5.15.1 Monitoring
I/O monitoring starts after enabling I/O element and setting up I/O parameters as it is
shown below:
5.15.2 Event Generating
Events happen when the value of enabled I/O intersects thresholds (enter, exit or on both)
predefined by High and Low level thresholds. Table below defines all available values of I/O
settings.
Setting
Priority
High level
Low level
Generate event
Average constant
5.15.3 Hysteresis
I/O elements can generate events according to hysteresis algorithm. If I/O event operand
"Hysteresis" is selected, events will be generated as it is shown in the illustration below (I/O
speed is taken as I/O value example):
Figure 48 I/O settings
Value
low, high
maximum threshold
minimum threshold
on interval enter, on interval exit, on both enter and exit
1 – 2
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Figure 49 Digital Input event generation example
Figure 50 Hysteresis parameter configuration
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