: Cng nghkthut in, in t H: Chnh quy Kha: 50
KIN NHN XT
1. Cht lng hnh thc
2. Cht lng ni dung
Khnh Ha, ngy thng nm 2012
Ngi nhn xt3. im nh gi:
im kt lun ca Hi ng chm n
im s im bng ch
Khnh Ha, ngy thng nm 2012Th k Hi ng Chtch hi ng
(K, ghi r htn) (K, ghi r htn)
Bng s Bng ch
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GVHD: Ths.Bi Thc Minh SVTH: Phm Hunh Vinh
LI CM N
hon thnh c n ny, u tin em xin gi li cm n n Ban Gim
Hiu, cc Thy C c bit l cc Thy C trong bmn in thuc Khoa in in
Ttrng i Hc Nha Trang, tn tnh chdy, truyn t kin thc cng nh to
iu kin thun li cho em trong sut qu trnh hc tp va qua.
Em xin chn thnh cm n thy Bi Thc Minh quan tm theo di, tn tnh
hng dn v ng vin em thc hin tt n tt nghip ny.
Mc d cgng nhng khng trnh khi sai st. Rt mong sng gp kin
ca cc thy c gio, cc bn c, cng nh cc bn ng nghip n c hon
thin hn ng gp ti liu cho cc kha sau ca ngnh v xy dng m hnh thc
tin p dng trong thc t.
Xin chn thnh cm n! Sinh vin
Phm Hunh Vinh
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GVHD: Ths.Bi Thc Minh SVTH: Phm Hunh Vinh
TM TT N
Vi ti Nghin cu WinCC kt ni v iu khin PLC, ti nghin cu v
phn mm WinCC v h thng PLC cng cng xy dng m hnh ca tng,
iu khin lp trnh bng PLC S7-200 v gim st trn ca WinCC. Vic sdng ngn
ng lp trnh cu trc LAD v kt ni iu khin gim st bng WinCC thng qua
phn mm PC Access.
n Nghin cu WinCC kt ni v iu khin PLC ngoi phn mu, kt
lun v kin ngh, danh mc ti liu tham kho v cc ph lc, ni cung chnh ca
on vn gm cc chng sau:
Chng 1: Tng quan
Nghin cu cc n tt nghip, cc m hnh vkt ni WinCC v iu khin
PLC ca cc trng i hc, ng dng trong thc t. nh gi nhng im tn ti
cc n , v t pht trin hng ti ca mnh.
Chng 2: Tng quan vphn mm WinCC
Nghin cu vphn mm WinCC v cch sdng n ng dng vo thc tin
ti.
Chng 3: Thit blp trnh PLC S7-200 CPU22X (SIEMENS)
Nghin cu v h PLC ni chung v PLC S7200 CPU22X (SIEMENS) ni
ring vcu trc phn cng, cu trc chng trnh v cch gi tnV y l c s
lp trnh chng trnh iu khin cho m hnh.
Chng 4: Kt ni v iu khin gia WinCC v PLC
Thc hin kt ni gia WinCC v PLC thng qua phn mm PC Access.
Chng 5: ng dng iu khin v gim st hthng
Thit km hnh ng, mca tng dng PLC S7-200 iu khin thng qua
giao din WinCC.
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GVHD: Ths.Bi Thc Minh SVTH: Phm Hunh Vinh
MC LC
LI CM N.............................................................................................................. i
TM TT N ......................................................................................................ii
DANH MC CC TVIT TT ...........................................................................viii
DANH MC BNG ................................ .................................................................. ix
DANH MC HNH ................................................................. .................................... x
MU: GII THIU CHI TIT NI DUNG TI ................................ ........... 1
A.t vn .......................... ............................................ .......................................... 1
B.Tnh cp thit ................................................................. .......................................... 1
C.Mc tiu nghin cu ................................................................................................ 1
D.Phng php nghin cu .......................................................................................... 2
E.Phm vi ti .......................................................................................................... 2
F.ng dng v nhu cu thc tca ti ............................................. ....................... 2
CHNG1: TNG QUAN ........................................................................................ 3
CHNG2: TNG QUAN VPHN MM WINCC .............................................. 4
2.1 Tng quan vphn mm WinCC ................................... ............................. ....... 4
2.2 Chc nng ca trung tm iu khin (Control Center)........................................ 6
2.2.1 Chc nng............................... ............................................ ....................... 6
2.2.2 Control Center ........................................................................................... 7
2.2.3 Nhng module chc nng................................................................ .......... 7
2.3 Cc khi nim thng dng trong WinCC ......................................................... 8
2.3.1 WinCC Explorer ........................................................................................ 8
2.3.2 Chc nng ca WinCC Explorer ................................................................ 8
2.3.3 Nhim vca qun l dliu (Data Manager) ............................................ 8
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GVHD: Ths.Bi Thc Minh SVTH: Phm Hunh Vinh
2.3.4 Nhim vca WinCC Explorer ................................................................. 8
2.3.5 Cc loi Project .......................................................................................... 9
2.3.6 Cc thnh phn c bn trong mt dn WinCC....................................... 10
2.4 Cc cng cson tho c bn ca WinCC ....................................................... 12
2.4.1 Thit kha ca WinCC (Graphic Designer) ...................................... 12
2.4.1.1 Chc nng ca Graphic Designer...................................................... 12
2.4.1.2 Cu trc ca Graphic Designer................................ ......................... 12
2.4.1.3 Thit lp mt ca s ha mi....................................................... 13
2.4.1.4 Cc ctnh ca chy thc ha..................................... ............... 142.4.1.5 Quan st thuc tnh ca cc i tng to ra trong mn hnh ha. 14
2.4.2 Cc i tng ca WinCC ....................................................................... 14
2.4.2.1 Cc i tng chun (Standard Object)............................................ 14
2.4.2.2 Smart Object ................................................................ ..................... 15
2.4.2.3 Cc i tng ca Window (Window Object)................................... 17
2.4.3 Hthng lu trv hin th(Tag Logging) .............................................. 18
2.4.3.1 Chc nng ca Tag Logging............................................................. 18
2.4.3.2 Thnh phn c bn ca trnh son tho Tag Logging........................ 19
2.4.4 Hthng cnh bo (Alarm Logging) ........................................................ 22
2.4.4.1 Gii thiu chung v h thng cnh bo (Alarm Logging).................. 22
2.4.4.2 Mt s khi nim trong son tho Alarm Logging................... ......... 24
2.4.5 Hthng bo co (Report Designer) ......................................... ............... 27
2.5 Hm trong WinCC ............................................. .............................................. 29
2.5.1 Nhm hm chun (Standard Function) ................................ ..................... 29
2.5.2 Nhm hm trong (Internal Function) ........................................................ 31
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GVHD: Ths.Bi Thc Minh SVTH: Phm Hunh Vinh
2.5.3 Dynamic Wizard ...................................................................................... 31
2.6 Truyn thng trong WinCC.............................................................................. 32
2.6.1 Truyn thng trn mng MPI ................................................................ ... 33
2.6.1.1 B x l truyn thng ............................... ........................................ 33
2.6.1.2 i tc truyn thng......................................................................... 34
2.6.1.3 D liu truyn thng................................................................ ......... 34
2.6.2 Truyn thng trn mng PROFIBUS ....................................................... 35
2.6.2.1 B x l truyn thng....................................................................... 35
2.6.2.2 Trnh iu khin truyn thng (Communication Driver) ................... 362.6.2.3 PROFIBUS DP .................................................................. ............... 37
2.6.2.4 PROFIBUS FMS .................................................. ............................ 38
CHNG 3: THIT BLP TRNH PLC S7-200 CPU22X (SIEMENS) ................ 40
3.1 Gii thiu tng qut vhPLC S7 ........................... ........................................ 40
3.2 c trng kthut ca PLC S7-200 CPU 22X .............................................. ... 41
3.2.1 a chcc vng nhca S7-200 CPU 22X ............................................. 41
3.2.2 Cu hnh vo ra ca S7-200 CPU22X AC/DC/RELAY ........................... 42
3.2.3 Cu hnh phn cng ................................................................................. 43
3.2.4 Khi truyn thng .................................................................................... 44
3.2.5 Card nh, pin, clock .................................................................. ............... 44
3.2.6 Kt ni ngoi vi vi PC ................................................ ............................ 45
3.3 Nhng khi nim c sca PLC S7-200 .......................................................... 47
3.3.1 Khi nim vng qut ca PLC ................................................................. 47
3.3.2 Truy cp dliu ti cc vng nhca S7-200 .......................................... 50
3.3.2.1 Truy cp d liu trc tip............................................. ..................... 50
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GVHD: Ths.Bi Thc Minh SVTH: Phm Hunh Vinh
3.3.2.2 Phn chia vng nh trong S7-200 ..................................................... 51
3.3.2.3 Truy cp d liu gin tip thng qua con tr..................................... 54
3.3.2.4 La chn ngn ng lp trnh ............................................................. 55
CHNG4: KT NI V IU KHIN GIA WINCC V PLC ........................ 57
4.1 Ci t S7-200 PC Access................................................................................ 57
4.2 Cch sdng S7-200 PC Access ..................................................................... 62
4.2.1 To skt ni cho mt PLC ............................. ........................................ 62
4.2.1.1 Thit lp cu hnh giao tip............................................................... 62
4.2.1.2 Thit lp cu hnh mi cho mt PLC.............................................. ... 654.2.2 To mc Item ............................................. .............................................. 66
4.2.3 Chy th, kim tra ................................................................................... 68
CHNG5: NG DNG IU KHIN V GIM ST HTHNG .................. 69
5.1 Yu cu cng ngh............................................. .............................................. 69
5.2 Thit k- lp trnh trn S7-200 ................................................................ ........ 69
5.2.1 S kt ni mch iu khin ................................................................. 69
5.2.2 Khai bo thit bng vo ra ............................. ........................................ 70
5.2.3 S thut ton ....................................................................................... 71
5.2.4 Mch lp trnh LAD vi S7-200............................................................... 72
5.3 Thit kto kt ni trn S7-200 PC Access....................................... ............... 76
5.4 Thit km hnh gim st trn WinCC V7 ....................................... ............... 78
5.4.1 To dn mi .......................................................................................... 78
5.4.2 Xy dng m hnh gim st ..................................................................... 84
5.4.3 Thit lp thuc tnh cho cc i tng ..................................................... 89
5.4.3.1 Thit lp thuc tnh cho ng c ko ca.......................................... 89
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GVHD: Ths.Bi Thc Minh SVTH: Phm Hunh Vinh
5.4.3.2 Thit lp thuc tnh cho nt nhn Star v Stop .................................. 90
5.4.3.3 Thit lp thuc tnh cho cc nt nhn cm bin................................. 93
5.4.4 Chy m phng ........................................................................................ 95
KT LUN V KIN NGH..................................................................... ............... 97
Ti liu tham kho ..................................................................................................... 98
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GVHD: Ths.Bi Thc Minh SVTH: Phm Hunh Vinh
DANH MC CC T VIT TT
PLC: Programmable Logic Controller. Biu khilogic lp trnh c.
