comm4 Protocol Trane Devices

[kcrabill]

Hello all,

I am looking for good documents on understanding the comm4 protocol used by trane controllers. Doesn't seem to be much online about comm4. I am creating a driver for the jaces to communicate to trane controllers. I am reading the serial data that is coming from the controllers and am able to republicate half of it. I will be working on UCP2, VAV's, Intellepacks, UPCM's, Voyagers and Tuc devices.

e.g. read command packet for UPCM1
55FF802B0005A5010600C0D5B0

my message so far
55FF802B005
55FF80 --> start of all messages
2B --> address of device
005 --> read message function code i believe

Kevin Crabill

[amigo]

I imagine the inner workings of a proprietry protocol like comm4 would be a highly guarded secret by Trane.

I am pretty sure you won't find anything online.

Does Trane know that you are attempting this? I don't think they would be happy since it would make their BCUs pretty well obsolete.

On the other hand , I could be wrong, they might openly share everything on the gravy train with you.

[kcrabill]

Thanks for replying. They actually hired us to do it but am waiting forever to get more infomation about it. I didn't know if it was a trane protocol or something they just use for their devices. They will end up owning it and distributing it. I will meet them again in about a week, out of state trip but I guess I can test other things in the short term.

[amigo]

as far as I know its their (trane's) own protocol.

It is an interesting move on their part to get you to write a tridium driver.

Can you share more inforamtion about yourself:
company name?
website?

I may be interested in services your company offers.

[tlp261]

It probably doesn't matter since Trane will own the driver and may not sell it to other control companies, but just curious if you are writing in R2 or AX?

[kcrabill]

It will be in AX, java programming

[kcrabill]

company is cochrane supply, in Michigan, CochraneSupply.com. mostly a supplier but we do traning classes and and a little IT work, also working on a vulcain app that auto discovers all the vulcain devices on a job site and then creates graphics for the user. That project is about 90 percent done but switched over to this new one recently.