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EPROM...EEPROM question

Discussion in 'Electronic Basics' started by Bart, Jan 14, 2006.

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  1. Bart

    Bart Guest

    I have a controller that can control a servo motor amplifier. I can load
    programs to it thru RS232 and run them but if I turn the controller off the
    program disappears. The controller has a "Burn" command that will save the
    program to an internal eprom chip and then if I turn off the controller and
    then back on, the program is still there. My problem is I can't download
    from the controller to my laptop so any programs I've loaded and run, and
    edited and run some more, and edited till the program runs perfect....I
    can't make a backup copy of it. I've opened the controller and there's no
    battery inside, so could I remove the eprom from the controller and put it
    in my eprom burner and download the file directly from the chip? And then if
    I put the chip back in the controller the program will still be there to
    run? Sorry I don't have the numbers off the chip 'cause I'm at home dwelling
    on this problem.
    Any advice is appreciated,
  2. John Fields

    John Fields Guest

  3. Bart

    Bart Guest

    Hi John and thanks for your reply.
    The controller has editing capabilities and the program that comes out
    of the office is edited quite a bit in the controller till it performs
    on the shop floor. The final "proven" program is sometimes quite different
    than the original from the laptop. We've tried having the setup fellas
    there edits but we end up with illegible notes on several scrap pieces of
    The setup time is extensive and when a certain job is run again 3 months
    the setup guys take the original laptop program and "re-invent the wheel" so
    speak. It would only take an hour to open the control and pull the chip and
    it in the eprom burner in the lab and download it. It takes till noon for
    setup guys to edit the original program out on the floor.
  4. John Fields

    John Fields Guest

    Ah, I get it. :)

    Your "remove and read" scheme should work perfectly.

    It might even be worthwhile reading the chip immediately after the
    editing is done on the floor, no?

    That way, you'll have the file no matter what happens to the
  5. Jasen Betts

    Jasen Betts Guest

    if the controller has editing facilities can't they be used to get a dump
    of the contents of the memory?

  6. Bart

    Bart Guest

    Hi Jasen,
    Unfortunately, no. The edit feature has no commands for a dump.
  7. Jasen Betts

    Jasen Betts Guest

    so they have to edit the program without seeing what they're editing?

  8. Rich Grise

    Rich Grise Guest

    I concur wholeheartedly with this, plus, maybe have some of the setup
    guys brief somebody on what they've done - maybe a company edict or
    company-provided shop logs or something...

  9. Rich Grise

    Rich Grise Guest

    It probably displays some codes on its own display, but doesn't have
    a "send the codes back up the data line" command.

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