Modbus RTU help

Hello guys, I am doing an implementation of a power meter to arduino with Modbus RTU protocol. By the way, I am using Schneider's PM1200. Maybe you can suggest a library that I can use. I already used the library of SimpleModbusV2 but it did not work. What should be my connections?

I am new with Modbus, I hope someone can help.


You shouldn't open a second topic regarding the same problem. The library works but you expect something from the hardware that your hardware isn't able to provide. Discuss that in the original thread (

i recently started with modbus and have all my problems fixed. my biggest help was the modbus library made by