WinCC: Windows Control Center. Trung tm iu khin.
HMI: Human Machine Interface. Giao tip ngi my.
MPI: Message Passing Interface. Giao din a im.
ROM: Read Only Memory. Bnhchc.
RAM: Random Access Memory. Bnhtm thi.
CPU: Central Processing Unit. Bxl trung tm.
PC: Personal Computer. My tnh c nhn.DCE: Data Communication Equipment. Thit btruyn thng dliu.
DTE: Data Teminal Equipment. Thit bu cui.
PIR: Passive InfraRed Sensor. Cm bin hng ngoi.
CS: Configuration System. Hthng cu hnh.
RT: Run Time. Thi gian thc thi.
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GVHD: Ths.Bi Thc Minh SVTH: Phm Hunh Vinh
DANH MC BNG
Bng 2.1 Cu hnh ci t WinCC ............................................................................... 5
Bng 2.2 Bxl truyn thng ................................................................................. 34
Bng 2.3 Slng PLC c a chbi bxl trong trm WinCC ....................... 35
Bng 2.4 Bxl truyn thng c sn cho php kt ni trm WinCC ....................... 35
Bng 2.5 Giao thc truyn thng cho cc trnh iu khin ................................ ......... 36
Bng 2.6 Slng cc kt ni truyn thng ............................................................... 36
Bng 2.7 Danh sch phn mm lin kt truyn thng trm WinCC thng qua
PRIFIBUS DP ........................................................................................................... 38
Bng 2.8 Danh sch phn mm lin kt truyn thng trm WinCC thng qua
PROFIBUS FMS ....................................................................................................... 39
Bng 3.1 Mt sthng skthut ca S7-200 CPU22X ........................................... 41
Bng 3.2 Cc module mrng ca S7-200 CPU224 ................................................ .. 43
Bng 5.1 Khai bo bin vo ra ................................................................................... 70
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GVHD: Ths.Bi Thc Minh SVTH: Phm Hunh Vinh
DANH MC HNH
Hnh 2.1 M hnh truyn thng qua mng MPI .......................................................... 34
Hnh 2.2 M hnh truyn thng qua mng Profibuss DP ................................... ......... 37
Hnh 2.3 M hnh truyn thng qua Profibus FMS ................................ ..................... 38
Hnh 3.1 CPU 224 AC/DC/RLY ................................................................. ............... 40
Hnh 3.2 S u ni dy vo ra ca PLC S7-200 CPU224 .................................... 42
Hnh 3.3 Cu hnh phn cng PLC S7-200 CPU 214 ................................................. 43
Hnh 3.4 Hnh dng ca cp v cng tc chn chtruyn ...................................... 45
Hnh 3.5 Kt ni my tnh vi CPU S7200 RS232/PPI Multi-Master....................... 46
Hnh 3.6 Hnh dng cp USB/PPI .................................................. ............................ 47
Hnh 3.7 Vng qut ca PLC ................................................................ ..................... 47
Hnh 3.8 Chu kqut S7 200 .................................................................................. 49
Hnh 3.9 Lp trnh bng ngn ngLADDER ............................................................. 55
Hnh 3.10 Lp trnh bng ngn ngSTL.................................................................... 56
Hnh 3.11 Lp trnh bng ngn ngFBD ................................................................ ... 56
Hnh 4.1 Mfile ci t ............................................... .............................................. 57
Hnh 4.2 La chn ngn ng..................................................................................... 57
Hnh 4.3 Qu trnh ci t .......................................................................................... 58
Hnh 4.4 Gii nn ci t ........................................................................................... 58
Hnh 4.5 Ci t chng trnh ..................................................................... ............... 59
Hnh 4.6 La chn a ci t ................................................................................. 59
Hnh 4.7 Qu trnh ci t ci t ................................................................ ............... 60
Hnh 4.8 Ci t Driver ............................. ................................................................. 60
Hnh 4.9 La chn cng kt ni .................................................................. ............... 61
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GVHD: Ths.Bi Thc Minh SVTH: Phm Hunh Vinh
Hnh 4.10 Kt thc ci t ......................................................................................... 61
Hnh 4.11 Giao din chng trnh PC Access ................................ ............................ 62
Hnh 4.12 Bc chn cng kt ni ................................................. ............................ 63
Hnh 4.13 Chn kt ni cho chng trnh ................................ .................................. 63
Hnh 4.14 Thit t cho kt ni ................................................................... ............... 64
Hnh 4.15 Chn cng USB cho kt ni ...................................................................... 64
Hnh 4.16 Thit lp cu hnh cho PLC ....................................................................... 65
Hnh 4.17 t tn cho PLC ........................................................................................ 65
Hnh 4.18 To Item .................................................................. .............................. .... 66
Hnh 4.19 t tn cho Item ........................................................................................ 66
Hnh 4.20 Hon tt qu trnh t tn .......................................................................... 67
Hnh 4.21 a Item to vo test ................................................ ............................ 67
Hnh 4.22 Kim tra qu trnh test ................................................................ ............... 68
Hnh 5.1 S kt ni PLC ....................................................................................... 69
Hnh 5.2 S gii thut ........................................................................................... 71
Hnh 5.3 Chng trnh cho hthng ................................................................. ......... 74
Hnh 5.4 Chn loi CPU ca PLC .................................................. ............................ 75
Hnh 5.5 Chn nt dowload np chng trnh cho PLC ........................................ 75
Hnh 5.6 La chn PLC ............................................................................................. 76
Hnh 5.7 t tn cho PLC .......................................................................................... 76
Hnh 5.8 Chn Item ................................................................................................... 76
Hnh 5.9 t tn cc bin ............................................. .............................................. 77
Hnh 5.10 Kt qucc bin to .................................................. ............................ 78
Hnh 5.11 Chy thv kim tra ................................................................................. 78
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GVHD: Ths.Bi Thc Minh SVTH: Phm Hunh Vinh
Hnh 5.12 Giao din WinCC ...................................................................................... 79
Hnh 5.13 To dn mi ............................................. .............................................. 80
Hnh 5.14 Chn Add New Driver .............................................................................. 80
Hnh 5.15 Chn mng kt ni .................................................................................... 80
Hnh 5.16 Thit lp kt ni ........................................................................................ 80
Hnh 5.17 Chn mng kt ni vi PC Access ............................................................. 81
Hnh 5.18 Chn kt ni S7200.OPCServer ................................ ................................ 81
Hnh 5.19 Chn Server .............................................................................................. 82
Hnh 5.20 Chn S7-200 ............................................................................................. 82
Hnh 5.21 t tn kt ni ............................................. .............................................. 82
Hnh 5.22 Add tag S7200_OPCServer ............................... ........................................ 83
Hnh 5.23 Add cc Tag vo WinCC ................................................ ........................... 83
Hnh 5.24 To Graphics Designer .................................................. ............................ 84
Hnh 5.25 t tn cho Graphics Designer ............................................. ..................... 84
Hnh 5.26 MGraphics Designer .............................................................................. 84
Hnh 5.27 Giao din Graphics Designer ............................. ........................................ 85
Hnh 5.28 Ly th vin linh kin ............................................................................... 85
Hnh 5.29 Giao din ca th vin ................................................................ ............... 86
Hnh 5.30 Ly ca trong Architechtural ............................. ........................................ 86
Hnh 5.31 Ly motor ................................................................ .................................. 87
Hnh 5.32 Ly cm bin ............................................... .............................................. 87
Hnh 5.33 Ti nt nhn .............................................................................................. 87
Hnh 5.34 t tn cho nt nhn ................................................................... ............... 88
Hnh 5.35 Giao din hon thnh thit k.................................................................... 88
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GVHD: Ths.Bi Thc Minh SVTH: Phm Hunh Vinh
Hnh 5.36 Thit lp thuc tnh cho ng c................................ ............................... 89
Hnh 5.37 Chn DCMOCUA ................................................................ ..................... 89
Hnh 5.38 Thit lp hiu ng ..................................................................................... 90
Hnh 5.39 Thit lp thuc tnh cho nt Start ............................................................... 90
Hnh 5.40 Thit t trong SetTagBit .......................................................................... 91
Hnh 5.41 Chn Tag_Name cho thit lp ........................... ........................................ 91
Hnh 5.42 Chn Tag START cn thit lp ............................................ ..................... 91
Hnh 5.43 t gi trcho Value ................................................................................. 92
Hnh 5.44 SetTagBit sau thit lp START ................................................................. 92
Hnh 5.45 Thit lp Tag_Name v value cho STOP ................................................ ... 92
Hnh 5.46 SetTagBit sau thit lp START v STOP ................................................ .. 93
Hnh 5.47 Kt ni hon tt ......................................................................................... 93
Hnh 5.48 Thit lp Tag cho nt nhn cm bin ......................................................... 93
Hnh 5.49 SetTagBit lc cha kt ni ........................................................................ 94
Hnh 5.50 Chn Tag Name cho kt ni .............................. ........................................ 94
Hnh 5.51 Chn Tag cm bin cho kt ni ................................................................. 94
Hnh 5.52 Thit t gi tr1 ....................................................................................... 95
Hnh 5.53 Tag mi thit t................................................................................... 95
Hnh 5.54 Thit t gi tr0 ....................................................................................... 95
Hnh 5.55 Nt nhn Runtime ..................................................................................... 96
Hnh 5.56 Giao din mn hnh m phng ........................... ........................................ 96
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GVHD: Ths.Bi Thc Minh SVTH: Phm Hunh Vinh
M U: GII THIU CHI TIT NI DUNG TI
A. t vn Vi spht trin mnh ca khoa hc kthut, nc ta v ang xy dng ngy
cng nhiu nh my a dng vcng ngh. Ngnh tng ha cng khng ngng pht
trin p ng nhu cu ca sn xut. ng dng cng ngh tng vo trong sn
xut l xu hng tt yu ca Vit Nam ang trn ng pht trin cng nghip hi
nhp cng thgii. Hin nay, hng lot cc nh cung cp cng ngh v ang pht
trin nhiu thit b, chng trnh gim st v iu khin dy chuyn sn xut thay
thdn cc phng php iu khin bng tay nh cc module iu khin lp trnh nh
Zen, Logo, cc PLC...
Trong vic nghin cu WinCC kt ni v iu khin PLC nhm thay thdn
sc lao ng ca con ngi qua cc thit bnhgn, gi thnh hnhng rt hin i
nhm nng cao hiu qu, tit kim thi gian v nng cao nng xut trong cng vic.
Tnhng vn ny, em chn ti NGHIN CU WINCC IU KHIN
V KT NI PLC.
B. Tnh cp thitHin ti, trong cc nh my, x nghip cng nghip u ng dng thit b lp
trnh iu khin hot ng my mc, dy chuyn sn xut. Tuy nhin a phn nhp
dy chuyn sn xut ca nc ngoi, gi thnh cao, ks trong nh my cha c kh
nng sa cha khi bh hng m chyu l sdng iu khin.
