Omron G9SP Series Reference Manual page 39

Specifications for All Function Blocks
Timer Operation Conditions for Discrepancy Time
When operation is started, calculation of the discrepancy time will start
regardless of whether a function test is required if the status of input 1 and
input 2 are discrepant.
Input 1
Input 2
Discrepancy
Error
Discrepancy
Timer
Discrepancy Time
Start of operation
Calculation of the discrepancy time will continue while the input status are dis-
crepant even if the input status changes.
Input 1
Input 2
Discrepancy
Error
Discrepancy Time
Section 3-2
17