Exception Response(132, 4, GatewayNoResponse)

[MGGEL]

Hi,

I get the error Message Exception Response(132, 4, GatewayNoResponse) but i dont understand why.
Maybe someone could give me a hint.

The source code:

from pymodbus.client import ModbusTcpClient
from pymodbus.payload import BinaryPayloadDecoder
from pymodbus.constants import Endian

import logging
logging.basicConfig()
log = logging.getLogger()
log.setLevel(logging.DEBUG)

client = ModbusTcpClient('192.168.188.30',502)

client.connect()

response = client.read_input_registers(7,1)
#response = client.read_holding_registers(7, 1)

if response.isError():
    print("Fehler beim Lesen des Registers:", response)

The debug ouptut:

DEBUG:pymodbus.logging:Connection to Modbus server established. Socket ('192.168.188.129', 57998)
DEBUG:pymodbus.logging:Current transaction state - IDLE
DEBUG:pymodbus.logging:Running transaction 1
DEBUG:pymodbus.logging:SEND: 0x0 0x1 0x0 0x0 0x0 0x6 0x0 0x4 0x0 0x7 0x0 0x1
DEBUG:pymodbus.logging:New Transaction state "SENDING"
DEBUG:pymodbus.logging:Changing transaction state from "SENDING" to "WAITING FOR REPLY"
DEBUG:pymodbus.logging:Changing transaction state from "WAITING FOR REPLY" to "PROCESSING REPLY"
DEBUG:pymodbus.logging:RECV: 0x0 0x1 0x0 0x0 0x0 0x3 0x0 0x84 0xb
DEBUG:pymodbus.logging:Processing: 0x0 0x1 0x0 0x0 0x0 0x3 0x0 0x84 0xb
DEBUG:pymodbus.logging:Factory Response[132]
DEBUG:pymodbus.logging:Adding transaction 1
DEBUG:pymodbus.logging:Getting transaction 1
DEBUG:pymodbus.logging:Changing transaction state from "PROCESSING REPLY" to "TRANSACTION_COMPLETE"
Fehler beim Lesen des Registers: Exception Response(132, 4, GatewayNoResponse)

[janiversen]

The device after your gateway/converter do not respond. A likely problem is that you have a wrong slave address.

[MGGEL]

I've found the solution, I took another slave device and it works.
Seems to me that the on, i've tested with is damaged.