View Full Version : Trane BCU into AX
01-13-2010, 12:46 PM
what is the best way to integrate BCU into AX and get rid of the summit workstation?
Can AX Edit and/or Override the BCU resident schedules, just in case I decide to leave the summit workstation stay?
01-13-2010, 02:13 PM
Best way is to bacnet ip from BCU into the AX that I know of. I have tried it in our office just to see what it takes. From the AX end it is fairly simple. The real trick is on the BCU side. Anything you want to see or change needs to be referenced into an analog or binary input or output point in the BCU. Meaning if you want to know the zone temp of a vav you need to create an analog input for that and reference it to the zone temp on the box. Nothing in BCU is a true bacnet point unless it is set up this way. Keep in mind that you are limited to 250 of each type of point in the BCU. I am not sure about schedules but I might check into that. I am sure some of my fellow Trane guys may have a different opinion but this is what I have been told and found. Now that I am getting the opportunity to do a little AX work I can see where the true differences are. Funny thing is that to go bacnet from the AX to BCU is just as simple on the AX side since all the points are automatically bacnet in the system. The problem is once again they need to be referenced to analog or binary in or out points at the BCU. They can say all they want but the BCU does not appear to be a true bacnet device. It may communicate that way but I would think a true bacnet device automatically converts all data into bacnet like the AX or many other systems do.
01-13-2010, 02:47 PM
yeah, I think the bcu schedules are proprietary format but not 100% sure.
anyway, I have some other alternatives too.
01-13-2010, 03:28 PM
everything posted above is correct. What you have to do as for as the schedules is have a binary point in the BCU and control the point with AX. I have done the integration with AX a lot and it works fine except for the fact that the BCU serves up slow so the polling has to be adjusted, and the BCU isn't native bacnet. I worked for Trane for a long time before moving to Tridium so if I can help you let me know.
03-11-2010, 03:30 PM
I am looking to get all the comm5 LON points up to the BCU and exposed as Bacnet. I have access to Summit Head end and Rover. Could you be of any help with this? Thanks..
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