Configured Constant Sweep Setting Parameter
If the configured constant sweep mode is enabled in the PLC, the sweep time value must
also be selected. The configured constant sweep setting parameter can be overridden by
the active constant sweep setting parameter during RUN mode, but upon going from STOP
to RUN mode, the configured constant sweep setting parameter value is copied to the ac-
tive constant sweep setting parameter. This allows the user to maintain a configured set-
ting, while fine tuning the setting during RUN mode with the active constant sweep setting
parameter. If the configured constant sweep mode is disabled, this parameter is ignored.
The configured constant sweep value may range between 5 and 200 milliseconds, inclusive.
Use the Right cursor key to scroll through the PLC parameters until the configured constant
sweep setting (CFG CONS TM) parameter is displayed. To set the sweep time, enter a val-
ue between 5 and 200 milliseconds, inclusive, and press the ENT key. The default setting is
3. SVCREQ #26: Interrogate I/O
Use SVCREQ function #26 to interrogate the actual modules present and compare them
with the rack/
slot configuration, generating addition, loss, and mismatch alarms, as if a store
configuration had been performed. This SVCREQ will generate faults on both the PLC and
O fault table, depending on the fault. This function has no parameter block and always
outputs power flow.
The time for this SVCREQ to execute depends on how many faults exist.
Therefore, execution time of this SVCREQ will be greater for situations
where more modules are faulted.
In the following example, when input %I0251 is ON the actual modules are interrogated
and compared to the rack/
slot configuration. Output %Q0001 is turned on after the
SVCREQ is complete
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