PWM output on CNC BOB

[jolyonjenkins]

Thanks.
But I don't think I've explained my confusion.
Assume the bob has the 12v in. There will be a variable DC voltage on the PWM pin. That voltage is controlled by the frequency of a signal on one of the pins, generated by linuxcnc. I can use stepconf to assign the pin that produces the signal. But how does the bob know which pin to expect the on?

[Clive S]

Thanks.
But I don't think I've explained my confusion.
Assume the bob has the 12v in. There will be a variable DC voltage on the PWM pin. That voltage is controlled by the frequency of a signal on one of the pins, generated by linuxcnc. I can use stepconf to assign the pin that produces the signal. But how does the bob know which pin to expect the on?

You have to tell Lcnc which pin to send it to.

Can you post the config

#### Spindle stuff ###

net spindle-cmd-rpm => pwmgen.0.value
net spindle-on <= spindle.0.on => pwmgen.0.enable
net spindle-pwm <= pwmgen.0.pwm
setp pwmgen.0.pwm-freq 100
setp pwmgen.0.scale 1000
setp pwmgen.0.offset 0.1

setp pwmgen.0.dither-pwm true

net spindle-cmd-rpm <= spindle.0.speed-out
net spindle-cmd-rpm-abs <= spindle.0.speed-out-abs
net spindle-cmd-rps <= spindle.0.speed-out-rps
net spindle-cmd-rps-abs <= spindle.0.speed-out-rps-abs
net spindle-at-speed => spindle.0.at-speed
net spindle-cw <= spindle.0.forward

### Parport Pins ###
setp parport.0.pin-01-out-invert 1
net spindle-pwm => parport.0.pin-01-out These are the pins on the bob
net spindle-cw => parport.0.pin-14-out
net spindle-on => parport.0.pin-17-out