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  1. #53
    Join Date
    Jan 2005
    Location
    USA
    Posts
    1,449
    Quote Originally Posted by digo View Post
    Back to skwsproul's post in response to Dowadudda - "how often do you guys run into a situation where one can not get the two different devices integrated?"
    In this case, a programmable controller has to take care of the logic for commanding the hw VAVs to the desired mode. The Trane unit won't do it, so in this case most likely an XL50 or 500 would be in place at the middle to achieve the translation.
    Yep that would be one way to integrate. Though a jace would be better as someone else already stated.

    A way to think of that for those learning here about integrating 2 different types or brands of controllers.
    Its kinda like a Mac talking to a PC via an internet connection, the browser (or the plugins attached to the browser ie Java) becomes the interpreter between the 2. Probably not the best analogy but it should help
    "It's always controls"

  2. #54
    Join Date
    Apr 2007
    Location
    San Diego, CA
    Posts
    1,327
    Quote Originally Posted by xarralu View Post
    HA HA HA HA!!! You thought you had me!!! (Thanks DIGO) Just a little over 80 companies.
    To be fair, the question was: Does any other bacnet manufacturer use ARCNET other than ALC?

    of the 82 listed, if you narrow it down to Building Automation/hvac controls, the list gets shorter:
    andover
    automated logic
    cimetrics
    johnson controls
    teletrol systems
    Trane

    however, if you look at the list from the wayback archive(1997), it is almost the same - except automated logic was not listed then - late adopter?
    http://web.archive.org/web/199706090...om/example.htm

  3. #55
    Join Date
    May 2002
    Posts
    9,564
    Even those left is simply a formality because tell me who is integrating bacnet multi-vendor across ARCNET? However, I can understand why ALC wants to use it. It is deterministic. So, when you have Mr. unreliable MSTP by comparison I can see why you want the ARCNET... if you aren't using a a more modern and robust field bus.

  4. #56
    Join Date
    Dec 2005
    Location
    California
    Posts
    305
    Isn't Bacnet MS/TP 76.8 the most common format? Sysint?

  5. #57
    Join Date
    May 2002
    Posts
    9,564
    I think maybe bacnet/IP is most common now. Do you really achieve 76.8 or is this simply a max setting?

    History: My question was specific to the ALC lineup and why they use ARCNET. Xarulu wanted to suggest that LON had a single chip maker (Echelon) FALSE and wanted to suggest this was more proprietary than his ALC lineup, which is why I brought up ARCNET because even the bacnet guys complain about this... (see previous)

    Anyway, I understand why ALC would want to use it over MSTP. It would be more reliable.

  6. #58
    Join Date
    Nov 2006
    Location
    Mirabel, QC, Canada
    Posts
    88
    Quote Originally Posted by xarralu View Post
    My thing is SYSINT, you are right about ALC with LON behind in the times. They are now in beta with a LON portal that is supposed to be better than the SLTA-10 rig.
    Is this the same one that they were working on back in april 2002? If so, after 6 years, I am sure that they had ample time to take all the bugs out. It should be reliable and fast.
    -------------------------
    CO2 Racks Rock !

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