How to stop spindle 3 mm before end of the line ?

What does this line do?
M68 E0 Q323.36218

and here
M64 P0
M68 E0 Q323.36218
G4 P0.1
M65 P0

you turn on the spindle, wait 0.1sec and turn it off?

M68 E0 Q323.36218 - that line do nothing

Pump starts after M65 P0 ( but only when starts move ) , so if we do G04 P0.5 after M65 P0 pump will wait 0.5s ( the pump starts with the movement)

what I need is:
1.pump starts ( no move )
2. G04 P0.5 ( wait a bit)
3 move ( drawing a line)

thanks for help

That looks very strange!

Immediate digital out should turn on immediate not only when the movement starts...

Nick,
Can you check my "hal" files - mayby there is something wrong

I think the problem is somewhere here:
net len => sum2.0.in0
net max <= sum2.0.out
net max => wcomp.0.max

because when we reset integ, it will be = 0 and it can be not inside wcomp's window.
You can try to define wcomp's min to some value...

change this
net min => wcomp.0.min
net min => sum2.0.in1
setp sum2.0.gain1 -1
to
setp wcomp.0.min -1
setp sum2.0.in1 -1

Nick,
today I have checked all one more time agine ( with very slow speed)

I set min to 3 mm

After
G01 Z1.500000 F100.0(Penetrate)
I put for instance:
M64 P0
M68 E0 Q323.36218
G4 P2
M65 P0

so maschine is going to Z1.5mm , than waiting 2 seconds than starts moving ,THAN AFTER 3 MM PUMP IS TURNNIG ON than 3 mm before end of the line is turnning off.

Is there any way to turn pump on when maschine goes to Z1.5 mm?

Thanks for help

Have you tried what I've posted just before?

just try to replace
net min => wcomp.0.min
to
setp wcomp.0.min 0

As you told me I did :
setp wcomp.0.min -1

but there was some "debug" problem

what problem exactly?
post the whole error (inside tag code )