Mounting, connecting up and commissioning
3.5 Pin assignment of the socket for the external power supply
Communications module RF120C with application blocks for S7-1200 and S7-1500
20
Operating Instructions, 07/2013, C79000-G8976-C328-01
3.5
Pin assignment of the socket for the external power supply
Figure 3-5
Socket for the external 24 VDC power supply (view from above)
Table 3- 4
Pin assignment of the socket for the external power supply
Pin
Labeling
Function
1
L+
+ 24 VDC (max. 1 A)
2
M
Ground reference for + 24 VDC
3
Ground connector
3.6
Pinout of the D-sub socket
RS-422 interface
Table 3- 5
Pinout of the D-sub socket
Pin
Description
Pin
Description
1
24 VDC
6
-RxD
2
- not used -
7
+RxD
3
- not used -
8
-TxD
4
+TxD
9
- not used -
5
GND
Housing Ground connector