st-7pro1ftp.ruigongye.com/200803/20081015215316… · ppt file · web view · 2010-05-20高液位...
TRANSCRIPT
Date: 23/5/6File: SSP2_03C.1
SIMATIC S7Siemens AG 2000. All rights reserved.
Information and Training CenterKnowledge for Automation
模拟量处理
液位变送器
高液位
低液位
Date: 23/5/6File: SSP2_03C.2
SIMATIC S7Siemens AG 2000. All rights reserved.
Information and Training CenterKnowledge for Automation
模拟量模块的用途生产过程
物理量 标准的模拟信号
传感器 变送器• 压力• 温度• 流量• 速度• pH 值• 粘性• 等
± 500mV± 1V± 5V± 10V± 20mA4...20mA等
DAC
PQW ...PQW ...:::PQW ...
模拟量输出模块
MR模块 ADC
结果存储器PIW ...PIW ...:::PIW ...
模拟量输入模块 CPU
::::::L PIW 304
T PQW 320:
模拟执行器 物理量
......................................
Date: 23/5/6File: SSP2_03C.3
SIMATIC S7Siemens AG 2000. All rights reserved.
Information and Training CenterKnowledge for Automation
量程卡
Date: 23/5/6File: SSP2_03C.4
SIMATIC S7Siemens AG 2000. All rights reserved.
Information and Training CenterKnowledge for Automation
S7-300 模拟量模块的寻址
IM 256 to270
336 to350
352 to366
368 to382
304 to318
320 to334
272 to286
288 to302
( 发送 )
槽口号 2 3 4 5 6 7 8 9 10 11
384 to398
400 to414
432 to446
448 to462
464 to478
480 to494
496 to510
416 to430
机架 1
R0
电源模块IM
( 接收 )
电源模块 CPU
512 to526
528 to542
544 to558
560 to574
576 to590
592 to606
608 to622
624 to638
机架 2 IM( 接收 ) 电源模块
机架 3 640to654
656to670
672to686
688 to702
704 to718
720 to734
736 to750
752 to766
IM( 接收 )
电源模块
Date: 23/5/6File: SSP2_03C.5
SIMATIC S7Siemens AG 2000. All rights reserved.
Information and Training CenterKnowledge for Automation
模拟量模块 SM335 ( 输入 )
Date: 23/5/6File: SSP2_03C.6
SIMATIC S7Siemens AG 2000. All rights reserved.
Information and Training CenterKnowledge for Automation
模拟模块 SM335 ( 输出 )
Date: 23/5/6File: SSP2_03C.7
SIMATIC S7Siemens AG 2000. All rights reserved.
Information and Training CenterKnowledge for Automation
模拟输入模块 SM331
Date: 23/5/6File: SSP2_03C.8
SIMATIC S7Siemens AG 2000. All rights reserved.
Information and Training CenterKnowledge for Automation
模拟量的表达方式和测量值的分辨率
20212223242526272829210211212213214VZ16 进制 .位值 十进制0123456789101112131415位的序号 单位
位的分辨率+ 符号
1 11 ******** * * * * * * *15
* = 0 或 1
80 00000001128 ********8
40
20
10
8
4
000000
00000
0000
000
00
02
164
132
116
18
14
12
******** *
******** * *
******** * * *
******** * * * *
******** * * * * *
******** * * * * * *
9
10
11
12
13
14
Date: 23/5/6File: SSP2_03C.9
SIMATIC S7Siemens AG 2000. All rights reserved.
Information and Training CenterKnowledge for Automation
在不同测量范围下模拟量的表达方式
范围
超上限超上界
额定范围
超下界
超下限
测量范围± 10V
电压例如:
>= 11.759
11.7589 :10.0004
10.00 7.50 :-7.5-10.00
- 10.0004 :- 11.759
<= - 11.76
单位
32767
32511 :27649
2764820736 :-20736-27648
- 27649 :- 32512
- 32768
测量范围4 .. 20mA
电流例如:
>= 22.815
22.810 :20.0005
20.00016.000 : :4.000
3.9995 :1.1852
<= 1.1845
单位
32767
32511 :27649
2764820736 : :0
- 1 :- 4864
- 32768
测量范围-200...+850ºC
温度例如 Pt100
单位
32767
10000 :8501
8500 : : :-2000
- 2001 :- 2430
- 32768
>= 1000.1
1000.0 :850.1
850.0 : : :-200.0
- 200.1 :- 243.0
<= - 243.1
测量范围0...300Ohm
电阻例如:
>=352.778
352.767 :300.011
300.000225.000 : :0.000
不允许负值
单位
32767
32511 :27649
2764820736 : :0
- 32768
- 1 :- 4864
Date: 23/5/6File: SSP2_03C.10
SIMATIC S7Siemens AG 2000. All rights reserved.
Information and Training CenterKnowledge for Automation
模拟输入量的规范化
500,0
0,00 27648
Date: 23/5/6File: SSP2_03C.11
SIMATIC S7Siemens AG 2000. All rights reserved.
Information and Training CenterKnowledge for Automation
模拟量输出的规范化
27648
0 0,0 100,0
Date: 23/5/6File: SSP2_03C.12
SIMATIC S7Siemens AG 2000. All rights reserved.
Information and Training CenterKnowledge for Automation
模拟输出量的表达形式范围
超上限超上界
额定范围
超下界
超下限
单位
>=32767
32511 :27649
27648 :0 :- 6912
- 6913 : : :- 27648
- 27649 :- 32512
<=- 32513
输出范围:电压
0
11.7589 :10.0004
10.0000 : 0
0 to 10V 1 to 5V
0
5.8794 :5.0002
5.0000 :1.0000
0
11.7589 :10.0004
10.0000 : 0 : : : : : : :-10.0000
- 10.0004 :- 11.7589
0
± 10V
0 0.9999
0
0
输出范围: 电流
0
23.515 :20.0007
20.000 : 0
0 to 20mA 4 to 20mA
0
22.81 :20.005
20.000 :4.000
0
23.515 :20.0007
20.000 : 0 : : : : : : :-20.000
- 20.007 :- 23.515
0
± 20mA
0 3.9995
0
0