arduino with ethernet Shield to Omron Plc via Modbus Tcp IP ethernet?

[Francisco02 2]

How to send data from an arduino with an ethernet Shield to Omron Plc via Modbus Tcp IP ethernet?

 

[NevergoldMel 38]

can you use node-red?

 

[Ken Roach 194]

In general, Node-Red needs to run on a Linux computer of some sort, and of course the Arudinos are an interpreter running on a microcontroller.

Modbus/TCP and Modbus/RTU are both part of the ordinary Arduino Modbus library.   

https://www.arduino.cc/en/ArduinoModbus/ArduinoModbus

So OP should start there, and ask specific questions in an Arduino forum.

 

Just this week I discovered two really cool ways to splice an Arduino to a higher-level control system.    One is an Uno R3 board with an expansion that lets you mount a FriendlyElect NanoPi Neo Core, running Debian.    Another is that Hilscher makes an industrial ethernet Hat for Arduino, pre-configured as an EtherNet/IP Adapter that talks to the Arduino over I2C.