Hi have have tried this but without succes. Schermata 2018-02-19 alle 12.39.29.png and always give me: pi@RevPi4067:~ $ piTest -r Modbus_Action_Status_1 1 Byte-Value of Modbus_Action_Status_1: 1 dez (=01 hex) 1 Byte-Value of Modbus_Action_Status_1: 1 dez (=01 hex) 1 Byte-Value of Modbus_Action_Statu...

Hi Volker, i dont really understand the means of piTest -r Modbus_Master_Status and piTest -r Modbus_Action_Status_1 commands. this is my values: pi@RevPi4067:~ $ piTest -r Modbus_Master_Status 1 Byte-Value of Modbus_Master_Status: 0 dez (=00 hex) 1 Byte-Value of Modbus_Master_Status: 0 dez (=00 hex...

And here the table of registers that i need to read:

From BTicino Manual i read this:
Now I'll will try to change registers.

Ok i take i screenshot for you before going to work.

It's seam that the slave respond to "1".

I'll write after that i change cable and i re-check all ...after your indication.

Hi Volker, regarding the connection (i dont realy unrdestand your "not mixed up the A and B wires") i think that is fine but to be more precise tomorrow i will check better the wires and the connection in general... also changing the wire with a different one. 1) i think that the parameter...

Hi Wolker thank for fast reply. The Master is RevolutionPICore3 with ModBus RTU Master Virtual Device Configured. The Slave is my meter BTicino F3N3000 as you can see in my preview post. I wrote a test Class in Python that read the process image but i try it also with some piTest command. Yes i can ...

Hi all, i'm starting with revolution pi trining to connect the RevolutionPI3 with USB-RS485 to BTICINO F3N3000 Energy Meter (that have ModBus RS_485). I configured in PiCtory all things... but i have alway 0 into the process image for all my variable. I saw into the logs this: [73564.385133] piContr...