Honeywell Q7055A - Cables and Connectors; DB9 F Null Modem Cable

BUILDING NETWORK ADAPTER BNA-1C/2CS/2DN
42 EN1B-0198GE51 R1004B
7 Cables and Connectors
7.1 DB9F Null Modem Cable
Figure 7-1: Serial connectors
The female connector is numbered as shown below:
1 DCD
2 RxD
3 TxD
4 DTR
5 Ground
6 DSR
7 RTS
8 CTS
9 RI