Nghin cu, thit kgiao din ngi dng WinCC lm cho qu trnh iu khin,
gim st ca nhn vin kthut ngy cng thun tin, an ton hn, dsa cha, gi
thnh thp.
C. Mc tiu nghin cuNghin cu WinCC iu khin v kt ni PLC.Xy dng m hnh thc tkt ni v iu khin trn my tnh thng qua giao
din WinCC.
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GVHD: Ths.Bi Thc Minh SVTH: Phm Hunh Vinh
CHNG2: TNG QUAN V PHN MM WINCC
2.1 Tng quan vphn mm WinCCNgy nay cc thit b iu khin kh trnh PLC (Programable Logic Control)
c thay th ln cho cc thit biu khin qu trnh c thc hin vic tng
hon ton mt qu trnh cng ngh, thc hin vic tch hp mng cng nghip
(Industrial Ethernet). Trn thgii cc hng vtng ha nh Omron (Nht), Allen
Bradly (M), Siemens (c)khng ngng phn u a ra nhng sn phm mi
trong lnh vc ny vi nhng tnh nng ca cc PLC ngy cng mnh, tc s l
nhanh p ng c cc nhu cu trong nn cng nghip vi cc bi ton iu khin
kh v phc tp cao. Hin nay trn th trng Vit Nam, PLC ca hng Siemens
c sdng kh nhiu trong cc lnh vc nh in lc, Giy, Xi mng,Cc chng
loi PLC ca hng kh phong ph nh S5, S7-200, S7-300, S7-400,c sn xut a
dng ty theo yu cu sdng v phc tp ca bi ton iu khin. Tuy nhin, ta
thy trong cng nghip vn giao din ngi my HMI (Human Machina
Interface) rt quan trng trong vic iu khin v gim st qu trnh sn xut. Hng
Siemens a ra mt s phn mm xy dng giao din ngi - my nh
Protool/Protool CS, WinCC c tnh linh hot v mm do thc hin gii php k
thut thc hin giao din ngi - my. Nhng phn mm ny khng nhng c thsdng cho cc thit bca chnh hng m n cn mrng tng thch vi cc thit b
ca cc hng khc nh ca GE (General Electric), Allen Bradly, Misubishi
Electric,thng qua cc knh iu khin ring.
WinCC l mt h thng iu khin trung lp c tnh cng nghip v c tnh k
thut, hthng mn hnh hin thha v iu khin nhim vtrong sn xut v t
ng ha qu trnh. Hthng ny a ra nhng modul chc nng tch hp cng nghip
cho hin thha, nhng thng bo, nhng lu tr, v nhng bo co. N l mttrnh iu khin mnh, nhanh chng cp nht cc nh, v nhng chc nng lu tran
ton bo m mt tnh li ch cao em li cho ngi vn hnh mt giao din trc quan
dsdng, c khnng gim st v iu khin qu trnh cng nghtheo chthi
gian thc.
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Ngoi nhng chc nng h thng, WinCC a ra nhng giao din mcho cc
gii php ca ngi dng. Nhng giao din ny lm cho n c th tch hp trong
nhng gii php tng ha phc tp, cc gii php cho cng ty m. Struy nhp ti
c sdliu tch hp bi nhng giao din chun ODBC v SQL, slng ghp nhngi tng v nhng ti liu c tch hp bi OLE 2.0 v OLE Custom Controls
(OCX). Nhng c chny lm cho WinCC l mt i tc dhiu, dtruyn ti trong
mi trng Windows.
xy dng c giao din HMI bng phn mm WinCC th cu hnh phn
cng phi bao gm thit bPLC S7 - xxx v cu hnh v cu hnh phn cng ti thiu
ca my tnh cho vic sdng phn mm WinCC v cc thit bkhc phc vcho
vic truyn thng.
WinCC htrcho tt ccc my tnh - nhng nn tng PC thch hp. Mc d gi
tra ra cho cu hnh ti thiu nhng bn phi nhm t c cu hnh khuyn co
t hiu quti u.
Bng 2.1 Cu hnh ci t WinCC
Tn thit b Yu cu ti thiu Nn sdng
CPU Pentum II 266 MHz Pentum II 400 MHz
RAM 96 MB 128 MB
Graphics Controller SVGA (4MB) XGA (8MB)
Resolution 800*600 1024*768
Hard Disk 500 MB trng >500 MB
WinCC da trn hiu hnh MS 32bit Windows 95 hoc Windows NT, bo
m phn ng nhanh x l nhng s kin v chng li smt mt d liu bn
trong, to ra mt san ton cao mt dn nhiu ngi dng. Windows NT cng a
nhng hm c to ra cho san ton v phc vnh nhng thao tc c scho Server
trong mt d n WinCC nhiu ngi s dng. phn mm WinCC l mt ng dng
32bit pht trin vi cng nghphn mm hin i, hng i tng nht.
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2.2 Chc nng ca trung tm iu khin (Control Center)2.2.1Chc nng
Control Center cha tt c cc chc nng qun l cho ton h thng. Trong
Control Center, c tht cu hnh v khi ng module Run-time.
a. Nhim vqun l dliuChc nng qun l dliu cung cp hnh nh qu trnh vi cc gi trca tag, tt
chot ng lin quan n qun l dliu u chy trn mt background (nn).
b. Nhim vca Control CenterControl Center c cc nhim vchnh:
Lp cu hnh hon chnh.Hng dn gii thiu vic lp cu hnh.Thch ng vic n nh, gi v lu trcc dn (Project).Qun l cc dn (Project).C kh nng ni mng v son tho cho nhiu ngi s dng trong mt
Project.
Qun l phin bn.Din tbng thcho dliu cu hnh.iu khin v t cu hnh cho cc hnh v/cu trc hthng.Thit lp vic ci t ton cc.t cu hnh cho cc chc nng nh vc bit.To v son tho cc tham kho an cho.Phn hi ti liu.Bo co trng thi hthng.Thit lp hthng ch.Chuyn gia Run-time v cu hnh.
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Kim tra chm phng, trgip thao tc t cu hnh dliu bao gm:dch hnh v, m phng tag, hin thtrng thi v thit lp thng bo.
2.2.2Control CenterWinCC Explorer trong Control Center: giao din ha cho cu hnh di
Windows 95 v Windows NT.
Qun l d liu: cung cp nh qu trnh vi nhng Tag gi tr theo cc loisau:
Chu k. Chu kvi sthay i. iu khin skin thi gian.
Truyn dliu tnhng hthng tng ha theo nhng cch sau: Nhn. Yu cu.
2.2.3Nhng module chc nngHthng ha (Graphich Designer): trnh by v ni qu trnh bng ha.Son tho hot ng (Global Scrip): lm mt dn ng cho nhng yu cu
c bit.
Hthng thng bo (Alarm Logging): xut cc thng bo v hi p.Son tho v lu trnhng gi trphp o (TagLogging). Son tho nhng gi trphp o v ct gichng trong thi hn lu di.
Son tho dliu hng ngi dng v ct gichng lu di.Hthng bo co (Report Designer): bo co nhng trng thi hthng.Control Center lm cho ta c thnh hng xuyn qua nhng ng dng WinCC
v dliu ca n vi chmt t thao tc. Control Center thao tc tng tging nh
Explorer trong Windows. Trong WinCC bao gm 2 c sdliu: mt dnh cho vic
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nh dng hthng CS (Configuration System), mt dnh cho vic chy thi gian thc
RT (Run time) khi chy WinCC c sdliu ny lun c ti vo v chy song song
vi nhau.
2.3 Cc khi nim thng dng trong WinCC2.3.1WinCC Explorer
N xut hin khi khi ng WinCC. Tt ccc phn ca WinCC u c khi
ng ty. Tca sWinCC Explorer c thxm nhp vo tt ccc thnh phn
m mt dn giao din ngi my cn c cng nh vic xy dng cu hnh cho cc
phn ring l.
2.3.2Chc nng ca WinCC ExplorerWinCC explorer gm tt ccc chc nng qun l phc vvic vo hthng ca
WinCC. Ti y bn c tht cu hnh (Computer, Tag,) v khi ng module
Run-time.
2.3.3Nhim vca qun l dliu (Data Manager)y l mt phn ca WinCC explorer, n cung cp cc hnh nh qu trnh, b
m (Proces Image) cho cc Tag.
2.3.4Nhim vca WinCC ExplorerTo mt dn mi.t cu hnh trn vn.Gi v lu trdn.Qun l dn: m, lu, di chuyn v copy.Chc nng n bng mng cho nhiu ngi s dng (Client - Server
Environment).
Hin thcu hnh dliu.iu khin v t cu hnh ca cp bc ca cc nh, cu trc hthng, chng
hn nh bng cch thhin cy th mc.
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Ci t thng stng thnh ngn ng, hthng, ng dn ngi dng.t cu hnh cho vtr chc nng c bit ca ngi dng.Phn hi ti liu (feedback documentation).Lp bo co trng thi ca hthng.Chuyn i gia t cu hnh v chy thc (run time).Thcc module nh m phng khi chy (simulation), trgip hot ng t
cu hnh dliu, chuyn i cc picture, thhin trng thi v to thng bo.
2.3.5Cc loi ProjectWinCC cung cp nhiu loi dn khc nhau ty theo yu cu cng vic v quy
m dn.
Dn n (Single-User Project)Mt dn n thc cht l mt trm vn hnh n, vic to cu hnh, chy thi
gian thc, cng nh kt ni vi bus qu trnh v lu trd liu ca dn u c
thc hin trn my tnh ny.
Dn nhiu ngi dng (Multi-User Project)Mt dn nhiu ngi dng c c im cu hnh nhiu my khch (client) v
mt my ch (server), tt cchng lm vic trong cng mt d n. Ti a 16 client
c truy cp vo mt server. Cu hnh c th t trong server hoc trong mt vi
client. Dliu ca dn xem nh l cc hnh nh (picture), cc tag, dliu c lu
trtrong server v cung cp cho cc client. Server c kt ni vi bus qu trnh v d
liu c sl y. Vn hnh hthng c thc hin tcc client.
Dn nhiu my khch (Multi-Client Project)Dn nhiu my khch l mt loi dn m c thtruy cp vo nhiu server.
Cc server c lin kt c dn ring ca chng. Cu hnh ca project server c
thc hin trong server hoc trong cc client, cu hnh ca dn multi-client c thc
hin trong dn multi-client.
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Mt server c thtruy cp ti a 16 client. Mt dn multi-client c thtruy cp
c ti a 6 server. C ngha l d liu ca 6 server c thc gim st v iu
khin trn mt mn hnh ca dn multi-client.
2.3.6Cc thnh phn c bn trong mt dn WinCCComputer: qun l tt ccc WorkStatio v Server nm trong Project.Tag managerment: l khu vc qun l tt cc knh, cc quan h logic, cc
tag process, tag internal v tag groups.
