Reading Response message in modbus using python

Question

I am trying send the query and get the response message (data) through modbus using python with the help of pymodbus module.

response=client.read_holding_registers(19200,126,unit=135)    
print(response) 

The response that is being printed is the request message sent and the process status. I am interested in reading the data sent from the slave and not the process status. Can you please help me with this?

Answer 1

You should use the .registers

Try the following procedure:

response = client.read_holding_registers(19200, 126, unit=135)    

if not response.isError():
    print(response.registers)

else:
    # Handle Error 

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[NOTE]:

• .isError() method is for pymodbus 1.4.0 and above.