RTU Modbus difference between PM5110 and PM5350

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Good Day Everyone!

I have some problem to read Modbus registers over RTU mode. I believe there are a lot of expert in this community. I will be grateful if you help me how to sort out this problem.

My objective is to read the current and voltage data using raspberry pi 4. I develop one code which make the raspberry pi4 to communicate with power meter using Modbus over RTU. I successfully manage to read the data using Schneider power meter (PM5350) but when I use Schneider power meter (PM5110) it fail. I saw the registers for both of power meter is same but still I cannot get the data from PM5110. I already check the wiring connection, baud rate and address. Everything is good but still I cannot get the data from the power meter.

Another curiosity is that every model have different offset of registers? If do so how to know about the offset?

Thank You.

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