Modbus to Johnson N-31 - Page 2
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  1. #14
    Quote Originally Posted by kevin stone View Post
    Just a note
    The Modbus async driver is avaliable on the fx40 you can purchase it from Johnson.
    I have 4 of them running on differnt sites, the driver runs cuncurrently with lon and N2 the modbus goes on the 232 port and then to a b&b rs4859tb then off it goes with no 50ft limit
    thanks
    Kevin
    Well there ya go Cleancondenser. Put in a FX-40 and you have a first class webbased solution. with lon, and bacnet ability in reserve if you ever need them in the future.

  2. #15
    Join Date
    Jun 2003
    Location
    Philly, PA
    Posts
    42
    Quote Originally Posted by freddy-b View Post
    Well there ya go Cleancondenser. Put in a FX-40 and you have a first class webbased solution. with lon, and bacnet ability in reserve if you ever need them in the future.
    Told ya so :-)

  3. #16
    Quote Originally Posted by joscon View Post
    Told ya so :-)
    Yep, about the license. But the bacnet idea.........naaaa,,

  4. #17
    Join Date
    Jun 2003
    Location
    Philly, PA
    Posts
    42
    Quote Originally Posted by freddy-b View Post
    Yep, about the license. But the bacnet idea.........naaaa,,
    OK ya got me there, I forgot about the B&B 232 to 485 converter. Don't know how, I've got about 6 of them.

    Good debate though, keeps ya thinking.

  5. #18
    Quote Originally Posted by joscon View Post
    OK ya got me there, I forgot about the B&B 232 to 485 converter. Don't know how, I've got about 6 of them.

    Good debate though, keeps ya thinking.
    I hear that.
    Last edited by freddy-b; 01-13-2008 at 11:24 PM.

  6. #19
    Join Date
    Jun 2007
    Location
    Scranton, PA 18509
    Posts
    55
    Quote Originally Posted by joscon View Post
    I'd need to read the license to say with absolute certainty, but to the best of my knowledge, the only difference between the JCI Branded JACE 403 and a Vykon or Webs license is the 100 device limit.

    I've even connected to a FX40 with Vykon & Webs Workbenches. you just need to have 3 JCI .JAR files installed.

    If you have a copy of a license handy, could you post it?
    FYI, Here is a license from a FX40...
    Attached Files Attached Files

  7. #20
    Join Date
    Jun 2007
    Location
    Scranton, PA 18509
    Posts
    55
    Quote Originally Posted by cleancondenser View Post
    There is no user work station
    The N2 only has six devices on it
    I did not see any Modbus info.

    .............
    Thank you
    From my experiene w/ PLC controllers, you usually have to know quite a bit about the programming. This is b/c in the "RUNGS" you usually have to create coils and holding registers to view the values over Modbus. Modbus is pretty easy to work w/ if you have a points list w/ the holding register ###s. But if you don't know what they are it can be real difficult to figure out for newbies.

    You mentioned that there is already a modbus to bacnet converter. Is the converter IP or MSTP? I use a program for monitoring/dignostics from a company called cimetrics. They specialize in Bacnet protocols...

    Here is a link:http://www.cimetrics.com/products/products.php?cat=5

    The program is cheap and is called Bacnet Explorer XML. It is very easily to use and there tech support is great. If the customer isn't looking for a "front-end" this is a "down and dirty" way to monitor the BACnet points in the system.

    Thankx
    Jamie

  8. #21
    Join Date
    Jul 2002
    Location
    NorthEast
    Posts
    811
    Panasonic supplys a downloadable configuration tool
    called FP Win Pro

    The program is very easy to use.and connecting to the controller is fairly simple.
    I am able to view both the code and the ladder diagram


    There are over three hundred rungs but
    I was able to identify the important relays, timers and registers.

    I was even able to override them on and off.
    This program is simple but is very proprietary

    This may be easier than it sounds ,however I will purchase an FX-40
    and connect it to the Modbus Bacnet converter and hopefully things wil be more apparent.

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