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Cabling Guide
Cabling Guide C
The following guide describes pinouts and cables for both
the IOLAN+ (DB25) and IOLAN+
(RJ45) units. Both
units are wired DTE.
Any cable you use should be shielded to comply with FCC
requirements. Be careful not to run RS-232 wiring near
fluorescent lights or electric motors.
Maximum cable lengths for RS-232 are specified at 60m
(200 feet) but are proportional to baud rates - the higher the
baud, the smaller the cable should be. A good rule of thumb
is that a 19200 bps connection should not be used on cable
lengths in excess of 15m (50 feet). Also, a 9600 bps signal
operates reliably up to a distance of approximately 30m
(100 feet). Cables of greater lengths may seem to work
correctly but the connection will be less reliable.
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