This will be of interest to those wanting to do some form of GUI to display / control controller data. Understand it is free for non commercial applications.
Regards
To add to my previous post - after installing the package look in the folder DateSheets and you will see each of the products intended to be used with the product including the comms protocol that will need to reproduced on the Arduino. e.g. wtdin-m.pdf which describes a Digital Input Modules.
Remember for private use no licence is required, I've had this verified some time back in an email from the author Terry Weeder..
Regards