api write_coils returns Exception

[andyhebiao]

Versions

• Python: 3.11
• OS: win10 22H2
• Pymodbus: 3.7.4
• Modbus Hardware (if used):

Pymodbus Specific

class pymodbus.client.serial.ModbusSerialClient
methode write_coils

Description

trying to write coils, doesn't work, the response shows "Exception Response(143, 15, IllegalAddress)". The other APIs for read single coil, read discret register, read registers works with the same parameters.

Code and Logs

#  call API and then print the response

# please use the following to format logs when posting them here
 client = ModbusSerialClient(port='COM10', baudrate=9600, timeout=1, parity='N', stopbits=1, bytesize=8)
 client.connect()
#  call client.write_coils  returns always exception
 print("response of write coils api:", client.write_coils(address=0, values=[True] * 10, slave=14))
#  call client.write_register works with out problem.
 print("response of write register api:", client.write_registers(address=100, values=[456, 789], slave=14))

pycharm run window show log:
response of write coils api: Exception Response(143, 15, IllegalAddress)
response of write register api: WriteMultipleRegisterResponse (100,2)

[janiversen]

I think this is solved on dev, but I will check.

[janiversen]

Works with current dev.

[andyhebiao]

thanks a lot :-) @janiversen