Configuration

General Description

Two configurations of the IFM interface are available:

Automatic configuration (Auto-Speed sensing ON, factory setting): when connected to the Modbus network, the IFM interface automatically detects the network parameters.
Personalized configuration (Auto-Speed sensing OFF): the network parameters can be personlized using the EcoStruxure Power Commission software.

Automatic Configuration

The Modbus slave address is defined by the two address rotary switches on the front panel of the IFM interface. When connected to the Modbus serial line network, the IFM interface automatically detects the network speed and parity. The Auto-Speed sensing algorithm tests the available Baud rates and parities and automatically detects the Modbus communication network parameters. The Modbus master must send at least 25 frames on the Modbus network in order to allow the Auto-Speed sensing algorithm to work.

The transmission format is binary with one start bit, eight data bits, one stop bit in case of even or odd parity, and two stop bits in case of no parity.

If the Auto-Speed sensing algorithm does not detect the network parameters, it is recommended to follow this procedure:

Step	Action
1	Set up the IFM interface to Modbus address 1.
2	Send a read multiple register request (function code 0x03) to slave 1, at any address and for any number of registers.
3	Send this request at least 25 times.

NOTE: If the network speed or parity is changed after the IFM interface has automatically detected these settings, the IFM interface must be restarted (power off/power on) in order to detect the new network parameters.

Personalized Configuration

The Modbus slave address is defined by the two address rotary switches on the front panel of the IFM interface.

Disable the Auto-Speed sensing option and set the following Modbus communication network parameters with the EcoStruxure Power Commission software:

Baud rate: 4800, 9600, 19200 and 38400 Baud.
parity: even, odd, and none (it is possible to select one stop bit or two stop bits in case of no parity).

NOTE: It is not possible to change the Modbus address or the status of the locking pad with the EcoStruxure Power Commission software.

IFM Interface with Legacy Application Firmware

The IFM interface is shipped with the standard firmware. This standard firmware responds to one unique Modbus slave address, set between 1 and 99 by the two rotary switches on the front panel of the IFM interface.

The IFM interface with the standard firmware is not compatible with legacy applications using four Modbus slave addresses:

1 address x from 1 to 47 for the circuit breaker manager
1 address x+50 for the chassis manager
1 address x+100 for the metering manager
1 address x+200 for the protection manager

The IFM interface is compatible with legacy applications using four Modbus slave addresses after replacement of the standard firmware by the legacy firmware. To replace the IFM firmware, contact your Schneider Electric customer support, with indication of the IFM part number, TRV00210 or LV434000.

NOTE:

Do not mix IFM interfaces with standard firmware with IFM interfaces with legacy firmware on the same Modbus-SL network.
When an IFM interface with legacy firmware is connected to a BCM ULP module, its Modbus traffic status LED is steady ON.
The IO module can be connected to an IFM interface with legacy firmware to perform the cradle management application.