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Omron PLC Help....

Discussion in 'Electrical Engineering' started by Steve-o, Apr 13, 2004.

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  1. Steve-o

    Steve-o Guest

    Hi all;

    I have an Omron C200 processor that is password protected. The programmer
    is long gone and they need to make some changes to the program. There are
    no copies of the program that I can see, only whats in the processor memory.

    Is there a way I can get into these without clearing the memory?

    Thanks in advace;
  2. SQLit

    SQLit Guest

    I do not think so. Better call Omron and ask if there is a back door. A lot
    of manufactures place back doors in just for this reason. Other wise I hope
    you have a printed copy of the program. Or better yet a saved copy on disk
    some where.
  3. Louis Bybee

    Louis Bybee Guest

    If you gain access to the PLC program data make a backup copy before you do
    anything else!

    Many vendors of equipment supplied as a turnkey package will password
    protect the PLC, and not supply the program data. This, in most cases, is a
    vehicle to lock you into acquiring replacement supplies and services from
    them. I believe that placing into the purchase specs. a requirement to use
    the PLC brand (and other devices) that is consistent with others in use at
    your site, and supplying a backup copy of the software used, to be more
    attainable before the purchase contract is signed than after.

    As SQLit intimates, having access to the PLC program is of great value when
    the PLC of a mission critical piece of equipment goes South. It allows the
    return to production in a much more timely fashion. Even if you don't do the
    work in-house having the program data available for the repair tech is a
    time saver.

  4. If you have an IO list (or can make one) hire a programmer to rewrite
    the program, and document it. The cost of the programmer will pay back
    the first time or two it breaks down.

    On a side note, I don't see how these suppliers get away with this. If
    I told a customer that he wasn't getting any access to HIS program, I
    would probably be escorted off the site. As for turn-key stuff, I
    would think any gain you get for the program being private would be
    quickly wiped out by the ill will when the customer built another
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