Input Data Update Flowchart

ControlLogix®
 controllers update data asynchronously with the execution of logic.
IMPORTANT:
GuardLogix®
 standard inputs are updated just like
ControlLogix®
 standard inputs, but
GuardLogix®
 safety input tags (inputs, consumed and mapped) are updated and frozen at the beginning of safety task execution.
Input Data Update
This image shows and example of how input data is updated.
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