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:
-
External synchronization: The Modbus client synchronizes the IFM or IFE/EIFE communication interface, or the BSCM Modbus SL/ULP module in Modbus SL only mode, and in Modbus SL and ULP mode.
-
Internal synchronization:
-
The communication interface broadcasts the date and time to the MicroLogic control unit or trip unit and the other ULP modules connected in the IMU.
-
for ComPacT NSX or PowerPacT H-, J-, and L-frame circuit breakers with BSCM Modbus SL/ULP module:
-
if the BSCM Modbus SL/ULP module is in ULP only mode, then all ULP modules connected in the IMU, including the BSCM Modbus SL/ULP module itself, are synchronized by the IFM or IFE communication interface.
-
if the BSCM Modbus SL/ULP module is in Modbus SL only mode, or in Modbus SL and ULP mode, then all ULP modules connected in the IMU are synchronized by the BSCM Modbus SL/ULP module.
-
-
External Synchronization
There are three ways to externally synchronize the IFM or IFE/EIFE communication interface, or the BSCM Modbus SL/ULP module in Modbus SL only mode, or in Modbus SL and ULP mode:
-
Manually with EcoStruxure Power Commission software.
-
By programming of the Modbus client using:
-
either the Modbus function set date and time: function code 43-16
-
or, set the absolute time command through the IFM or IFE/EIFE communication interface, or through the BSCM Modbus SL/ULP module.
-
-
Automatically with IFE/EIFE communication interface configured as SNTP mode.
The communication interface is considered as externally synchronized if the last synchronization has occurred within the last 2 hours.
Internal Synchronization
The date and time is received from:
-
The IFM communication interface
-
Or the IFE/EIFE communication interface
-
Or the BSCM Modbus SL/ULP module in Modbus SL only mode, or in Modbus SL and ULP mode
The date and time is broadcast to all the ULP modules connected in the IMU.