Modbus RTU Master tests with Arduino via RS232 and PLC Panasonic FPX C14R

This time I have communicated the Arduino with Panasonic PLC and I checked the Arduino useful in the industrial field direfencia of the previous tutorials I've tested both devices communicating via RS - 232.

Summary
1. The arduino send via modbus ADC value 0 to Holding Register 0 and the plc into a strategy compared as follows Arduino
If ADC> 500
 relay output PLC = 1
else
PLC relay output = 0
2. The PLC send the value 2 of its potentiometers from 0 to 1000 and displayed on the display arduino Oled, the respective values

PLC FPX C14R Panasonic

Programmable Logic Controller used in industrial in this case the family FPX panasonic (Aromat - Nais)
This PLC has Modbus RTU protocol as master and slave To configure a teacher must create a strategy, if set as slave does not require code as the default plc is a slave and records are automatically routed.

DT0 = Holding Register [0]
DT1 = Holding Register [1]

The control strategy of these PLC is done in the FPWIN Pro software:

Serial Ports settings

Implemented strategy

Arduino code
The arduino is configured as RTU Master to read and write 10 - 10 Holding Registers

Part 1 Arduino Modbus RTU Master

Part 2 Arduino RS232 Modbus RTU Master

Video Final Test With Panasonic PLC

Github Code ARDUINO
https://github.com/JhonControl/Arduino_Modbus_Master_in_5_minutes 

Instructables

http://www.instructables.com/id/Arduino-Modbus-Master-RTU-and-PLC-Panasonic-FPX-C1