Rockwell Automation T7485 ICS Regent+Plus Isolated Guarded Output Modules - Manual (Page 17)

Isolated Guarded Digital Output Module (T7485)
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Output Module Definition
In addition to configuring output point definitions, you can
configure the output module definition to represent the
combined state of all eight output points.
The module definition represents the eight output point
definitions as signed, 16-bit integers. In this format, the eight
outputs are the least significant bits with output point 1 as the
LSB. The eight most significant bits are always zero.
The module definition names are not normally used for
control purposes. However, they do provide convenient single
name references to all eight outputs points when reporting
status information to operator interface equipment.
Programming
Outputs are controlled by writing application programs that
solve for output values. For example, placing an output tag
name on a coil in ladder logic will cause the output to turn on
when there is power flow to the coil in the ladder logic rung.
To program fault tolerant outputs two output coils driven by
the same control logic are used as shown in Figure 10.
Figure 10. Programming Fault Tolerant Outputs.
In this illustration A, B, C, D represent various logic elements
used to drive the outputs; XV103A represents the output on
one Guarded output module; and XV103B represents the
output on the other Guarded output module.
Maintenance
No periodic maintenance or calibration is required for this
module.
Fuses can be removed and replaced without removing the
module from the I/O chassis. Turning the fuse holder one-