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thingsboard / thingsboard-gateway

Open-source IoT Gateway - integrates devices connected to legacy and third-party systems with ThingsBoard IoT Platform using Modbus, CAN bus, BACnet, BLE, OPC-UA, MQTT, ODBC and REST protocols
https://thingsboard.io/docs/iot-gateway/what-is-iot-gateway/
Apache License 2.0
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[HELP] #587

Closed 232485 closed 2 years ago

232485 commented 3 years ago

Describe the issue

There is no provision for Flow control using GPIO in Modbus Serial connector. I think it is necessary to have this option. Is there a workaround ?

**Connector name : modbus_serial

Versions (please complete the following information):

232485 commented 3 years ago

I have used a USB485 Converter with automatic flow control and it solves my problem for the moment. But it would be nicer to have that control in the Modbus Connector code so that the native UART port can be used without the hassle of accidental disconnects caused by external USB485 Converter devices.

imbeacon commented 3 years ago

Hi @kxiopl ,

Thank you for your request, we will investingate how to improve the Modbus connector with this functionality.

samson0v commented 3 years ago

Hi @kxiopl, can you, please, provide more info about your problem and how to reproduce it. Because our investigation didn't find any problem with device connectivity (including tests with disconnected/connected/combine of a two-state device).

Thanks for your interest in ThingsBoard IoT Gateway.