Hello!
I am new to a MODBUS. I want to communicate with sensor via arduino.
I have a sensor with rs485 interface and MODBUS RTU protocol(http://sstsensing.com/Products/Gas-Sensors/Oxygen-Sensors/LuminOx-Evaluation-Interface/189)
i have rs485 shield(RS485 Shield - DEV-11959 - SparkFun Electronics) and arduino Duemilanove
How can I read register with address 0x7533 ?
Thank You
Vova
Hi
I think you should start by getting the modbus master library for Arduino. This is one of the most widely used:
Than take a look at the examples of the library. You have to use the function 4 of the modbus libray (i.e., Read Input Registers) in order to read the register 7533.
Hope this helps
Elle
Hello Elle,
Have you found a solution for your question?
For myself I have currently the same question an I ask me what is the right Lib to use Master or Slave?
If you have a solution can you describe or provide them here?
Thank you for your answer