Honeywell and Trane

[michael26]

I have abuilding that has a complete light commercial hw lon system that consists of vav controllers, a plant controller and a few others. Can't remember all the #s xl10s, xl15c,xl15b maybe. The building was just added on to and zn520s were used on the 3 new pieces of equipment. Can these controllers have occupied/unoccupied points bound over from the honeywell system or can these hold time and do thier own scheduling with rover? If not could they be tied into the same bus and be pulled up anywhere with rover?

[freddy-b]

Yes, and thats the beauty of it.

[roadgear16]

Can't speak for the HW system, but occupancy is a valid point in the 520. You can put it on the same trunk and scan with rover, as long as the zero lenght domain isn't chopped off when the 520 is brought into the HW system. I know some systems (TAC for sure) chop off the ZLD, and you have to use something like NLUtil to reassign the ZL so that rover will find it. Also, you can press the service pin, but who wants to do that.

[michael26]

So I can bind a point from the xl15a to the zn520 with rover. Just search for the point coming from the xl15a that occupies the rest of the building.

[OutOfControlMan]

The XL15A Controller is HWs Supervisory Controller for a LonSpec project "LCBS" If you try to bind any points to this XL15 or any other HW controller that already exists on the HW network you will break the bindings and problably make the LonSpec database useless. LonSpec is not a true LNS Lon system and does not play well with others. Trust me I tried it and screwed it up, I did however have the original Lonspec database and was able to reload the project. I believe you are able to add 3rd party devices to Lonspec but you need the original database from the vendor who installed it. I dont know if the Trane devices will be compatible????

[michael26]

I do have the original database. We installed the original system years ago. So the controllers can definetly be on the same bus but they may or may not be able to communicate? Is this correct?

[chillersandcontrols]

I do have the original database. We installed the original system years ago. So the controllers can definetly be on the same bus but they may or may not be able to communicate? Is this correct?

You guessed it! The XL15B will just list the Trane controllers as unsupported devices on the tree. You will not be able to communicate or command them with Honeywell. Rover maybe....but why not simplify your life and put XL10 VAV controllers on the new equipment? JMHO:rolleyes:
Cheers