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Posts posted by bjarni

  1. Hello, I'm wondering if my problem is a software one or hardware?  And what kind of issues could be causing it in each case.

    The system is alright when at rest, but when put to work (triggered  with input) it works fine for maybe 10-20 seconds and then I get a "CPU in stop mode" message on the screen" and few second later a message about CPU error.

    I've removed the CPU unit and put it back on, but with no luck.   

    Does anyone have some hint for me?








  2. Hello, I would like to push and retrieve data to and from the the internet directly from my Unistream. 

    I tried to connect to a server  on Amazon, a working database (MSSQL) we are using in another project.  But when doing a simple query I get error:

    "20009 Unable to connect to data source  Unable to connect: Adaptive server is unavailable or does not exists"


    Anyone here who could give me a hint on what I need to do?

    The Database is set up as "SQL Server" with IP-number and instance name,  database name, user name and password.

    Another question is if I can use other kind of web services to handle my data ?


    Bjarni Gudmundsson




  3. 18 hours ago, ORSO2001 said:

    you are calling the same function twice...I think that, in this case, the Frequecncy.Frequency1ms is consider as a static variable in this function...then its status will be propagted in the other calls after the first call...

    if you try the same but with two different function (UDFB) its will works...

    Yes, I know now :) - but it would be awkward to write the same function twice - just to catch this event.   Instead I made an global event or bit which is ON for one scan through the whole by putting this in the beginning in my Main:  

  4. Hello, I'm considering what is the scope of the Positive Transition Event in the program.  I thought it was supposed to stay on for one pass to the whole - but maybe that's not correct?

    In this example I'm catching the 100ms frequency and I'm checking it in a function which I call twice with different parameters - but the event only stays on in the first call to the function:


    and in this case the TestFunc is only: 


    (N is the "Out" parameter)

    Is this as it is supposed to be?


    Thanks, Bjarni 




  5. Hello,
    I ran into problem where I had a screen with two instances of the same Custom control (see picture).


    Parameter to the control on left is TestFlag1 and on the right it's TestFlag2.  Accordingly THe light on left shows TestFlag1 ad the other is TestFlag2.

    When a button is pressed, a message box pops up and when OK is pressed there the value of the parameter (TestFlag 1-2) is toggled.  Problem is that it doesn't matter which button I press, there is only the value of TestFlag2 which gets toggled (i.e. light on right toggles no matter which button I press)

    If I skip the message box and do the toggle directly in the button press, the correct flags are always toggled.  Am I missing the correct way to do this or is it just something I have to work around ?


    Thanks,  Bjarni

  6. Hello, I've been trying to load a string from a c-function - without luck.  Made few approaches though.

    One example here:


    char arr[3][32] =
    { "String 1",
      "String 2",
      "String 3"

    // User code ends above this comment
    static void getString(unsigned short Index, volatile char* TheString, int TheStringLen)
        // User code starts below this comment
               TheString =arr[Index]; 
        // User code ends above this comment


    TheString defined as here: 



    Is there a way to do it?

    Thanks, Bjarni

  7. Hello,
    I'm trying to poll some values from Laumas weight transmitter - and I'm kind of stuck.  I've tried to read some addresses according to the Laumas manual, but the power-up value in the receiving variable is never overwritten.   I get modbus status as -11, which I don't know what means.

    THe  setup:


    It should be reading all the time if set up as periodic and the active bit is set ?

    The values when running:



    Anybody with any hints for me?
    Thanks, Bjarni

  8. 27 minutes ago, Ausman said:

    I thought the D16A3 could already do what you want.  Quote from Install Guide:

    <<<<  Inputs 4 and 6 can function as high-speed counters, frequency measurers, or general purpose digital inputs (set in software).   Inputs 5 and 7 can function either as counter reset inputs or general purpose digital inputs (set in software).   >>>>

    If you are wanting to keep up with this read in "real time", you might run into issues due to the delays using the EX-RC1 via a bus.

    cheers, Aus

    Yes, but encoder isn't just a counter.  I need to stop/start motor at different positions at predetermined but variable degrees and I believe that I read somewhere  (maybe these forums) that fast counter isn't enough. 

  9. Hello, I have an Unistream panel and EX-RC1+ D16A3-RO16 + LC3 units hooked to it via CAN bus.  I have to read position from an encoder (with A, B and Zero inputs) and wonder if someone here would give me an suggestion regarding hardware for the job?   Should I just add an IO unit (and which one) or could I replace the D16A3 unit with another which also supports  encoder readings?


    Thanks, Bjarni

  10. Hello again - as said earlier I'm starting up a project with Unistream hooked to an Ex-Rc1 and D16-A3  

    Thanks to you guys, I've managed to go through the config procedure as described in the training procedure:

    • Configure Ex-Rc1  and the IO unit in Visilogic and export the config to Unilogic
    • Read it by Unilogic and export the in/out files to Visilogic and download it to the Ex-Rc1
    • Verify that can ID on Unistream is 1 and 2 on the Ex-rc1 (dip on 2 also) .  Baudrate 1Mb on both
    • Test the D16-A3 IO from Visilogic - could both see input signals and set output from Visilogic
    • In Unilogic I can see the image of the IO modules and their IO, but if I try to watch an input or set an output - nothing happens on the IO hardware???

    Do I need to do something more than the configs, like some CAN send/receive in ladder?   Can I see somewhere if the CAN is operating as supposed?


    Thanks,  Bjarni






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