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Refer to the rs232 protocol document in http://www.cytech.biz/Downloads/Files/163/rs232.pdf
There are 256 counters in Comfort which can be used as simple registers or as below.
The command C! to the UCM will set the names counter to the assigned vaue and activate a Counter Response which can take the value as a parameter. Hence this is a way of sending commands to Comfort
If Comfort changes a counter, it sends the CT command to the UCM port which can serve to update values in the external device ie Homeseer.
Comfort also has an action SEND RS232 to UCM which can send any data string to the UCM
This is a short summary of what can be done via the UCM communications
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