unofficial Arduino to Eurotherm 2416

The Project controls an Eurotherm 2416 PID controller by an Arduino Mikrocontroller. The Output of the Arduino can be more easily read than the register based ModBus Output. Modbus Protocol simplification is included in a separate libary that was also built from scratch.

History

The Project was originally developed during a master thesis to be able to communicate digitally with an oven used vor SWNT synthesis. There were also some analog signals read out from different sensors etc. The code here is a standalone version for the PID controller of the oven that will probably be of more general use than the original program. The complete project from the thesis can also be acquired. Please send @ukos-git a message to optain the code.

Installation

Install the ./libraries in your Arduino libraries folder.
open the Arduino application from the ./app directory with your arduino programming app and upload it.
software serial is used in this example to don't interfere with the USB-Port-Communication on PIN 0 and 1.
- You can try to convert the TTL-Signal directly by Software to RS232 but be reminded, that pure RS232 is 12V while the arduino uses 5V for signal high values. There is a commented line in the example app.ino to do this by software.
- better way is a TTL to RS232 conversion with a MAX232 and some capacitors. See the schematics a view lines down.
required is also the appropriate RS232 output hardware module for the Eurotherm 2416. You can stick it by first removing the Controller from the front.

Dependencies

The program uses SofwareSerial which should be included in your Arduino IDE.

simple example

Take a look at the example app.ino in the app folder of the project. It should be self-explanatory.

A minimal example of setting once the temperature to 500°C and after that reading it and outputting it to the serial console is shown below. Start from here to build some more advanced features.

#include <SoftwareSerial.h>
#include <MKModbus.h>
#include <MKTemperature.h>

SoftwareSerial Eurotherm2416(9, 8);           // Init Eurotherm PID Controller on Ports rx,tx,convert the ttl by hardware
MKModbus Modbus(Eurotherm2416);               // Init Modbus Protocol for Eurotherm PID Controller
MKTemperature Temperature(Modbus);            // Init Oven with attached Eurotherm Controller

void setup()
{
  Serial.begin(9600);
  Eurotherm2416.begin(9600);
  Temperature.set(500)
}

void loop()
{
  Serial.print(Temperature.getTemperature());
}

Schematics

schematic for the electronics setup is included in the ./fritzing directory:

License

This Software is distributed under the MIT License.

This is no official Application and was enginered for educational purpose at the University of Wuerzburg, Germany in the group of T. Hertel.

Eurotherm is a trademark of Eurotherm USA 44621 Guilford Drive, Suite 100, Ashburn, Virginia 20147.

zz9abi / arduino-eurotherm2416