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  1. #1
    Join Date
    Dec 2020
    Posts
    5

    Enable limits during homing UCCNC UB1

    When homing the signals from the limit switches are not considered.

    Is there a way to enable this?

    Reason is I'm doing a upgrade of an old mill which has +/- limits separate from home switches (located some 1/3rd between limits). If the machine is on "wrong" side of home at start up, it can crash during homing procedure.

    Ideally hitting a lim during homing should make the direction change to reach home signal.

    I could solve this by using the lim as home, but thought I might ask for other solution first. Having home 1/3rd between limits makes homing faster with less transport.

    Im using UCCNC with a UC300eth UB1.

  2. #2
    Join Date
    Jan 2018
    Posts
    1516

    Re: Enable limits during homing UCCNC UB1

    That's an interesting issue. You'd think the machine would know which side it was on and move accordingly. ie: the shortest direction back to home without going near a limit switch.

    I have no solution for you but I am updating to the 300 and uccnc soon too.

    I'll have a good read through all the uccnc stuff tonight and see if there is anything mentioned for a resolution.

  3. #3
    Join Date
    Dec 2020
    Posts
    5

    Re: Enable limits during homing UCCNC UB1

    Thanks.
    Before homing the machine has no clue as to where it is, at least not on such a system (steppers with encoders "hybrid servos". The direction for homing can be set, but that does solve the problem.

  4. #4
    Join Date
    Dec 2020
    Posts
    5

    Re: Enable limits during homing UCCNC UB1

    Threadlift of the week, I know but still; no input for a better solution enabling the lim sw during homing?

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