Configuration
General Description
Two configurations of the IFM interface are available:
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Automatic configuration (Auto-Speed sensing ON, factory setting): when connected to the Modbus network, the IFM interface automatically detects the network parameters.
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Personalized configuration (Auto-Speed sensing OFF): the user can personalize the network parameters 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 |
|
|
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. |
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:
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Baud rate: 4800, 9600, 19200, and 38400 Baud.
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parity: even, odd, and none (it is possible to select one stop bit or two stop bits in case of no parity).