Master Modbus RTU Protocol on Arduino

We have not considered to carry out tests of industrial protocols taking as base the protocol Modbus RTU (Binary) through RS232

In this case if you have a device such as meter, controller, PLC, HMI, SCADA and requires monitoring and control we recommend the following tutorial

Website : http://trialcommand.com/

Tutorial en ESPAÑOL: Arduino Maestro Modbus RTU (RS232)

Tutorial in ENGLISH: Arduino Master Modbus RTU (RS232)

Arduino Mega 2560 Master Modbus RTU (RS232) - TrialCommand.com

We will use an additional Max232 chip to convert the modbus protocol of ttl voltages to 5v to RS232, although this converter is sold normally we have decided to assemble it (MAX232 DIY) in order not to lose the tradition of making PCB ships.

Since it is intended that industrial integrations be performed the arduino will communicate with a modbus simulator via RS232, in this case we use an Arduino Mega 2560 which has more serial ports, we have made a number of modifications to the modbus slave library so our Arduino can be programmed by the main Serial port And the Serial1 is only modbus this in order to facilitate the programming that case to make modification and / or corrections.

More Info: Website : http://trialcommand.com/

Tutorial en ESPAÑOL: Arduino Maestro Modbus RTU (RS232)

Tutorial in ENGLISH: Arduino Master Modbus RTU (RS232)

More test Youtube Channel : Trialcommand