Siemens S7-1200 System Manual page 876

Technical specifications
A.5 CPU 1215C
Table A- 83
①
②
Note: X11 connectors must be gold. See Appendix C, Spare Parts for order number.
876
Pin
12 DI a.5
13 DI a.6
14 DI a.7
15 DI b.0
16 DI b.1
17 DI b.2
18 DI b.3
19 DI b.4
20 DI b.5
CPU 1215C DC/DC/Relay (6ES7 215-1HG40-0XB0)
24 VDC Sensor Power Out
For additional noise immunity, connect "M" to chassis ground even if not using sensor supply.
For sinking inputs, connect "-" to "M" (shown). For sourcing inputs, connect "+" to "M".
X10
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X11 (gold)
DQ b.1
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S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
X12