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Thread: OPC Server ?

  1. Apr 20th, 2001, 11:11 AM #1
    gkwan
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    Question

    I'm trying to learn how to access OPC in VB. OPC stands for OLE for Process Control.

    Can anyone help? I would like to see an example.

    Thanks
    jj
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  2. Aug 27th, 2002, 01:01 PM #2
    TexasFM3
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    Wink

    I know this is real late... but maybe it will help some one

    http://softwaretoolbox.com/isaexpo99

    There is a good power point presentation on this sight that tells how to utilize OPC. The automation standard is also available for free from the OPC foundation

    http://www.opcfoundation.org

    The thing to realize is that OPC is COM based so you might want to learn about COM as well. To learn COM, simply think of it as an ActiveX OCX project. They are related in much the same.

    Hope this helps,

    TexasFM3
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  3. Nov 19th, 2002, 10:40 AM #3
    Simon Caiger
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    I know it's even later

    I implemented an OPC project a couple of years ago.
    It was a fairly big project.

    The links above in the previous post are a good starting point.

    Choice of server is important. I thoroughly recomment the Kepware product.

    Also watch out for the DCOM and security settings. I spent so long getting this to work that I documented it thoroughly once I got it going (screen dumps of all settings pages etc.)

    Any problems give me a shout.

    If you have already finished I'd be interested to hear your more recent experiences with this as I am due to do another OPC project early next year.
    Simon Caiger

    Documentation is like sex; when it's good, it's very, very good, and when it's bad, it's better than nothing.
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  4. Nov 2nd, 2004, 04:13 PM #4
    Dave Sell
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    Originally posted by Simon Caiger
    I know it's even later

    I implemented an OPC project a couple of years ago.
    It was a fairly big project.

    The links above in the previous post are a good starting point.

    Choice of server is important. I thoroughly recomment the Kepware product.

    Also watch out for the DCOM and security settings. I spent so long getting this to work that I documented it thoroughly once I got it going (screen dumps of all settings pages etc.)

    Any problems give me a shout.

    If you have already finished I'd be interested to hear your more recent experiences with this as I am due to do another OPC project early next year.
    Simon, you still browse these forums? I may have some OPC related questions.
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  6. Nov 25th, 2005, 10:42 AM #5
    Dave Sell
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    Re: OPC Server ?

    A year later - I guess not?
    Nobody knows what software they want until after you've delivered what they originally asked for.

    Don't solve problems which don't exist.

    "If I had eight hours to cut down a tree, I'd spend six hours sharpening my axe." --- Abraham Lincoln (1809-1865)

    2 idiots don't make a genius.
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