Why is the read_coils return value not a ReadCoilsResponse object?

[lui305]

Versions

• Python:3.9.13
• OS:windows
• Pymodbus:3.2.2

Pymodbus Specific

• Server: tcp
• Client: tcp

Description

Hi!
When I am alone read_coils function, the return value for “ReadDiscreteInputsResponse (24)”, when I use write_coil functions first, then use read_coils function, Its return value changes to “WriteCoilResponse(100) => True”. Shouldn't the return value of the read_coils function be the ReadCoilsResponse object?

Code and Logs

code one:
###################
from pymodbus.client import ModbusTcpClient
# 连接到Modbus服务器
client = ModbusTcpClient('169.254.94.2', port=502)
client.connect()
# client.write_coil(100,True,1)
a=client.read_coils(100,1)
print(a)
# close the connection
client.close()
#################
print (a) is " ReadDiscreteInputsResponse (24)"
#################

code two:
###################
from pymodbus.client import ModbusTcpClient
# 连接到Modbus服务器
client = ModbusTcpClient('169.254.94.2', port=502)
client.connect()
client.write_coil(100,True,1)
a=client.read_coils(100,1)
print(a)
# close the connection
client.close()
#################
print (a) is " WriteCoilResponse(100) => True"
#################

[janiversen]

I am not sure what problem you have, but pymodbus works as expected, please see the example I added.