Machine not matching G-Code

[Zombie (Rob M)]

I made a display box on my S3 yesterday that wasn’t very flat on the top or the bottom after I glued it up. Today I made a simple flattening program (side to side raster with a profile at the end), saved the code, opened it and added G4P3 after the M3 command and ran the program.

The spindle moved to the corner didn’t start until the plunge. 5sec into the clip. Everything ran fine with the raster. But what I can’t figure out is, after the raster the spindle stops,1:14, moves to a corner and then starts back up on the plunge. This is the first time the spindle has ever shut off between moves.

I ran the program 5 times and the same thing happened every time. I’ve looked over the gcode and the only starts and stops I see are at the beginning and the end.

T1
G17
G20
G90
G0Z0.8000
G0X0.0000Y0.0000
S15000M3 - Spindle start
G4P3 - Pause (Added this)
G0X-3.2950Y-2.0163Z0.1000 - Move to start of raster
G0Z0.0000
G1X-2.7950Z-0.0050F20.0 - Ramp in
G1X-3.2950Z-0.0100
G1X3.2950F70.0
G1Y-1.6163
G1X-3.2950
G1Y-1.2163
G1X3.2950
G1Y-0.8163
G1X-3.2950
G1Y-0.4163
G1X3.2950
G1Y-0.0163
G1X-3.2950
G1Y0.3837
G1X3.2950
G1Y0.7837
G1X-3.2950
G1Y1.1837
G1X3.2950
G1Y1.5838
G1X-3.2950
G1Y1.9837
G1X3.2950
G0Z0.1000
G0X3.3750Y-2.3750 - End of raster
G0Z0.0000 - Spindle stopping - no M5
G1X2.8750Z-0.0050F20.0 - Spindle starting - no M3 / Ramp in / start of profile
G1X3.3750Z-0.0100
G1X-3.3750F70.0
G1Y2.3750
G1X3.3750
G1Y-2.3750
G0Z0.1000
M5 - Spindle off
G0Z0.8000
G0X0.0000Y0.0000
M2

It’s not really a big deal, I just kind-a want to know why my machine is doing things it’s not told to do.

[Ed.E (Ed)]

Check to be sure $32=0 in your GRBL firmware. I accidentally left a $32=1 setting after using my laser and got the same behavior.

[Zombie (Rob M)]

Ed, Thank you for your response. You are 100% correct. I ran the laser right before I had the issue and forgot to go back to $32=0. At least I know it was operator error and the machines aren’t thinking for themselves. Yet.

[Ed.E (Ed)]

Your very welcome. I’ve added $32 settings to a couple macros in Lightburn, now if I can just remember to use them.

I wonder what ever happened to Rob Zombie…

[Zombie (Rob M)]

Haven’t tried Lightburn yet, using Vcarve with the laser module (Still haven’t quite figure it out) and manually inputting $32 settings through the MDI. I try to duplicate what I’ve seen on here with little success.

I haven’t heard anything about RZ in years.