ABB S800 I/O Manual page 97

Appendix A Specifications
3BSE020926-600
Table 21. FCI PROFIBUS Connections (X2), Also Used as Service Port
Pin Designation
1 Shield
2 NC
3 RxD/TxD-P
4 RTS
5 DGND
6 VP
7 NC
8 RxD/TxD-N
9 DGND
Description
Shield/protective ground
Not used
Receive data/transmit data positive
Direction control (optional)
Data ground
Supply of termination resistance (5V)
Not used
Receive data/transmit data negative
Data ground (if RTS is used)
Connections
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