120 Rockwell Automation Publication 2080-UM002M-EN-E - April 2022
Chapter 6 Micro870 Controller Distributed Network Protocol
When there is a change in the configuration for the number of events, you
must download the project into the controller for the setting to take effect.
Control Generating Event
The controller checks all elements in the Object Data for changes at the end of a
scan and generates events where needed.
The key method to turn on and off event generating by ladder logic is to assign
the variable to be used for controlling into the Trigger Event and Disable
Change Events field.
The following example shows how to control the event generation condition by
using the Deadband for Analog Input Objects.
In this example, for 16-bit Analog Input point 0, if the absolute value of the
difference between the present value of variable AnalogValue1 and the value
that was most recently queued as an event for that point exceeds the deadband
value in variable AnalogV1Deadband, then an event is generated for that point.
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