Data type: cha cha cc loi dliu c gn cho cc Tag v cc knh khc.Editor (cc trnh son tho): cc trnh bin tp c lit k trong vng ny
dng son tho v iu khin mt d n hon chnh bao gm GraphicsSystem (Graphics Designer) dng lm cc giao din nh, Global Scrips
dng hin thng cho cc yu cu c bit, cc Message System nh cnh
bo (Alarm Logging), thu thp v lu tr cc gi tr o (Tag Logging), h
thng bo co (Report Designer), giy php sdng (User administration) v
cc Text library. Tt ccc modul ny u thuc hthng WinCC nhng nu
khng cn thit th khng nht thit phi ci t ht.
Sdng cc trnh son tho son tho v iu khin mt dn hon chnh.
Cc thnh phn c lit k u l cc trnh son tho chun ca WinCC.
Alarm Logging: m nhn a tin tqu trnh chun b, hin th, nhn, lu trnhng tin tc theo mt quy lut.
User Administration: kim tra giy php truy nhp cho cc Group v Server.Text Library: cha ng cc ngn ngphthuc vn bn m chng ta to ra.Report Designier: cung cp mt bo co tng hp m c thdng bo co
nh dliu sdng, cc gi trhin thi v gi trct gi, bn tin hin thi v
bn tin lu tr, v cc vn bn ca bn thn hthng.
Global Scrips: cho php to ra mt dn ng c bit theo yu cu. Trnhson tho ny cho php ta to ra cc hm ging nh trong ngn ngC v cc
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hnh ng m c thsdng trong sut dn hoc qua nhiu dn phthuc
trong cng loi .
Tag Logging: o cc gi trqu trnh, lu trchng di hn.Graphics Designer: cung cp cc biu tng ha v ni to thnh qu
trnh.
Trong phn mm WinCC c mt khai nim c bit quan trng m chng ta cn
phi nm vng khi xy dng mt hthng iu khin gim st bng WinCC l khai
nim vTag v Tag Groug.
nh ngha Tag: Tag l mt thnh phn trung gian cho vic truy nhp cc bin
qu trnh.Trong mt dn th Tag chmang mt tn duy nht v mt loi dliu. WinCC
Tag c gn bi cc mi quan hLogic, ci mi lin hc nh r bi knh phn
phi cc gi trqu trnh ti cc Tag sdng ti cc thi im ni. WinCC Tag cha
trong mt csdliu ca mt dn rng. Sau khi chy WinCC tt ccc Tag u
c ti vo v tng ng vi cu trc Run-time c dng ln.
Tag Groug dng tchc cc Tag thnh cc cu trc. Tt ccc Tag u c th
c tchc trong cc nhm Tag tng sr rng ca dn.
WinCC Tag m tmt dng dliu thnh phn loi duy nht trong mt d
n v nhng lut cho php truy cp dliu ny.
Ni chung, dliu qun l c skhc nhau gia 2 loi Tag:
Internal Tag (Tag trong):l cc khi nh trong WinCC c phn chia theochc nng nh mt PLC. Chng c th c tnh ton v chnh sa trong
WinCC v khng c a chtrn lp PLC.
External Tag (Tag ngoi): gn cc a chv kt ni trong cc lp PLC.Trong loi Tag ny c mt khung c bit c gi l Tag dliu th (Raw Data
Tag-RDT). Theo mt quan im chung, d liu th ph hp vi mt dng khung d
liu thng bo trn mc vn chuyn, RDT khng hin th c trong Graphics
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Font Palettes.Cc bng v cc thanh cng cphc vcho thao tc vi graphic designer:
Menu Bar. Standard Palettes. Status Bar. Layer Bar.
Cc hp thoi phc vt cc thng sv thay i thuc tnh i tng. Bng mu (Color Palettes):
Gm 16 mu c bn. Sdng i mu ca i tng. Sdng thm vo cc mu ty chn.
Bng i tng: bng ny gm c nhiu i tng c sp xp thnh ccmc con sau y:
Cc i tng chun (Standard bject) gm cc hnh a gic, chnht,elip,
Cc i tng thng minh (Smart Object) gm c cc i tng nhng,cc trng vo/ra, cc i tng ha, cc cng chin th, cc i
tng ba chiu,
Cc i tng Window (Window Object) gm c cc Button, CheckBox, Option Group, Slider. y l cc i tng nhm h tr cho
ha.
2.4.1.3Thit lp mt ca sha miTrong ca sWinCC Explorer, kich p ln Edittor, khi cc thnh phn ca
Edittor sc lit k ra. Vo Graphic Disigner bng cch kch chut phi v chn
Open. Sau khi khi to, trn thanh cng cca Graphic Disigner chn New.
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Static text (dng vn bn tnh). thc hin cc dng vn bn, khi chy thcc ththay i vtr, ni dung ca hp vn bn.
2.4.2.2Smart Objectng dng Window (Application Window)
L nhng i tng thng bo h thng (Alarm Logging), lu tr h thng
(Tag Logging), bo co hthng (Print Jobs) cng nh cc ng dng ca Global Scrip.
Application Window mra nhng ca sng dng v qun l n hin thv vn
hnh.
Picture WindowL nhng i tng c to ra trong Graphic Disigner. Cc i tng
c t cu hnh theo v tr, kch thc v cc c tnh ng khc. Chng hn mt
c tnh quan trng l truy nhp hnh nh c hin th trong Picture Window bng
cch thay i thuc tnh ng Picture name lc chy thc th ni dung ca ca sc
thchy c thay i theo.
iu khin nhng v lin kt i tng (OLE Control)Sdng OLE Control cung cp cc cng cWindow (nh nt bm, hp
la chn). Cc thuc tnh ca n c hin thtrong ca sObject Properties v tab
Event. Cc thuc tnh ny c thc n bn trong ca strn.
i tng lin kt v nhngGraphic Designer cho php chn cc i tng nhng vo ca slm vic ca
n. Trong mode cu hnh bn c thn bn mt i tng vi ng dng OLE thch
hp. Sau khi bn hon thnh vic thay i lin kt i tng nhng mt cch cht
ch, bn phi cp nht kin kt bng tay sao cho ph hp vi cc thay i c th
hin. Tuy nhin bn khng c php n bn trong lc chy runtime.
Trng vo/ra (I/O File)S dng nh mt trng vo hoc mt trng ra hoc nh l mt trng
vo/ra. Cc dng dliu cho php sdng vi I/O File:
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Nhphn (Binary). H16 (Hexadeccimal). Hthp phn (Decimal). Xu k t(String).
Bn cng c thnh r gi trgii hn, chnh l trng vo hoc trng ra
hoc trng vo/ra.
BarThuc tnh nhm Smart Object. Thuc tnh ca n nh hng n sxut hin
v tnh nng ca n. N thhin nhng gi trbng thc quan hvi gii hn cao,
thp hoc hon ton chl miu tbng ha hoc phi hp thhin nhng gi tr
vi tldo bn nh ngha.
Hin thtrng thi (Status Display)Sdng hin thbt k con s ca nhng trng thi khc nhau no. Cho
php th hin ng bng cch ni n vi gi tr ca tt c cc Tag tng ng vi
nhng trng thi khc nhau. Bn c thn nh bt k con sno trong khon t0 ti
222-1.
Danh sch vn bn (Text List)Sdng Text List a gi trcho vn bn. N c thsdng nh mt danh
sch vo (Vo l danh sch, ra l gi tr) hoc danh sch ra (Vo l gi tr, ra l vn
bn) hoc phi hp dah sch/vn bn. Dng sliu l thp phn, nhphn hoc bit d
liu u c thsdng.
Loi danh sch Decimal thhin vn bn n nh ti gi trra. Khi bncho vo mt Text th gi tr c chnh sc quyn ti qun l d
liu.
Loi danh sch Binary thhin mt vn bn c chnh ti mt bit cagi trra nu bit c set (t gi trln 0 hoc 1). Trong trng hp ny
chmt bt ca gi trra c set. Vn bn c chnh ti bit no th bit
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y c a ra. Khi vo mt vn bn, qun l dliu nhn gi trvo v s
set chnh xc cho bit tng ng vi vn bn vo.
Loi danh sch Bit thhin mt vn bn m n lin quan ti nhng trngthi ca bit nh ngha trong min gi trra.
3D BarN thhin nhng gi trc quan hha vi mc cao v mc thp. C th
t cu hnh loi thhin 3D theo bt k cch no m bn mun.
Nhm hin th(Group Display)Cung cp thhin cch quy ttheo cp bc ca trng thi hin ti ca nhng
loi thng bo nht nh mc d khng c s lin quan ti thng bo h thng viWinCC.
2.4.2.3Cc i tng ca Window (Window Object)Nt bm (Button)
Sdng iu khin s kin qu trnh. N c hai trng thi n xung v
khng n. Lin kt ti qu trnh bng cch thc hin cc thuc tnh ng tng ng.
Hp chn (Check-Box)N c sdng khi m bn cn c 1 hay nhiu la chn bng cch kch ln
tng trng hp m bn cn. Cho php lin kt mm do vi qu trnh bng cch thc
hin nhng thuc tnh ng tng ng.
Nhm la chn (Option Group)Tng tnh Check-Box nhng l la chn n.
Nt trn (Round Button)L mt cng cging nh Button phc vcho vn hnh skin qu trnh.
SliderL cng cin hnh chuyn ng phc vcho iu khin qu trnh (v d
iu khin nhit , mc nc,...). Phm vi iu khin nm gia gi trnhnht v gi
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Labor Data: gm c tt ccc loi dliu c vo bng tay. Machine Data: cung cp vtrng thi my mc. Process Data: dliu qu trnh. Quality Data.
Cc phng php lu trgi trqu trnh.Dliu qu trnh l nhng gi tro c thu nhn tcc sensor c bit.
thc hin trong WinCC, vng lu trhay cc Tag sc gn cho cc dliu ny.
Dliu lu trc iu khin thng qua mt sphi hp gia skin v s
chu k. Khi t cu hnh ca h thng sxc nh loi d liu no nn lu tr trong
mi ni.
C thla chn mt trong cc phng php lu trdi y:
Gim st Tag theo mt chu klu trlin tc-gi tro. Chp nhn lu trkhng theo chu kgi trhin thi. La chn chu klu trlin kt vi iu khin skin cng vi iu khin
lu trqua chu k.
Cc bc son tho Tag Logging. Trong ca shng ca dn kch p vo Editor hin thdanh sch
tt ccc n bn.
Ci t. Kch chut phi vo nt Tag Logging. Khi Menu xut hin hy chn Open. Sla chn ny skhi ng Tag Logging v by gita c thkhi to.
2.4.3.2Thnh phn c bn ca trnh son tho Tag LoggingTrnh son tho Tag Logging gm c cc thnh phn sau:
Time
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Tag Logging gii thiu 2 loi hthng timer khc nhau:
Timer thu nhn (Acquisition Timer)L khong thi gian m trong nhng gi trthi gian ny c sao chp
bi Tag tnh qu trnh ca qun l dliu (Data Manager).
Timer lu tr(Archiving Timer)L khong thi gian m trong dliu c np vo vng lu tr. Gi
trsau cng lun c np vo trong mt khong thi gian lu tr. Gi tru thuc
vkhong thi gian trc .
