I see there is a somfy RTS driver but have not found any documentation on it.  Can someone point me to info on this driver, or more specifically the command structure?
It was written by someone who isn't around anymore, and I never got any documentation for it, so it's not been documented. Do you have one of these devices? If so, hook it up and see what fields show up. We can probably figure out how it works.
Thanks Dean.  I did get this working shortly after your response.  The cable I was using had an issue.
If you just want to move off the Elk, why not just one of the little PLCs that other folks use. That would be way more reliable than Z-Wave.