Siemens Simatic S7 Series System Manual page 576

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Technical specifications
A.2 S7-200 SMART CPUs
Table A- 19
CPU SR20 AC/DC/Relay (6ES7 288-1SR20-0AA0)
Table A- 20
576
Wiring diagram for the CPU SR20 AC/DC/Relay (6ES7 288-1SR20-0AA0)
Connector pin locations for CPU SR20 AC/DC/Relay (6ES7 288-1SR20-0AA0)
Pin
X10
1
1M
2
DI a.0
3
DI a.1
4
DI a.2
5
DI a.3
6
DI a.4
7
DI a.5
8
DI a.6
9
--
10
--
11
--
12
--
X11
DI a.7
DI b.0
DI b.1
DI b.2
DI b.3
L1 / 120 - 240 V AC
N / 120 - 240 V AC
Functional Earth
--
--
--
--
System Manual, 09/2015, A5E03822230-AC
24 V DC sensor power
output
X12
1L
DQ a.0
DQ a.1
DQ a.2
DQ a.3
2L
DQ a.4
DQ a.5
DQ a.6
DQ a.7
L+ / 24 V DC Out
M / 24 V DC Out
S7-200 SMART

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