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TRNG I HC CNG NGHIP TP.HCM

KHOA CNG NGHIN

_________&_________

MN: PLC

++ Nhm 2:

--------------------------( )--------------------------

Bi 1: Thit kchng trnh iu khin 3 ng c. Hin thqua n.Nhn Startth DC1 hot ng. 5 giy sau th DC3 hot ng. Sau khi DC3 hot ng c 5s,th DC2 bt u hot ng v DC1 tt. Nhn Stop th 3s sau tt cng c u tt.

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Bi 2: Thit kchng trnh iu khin 3bng ti. Hin thqua n.Nhn Startth BT3 hot ng. 5 giy sau th BT2 hot ng. Sau khi BT2 hot ng c 5s,th BT1 bt u hot ng. Nhn Stop th BT1 ngng hot ng, 4s sau th BT2 vBT3 ngng hot ng.

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Bi 3: Thit kchng trnh iu khin n giao thng vi cc yu cu sau:+ n xanh 1 sng 5s, n vng 1 sng 2s v n 1 sng 7 giy.+ n xanh 2 sng 5s, n vng 2 sng 2s v n 2 sng 7 giy.

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Bi 4: Vit chng trnh iu khin bi gia xe vi yu cu nh sau:

Nt Start v Stop cho php v khng cho php hthng hot ng. Cha ti a 10 xe. Cm bin CB1 pht hin xe vo, cm bin CB2 pht hin xe ra. Khi CB1 pht hin xe vo th cng vo mv sxe tng ln 1. Khi CB2 pht hin c xe ra th cng ra mv sxe gim i 1. Khi sxe trong bi = 10 xe th n ca vo sng. Ca cng vo ng d

CB1 c pht hin xe chun bvo.

Mt nt nhn khn cp. khi nhn th ca vo sm, ng thi n bo ngsng.

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Bi 5: Thit kchng trnh iu khin 2 bng ti. Hin thqua n.Nhn Startth BT1 hot ng 5s li tt 5s. Khi BT1 chy c 3 ln th BT2 bt u hotng. BT2 hot ng lin tc. Nhn nt STOP th BT2 ngng hot ng, 4s sau thBT1 ngng hot ng.

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Bi 6: Vit chng trnh pht hin vt ngn, di, trung bnh theo yu cu sau:

Nt Start, stop cho php v khng cho php hthng hot ng, nhn Startbng ti schy.

CB1, CB2, CB3 t thng hng nm ngang cch nhau 2cm. Nu pht hin vt ngn schy thng Nu pht hin vt trung bnh th sau 5s. hthng gt 1 sgt sn phm Nu pht hin vt di sau 10 s. Hthng gt 2 sgt sn phm Hthng chy c 5 chu trnh th dng li 10s Sau hot ng li bnh

thng.

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Bi 7: Vit chng trnh m slng sn phm theo yu cu.

Khng c sn phm th n A sng.T110 sn phm th n B sng.T11 - 20 sn phm th n C sng.T21 sn phm trln th n D sng.

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Bi 8: Vit chng trnh iu khin dy nhot ng nh sau:- Hthng gm 1 nt ON, 1 nt OFF, 1 cng tt chuyn chtng hoc

iu khin bng tay.- chtng khi n nt ln, cc n sng tng ln lt tn hin ti

ti n s5 ri lp li. Khi nhn nt xung, th n sng li ti n s1. Thi giansng cch nhau tng l 2s.

- chbng tay, khi n nt ln th n ktip c thtcao hn ssng.Cn khi bm nt xung, n theo thtxung ssng. Thi gian sng cch nhautng l 2s.

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Bi 9: Vit chng trnh m v phn loi sn phm theo hp thp v cao.- Khi nhn ON ng c DC1 hot ng v ko bng ti cha thng thp v

cao iqua.- Khi 1 trong 2 cm bin trn bng ti cha thng btc ng, ng c DC1 s

dng li v ng thi lc ng c DC2 shot ng v ko bng ti cha hng.- Cc mt hng s tc ng cm bin 3, nu l thng cao th cm bin 3 s

chu tc ng ca 10 mt hng v dng bng ti cha hng li, nu l thng thpcm bin schu tc ng ca 5 mt hng v dng li. Lc ny DC1 shot ngtrli v tip tc chu trnh.

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