Siemens SIMATIC Ident - Pin Assignment RF290 R

Readers
5.7 SIMATIC RF290R
SIMATIC RF200
130 System Manual, 07/2015, J31069-D0227-U001-A9-7618
5.7.3
Pin assignment RF290R
RS422/RS232
Table 5- 9 Pin assignment of the RS-422/RS 232 interface
Pin
Pin
Device end 8-
pin M12
Interface assignment
RS-422
RS-232
1
+24 V
+24 V
2 - Transmit RXD
3
0 V
0 V
4
+ Transmit
TXD
5
+ Receive
not used
6
- Receive
not used
7
not used
not used
8
Ground (shield)
Ground (shield)
Digital I/O
only possible in PC mode (RS-232)
Table 5- 10 Pin assignment of the digital I/O interface
Pin
Pin
Device end 4-
pin M12
Socket assignment
1
DO - relay contact COM (Common)
2
DO - relay contact NO (Normaly Open, NO contact)
3
DI - switched input, +24 V
4 DI - ground, 0 V
Figure 5-16 Pin assignment of the power supply connector