Bphn lu tr(Archives)Th mc lu trc cha thng smc nh cho vic to ra mt bphn lu
trv xc nh cc Tag lin quan trong sut mi quan hgia chng vi qun l d
liu ca Tag.
To ra v son tho mt hay nhiu lu trc thc hin trong vng t cu
hnh Archive. Ti mt thi im mt lu trmi cng c np vo dn.
Trong WinCC cho php sdng 3 dng lu tr:
Lu trgi trqu trnh (Process Value Archive)Cc gi trca qu trnh c thu nhn vmi trng WinCC xl tnh
ton thng qua mi lin h logic l cc Tag qu trnh. Mi mt thnh phn lu tr
nhn cc Tag ca qun l dliu. Mi lin hgia cc gi trqu trnh v lu trc
hnh thnh khi lu trm bn to ra c ni vi mt Tag.
Lu trdng nn (Compressed Archive)Lu trdng ny nn d liu v phi hp cc s liu mt cch hiu qu.
Theo cch ny cc gi tro c thc thu thp trc tip v c sao chp (copy)
ngay sau .
Lu trca ngi sdng (User Archive)
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t cc thng stng thcho Trend. Ni Trend vi Tag c hin th. t thng sca trc x,y. t cc thuc tnh ca Trend
To ca sng dng trong Graphic Disigner. Trong Graphic Designer ni ca sng dng (Aplication window) ti
Trend t cu hnh.
Phm vi ca Trend c thhin
Thhin tnh ca th:C th cho php th hin th trong mt on thi gian m ta t cho
Trend. Cu hnh ny c t trong X-Axis. Khi thhin tnh th Trend chthhin
mt on gi trcddingj m ta t.
Thhin ng ca th:Thi im cui ca Trend lun tng ng vi thi gian h thng thi
im hin ti. Vic t cu hnh cho n cng trong X-Axis ca ca s hp thoi
Properties Trend Window Template.
Bng lu tr(Table Window Template)Thnh phn ny c cu trc gn ging nh Trend nhng hin thgi trhin
thi ca Tag dng bng. Vmt nguyn l m ni th chng khng c g khc nhau, m
chkhc vcch thhin. Tt cvic khi to v t cu hnh l tng tvi Trend.
Chc nng ca n cng ging vi Trend, ngoi vic hin thcn phc vcho
vic in n hthng.
2.4.4Hthng cnh bo (Alarm Logging)2.4.4.1Gii thiu chung vhthng cnh bo (Alarm Logging)
Alarm Logging l trnh son tho m nhn a tin tqu trnh chun b, hin
th, nhn, lu trnhng tin tc theo mt quy lut.
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dng c thnh nhng biu tng trn thanh bngny. Ca sdn c chia
thnh 3 ca snh: dn ng, dliu, bng.
Ta c th thay i kch thc ca nhng ca sny. Pha di ca s cha
thanh trng thi hin ththng tin vqu trnh hin thi.
2.4.4.2Mt skhi nim trong son tho Alarm Logginga. Lu tr
Phthuc vo lp thng bo, sthay i xut hin trong cc trng thi thng bo
c vit cho nhng lu trthng bo c thnh hnh.
Cho nhng lu trngn hn, kch thc lu trc nh ngha bi sthngbo sc lu tr. Mt lu trngn hn c thchc to ra nh mt slu trlin tc. Nu slu trnhng thng bo t n cc i, nhng thng
bo c nht c ghi ln, khi ln ti 10.000 thng bo tnh trng thay i
c thc ct gitrong mt lu trngn hn. Nhng thng bo m c ct
gitrong mt lu trngn hn c hin thtrong mt ca sthng bo.
Cho nhng lu trdi hn, kch thc lu trc xc nh bi khon thigian qua nhng thng bo sc lu tr. Mt lu trdi hn c th l
lin tc hoc ni tip. Trong nhng lu trlin tc, nhng thng bo c nhtc ghi ln sau, lu trkhi nhng thng bo c t n cc i. Trong lu
trni tip, lu trc tip tc tun tcho n khi ht kkhar nng ca mi
trng cha. Nhng thng bo m c ct gitrog mt lu trdi hn c
hin thtrong mt ca sthng bo.
b. Thng bo n, thng bo nhmTrong Alarm Logging, c hai mu thng bo l thng bo n v thng bo
nhm.
Vi thng bo n, mi skin c gn bng mt thng bo.Thng bo nhm c sdng tng kt nhiu thng bo n. Nhng s
kin lin kt ti nhng thng bo n chthc y vic nhm chung cc thng
bo li. Thng bo n m thc y thng bo nhm khng thc xc nh.
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Mt thng bo nhm c thc thit lp nh mi kiu lp v loi thng bo.
Hn na, nhng thng bo nhm c th cng c to ra s dng bt k
nhng thng bo n no.
c. Sghi nhn n, sghi nhn nhmMt thng bo cha quyt nh c thc tha nhn mt trong hai cch sau:
Nhng thng bo m khng c thuc tnh ghi nhn nhm phi c ghinhn ring.
Sghi nhn nhm c thsdng tp hp ghi nhn tt c cc thng boring lc thuc tnh ghi nhn nhm c hin thtrong mt ca sthng
bo.d. Skin
Vi nhng skin, mt skhc nhau gia nhng skin nhphn v nhng s
kin gim st:
Nhng skin nhphn l nhng s thay i trng thi ca Tag trong hocTag ngoi.
Alarm khng h tr vic trc tip vic gim st s kin, m ch gim stnhng skin: trn lu trv bnhchc, in thng bo, li Server, xl
ngt truyn thng.
e. Thng boMc ch ca mt thng bo hthng stheo thtthi gian bo hiu v lu tr
nhng skin ti tm im xut hin khng thng xuyn trong sut qu trnh. Mt
thng bo c thc gy ra bi mt skin hoc mt khung thng bo.
Ni chung, c 2 loi thng bo hot ng ca h thng l thng bo li vthng bo h thng. Nhng thng bo hot ng c s dng hin th
trng thi trong qu trnh. Nhng thng bo li c sdng hin th li
trong qu trnh. Nhng thng bo h thng c sdng hin thnhng
thng bo li tnhng ng dng khc.
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Trong Alarm Logging, nhng thng bo vi hnh vi tng t(mu ca nhngtrng thi thng bo) c thc nhm li vo trong nhng kiu lp v loi
thng bo.
f. Kiu thng bo, lp thng boNhng lp thng bo khc nhau ttrong ghi nhn xth. Nhng thng bo vi
cng ghi nhn xth c thtch hp trong mt lp thng bo n.
Nhng kiu thng bo l nhng nhm con ca nhng lp thng bo v c th
khc mu ca nhng trng thi thng bo. C ti 16 kiu thng bo c thc to ra
trong WinCC cho mi lp thng bo.
g.
Khi thng boSthay i trong trng thi ca mt thng bo c hin thtrong thi gian thc
hin trong mt hng thng bo. Thng tin s c trnh by trong hng thng bo
c nh ngha sdng nhng khi thng bo. C ba kiu khc nhau:
System blocks: nhng khi hthng (v dnh ngy thng, thi gian, khongthi gian,...) ddng ghi thng tin c nh ngha trc v khng c s
dng ty thch. Vi nhng khi hthng, gi trca khi thng bo (v dnh
thi gian) c hin thtrong hng thng bo.
User text blocks: nhng khi vn bn ngi dng c thcho bn gn cho mtthng bo ln trn ti mi, c skhc nhau l c thnh ngha ty thch
nhng vn bn. Vi nhng khi vn bn ngi dng, ni dung ca khi vn
bn do bn nh ngha v c hin thtrong hng thng bo.
Process value blocks: sdng nhng khi gi trqu trnh, bn c thhin thgi tr ca cc Tag trong hng thng bo. C thnh ngha c dng s
dng. Vi nhng khi gi trqu trnh, ni dung ca khi thng bo, gi tr
ca Tag do bn nh ngha v c hin thtrong hng thng bo.
h. Cch to thng bo hthngnh dng mt thng bo hthng:
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nh dng nhng thng bo v lp thng bo.Nhp v xut nhng thng bo n.Ni nhng thng bo ti qu trnh.nh dng h thng WinCC Alarm Control hin thnhng thng bo khi
chy thi gian thc.
i. Cc bc xy dng mt thng bo hthngSdng Wizard to ra cu trc c bn ca thng bo hthng.nh dng nhng khi thng bo theo nhng yu cu ca bn.nh dng hthng thng bo.
nh dng nhng lp thng bo. nh dng nhng kiu thng bo. nh dng nhng thng bo n. nh dng nhng thng bo nhm.
t slu trkiu dliu nh dng nhng lu tr. nh dng nhng bn ghi.
nh dng h thng iu khin bo ng WinCC trong trnh son thoGraphic Designer hin th nhng thng bo khi chy thi gian thc. S
dng ca sng dng (Aplication Window) to hthng Alarm.
Sdng nhng hp thoi Wizard v cu hnh sn c hon ton to ra nhng
thng bo theo cc bc nu trn.
2.4.5Hthng bo co (Report Designer)Report Designer l trnh son tho c bn m WinCC cung cp to v in ra
cc bo co. Trong WinCC cung cp sn hai dng l bo co theo trang v bo co
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theo hng. Cc bo co c thin ra dliu dng khi nh dng hthng v cho vic
chy thi gian thc theo cc ng dng sau:
Scripts trong Graphics Designer.Alarm Logging CS.Alarm Logging Runtime.WinCC Explorer.Global Scripts.Graphics Designer.Tag Logging CS.Tag Logging Runtime.Text Library.User Administrator.Trong trnh son tho ny, ta sdng cc i tng ng in cc dliu, cc
dliu ny c ni ti cc ng dng ca n. Chn dliu u ra phthuc ng
dng v thc hin khi to ra lp, khi to ra vic in n. Khi bo co, cc i tng ng
lun c cp nht cc gi trhin thi. Cc i tng hthng v i tng tnh sn
sng cho sp xp cc bo co trc quan. in bo co, ta phi chn thi gian bo co
(chu k cp nht bo co) v mi trng bo co, WinCC a ra cc khnng la
chn sau:
Vic in bo co c quyt nh bi ngi dng.Thi gian in c t trc.In theo chu k.In ra mn hnh.In ra my in c chn trc.In ra file.In ra vng no ca trang in.
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t cu hnh trang in.
Mtrnh son tho report, ta sdng cc cng chtrthit ktrang bo co
theo yu cu cng vic nhu cc i tng tnh, ng, h thng cc cng cha,
thanh menu,... Cch lm cng ging nh trong Graphics Designer. Trong trong mt
trang bo co bao gm 2 phn: phn tnh l phn m ti cc trang u a ra ging
nhau nh cc tiu , hnh nh,... v phn ng l phn hin thcc dliu m cn bo
co m ta t bng cc i tng ng. Sau khi t xong cu hnh ta t cc thuc tnh
cho trang bo co nh khgiy, cn l,...sau ghi li vi phn mrng *.rpl.
t tham sin.
in c bo co lc chy thi gian thc th ta phi t tham scho phn in
theo cc bc sau:
Trong ca s WinCC Explorer, nhp p chut vo dng report designer,chn new printfjob. Sau khi hp toi xut hin nhp tn ca bo co, chn lp
bo co nh dng trn.
