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Serial Pinouts
364 IOLAN SDS/SCS/STS/MDC User’s Guide, Version 4.0
The power in pin (pin 12) can be 9-30V DC.
DB25 Female
This section defines the pinouts for the DB25 female connection used on the 1-port IOLAN. The
power out pin (Pin 9) is available in the SDS model only.
Pin 1
Pin 14
Pin 25
Pin 13
The following table provides pinout information:
18 RTS+
19 RTS-
20 (out) DTR
21 RxD+ RxD+
22 RxD- RxD-
25 CTS+
Pinout
EIA-232
EIA-422
EIA-485
Full Duplex
EIA-485
Half Duplex
1 Shield Shield Shield Shield
2 (in) RxD
3 (out) TxD
4 (in) CTS
5 (out) RTS
6 (out) DTR
7 GND GND GND GND
8 (in) DCD
9 Power out Power out Power out Power out
12 Power in Power in Power in Power in
13 RTS-
14 RxD+ RxD+
Pinout
EIA-232
EIA-422
EIA-485
Full Duplex
EIA-485
Half Duplex