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  1. #1
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    Default G68

    On a Haas pre-NGC with rotation and scaling option (aka Probing package) can I add a G68 X0. Y0. R180. at the start of my program and G69 at the end and expect a 180-degree rotation thru out my long program that has multiple tool changes (with cutter compensation) and G54, G55, and G56 commands?

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    I believe so. I just ran a simple sub-routine (for a quick way to achieve a "long" program), and had two tools used.

    Here is code:
    G00 G90 G53 Z0.0
    T1 M06
    S1000 M03
    G00 X1.0 Y0.0
    G00 Z1.0
    M97 P1000 L100
    G00 G90 G53 Z0 M05

    T2 M06
    S1000 M03
    G68 X0.0 Y0.0 R180.0
    G00 X4.0 Y0.0
    G00 Z1.0
    M97 P2000 L20.
    G00 Z1.0
    G69
    G00 G90 G53 Z0 M05
    M30

    N1000
    G91 G01 X-1.0 F50.0
    Y.01
    X1.0
    Y.01
    M99

    N2000
    G91 G01 X-4.0 F50.0
    Y.025
    X4.0
    Y.025
    M99

    Here is result on NC plot:g68.jpg

    Notice how the longer rectangle starts at zero and moved downward although the subroutine was programmed for y+ moves.
    I dont have a Haas in front of me at the moment but I dont see why it wouldn't work.
    I'll try tomorrow if I remember and update.
    Attached Thumbnails Attached Thumbnails g68.jpg  

  3. #3
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    Default

    Quote Originally Posted by bdrmachine View Post
    On a Haas pre-NGC with rotation and scaling option (aka Probing package) can I add a G68 X0. Y0. R180. at the start of my program and G69 at the end and expect a 180-degree rotation thru out my long program that has multiple tool changes (with cutter compensation) and G54, G55, and G56 commands?
    It would be best to have G68/69 written into every process instead of just at the beginning and end of the program.

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