Rockwell Automation AADvance Controller Configuration Guide - Manual (Page 120)

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ICSTT-RM405f-EN-P
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Configuration Guide (AADvance Controller)
Threshold Values for Digital Inputs
The module determines the channel state and the line fault status by comparing the
channel input voltage with defined threshold values. You can define your own
threshold values or use a set of default values. The values you choose for the module
are inherited by each channel; you can define different thresholds for individual
channels later.
An indeterminate region is defined between the closed and open status to allow for
marginal faults in the external wiring or sensor.
Note: When the system is operational you should change these values only through
an on-line update.
The AADvance controller provides hysteresis on the thresholds for increasing and
decreasing values to prevent chatter. The Workbench updates the reporting values
during every application cycle.