IOLAN SDS/SCS/STS/MDC User’s Guide, Version 4.0 363

Pinouts and Cabling

Diagrams Appendix D

D

Serial Pinouts

DB25 Male
This section defines the pinouts for the DB25 male connection used on the 1-port IOLAN. The power
out pin (Pin 9) is available in the SDS model only.
Pin 13
Pin 25
Pin 14
Pin 1
The following table provides pinout information:
Pinout
EIA-232
EIA-422 EIA-485
Full Duplex EIA-485
Half Duplex
1Shield Shield Shield Shield
2 (out) TxD
3 (in) RxD
4 (out) RTS
5 (in) CTS
6 (in) DSR
7GND GND GND GND
8 (in) DCD
9Power out Power out Power out Power out
12 Power in Power in Power in Power in
13 CTS-
14 TxD+ TxD+ DATA+
15 TxD- TxD- DATA-