Cpu St20 And Cpu Sr20 Wiring Diagrams - Siemens Simatic S7 Series System Manual

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A.2.1.3

CPU ST20 and CPU SR20 wiring diagrams

Table A- 17
CPU ST20 DC/DC/DC (6ES7 288-1ST20-0AA0)
Table A- 18
Pin
1
2
3
4
5
6
7
8
9
10
11
12
S7-200 SMART
System Manual, 09/2015, A5E03822230-AC
Wiring diagram for the CPU ST20 DC/DC/DC (6ES7 288-1ST20-0AA0)
Connector pin locations for CPU ST20 DC/DC/DC (6ES7 288-1ST20-0AA0)
X10
1M
DI a.0
DI a.1
DI a.2
DI a.3
DI a.4
DI a.5
DI a.6
--
--
--
--
A.2 S7-200 SMART CPUs
X11
DI a.7
DI b.0
DI b.1
DI b.2
DI b.3
L+ / 24 V DC
M / 24 V DC
Functional Earth
--
--
--
--
Technical specifications
24 V DC Sensor Power
Out
X12
2L+
2M
DQ a.0
DQ a.1
DQ a.2
DQ a.3
DQ a.4
DQ a.5
DQ a.6
DQ a.7
L+ / 24 V DC
M/ 24 V DC
575

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