Cables And Connectors; Db9F Null Modem Cable - Honeywell Q7055A Installation Instructions & User Manual

BUILDING NETWORK ADAPTER BNA-1C/2CS/2DN

7 Cables and Connectors

7.1

DB9F Null Modem Cable

Figure 7-1: Serial connectors
The female connector is numbered as shown below:
42
1 DCD
2 RxD
3 TxD
4 DTR
5 Ground
6 DSR
7 RTS
8 CTS
9 RI
EN1B-0198GE51 R0801