Date Management
Introduction
Each module of the IMU uses its date to time-stamp events and history registers.
The date of the IMU modules is updated in two steps:
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External synchronization: The Modbus master synchronizes the IFM or IFE interface.
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Internal synchronization: The IFM or IFE interface synchronizes all ULP modules connected in the IMU.
External Synchronization
There are three ways to externally synchronize the IFM or IFE interface:
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Manually with the EcoStruxure Power Commission software.
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By programming of the Modbus master using:
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either the Modbus function set date and time: function code 43-16 Write Functions.
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or, the interface command set absolute time through the IFM, or IFE interface.
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Automatically:
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With IFE interface configured as SNTP mode.
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The communication interface is considered as externally synchronized if the last synchronization has occurred within the last 2 hours.
Internal Synchronization
When the IFM or IFE interface receives the date and time, it broadcasts the date and time to all the ULP modules connected in the IMU.