Trn hp thoai nh du vo mc Start time trong hp checkbox.Chn my in tdanh sach thxung.Nhn Ok kt thc.
2.5 Hm trong WinCCTrong dn WinCC, cc thnh phn ca qu trnh lun lun c lin quan v ph
thuc ln nhau, mi thnh phn c chc nng ring m chng ta phi to ra theo yu
cu cng vic hin thcc gi trca bin qu trnh, cc nt n vi cc chc nng khc
nhau, vic in n cc bo co trng thi hthng. to ra cc chc nng ny, WinCC
h trcc hn khc nhau m ngi lp trnh c th sdng nh dng h thng.Tuy nhin ta c th vit cc hm ring to ra cho cc yu cu khc m WinCC
khng htrbng trnh son tho Global Scrip, sau c thdng cc hm m mnh
to ra c thsdng nhiu ln hoc nhiu dn phthuc cng loi.
2.5.1Nhm hm chun (Standard Function)
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a. Nhm hm cho GraphicsOpenpicture: gi trc tip cc nh c phn mrng .pdl bng tham s l tn
ca nh .
SetTagNameWithConnect: gi gin tip nh thng qua tn Tag c gntrong thuc tnh ca nh . Ba tham sca hm l tn nh, tn i tng v
tn Tag.
b. Nhm hm cho ReportReportJob: dng gi lp bo co c son tho bng Report designer,
tham sgi hm l tn lp report c phn mrng .rpl.
RPTjobPreview: dng xem trc lp bo co son tho, tham sgihm l tn lp bo co c phn mrng .rpl.
RPTjobPrint: dng in bo co, tham sgi hm l tn bo co c gnbi lp bo co cn in.
c. Nhm hm WinCCOnErrorExecute: dng c li khi chy thi gian thc.
d.
Nhm hm WindowsProgramExecute: dng gi cc trnh ng dng khc khi chy thi gian thc.
Tham s gi hm l cc chng trnh ng dng chy trn nn Windows c
phn mrng l *.exe.
e. Nhm hm cho AlarmDng qun l vic hin thcc thng bo, nh vli, nguyn nhn gy li,
f. Nhm hm cho Split Screen manegerDng qun l vic chia cc mn hnh gim st.
g. Nhm hm cho Tag LoggingDng to cc chc nng hin thcc bng lu trcc bin qu trnh, hin
thdng ha cc bin qu trnh.
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2.5.2Nhm hm trong (Internal Function)a. Nhm hm c gi trTag
GetTagBit: c ni dung ca Tag c dng dliu l Binary.GetTagByte: c ni dung ca Tag c dng dliu l 1 Byte.GetTagWord: c ni dung ca Tag c dng dliu l 1 t.GetTagChar: c ni dung ca Tag c dng dliu k t.GetTagDouble: c ni dung ca Tag c dng dliu sdouble.GetTagFloat: c ni dung ca Tag c dng dliu sthc.
b.
Nhm hm gn gi trcho TagSetTagBit: t gi tr0 hoc 1 cho Tag c dng Binary.SetTagByte: t gi trcho Tag dng Byte.SetTagWord: t gi trcho Tag c dng dliu l 1 t.SetTagChar: t gi trcho Tag c dng dliu k t.SetTagDouble: t gi trcho Tag c dng dliu sdouble.SetTagFloat: t gi trcho Tag c dng dliu sthc.
c. Nhm hm GraphicsNhm hm gn cc gi trcho cc thuc tnh ca i tng ha.Nhm hm c gi trcc thuc tnh ca cc i tng ha.
d. Nhm hm cho Alarm2.5.3Dynamic Wizard
Ngoi cc hm m WinCC h tr, th trong trnh son tho Graphics Designer
cn c mt ca sDynamic Wizard htrcc chc nng c bit khi t cu hnh cho
mt dn nh thot khi WinCC, thot khi h thng runtime, in mn hnh runtime
(hard copy), gi cc trnh ng dng khc... Cc hm chc nng trong ca sc gn
cho cc i tng ha bng cch nh du i tng sau nhy p chu t vo
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hm c kit k trong ca s. Sau xut hin hp thoi cho ta chn cc tham sv
n nt finish kt thc lc ny i tng c gn hm m ta khng cn phi gi
hm v bin dch khi gn hm cho i tng.
2.6 Truyn thng trong WinCCTruyn thng l thut ngdng m tstruyn dliu gia hai i tc truyn
thng. D liu c truyn c thphc vnhiu mc ch khc nhau. Trong trng
hp gia PC v PLC dliu c sdng :
iu khin i tc truyn thng.Hin thtrng thi ca i tc truyn thng.Bo co cc trng thi bt thng ca i tc truyn thng.Lu tr.Trong cng nghip, ty theo yu cu cc mng khc nhau c sn cho vic phc
vtruyn thng cng nghip, cc loi mng sau c lit k theo th t tng dn v
quy m v phm vi sdng ty thuc bi ton truyn thng:
MPI.
Profibus.Industrial Ethernet.
Mng MPI
MPI (giao din a im) thch hp cho nhng mng kch thc nh. N c th
chc sdng phi hp vi Simatic S7. Mng MPI sdng giao din MPI ca card
xl trung tm PLCs cho truyn thng. Giao din ny c thit knh mt giao
din lp trnh v nhanh chng t n nhng gii hn thc hin ca n vi yu cu
truyn thng ngy cng tng. Mt PC c thtruy nhp mng MPI bng mt card MPI
c ci. Nhng bxl truyn thng cung cp struy nhp ti Profibus c thcng
c sdng.
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Trnh iu khin truyn thng SIMATIC S7 PROTOCOL SUITE cung cp vic
truyn thng ti cc PLC SIMATIC S7-300 v S7-400 xdng cc knh truyn thng
khc nhau. Trong s c sn mt knh MPI truyn thng qua n.
2.6.1.2i tc truyn thngTrnh iu khin truyn thng SIMATIC S7 PROTOCOL SUITE cho php
truyn thng ti PLC SIMATIC S7-300 v S7-400. Theo hnh minh ha di y cho
bit cc i tc truyn thng c thca knh MPI.
Hnh 2.1 M hnh truyn thng qua mng MPI
2.6.1.3Dliu truyn thngKnh MPI htrvic truyn thng thng qua modul Hardnet v Softnet. Mi PC
chc thc sdng mt module truyn thng MPI. Theo bng di dy cho bit
s lng PLC c th c a ch bi b x l truyn thng x dng trong trm
WinCC. Gi trong hoc biu din slng khuyn co ln nht.
Bng 2.3 Slng PLC c a chbi bxl trong trm WinCC
Bxl truyn thng Slng im kt ni truyn thng(Communication Connections)
(Communication Processor) 29 (6)
Hardnet Modul 29 4)
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2.6.2.2Trnh iu khin truyn thng (Communication Driver)Trong WinCC, c nhiu trnh iu khin truyn thng c sn cho php truyn
thng thng qua mng PROFIBUS.
Giao thc truyn thng
Cc trnh iu khin truyn thng c sn cho PROFIBUS thc hin truyn
thng thng qua mt giao thc truyn thng no . Theo bng chra di y cho
bit giao thc truyn thng cho cc trnh iu khin truyn thng ca n.
Bng 2.5 Giao thc truyn thng cho cc trnh iu khin
Trnh iu khin truyn thng
(Communication Driver)
Protocol
SIMATIC S7 PROTOCOL SUITE
(PROFIBUS)
S7-Functions
SIMATIC S5 PMC PROFIBUS S5-PMC
SIMATIC S5 PMC PROFIBUS FDL FDL
PROFIBUS FMS FMS
PROFIBUS DP DP
Kt ni truyn thng
Theo bng di y s lng cc kt ni truyn thng c thc lin kt bi
mt trnh iu khin no .
Bng 2.6 Slng cc kt ni truyn thng
Trnh iu khin truyn thng
(Communication driver)
S cc kt ni cho mt knh
(Connections per channel unit)
S lng knh
(Channel units)
S7 PROFIBUS 59 2S5 PMC PROFIBUS 24 1
S5 PROFIBUS FDL 24 1
PROFIBUS FMS 32 1
PROFIBUS DP 62 4
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2.6.2.3PROFIBUS DPThng qua trnh iu khin truyn thng PROFIBUS DP, mt trm WinCC c
thtruyn thng vi tt ccc PLC v cc thit btrng, cc thit bny c thc
hot ng nh cc DP slave. ng dng trnh iu khin truyn thng PROFIBUS DP
trong WinCC scho khnng lm vic tt, nu c mt lng nhdliu truyn thng
ti mt slng ln cc thit bcp di. C thcp nht Tag rt nhanh ngay ckhi
dliu bphn tn.
i tc truyn thng
Thng qua cc trnh iu khin truyn thng PROFIBUS DP, c th lin kt
truyn thng vi tt c cc PLC v cc thit b trng, cc thit bny c thc
hot ng nh cc DP slave. Theo s m t ca hnh di cho bit nhng i tc
truyn thng c th.
Hnh 2.2 M hnh truyn thng qua mng Profibuss DP
Truyn thng dliu
Trnh iu khin truyn PROFIBUS DP cung cp ring cho truyn thng thng
qua bxl truyn thng CP 5412 A2. Trong mt trm WinCC c thxdng t1
n 4 module truyn thng. Mi b x l truyn thng CP 5412 A2 c th truyn
thng vi 62 DP slave nu c Repeater, nu khng c Repeater th chkt ni ti a
c 32 trm.
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Yu cu phn mm
Bng sau s cho ta bit danh sch cc phn mm thc hin lin kt truyn
thng ca trm WinCC thng qua PRIFIBUS DP.
Bng 2.7 Danh sch phn mm lin kt truyn thng trm WinCC thng qua
PRIFIBUS DP
Tn M t
WinCC Trnh iu khin truyn thng (Communication Drive)
PROFIBUS DP
SIMATIC NET Driver Software PB DP-5412
Configuration Software COM PROFIBUS
2.6.2.4PROFIBUS FMSThng qua trnh iu khin truyn thng PROFIBUS FMS, mt trm WinCC c
thtruyn thng vi cc PLC c htrgiao thc FMS.
Trnh iu khin truyn thng PROFIBUS FMS c thc xdng truyn
thng vi cc thit bc cung cp bi cc nh sn xut khc nhau. Truyn thng
loi ny c thqun l mt slng ln dliu.i tc truyn thng
Thng qua trnh iu khin truyn thng PROFIBUS FMS, WinCC c thtruyn
thng vi cc PLC c htrgiao thc FMS. Theo hnh vm tdi y cho bit
cc i tc truyn thng c th.
