wudehua2016
commented
3 years ago yes, I got this problem, too. Maybe it is a bug?
Closed leeweizhang1006 closed 3 years ago
wudehua2016
commented
3 years ago yes, I got this problem, too. Maybe it is a bug?
imbeacon
commented
3 years ago Hello, everybody.
Thank you for your interest in ThingsBoard IoT gateway. It looks like an error with device - it sent response with 5 bytes, but the Modbus library expects at least 8 bytes. Also it looks like you have an issue with your configuration, because we don't have "boolean" as a type. You can read more here. I hope it will be helpful. Also I apologize for long-term answer, we have a lot of different tasks in the general ThingsBoard. If you will still get an error - please open the new issue.
Describe the issue
Basically I want to use thingsboard and thingsboard gateway to control my relay module and show the result in thingsboard. I have try to use thingsboard with my own python file to control the relay module using tcp/ip protocol, all perfect and working fine. But when i use thingsboard gateway there is several error. I have follow this link to download thingsboard and thingsboard gateway on my raspberry pi running ubuntu lts 20.4 https://thingsboard.io/docs/iot-gateway/install/deb-installation/ https://thingsboard.io/docs/user-guide/install/rpi/ After that I go to edit my tb_gateway.yaml and modbus.json file which I will attach on below
After I edit the both file I get some error message I will also include in below, other then that the attribute and rpc that I configure in modbus.json also didn't show in device details.
Configuration
----tb_gateway.yaml-----
thingsboard: host: 192.168.1.xxx port: 1883 remoteShell: false remoteConfiguration: false security: accessToken: xxxxxxxxxxx qos: 1 storage: type: memory read_records_count: 100 max_records_count: 10000 connectors: - name: MQTT Broker Connector type: mqtt configuration: mqtt.json
- name: Modbus Connector type: modbus configuration: modbus.json
-----modbus.json------------
{ "server": { "type": "tcp", "host": 192.168.1.116", "port": 1234, "timeout": 35, "method": "socket", "byteOrder": "BIG", "devices": [ { "unitId": 1, "deviceName": "RelayDemo" "attributesPollPeriod": 5000, "timeseriesPollPeriod": 5000, "sendDataOnlyOnChange": false, "attributes": [ { "tag": "Relay", "type": "boolean", "functionCode": 1, "objectCount": 1, "address": 0, } ], "rpc": [ { "tag": "setValue", "type": "boolean", "functionCode": 15, "objectCount": 1, "address": 0, } ],
Connector name (If you need help with some connector/converter): [e.g. MQTT Connector]
Error traceback (If it was raised): When I was running systemctl status thingsboard-gateway.service, I get the error below Dec 29 02:39:32 ubuntu python3[17234]: self.client.framer.processIncomingPacket(response, Dec 29 02:39:32 ubuntu python3[17234]: File "/var/lib/thingsboard_gateway/.local/lib/python3.8/site-packages/pymodbus/framer.py", line 165, in processIncomingPacket Dec 29 02:39:32 ubuntu python3[17234]: self._process(callback, error=True) Dec 29 02:39:32 ubuntu python3[17234]: File "/var/lib/thingsboard_gateway/.local/lib/python3.8/site-packages/pymodbus/framer.py", line 175, in _process Dec 29 02:39:32 ubuntu python3[17234]: raise ModbusIOException("Unable to decode request") Dec 29 02:39:32 ubuntu python3[17234]: pymodbus.exceptions.ModbusIOEcception: Modbus Error: [Input/Output] Unable to decode request Dec 29 02:39:32 ubuntu python3[17234]: '''2020-12-29 02:39:32;; -ERROR - [bytes_modbus_uplink_converter.py] - bytes _modbus_uplink_conberter - 82 - Modbus Error: [Input/Output] Modbus Error: [Invalid Message] Incomplete message received, expected at least 8 bytes (5 received)" Dec 29 02:39:32 ubuntu python3[17234]: NoneType: None Dec 29 02:39:32 ubuntu python3[17234]: '''2020-12-29 02:39:32;; -ERROR - [bytes_modbus_uplink_converter.py] - bytes _modbus_uplink_conberter - 82 - Modbus Error: [Input/Output] Unable to decode request" Dec 29 02:39:32 ubuntu python3[17234]: NoneType: None
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