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IndustryArena Forum > Machine Controllers Software and Solutions > Fanuc > Variable for reference position (G30)
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  1. #1
    Join Date
    Jan 2010
    Posts
    171

    Variable for reference position (G30)

    Anyone know the variable for reference position? parameter 1240
    I wanna modify the toolchange cycle and i want it to feed to the position and not rapid.

  2. #2
    Join Date
    May 2016
    Posts
    526

    Re: Variable for reference position (G30)

    Dependant on the controller and if the tool change macro is available for modifiction if it s its easy to change
    If not you may have to adjust the rapid parameter for the machine

  3. #3
    Join Date
    Feb 2006
    Posts
    1792

    Re: Variable for reference position (G30)

    Why waste time by feed motion to the reference position. If it is lathe, first home X. If a milling machine, first Z. These are safe motions. Can be at rapid rate.

  4. #4
    Join Date
    Jan 2010
    Posts
    171

    Re: Variable for reference position (G30)

    Quote Originally Posted by sinha_nsit View Post
    Why waste time by feed motion to the reference position. If it is lathe, first home X. If a milling machine, first Z. These are safe motions. Can be at rapid rate.
    There is a reason why i wanna feed my machine to secondary reference position, i specified G30 not G28.

  5. #5
    Join Date
    Jan 2010
    Posts
    171

    Re: Variable for reference position (G30)

    Quote Originally Posted by mbservice View Post
    Dependant on the controller and if the tool change macro is available for modifiction if it s its easy to change
    If not you may have to adjust the rapid parameter for the machine
    Tool change macro is available for modifications, i can put all the coordinated inside the macro but there is a parameter which doesn't allow tools to be unclamped/clamped if the machine is not in some of the reference positions, i wanna keep this option ON, i can put the same coordinates inside the problem but i would rather get the directly from parameter 1240.

  6. #6

    Re: Variable for reference position (G30)

    Parameter 1241 is the value for G30, if set to 0 then it will go to the same place as G28.

  7. #7
    Join Date
    Jan 2010
    Posts
    171

    Re: Variable for reference position (G30)

    #100=PRM[1241]/[1] is what i'm after.

  8. #8
    Join Date
    Feb 2006
    Posts
    1792

    Re: Variable for reference position (G30)

    It would work on model D, but not on earlier models where PRM is not defined.

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