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  1. #1
    Join Date
    Apr 2009
    Posts
    108

    Fanuc 150M-B stuck on C: prompt

    I’m working on a simulator with a Fanuc 150M-B using the MMC-IV board. I was told that the parameters and possibly the ladder logic are gone. When I try to start the control it goes through the normal startup procedure but hangs on a C: prompt after executing the autoexec file. No alarm LED’s are showing on any of the control boards.

    I used the boot screen and tried loading a standard ladder and clearing the memory using the 7-9 keys. No luck. Re-seating the boards didn’t do any good. Now I’m looking at the MMC directory and wondering if I have some corrupted files. Has anyone ever had this problem before?

  2. #2
    Join Date
    Apr 2009
    Posts
    108

    Fanuc 150M-B stuck on C: prompt

    OK. Found out I was doing something dumb. Didn't press the MMC button. Thanks Bill.

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