Home forums Using CanvasJS chart from values from iframe

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This topic contains 1 reply, has 2 voices, and was last updated by  Indranil Deo 3 weeks, 4 days ago.

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  • #16092

    123fox
    Member

    I’m working on a project using a PLC controller that is monitoring a process. I have a HTML page now that refreshes itself and shows values of registers.

    I am using: <iframe src=”readreg.htm;reg-R1;fmt-INT;rfs-5″>
    </iframe>
    The code above reads the value of register R1 from controller’s inner page readreg.htm, which I can’t see and enter (it’s hide somewhere). Iframe returns a value(number) but of course in frame. Iframe works fine.

    I want to get the value from iframe (number from register) and put it into variable so I can create a chart.

    I can’t use php, only javascript.
    I’ve tried to do it for weeks but every solution doesn’t work. Hope you can help me.

    #16108

    Indranil Deo
    Member

    @123fox

    Unless we look into your code, we can’t predict what to suggest for your project. Can you kindly create a sample project and share your code, so that we can look into it and help you out. Also this relevant topic from stack-overflow might help you.

    ——
    Indranil Deo
    Team CanvasJS

    • This reply was modified 3 weeks, 4 days ago by  Sanjoy.
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