47
W&T
Digital-I/O Extender Sets
Subject to error and alteration
Cable break response
The functionality of the glass fiber optic connection is
cycli cally monitored by a special safety communications
protocol. The status of the connection is indicated by the
Link
LED and by a signal on the
Link
switching output.
An 8x DIL switch is provided on the top side of the unit for
configuring the cable break response, whereby the status of
the outputs when the fiber optic connection is interrupted
can be set for each individual output. The arrangement of the
DIL switches and output can be found on the label on the top
side of the unit.
The factory default setting is for all switches in the
Off
position. If this setting is not changed, all the digital outputs
on the unit will turn off when the fiber optic connection is
interrupted.
This response can be inverted by setting the DIL switch
associated with an output to ON. This setting can be made
individually for each of the eight outputs.