Hnh 2.3 M hnh truyn thng qua Profibus FMS
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Phn mm truyn thng
Nhng phn mm i hi cho vic thc hin kt ni truyn thng ca mt trm
WinCC thng qua PROFIBUS FMS.
Bng 2.8 Danh sch phn mm lin kt truyn thng trm WinCC thng qua
PROFIBUS FMS
Name Description
WinCC Communication Driver PROFIBUS FMS
SIMATIC
NET
Driver Software PB FMS-5412
Configuration Software COM PROFIBUS
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CHNG3: THIT B LP TRNH PLC S7-200 CPU22X (SIEMENS)
3.1 Gii thiu tng qut v h PLC S7Thit biu khin logic khtrnh PLC (Programable Logic Controler) l thit b
iu khin c bit dtrn bvi xl, sdng bnhlp trnh c lu trcc
lnh, thc hin cc chc nng v thut ton iu khin my v cc qu trnh.
HPLC S7 l l mt hc PLC mnh, tc xl cao, khnng qun l bnhtt, kt ni mng cng nghip.
Hin nay hPLC S7 gm c S7-200, S7-300, S7-400.Mi mt thhPLC li c nhiu chng loi CPU khc nhau.i vi PLC S7, c th thc hin cc php ton Logic, m, nh thi, cc
thc ton phc tp v thc hin truyn thng vi cc thit bkhc.
Hnh 3.1 CPU 224 AC/DC/RLY
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Bng 3.1 Mt sthng skthut ca S7-200 CPU22X
CPU221 CPU222 CPU224 CPU226 CPU226XM
Bnhchng
trnh 2048W 2048W 4096W 4096W 8192W
Bnhdliu 1024W 1024W 2560W 2560W 5120W
Khnng d
phng bnhkhi
mt ngun
50 gi 50 gi 190 gi 190 gi 190 gi
I/O a ch 6In/4Out 8In/6Out 14In/Out 24In/16Out 24In/16Out
ng hthi gian
thcCartrige Cartrige Tch hp Tch hp Tch hp
Kch thc bm 256 (128In, 128 Out)
Tc thc hin
lnh logic0.37us/lnh
3.2 c trng k thut ca PLC S7-200 CPU 22X3.2.1 a chcc vng nhca S7-200 CPU 22X
u vo (Input): I0.0 I0.7; I1.1 I1.5.u ra (Output): Q0.0 Q0.7; Q1.0 Q1.1.Bm o u vo: I0.0 I15.7 (128 u vo).Bm o u ra: Q0.0 Q15.7 (128 u ra).u vo tng t: AIW0 AIW62.u ra tng t: AQW0 AQW62.
Vng nhV: VB0 VB5119.Vng nhL(a phng): LB0 LB63.Vng nhM: M0.0 M31.7.Vng nhSM: SM0.0 SM549.7.
SM0.0 SM29.7 (read-only).
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Vng nhTimer: T0 T225.Vng nhCounter: C0 C225.Vng nhbm tc cao: HC0 HC5.Vng nhtrng thi (logic tun t): S0.0 S31.7.Vng nhthanh ghi tng: AC0 AC3.Khnng qun l Label: 0 255.Khnng qun l chng trnh con: 0 63.Khnng mrng chng trnh ngt: 0 127.
3.2.2Cu hnh vo ra ca S7-200 CPU22X AC/DC/RELAY
Hnh 3.2 S u ni dy vo ra ca PLC S7-200 CPU224
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Bng 3.2 Cc module mrng ca S7-200 CPU224
Tn module mrng Kiu
Module s
u vo 8DI (VDC) 8DI (VAC)
u ra 8DO (VDC) 8DO (VAC) 8DO (Relay)
Kt hp 4DI/4DO 8DI/8DO 16DI/16DO
4DI/4DO(Relay) 8DI/8DO(Relay) 16DI/16DO(Relay)
Module tng t
u vo 4AI 4AI(Thermocoupler) 2AI(RTD)
u ra 2AO
Kt hp 4AI/1AO
Module thng minh Vtr Modem PROFIBUS-DP
Module thu thp d
liu hin trngAS-Interface
3.2.3Cu hnh phn cng
Hnh 3.3 Cu hnh phn cng PLC S7-200 CPU 224
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M tcc n bo trn CPU 224. SF (n ): n SF bo hiu hthng bli. n SF sng ln khi PLC
c li.
RUN (n xanh): PLC ang lm vic v thc hin chng trnh c npvo trong bnhchng trnh.
STOP (n vng): PLC ang chdng. I.x.x (n xanh): Chnh trng thi mc logic tc thi ca cng vo. Q.x.x (n xanh): Chnh trng thi mc logic tc thi ca cng ra.
Chn chlm vic trn CPU 224. RUN: Cho php PLC thc hin chng trnh trong bnh. PLC S7 200
chuyn sang chSTOP khi CPU c schoc gp lnh STOP.
STOP: Cng bc PLC dng chng trnh ang chy v chuyn sang ch STOP. V ch STOP cho php PLC hiu chnh, np, xa mt
chng trnh.
TERM: Cho php ngi dng tmy tnh quyt nh chn mt trong haichlm vic cho PLC.
3.2.4 Khi truyn thngS7-200 sdng cng truyn thng ni tip RS 485 phc vvic ghp ni vi
thit blp trnh hoc cc trm PLC khc. Tc truyn cho my lp trnh kiu PPI l
9.6 kbps, tc truyn cung cp ca PLC theo kiu tdo l 300 baud n 38400 baud.
Giao tip PLC 200 vi PC thng qua cng RS 232 cn c cp ni PC/PPI vi
bchuyn i RS232/RS485 v qua cng USB dng cp USB/PPI.
3.2.5Card nh, pin, clockS7 200 cung cp nhiu bin php m bo cho chng trnh ngi dng, d
liu khng bmt i khi mt ngun in. V dCPU 224 khong 100 gi. Vng nh
EEPROM cho php lu chng trnh, cc vng nhc ngi dng chn cha vo
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b. Cp USB/ PPI Multi Master
Hnh 3.6 Hnh dng cp USB/PPI
Cch thc kt ni ca cp USB/PPI Multi-Master cng tng t nh cp
RS232/PPI Multi-Master. s dng cp ny, phn mm cn phi l Step 7
Micro/Win V3.2 SP4( hoc cao hn). Cp ny chc thc sdng vi loi CPU
22x hoc sau ny. Cp USB khng htrtruyn thng Freeport v Dowload cu hnh
mn hnh TP070 tphn mm TP Designer.
3.3 Nhng khi nim c sca PLC S7-2003.3.1 Khi nim vng qut ca PLC
Hnh 3.7 Vng qut ca PLC
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a) c dliu u vo:c cc trng thi vt l (Input) vo bm o (IR Input Register).
b) Thc thi chng trnh:CPU c dliu tIR, thc hin chng trnh phn mm, kt quc lu li
cc vng nhthch hp v bm o u ra (OR Output Register).
c) Xl cc yu cu truyn thng (option):Nu c yu cu truyn thng v xl ngt.
d) Tchun on li:CPU kim tra li ca hiu hnh trong ROM, cc vng nhv cc trng thi
lm vic ca cc module mrng.
e) Xut kt quu ra:CPU c kt qutOR, v xut kt qura cc cng vt l.
Mt slu :
u vo s Nu khng dng tnh nng I (Immediately) th d liu u vo c cp
nht ti bm o.
Nu dng tnh nng ny, chng trnh bqua bm o.u vo tng t
Nu bqua tnh nng lc tng t, th chng trnh sly trc tip dliuti cng vt l.
Nu dng tnh nng ny, th chng trnh sc cc gi trc lu li.
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3.3.2 Truy cp dliu ti cc vng nhca S7-2003.3.2.1Truy cp dliu trc tipa. Truy cp theo bt
b. Truy cp theo byte
MSB LSB
VB100
c. Truy cp theo Word (t)
MSB LSB
VW100
7 VB100 0
15 VB100 8 7 VB101 0
a chtheo bit
Du phn cch (bt buc)
a chbyte nh
Tn vng nh
1 2 . 4
1 2 3 4 5 6 7 8
Byte 0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
a chbyte caoKiu truy cp
Tn vng nh
V W 100
V B 100
a chbyte
Kiu truy cp
Tn vng nh
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d. Truy cp theo Double Word (tkp)
MSB LSB
31 VB100 23 VB101 16 15 VB102 8 7 VB103 03.3.2.2Phn chia vng nhtrong S7-200a. Vng m o u vo (I;I0.0-I15.7)
CPU struy cp cc u vo vt l ti u mi chu kqut v ghi dliu vobm o.
nh dng truy cp:Bit: I[byte address].[bit address] I0.1
Byte, Word, or Double Word I[size][starting byte address] IB4
b. Vng m u o ra (Q;Q0.0-Q15.7) Cui mi chu kqut, CPU S7-200 struy cp dliu tbm o xut ra
cc u ra vt l.
nh dng truy cp:Bit: Q[byte address].[bit address] Q1.1
Byte, Word, or Double Word Q[size][starting byte address] QB5
c.
Vng nhbin (V;VB0-VB5119) Vng nhny thng lu cc kt qutrung gian ca chng trnh. nh dng truy cp:
Bit: V[byte address].[bit address] V10.2
Byte, Word, or Double Word V[size][starting byte address] VW100
a chbyte cao
Kiu truy cp
Tn vng nh
V D 100
VD100
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d. Vng nhbt (M;M0.0-M31.7) Vng nhny thng lu cc kt qutrung gian ca mt thao tc hoc cc
thng tin iu khin khc.
nh dng truy cp:Bit: M[byte address].[bit address] M26.7
Byte, Word, or Double Word M[size][starting byte address] MD20
e. Vng m bnhtc cao (HC;HC0-HC5) Bm tc cao hot ng c lp vi chu kqut ca PLC. Current value
l mt gi trm 32bit c du, l gi tr ch c v c gn a chdi
dng double word.
nh dng truy cp:Format: HC[high-speed counter number] HC1
f. Vng nhthi gian (T;T0-T225) Vng nhny dnh cho cc bthi gian ca S7-200. i vi mt bTimer
c hai hnh thc truy cp vng nh, truy cp theo Timer bit hoc Current
Value.
nh dng truy cp:Format: T[timer number] T24
Ty theo lnh sdng trong chng trnh m cho php ta truy cp theo Timerbit hay Current value.
g. Vng nhbm (C;C0-C225)Vng nhny dng cho cc bm ca S7-200. i vi mt bCounter c
hai hnh thc truy cp vng nh, truy cp theo Counter bit hoc Current value.
nh dng truy cp:Format: C[counter number] C24
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Ty theo lnh s dng trong chng trnh m cho php ta truy cp theoCounter bit hay Current value.
h. Vng nhthanh ghi tng (AC;AC0-AC3)Thanh ghi tng thng c dng truyn tham svo v ra cho cc thtc,
lu trcc kt qutrung gian ca mt php tnh.
nh dng truy cp:Format: AC[accumulator numbet] AC0
i. Vng nhc bit (SM)Vng nhny cung cp cc bit truyn thng gia CPU v chng trnh. Cc
bit ny c dng la chn v iu khin mt s chc nng c bit ca
CPU S7-200.
nh dng truy cp:Bit: S[byte address].[bit address] S3.1
Byte, Word, or Double Word S[size][starting byte address] SB4
j. Vng nhu vo tng t(AL)S7-200 chuyn mt gi trtng tthnh mt gi trsc ln 16bit. Do
ln dliu truy cp l mt t, mc khc khi truy cp u vo tng tlun s
dng nh dng theo t, do vy a chbyte cao lun l schn. V dALW0,
ALW2, ALW4. Gi tru vo analog di dng chc.
nh dng truy nhp:Format: AIW[starting byte address] AIW4
k. Vng nhu ra tng t(AQ)S7-200 chuyn mt gi trsc ln 16 bit thnh mt gi trtng tdi
dng dng in hoc in p tlvi gi tr. Do ln gi trchuyn i
l mt t, nn a chbyte cao lun l schn. V d: AQW0, AQW2, AQW4.
