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:

1. External synchronization: The Modbus master synchronizes the IFM , IFE, or EIFE communication interface.

2. Internal synchronization: The communication interface broadcasts the date and time to the MicroLogic X control unit and the other ULP modules connected in the IMU.

External Synchronization

There are several ways to externally synchronize the IFM , IFE, or EIFE communication interface:

• Manually:

  • With the EcoStruxure Power Commission software

  • With IFE or EIFE webpage

• By programming of the Modbus master using:

  • either the Modbus function set date and time: function code 43-16 Write Functions.

  • or, the interface command set absolute time through the IFM, IFE or EIFE interface.

• Automatically:

  • With IFE or EIFE 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

When the IFM, IFE or EIFE communication interface receives the date and time, it will broadcast the date and time to all the ULP modules connected in the IMU.