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IndustryArena Forum > Machine Controllers Software and Solutions > Fanuc > Tool Offset and Work Offset Locking on Fanuc OiMD
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  1. #1
    Join Date
    May 2008
    Posts
    157

    Tool Offset and Work Offset Locking on Fanuc OiMD

    We have a few VMC's with Fanuc OiMD controllers. I want to lock the tool offset table and Work offset tables in production runs once the first part is proved so that the operator does not fiddle with the offsets. I dont want to switch off the edit key for this purpose as there will be requirement of program editing.

    Is there any way to do this by updating some parameter on the machine using G10 L52 command OR something on these lines ?

    Thanks a lot in advance

  2. #2
    Join Date
    Feb 2006
    Posts
    1792

    Re: Tool Offset and Work Offset Locking on Fanuc OiMD

    I am not sure, but I believe it is not possible to lock these with some parameter or system variable.

  3. #3
    Join Date
    May 2008
    Posts
    157

    Re: Tool Offset and Work Offset Locking on Fanuc OiMD

    Here is some Info I was able to dig out :
    DISABLE TOOL OFFSET MANUAL ENTRY
    #3290
    BIT 1 : OFFSET ENTRY DISABLE
    BIT 0 : WEAR ENTRY DISABLE

    #3294 : START TOOL NUMBER TO DISABLE
    #3295 : LAST TOOL NUMBER TO DISABLE IN THE RANGE STARTING FROM #3294

    Nothing yet on work offset.

  4. #4
    Join Date
    Feb 2006
    Posts
    1792

    Re: Tool Offset and Work Offset Locking on Fanuc OiMD

    Try 3290#3 = 1

  5. #5
    Join Date
    May 2008
    Posts
    157

    Re: Tool Offset and Work Offset Locking on Fanuc OiMD

    This one works to lock all the work offsets. Thanks

    My plan was to selectively lock the work offsets like in the case of tool offsets ie. I want to lock from G54 to G57 and keep G58 and G59 open. I think this is not possible going by what I could gather from the parameter manual for #3290.

  6. #6
    Join Date
    Feb 2006
    Posts
    1792

    Re: Tool Offset and Work Offset Locking on Fanuc OiMD

    Locking geometry/wear offset numbers in a range is possible, but work offsets cannot be selectively locked.

  7. #7

    Re: Tool Offset and Work Offset Locking on Fanuc OiMD

    You are correct and you can use G10 L52 to "lock" your G54 thru G57
    G10 L52 ; Parameter entry mode
    N1221 R123.456 ; G54 setting
    N1222 R123.456 ; G55 setting
    N1223 R123.456 ; G56 setting
    N1224 R123.456 ; G57 setting
    G11 ; Cancel parameter entry mode

    Parameters:
    1221 G54
    1222 G55
    1223 G56
    1224 G57
    1225 G58
    1226 G59

  8. #8
    Join Date
    Feb 2006
    Posts
    1792

    Re: Tool Offset and Work Offset Locking on Fanuc OiMD

    That is an intelligent method.
    Find out the values stored in G54 etc and insert the suggested lines in the beginning of the program.
    Any change in work offsets would be overwritten with the original values.

  9. #9
    Join Date
    May 2008
    Posts
    157

    Re: Tool Offset and Work Offset Locking on Fanuc OiMD

    Quote Originally Posted by drdos View Post
    You are correct and you can use G10 L52 to "lock" your G54 thru G57
    G10 L52 ; Parameter entry mode
    N1221 R123.456 ; G54 setting
    N1222 R123.456 ; G55 setting
    N1223 R123.456 ; G56 setting
    N1224 R123.456 ; G57 setting
    G11 ; Cancel parameter entry mode

    Parameters:
    1221 G54
    1222 G55
    1223 G56
    1224 G57
    1225 G58
    1226 G59
    Thanks a Ton drdos That was a very good piece of information.

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