CONECTION PM8000 - PLC WITH MODBUS TCP/IP

[Chriskero]

Good,

I am looking to read various values of power, voltage and current from the PM8000 using the modbus tcp IP protocol, it turns out that the registers are according to the MODBUS mapping of the PM8000 in the addresses 3000-3150, the problem starts when these values are values of type FLOAT and reading registers in the addresses 3000-3150 are bit type and not word.
What solution can I give to be able to read correctly those values?
I would like to communicate with a Siemens PLC.

Thank you very much

[Mehran_Mehrnia · Accepted solution]

Hi @Chriskero 

All Float32 registers(Single-precision floating-point format) in PM8000 Modbus map, are two 16-bit registers(two words) in big endian format(the most significant word is stored at the lowest memory address) that need to be swapped:

For any queries regarding Metering & Power Quality, kindly post your questions in the following forum link:
https://community.se.com/t5/Metering-Power-Quality/bd-p/power-metering

Thank you.

Best regards,

-Mehran
L3 Expert Tech Support Specialist