Rs-232 pin configuration – Honeywell DOLPHIN 9951 User Manual
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RS-232 Pin Configuration
Refer to this table if you want to make your own cables.
To do so, you must determine if your host RS-232 device is:
• 9-pin or 25-pin and
• configured as a DCE or DTE device.
Base/Host Port (DCE)
IBM AT DB9
(DTE)
IBM XT DB25
(DTE)
Modem DB25
(DCE)
Pin / Input Signal
2 / (RD)
2
3
2
3 / (TD)
3
2
3
5 / (SG)
5
7
7
4 / (DTR)
4
20
6
6 / (DSR)
6
6
20
7 / (RTS)
7
4
5
8 / (CTS)
8
5
4