IMPORTANT: This library is not longer maintained any more. Please instead of this library install Industrial Shields Arduino IDE boards integration.
How to use the Industrial Shields library in the Arduino IDE: (NOTE: This example also works for any other library you want to charge on the Arduino IDE).
Click on: «Clone or download»
After that download the zip file on your desktop.
2. Add the library on the Arduino IDE.
After choose the arduino-IndustrialShields-master.zip the library have to be charged. To verify if the library is added correctly you can see the library on:
//File-> Examples -> IndustrialShields
3. Now you can open an example to start to programm a PLC.
It is not necessary to use the Industrial Shields library to program the Arduino Based PLCs because of all PLCs use an Original Arduino board inside.