Omron NE1A-SCPU01 - 2006 Operation Manual page 130

Section 5-1
Common Functions
Setting the Total ON Time Alarm Threshold with the Network Configurator
The maintenance mode (Maintenance Counter Mode Choice) and alarm
threshold (Threshold Maintenance Counter) can be set for each local input,
test output, and local output terminal.
If the alarm threshold (Threshold Maintenance Counter) is set to 0, the Con-
troller will not compare the count or time PV to the alarm threshold SV.
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