38
W&T
Digital-I/O Extender Sets
When sizing the output voltage supply, the required current
must always be taken into consideration. If the selected
voltage for supplying the loads varies between 12V and
24V DC, the signal converter and the switched loads can be
supplied from the same source.
Cable break behavior
Should the glass fiber connection be interrupted or if the
glass fiber cable is not connected, the default response is for
all digital outputs to go directly to the
Off
state. A different
response can be configured individually for each channel
using DIL switches inside the unit. Simply set the DIL switches
for the corresponding in- and outputs in both Digital-I/O <>
Glass Fiber converters to
ON
. The names of the DIL switches
In1
,
In2
, Out1 and
Out2
can be found on the circuit board
near the switch.
To change for example the
cable break behavior of the
first I/O channel, set DIL
switch
In1
on the first inter-
face AND DIL switch
Out1
on the second interface to
ON
. Now when there is a
cable break or the glass
fiber cable is dis connected,
the output goes directly to
the
ON
state.
In this way each of the four channels can be configured
individually as desired.
Note: Changing the setting of a DIL switch on only one
Interface causes the signal to be sent inverted. When
voltage is present on the input the corresponding
output is turned off.
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