Siemens SIMATIC RF185C - Page 43

Connection
5.5 Connecting the communications module
SIMATIC RF185C, RF186C, RF188C, RF186CI, RF188CI
Operating Instructions, 04/2020, C79000-G8976-C512-03
43
Table 5- 4 Pin assignment reader interface; M12 socket (8-pin, A-coded)
Pin
Assignment
View of M12 socket, 8-pin
RS422
RS232
1
+24 V
+24 V
2
-RxD
--
3
0 V
0 V
4
+RxD
RxD
5 +TxD +5 V
6
-TxD
--
7
--
TxD
8 Functional ground
/ shielding
Functional ground
/ shielding
I/O interface (RF18xCI)
Note that a single input, a single output or an IO-Link module (e.g. IO-Link module K20) can
be connected to the I/O interface.
Table 5- 5 Pin assignment I/O interface; M12 socket (5-pin, A-coded)
Pin
Assignment
View of M12 socket, 5-pin
1
1L+: +24 V, IO-Link
2 2L+: +24 V, for IO-Link module
Class B
3
1N: GND, IO-Link
4 C/Q: Data cable for
• IO-Link
• a single digital input
• a single digital output
5 2N: GND, for IO-Link module
Class B