I see the integration kit and specs for this module have been released. Not much use to us as is, because it is indeed read only. I need to adjust setpoints and heating/cooling mode on VAV and air handler controllers. I've gotten some indication that the limitation is in the firmware of the module, and that it has the hardware to transmit. Any more information available on this? As long as I can get the module to transmit, I can expand the integration kit to meet my needs.
We can do everything we need to over ethernet to these devices, which we are doing now, but canbus has the advantage of not needing switches and the associated a/c power for those switches, which can be very hard to retrofit in an existing facility, and makes it difficult to be cost competitive. We would generally be able to reuse the existing signalling wire. We are currently looking at retrofitting 80+ sites, each of which would need a varying number of canbus modules depending on how many units each proves able to support, so hopefully it is worth the time to continue to develop the firmware for this module.