Laser does not fullly shutoff in Constant Volicity Mode

[RJS]

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:

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

[cncdrive]

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.

[RJS]

I am using 1.2045 with a UC100. The profile is attached

[cncdrive]

OK, thanks. Today was a national holiday and non working day here, but will test/measure this tomorrow.

[RJS]

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

Thanks!

RJS

[cncdrive]

Yes, we found the problem and it was fixed in UCCNC version 1.2046: viewtopic.php?f=2&t=240&start=40

[RJS]

You all are the best! That works perfectly.

Thanks,

RJS