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Pinouts and Cabling Diagrams 208
EIA-232 Cabling Diagrams
EIA-232 Cabling Diagrams
This section shows how to create EIA-232 cables that are compatible with the Device Server.
Terminal DB25 Connector
The following diagrams show how the null modem cable should be configured when connecting to a
terminal DB25.
DB25 Male
2 (TxD) 3 (RxD)
3 (RxD) 2 (TxD)
4 (RTS) 5 (CTS)
5 (CTS) 4 (RTS)
6 (DSR) 20 (DTR)
7 (GND) 7 (GND)
20 (DTR) 6 (DSR)
DB25 Female
3 (TxD) 3 (RxD)
2 (RxD) 2 (TxD)
5 (RTS) 5 (CTS)
4 (CTS) 4 (RTS)
20 (DSR) 20 (DTR)
7 (GND) 7 (GND)
6 (DTR) 6 (DSR)
IOLAN DS1
DB25 (DTE)
Terminal DB25
(DTE)
IOLAN DS1
DB25 (DCE)
Terminal DB25
(DTE)