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This alarm means that the trip unit hardware has lost its time. This alarm is part of the default MicroLogic device profile and will be added to each MicroLogic device added to the system unless a custom profile is created without it.
To clear this alarm condition, the user can write a 1 to the Device Date/Time reset tag--LPHD1\ZRsDateTm\ctlVal. This will sync the trip unit's clock to the server time.
If the user is not interested in receiving this alarm, it can be disabled or the alarm tag and variable tag can be deleted from the system.
Keywords: PLS, PLSCADA, PL SCADA, Power SCADA, StruxureWare PowerSCADA Expert, SPE 7.1, 7.2, 7.10, 7.20, micro logic, tripunit