ludo10quad - 2015-11-20

Hello, I try to communicate in a display modbus tcp ip .
The Raspberry Pi is not responding to my queries .
Can you tell me the method and the restrictions on the MODBUS TCP IP communication?
Should he says I a slave ?
Should there that I declare variables of trade ?
For I do not need to do this when I work with SoMachine (SCHNEIDER )

Thanks
Ludovic

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