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Siemens SIMATIC S7
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Technical specifications
A.2 S7-200 SMART CPUs
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
693
Table A- 19 Wiring diagram for the CPU SR20 AC/DC/Relay (6ES7288-1SR20-0AA0)
CPU SR20 AC/DC/Relay (6ES7288-1SR20-0AA0)
24 V DC sensor power
output
Table A- 20 Connector pin locations for CPU SR20 AC/DC/Relay (6ES7288-1SR20-0AA0)
Pin
X10
X11
X12
1
1M
DI a.7
1L
2
DI a.0
DI b.0
DQ a.0
3
DI a.1
DI b.1
DQ a.1
4
DI a.2
DI b.2
DQ a.2
5
DI a.3
DI b.3
DQ a.3
6
DI a.4
L1 / 120 - 240 V AC
2L
7
DI a.5
N / 120 - 240 V AC
DQ a.4
8
DI a.6
Functional Earth
DQ a.5
9
--
--
DQ a.6
10
--
--
DQ a.7
11
--
--
L+ / 24 V DC Out
12
--
--
M / 24 V DC Out

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