The objective of my project is to read data from an energy meter that uses RS485 MODBUS RTU protocol.I am using Arduino UNO and later I will use CC3200 with Energia.
In the first step I tried to obtain data on ArduinoUno using different MODBUS libraries, but was unable to read any data.The readings are always 0 irrespective of the holding registers I read.I have visited the forum for trying different versions of code but no success was obtained.
Arduino UNO, Rs485 to Rs232 converter.
I am using ModbusRTULibrary.
I am attaching my code below.
Please provide guidance as to how can I read basic data on arduino so that then I can move on to CC3200.
sketch_may04a.ino (2.12 KB)
SimpleModbusMaster.h (5.96 KB)