i'll try that. so there is a trajectory planner in mach4? i was going to look but forgot to see if there was an option to not combine separate moves. now that i know how to get around this i am fine but it was a surprise to see the cutter clip the corner of a pocket as it climbs out. i had a z move separate and an x and y i think this is only a problem with other axis following a z that was intended to clear obstacles.
Could you consider putting a G61 (exact stop) ahead of the G1 F83 Z .2 move and a G64 (exact stop cancel) after it? This prevents the trajectory planner from blending the next move with the critical retract move in Z.
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From: [email protected] [mailto:[email protected]] On Behalf Of spencer@...
Sent: Sunday, April 04, 2021 4:42 PM
To: [email protected]
Subject: Re: [MachCNC] odd behavior ESS?
I have been learning a lot about mach4 and am getting quite comfortable with it. I do not need to add anything other than my little parts counter and an external switch.
I would like to get xbox controller working but i just can't seem to on the router computer, only the house computer.
here is the odd behavior. i think this is an ESS issue. in mach3 i has having strange behavior at exactly the same spot. with mach4 i didn't until suddenly it also did the same thing. if i don't have the line in bold shown below (using a short dwell) the z and followiong x and y moves get combined
G1 F51 Z -1.15
G1 F31 X 1.73
G1 F83 Z .2
G4? P100 (dwell to prevent combined move)
without this line the G1 F83 Z .2 and the next G1 get combined into one move clipping off
the corner of the part? with the 100 ms dwell it moves to the z location and then to the X and Y
i checked this over and over and am not imagining it? also previously this is the exact spot where phantom moves (and usually corrections that cancelled the phantom move) happened and have happened twice now with mach4 so it must be an ESS bug or maybe something odd about my gcode that i don't understand
G52 X0 Y0 Z0 (cancel all offsets)
(SECOND WARP HOLE)
G52 X-.555 Y .875 Z -1.67
(G1 F61? Z .3 just in case)
G1 F93? X2.1003 Y0.5649
and a larger part of the context here
?
M9 (mist off to release clamp)
G1 F10000 A 90
M7 (mist on to set clamp)
M3 S1000
(DO DSLOT FINISH)
G1 F65? Z 0 (might be able to move a little less to finish cut might help ejection)
G52 z - 1.67
G0 X 2.1541 Y 2.7725
G1 F93? X 2.1541 Y 2.7725 (was Y 2.71)
G1 F75? Z 0.0
G1 F83 Z -.35
G1 F31 X 1.73
G1 F31 Z -.7
G1 F32 X 2.1541 (this one needs to be slower)
G1 F51 Z -1.15
G1 F31 X 1.73
G1 F83 Z .2
G4? P100 (dwell to prevent combined move)
without this line the G1 F83 Z .2 and the next G1 get combined into one move clipping off
the corner of the part? with the 100 ms dwell it moves to the z location and then to the X and Y
i checked this over and over and am not imagining it? also previously this is the exact spot where phantom moves (and usually corrections that cancelled the phantom move) happened and have happened twice now with mach4 so it must be an ESS bug or maybe something odd about my gcode that i don't understand
G52 X0 Y0 Z0 (cancel all offsets)
(SECOND WARP HOLE)
G52 X-.555 Y .875 Z -1.67
(G1 F61? Z .3 just in case)
G1 F93? X2.1003 Y0.5649
G1 F51 Z -.14
G2 F93.0 X2.0828 Y0.5696 I0.0 J0.035
G2 Y0.6302 I0.0175 J0.0303
G2 X2.1353 Y0.5999 I0.0175 J-0.0303
G2 X2.1003 Y0.5649 I-0.035 J0.0
G1 F93.0 Y0.5149
G2 F93.0 X2.0578 Y0.5263 I0.0 J0.085
G2 Y0.6735 I0.0425 J0.0736
G2 X2.1853 Y0.5999 I0.0425 J-0.0736
G2 X2.1003 Y0.5149 I-0.085 J0.0
G1 F83 Z .1? (retract)
G52 X0 Y0 Z0 (cancel all offsets)
--
Best regards, Spencer Chase
67550 Bell Springs Rd.
Garberville, CA 95542 Postal service only.
Laytonville, CA 95454 UPS only.
Spencer@...
(425) 791-0309
