ESP8266 Modbus TCP Server, Node-RED as Client, Control Relay in Coils and DHT-11 in Holding Register

ESP8266 Modbus Server, and Node-RED as Client, Control Relay in Coils and DHT-11 in Holding Register
Required file: drive.google.c...
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[@shanno88]

super cool

[@yasin_akar]

thanks
yaser ali huseyin

[@Ambulare-Cum-Canem]

Не понятно где прописать ID устройства, тот который идет первым байтом кадра modbus.

[@yuluo735]

nice can I use esp32 instead of 8266 same program?

[@YaserAliHusen]

Yes, You can use ESP32
Download the code

[@karthikvhiremath1886]

Hi Sir,
Is that possible to use without internet connection

[@YaserAliHusen]

No need internet connection,
Just wifi connection in same network

[@karthikvhiremath1886]

@@YaserAliHusen You mean only Wifi router required... Right

[@YaserAliHusen]

@@karthikvhiremath1886 , Yes correct

[@karthikvhiremath1886]

@@YaserAliHusen Thank you so much Sir.....

[@shanno88]

where to download the modbus client X?

[@YaserAliHusen]

You can download here: sourceforge.net/projects/modbusclientx-modbus-tool/

[@shanno88]

THXxxx@@YaserAliHusen

[@pro_rock1910]

how can this be done with wires??

[@YaserAliHusen]

Using ethernet cable?
You can use Arduino with ethernet shield and use ArduinoModbus library

[@pro_rock1910]

I probably didn't express myself correctly. I'm interested in ways to connect ESP32 to SBS with Nodered via wire directly, use the device without a Wi-Fi router. I'm thinking about the possibility of exchanging data via UART, but have not yet tested it in practice...@@YaserAliHusen

[@k.k8221]

Hi, how to get or set port number please?

[@YaserAliHusen]

default port is 502, if you want to change, maybe you can change it in library

[@k.k8221]

My system not detect while using node red / modbus poll, is it need any gateway fr rs485 to tcp