Do you have the software in an installation already?.
Do you just need the description of operation/config parameters?.
If you need the application files you would need to go through Carel or a distributor.
I have used this application (modified) so can answer a few questions. I also have the description.
"Once men turned their thinking over to machines in the hope that this would set them free. But that only permitted other men with machines to enslave them."
- The Reverend Mother Gaius Helen Mohiam