Laser does not fullly shutoff in Constant Volicity Mode

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Laser does not fullly shutoff in Constant Volicity Mode

Postby RJS » Sat Oct 14, 2017 5:11 pm

I was having some issues with the laser not fully shutting off with the M11 command. After some experimentation I discovered that it works as expected when using the exact stop mode but not using constant velocity mode.

Here you can see the difference:

Laser Test.jpg


the 2 lines on the left are produced from the following code:

G90 G91.1 G64 G40
G17
M3 S0
G1 F600
M11

G0 X0 Y0
M10 Q200 G1 X0 Y25
M11
G0 X0 Y35
M10 Q200 G1 X0 Y60
M11

G0 X5 Y60
M10 Q200 G1 X5 Y35
M11
G0 X5 Y25
M10 Q200 G1 X5 Y0
M11

M5
M30

while the 2 lines on the right are produced by the following code:

G90 G91.1 G61 G40
G17
M3 S0
G1 F600
M11

G0 X0 Y0
M10 Q200 G1 X0 Y25
M11
G0 X0 Y35
M10 Q200 G1 X0 Y60
M11

G0 X5 Y60
M10 Q200 G1 X5 Y35
M11
G0 X5 Y25
M10 Q200 G1 X5 Y0
M11

M5
M30

The only difference is the G64 -vs- G61 in line one.

Is exact stop mode required when using the M10 and M11 commands?

Thanks,

RJS
RJS
 
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Re: Laser does not fullly shutoff in Constant Volicity Mode

Postby cncdrive » Sat Oct 21, 2017 11:18 pm

We've tried to reproduce this issue today using random settings without success.
Could you please post your profile file and tell me which controller do you have and which UCCNC version are you running?
Then we could measure things out using your settings.
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Re: Laser does not fullly shutoff in Constant Volicity Mode

Postby RJS » Sun Oct 22, 2017 11:36 pm

I am using 1.2045 with a UC100. The profile is attached
Attachments
Laser.pro
(31.33 KiB) Downloaded 16 times
RJS
 
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Re: Laser does not fullly shutoff in Constant Volicity Mode

Postby cncdrive » Mon Oct 23, 2017 7:59 pm

OK, thanks. Today was a national holiday and non working day here, but will test/measure this tomorrow.
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Re: Laser does not fullly shutoff in Constant Volicity Mode

Postby RJS » Wed Nov 01, 2017 8:56 pm

Were you able to determine if this is something I am doing wrong or if it is an issue?

Thanks!

RJS
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Posts: 20
Joined: Tue Jan 10, 2017 12:16 am

Re: Laser does not fullly shutoff in Constant Volicity Mode

Postby cncdrive » Wed Nov 01, 2017 11:47 pm

Yes, we found the problem and it was fixed in UCCNC version 1.2046: viewtopic.php?f=2&t=240&start=40
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Re: Laser does not fullly shutoff in Constant Volicity Mode

Postby RJS » Fri Nov 03, 2017 2:06 am

You all are the best! That works perfectly.

Thanks,

RJS
RJS
 
Posts: 20
Joined: Tue Jan 10, 2017 12:16 am


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