Siemens SIMATIC RF185C Operating Instructions Manual page 37

Table 5- 3
Pin
Table 5- 4
Pin
SIMATIC RF185C, RF186C, RF188C
Operating Instructions, 10/2018, C79000-G8976-C512-01
Pin assignment power supply; M12 socket (4-pin, L-coded)
Assignment
1 L1: +24 V (brown)
2 N2: 0 V load supply (white)
3 N1: 0 V (blue)
4 L2: +24 V (black)
Pin assignment reader interface; M12 socket (8-pin, A-coded)
Assignment
RS422
1 +24 V
2 -RxD
3 0 V
4 +RxD
5 +TxD
6 -TxD
7 --
8 Functional ground
(PE) / shield
5.4 Connecting the communications module
RS232
+24 V
--
0 V
RxD
+5 V
--
TxD
Functional ground
(PE) / shield
View of M12 socket, 4-pin
View of M12 socket, 8-pin
Connection
37