Gi tru ra analog di dng chghi.
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nh dng truy cp:Format: AQW[starting byte address] AQW4
3.3.2.3Truy cp dliu gin tip thng qua con tra. Con tr(Pointer)
L mt nhc kch thc mt tkp (double word) cha a chca mt nh
khc. Khi ta truy cp vo nhca con trc ngha ta ang c a ch ca nh
mong mun.
C 3 vng nh trong S7-200 cho php dng lm con tr: V, L, AC1, AC2,AC3.
S7-200 cho php dng con trtruy cp cc a chnhAL, AQ, HC, SM, Lv a chdi dng bit.
S7-200 cho php dng con trtruy cp cc a chnhsau: I, Q, V, M, S, T(timer value), C (current value).
Khi sdng cch truy cp thng qua con tr, trong S7-200 sdng 2 k t&v *.
K t&: dng khi to con tr. V d: MOVD & VB200, AC1. Chuyn a ch VB200 (khng chuyn ni dung) vo thanh ghi AC1.
Thanh ghi AC1 trthnh con tr.
K t*: dng truy cp ni dung nhc a chcha trong con tr. V d: MOVB *AC1, VB200. Chuyn ni dung nhc a ch lu trong con trAC1 vo nhc
a chVB200.
b. Lu : thay i ni dung con trSdng lnh tng +D (Tng tkp, do con trl mt thanh ghi 32 bit).
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Nu truy cp theo byte: Tng ni dung con trln 1.Nu truy cp theo word: Tng ni dung con trln 2.Nu truy cp theo double word: Tng ni dung con trln 4.
3.3.2.4La chn ngn nglp trnhTrong S7-200 cho php la chn 3 ngn nglp trnh:
Ngn ngLADDER (LAD).Ngn ngSTL.Ngn ngFBD.Ba ngn ngny vmt hnh thc c thchuyn i ln cho nhau. Vic la chn
ngn nglp trnh l ty theo thi quen, sthch cng nh kinh nghim ca ngi s
dng.
a. Ngn ngLADDERL ngn nglp trnh ha da trn c ss trang bin, vic kt ni
lp trnh ha ging vi vic thit lp cc s relay-contactor. Mt chng
trnh ngun vit bng LAD c tchc thnh cc network, mi network thc
hin mt cng vic nh.
S7-200 c chng trnh ttrn xung di, ttri qua phi, sau lp li vng qut tip theo.
Hnh 3.9 Lp trnh bng ngn ngLADDER
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CHNG4: KT NI V IU KHIN GIA WINCC V PLC
S7-200 PC ACCESS c dng trong lun vn ny vi mc ch kt ni gia
S7-200 v WinCC, lm c iu ny ta tm hiu cch ci t v sdng ca n
di y.
4.1 Ci t S7-200 PC AccessCc bc thc hin:
Ti th mc cha chng trnh ci t. Chn file Setup, ri nhp i chy
chng trnh.
Hnh 4.1 Mfile ci t
Hp thoi Choose Setup Language xut hin, chn ngn ngEnglish, nhp OK.
Hnh 4.2 La chn ngn ng
Vt sng xut hin lan dn qua phi trn hp thoi cho bit chng trnh ang ci
t.
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Hnh 4.3 Qu trnh ci t
Hp thoi InstallShield Wizard xut hin, nhp Next tip tc ci t.
Hnh 4.4 Gii nn ci t
Hp thoi ktip xut hin, chn Yes.
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Hnh 4.5 Ci t chng trnh
Hp thoi hin thng dn ci t chng trnh. Nu mun thay i ng
dn chn nt Browse. y ta ginguyn ng dn mc nh, nhp Next.
Hnh 4.6 La chn a ci t
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Vt sng xut hin lan dn ttri sang phi cho bit qu trnh ci t ang tin
hnh.
Hnh 4.7 Qu trnh ci t ci t
Bng SIMATIC Device Drivers Setup xut hin.
Hnh 4.8 Ci t Driver
Sau khi cc vt sng chy xong, hp thoi Set PG/PC Interface xut hin, nhp
OK.
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4.2 Cch sdng S7-200 PC Access4.2.1To skt ni cho mt PLC
Trong S7-200 PC Access vi trgip OPC bao gm 3 bin i tng:
PLC.Folder (khng cn thit).Item.Khi to mt dn mi, vic kt ni PLC phi c lm trc vi hai bc sau:
4.2.1.1Thit lp cu hnh giao tipKhi ng S7-200 PC Access, tthanh Taskbar chn Start > Simatic > S7-200
PC Access.
Mmt d n mi, chn File > New, ca sUnititled-S7-200 PC Access xut
hin.
Hnh 4.11 Giao din chng trnh PC Access
Nhp phi vo Microwin chn PG/PC Interface...
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Hnh 4.14 Thit t cho kt ni
Chn a chv tc truyn cho S7-200 PC Access, thng thng mc nh
nh trn. mc Local connection chn cng COM cn kt ni vi PLC.
Sau nhn OK chp nhn.
Hnh 4.15 Chn cng USB cho kt ni
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4.2.2 To mc ItemNhp phi vo mc PLC chn New, ri chn item.
Hnh 4.18 To Item
Hp thoi Item properties xut hin, mc Name nhp tn theo dn to
S7-200, mc Address nhp a chvng nh, ng vo ng ra ph hp vi dn m
ta thit lp trn S7-200, sau nhp OK chp nhn. Cthsc trnh by
chng sau.
Hnh 4.19 t tn cho Item
Sau khi nhn OK ta c kt qusau, tng tto thm nhiu Item khc.
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Hnh 4.20 Hon tt qu trnh t tn
Sau nhp chut chn cc item va to ri ko r thvo vng Test Client.
Hnh 4.21 a Item to vo test
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4.2.3 Chy th, kim traNhp chn Status > Start test Client.
Hnh 4.22 Kim tra qu trnh test
Nu thy ct Qualty chuyn tBad sang Good l vic kt ni thnh cng.
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CHNG5: NG DNG IU KHIN V GIM ST H THNG
5.1 Yu cu cng nghQui trnh hot ng
Nhn nt START, khi ng hthng.
Khi c ngi hay xe vo/ra th CB1 pht hin tc ng khi ng ng c ko
ca ln, n khi ht gp cm bin bo ca mht CB2 th dng ng c sau 10s th
ng ca li, n khi ca ng ht cm bin CB3 bo th ngng ng c.
Mun dng hthng th nhn nt STOP.
5.2 Thit k- lp trnh trn S7-2005.2.1 S kt ni mch iu khin
Hnh 5.1 S kt ni PLC
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5.2.2Khai bo thit bng vo raBng 5.1 Khai bo bin vo ra
K hiu
a ch
Tn hiu
Ch thch
1 Start I0.0 u vo Khi ng hthng
2 Stop I0.1 u vo Nt dng hthng
3 S1 I0.2 u vo Cm bin bo mht ca
4 S2 I0.3 u vo Cm bin bo ca ng
5 S3 I0.4 u vo Cm bin bo c ngi hoc vt vo/ra
6 Open Q0.1 u ra Mca
7 Close Q0.2 u ra ng ca
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5.2.3S thut tonBegin
Kim traI0.0=1
Kim traI0.4=1
CTHT 1
I0.2=1
T37=10s
CTHT 2
I0.3=1
Kim traI0.1=1
End.
ng caQ0.2=1
M caQ0.0=1
M caQ0.1=0
ng caQ0.2=0
Hnh 5.2 S gii thut
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5.2.4Mch lp trnh LAD vi S7-200Khi ng STEP S7-200: trn thanh Taskbar chn Start > MIMATIC > Step 7-
Microwin 32, tin hnh thit k.
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Hnh 5.3 Chng trnh cho hthng
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Sau khi thit kmch iu khin xong, ta kim tra li (plc > compile khi gc
tri pha di mn hnh c ch 0 errors l c), ri lu li vi tn
DONGCUAKEOTUDONG, tip theo tin hnh m phng kim tra hot ng ca
mch.
Trc tin ta cn chn loi CPU m ta cn kt ni m phng: tbn tri ca
ca sthit knhp phi vo tn m ta va lu chn Type > PLC Type > CPU ??? >
OK.
Hnh 5.4 Chn loi CPU ca PLC
Sau nhp vo biu tng Dowload np chng trnh cho plc.
Hnh 5.5 Chn nt dowload np chng trnh cho PLC
Kim tra hot ng trn plc nu tha yu cu l t, n y hon thnh cng
vic vi STEP 7-Micro/Win 32.
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5.3 Thit kto kt ni trn S7-200 PC AccessKhi ng S7-200 PC Access, trn thanh Taskbar chn Star > Simatic > S7-200
PC Access > S7-200, ca smi xut hin nhp chut phi vo MicroWin chn New
PLC.
Hnh 5.6 La chn PLC
Xut hin hp thoi, mc Name nhp S7-200 ri chn OK.
Hnh 5.7 t tn cho PLC
Sau nhp phi vo S7-200 ri chn New > Item
Hnh 5.8 Chn Item
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Hp thoi Item xut hin, mc Name nhp vo Start, mc Address nhp vo
gi trM0.0 ri chn OK.
Hnh 5.9 t tn cc bin
Tng t to cc Item khc da vo mch LAD m ta thit k STEP 7
MicroWIN SP5 ta c kt qunh sau:
Hnh 5.10 Kt qucc bin to
Sau lu li vi tn DONGCUAKEOTUDONG (nhlu trng tn lu trn
STEP 7 MicroWIN SP5), tip theo chn cc Item to ko b xung vng Test
Client nh hnh bn di:
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Mn hnh OPC Item manager xut hin.
Hnh 5.17 Chn mng kt ni vi PC Access
Click chut vo local, nu hthng ci t thnh cng PC Access th chng
trnh stng tm kim OPC Driver.
Chn S7-200.OPC Sever ri chn Browse sever. Ri chn Next trong mn hnh
Filter Criteria.
Hnh 5.18 Chn kt ni S7200.OPCServer
Click vo ti S7-