Siemens SIMATIC S7-1200 CP 1243-8 IRC - Electrical Connectors; Power Supply

LEDs and connectors
2.3 Electrical connectors
CP 1243-8 IRC
Operating Instructions, 02/2018, C79000-G8976-C385-03
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2.3
Electrical connectors
2.3.1
Power supply
Power supply
The 3-pin socket for the external 24 V DC power supply is located on the top of the module.
The matching plug ships with the product.
You will find the pin assignment of the socket in section Pin assignment of the socket for the
external power supply (Page 184).
Figure 2-2 Socket for the 24 V DC power supply
Note
You only need to connect the external power supply if you use a TS module on the CP.