Pinouts and Cabling Diagrams 421
Serial Pinouts
RJ45 (for desktop and rack mount models)
This section defines the pinouts for the RJ45 connection. 1-port, 2-port, and 4-port desktop IOLAN
models have a 10-pin RJ45 connector, however they can support an 8-pin connector if there is no
requirement for power in (pin 1) or power out (pin 10). The STS8-D and all rack mount IOLAN
models have an 8-pin RJ45 connector.
The following table provides pinout information:
The power in pin (Pin 1) can be 9-30VDC. The 2-port IOLAN has power in on Port 2 only. The 4-
port IOLAN has power in on Port 4 only.
Pinout
10-pin
Pinout
8-pin
EIA-232
EIA-422
EIA-485
Full Duplex
EIA-485
Half Duplex
1 Power In Power In Power In Power In
2 (in) 1 DCD
3 (out) 2 RTS TxD+ TxD+ DATA+
4 (in) 3 DSR
5 (out) 4 TxD TxD- TxD- DATA-
6 (in) 5 RxD RxD+ RxD+
7 6 GND GND GND GND
8 (in) 7 CTS RxD- RxD-
9 (out) 8 DTR
10 Power out Power out Power out Power out
Pin 1 Pin 10
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