User Manual Part 3
Communication modules
7.3 ASM 456
SIMATIC RF300
7-26 System Manual, Release 04/2006, J31069 D0166-U001-A2-7618
Wiring M12, 7/8” connector
The tables below contain the connector assignment for the M12, 7/8” connector:
Table 7-6 Connection assignment for M12 connector (PROFIBUS DP)
Pin Assignment View of M12 connector
(wiring side)
1 Supply positive (P5V2) *
2 Data line A (RxD / TxD-N)
3 Data reference potential (M5V2) *
4 Data line B (RxD / TxD-P)
5 Shield
Thread Shield
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*) Can only be used for the M12 terminating resistor. Looping the voltage through to the next
connector via a 5-core cable is not permitted.