Set the Redundancy Module Date and Time
The redundancy module date and time determines the time stamp that is recorded in event logs in the
FactoryTalk® Linx
Redundancy Module Configuration Tool (RMCT).
IMPORTANT:
We recommend that you set the redundancy module date and time when you commission a system. We also recommend that you periodically check the date and time settings to make sure that they match the settings of the controller. Regular verification of the date and time keeps the event logs of the redundancy modules accurate. Incorrect date and time information complicates troubleshooting if an event or error occurs on your redundant system.
The following methods can be used to set the date and time of a redundancy module:
- CIP Sync™Time Synchronization
- Manual settings in the RMCT
- Custom MSG instruction in the controller program
IMPORTANT:
If the redundancy module receives its time via Time Synchronization, the time that is received from the Grandmaster overrides the date and time set manually in the RMCT or by an MSG instruction.
To understand the result of power loss on date and time settings, refer to the following table.
Power Loss Scenario | Result |
|---|---|
Power is cycled to a redundancy module without a qualified partner | Date and time settings are not retained. |
Power is cycled to a redundancy module with a qualified partner and the partner remains active during the power cycle | The date and time is transferred from the active partner to the other module during power-up. |
Both partner modules shut off during a power failure | Date and time settings are not retained. |
Provide Feedback