Change spindle with laser and problem with PWM

Hi everyone, 
this is my first post here. Not really new to linuxcnc i built my first router in 2016. Now i bought a small laser and i have the problem that the laser is always full on as soon as i start the machine. I never worked with spindlespeed inside linuxcnc, but with an external vfd drive manually.
I did configure the pwm on parallel port pin 1 with stepconf as this is how my breakoutboard works. I assume that the problem is my hal or ini file, Probaby something is missing but i couldn't find out. 
Linuxcnc is generating a pwm out at 10V stable, my driver board for the laser turns to green as soon as i hook up the pwm source, so pwm is basically working expect it seems to be always at 100%. I run a testfile created with lightburn and the laser never turns off.
I use a cheap chinese mach3 Breakoutboard, the one with the blue relay and a laser LT-80-W.
I am happy for any hint pointing in the right direction.
THANKS

Thanks for the answer but this didn't help me. 
First of all, the gcode which lightburn generates is using M67. I then read thatNoteM67 will not function unless the appropriate motion.analog-out-nn pins are connected in your HAL file to outputs.
I don't have that in my hal-file generated by stepconf. So i probably need to connect that to some pins or signals or whatever and put it into the custom-hal. I just have no clue how to do that. 
I tried adding this : 
net analogout motion.analog-out-00 => pwmgen.0.value
net laserpwm pwmgen.0.pwm => parport.0.pin-01-out
but then linuxcnc is complaining about :
./custom.hal:3: Pin 'pwmgen.0.value' was already linked to signal 'spindle-cmd-rpm'
I attach my latest hal and ini files.
 

If you want the PWM to be controlled by the M67 value
you would delete (or just comment-out) this line:

net spindle-cmd-rpm => pwmgen.0.value

Sorry, didn't want to be not polite. It's just that the entries didn't work in my case, probably because of all that spindle-stuff still in my hal. So you and PCW pointed me in the right direction (i hope) . I will try later on and let you know...

So i am getting a bit further, not quite there yet, but...
after commenting out all that spindle stuff, the main lines are:

setp pwmgen.0.pwm-freq 1000.0
setp pwmgen.0.scale 100.0
setp pwmgen.0.offset 0.0
setp pwmgen.0.dither-pwm true
net analogout motion.analog-out-00 => pwmgen.0.value
net laserpwm pwmgen.0.pwm => parport.0.pin-01-out

But my laser still outputs 100%. So i opened some hal-meters:
pwmgen.0.value is showing correct values  (0.2 for a 20%pwm)
parport.0.pin-01-out  : FALSE
laserpwm : FALSE
motion.analog-out-00  showing correct values

I also tried loadrt pwmgen output_type=0 or 1, no difference. 

Any ideas ?

Electrical/wiring issues?

I would measure the voltage at parallel port P1
and see if it changes with the PWM value

Actually my chinese bob has a led for showing the pwm-stream. It's green. When i inverse parport pin 01, the led is off. I checked all my connections from the bob to the laser, they are okay. But i will measure at the head while running a programm, maybe my bob is broke ?

I measured my parallel port:
I started a test pattern for lasercut, halmeter is showing correct values on motion.analog-out-00

I measured on pin 1 about 0.1V stable, not moving
while x and y step ins are jumping between 0 and 3V4
So either my pin 1 doesn't work or (what i suppose) my pwm is still not connected to pin 1.
My hal is 3 posts above.