Maintenance Reminder - Interpreting $MR_HIST variables

    Hello everyone,

    Hope you are doing fine.

    I would like to get the maintenance reminder status and send it across to a HMI. I know that it is possible to set a DO to prompt it. However, I would like to automate this process and I am unable to set this DO through a system variable. Could someone help me in interpreting the system variables $MR_HIST? Maybe using the $DONE_DATE, $DUE_DATE, $DONE and $RECORDED, would it work?

    Thanks and Regards

    Anand

    If I'm not entirely mistaken (which is certainly possible) the $MR_HIST[x]
    system variable only contains a list of maintenance that either has been performed, or are overdue.
    Seemingly $MR_HIST also only has 10 indexes, yet it is possible to have more than 10 maintenance reminders defined. It seems to me that MR_HIST isn't entirely comparable to the actual matinenance reminders as found in Menu->Status->reminder.

    For instance I've yet to see upcoming maintenance be displayed in MR_HIST. as such I'm not sure it is possible to use MR_HIST to notify a user of upcoming maintenance.


    I've tried searching through all system variables on a fanuc controller (automatically) for the string contents of upcoming maintenance not found in the MR_HIST but visible in 'Maintenance reminder in' Menu->Status->reminder.
    Example: 'Overhaul check'
    in 55.1 mo.

    and I couldn't find any system variable containing such information

    Unlike performed or overdue maintenance for example:
    '1st mechanical check'
    in -422.4 day
    or running 952.7 h

    which shows up in system variables/MR_HIST as:
    Field: $MR_HIST[2].$GROUP Access: RO: BYTE = 1
    Field: $MR_HIST[2].$ID Access: RO: BYTE = 2
    Field: $MR_HIST[2].$TYPE Access: RO: BYTE = 2
    Field: $MR_HIST[2].$DUE_TYPE Access: RO: BYTE = 1
    Field: $MR_HIST[2].$NAME Access: RO: STRING[37] = '1st mechanical check'
    Field: $MR_HIST[2].$DUE_ACT Access: RO: INTEGER = 28424197
    Field: $MR_HIST[2].$DUE_DATE Access: RO: REAL = -9.574667e+02
    Field: $MR_HIST[2].$WARN_DATE Access: RO: INTEGER = 1478952151
    Field: $MR_HIST[2].$DONE Access: RO: BOOLEAN = FALSE
    Field: $MR_HIST[2].$DONE_DATE Access: RO: INTEGER = 0
    Field: $MR_HIST[2].$DONE_PAST Access: RO: STRING[21] = ' -957.5 hours RUN'
    Field: $MR_HIST[2].$RECORDED Access: RO: BOOLEAN = FALSE

    Edited 4 times, last by gtafbi (March 18, 2025 at 3:11 PM).

    Replying for the update..

    Edit: Seems no update.

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