M452 always on, vs M42

printer258

I have the following in the config file
M452 C"!duex.pwm1" R255 F200; Enable Laser mode, on duex pwm1, with max intensity being 255, and a PWM frequency of 200

but as soon as the printer is turned on it becomes active and on

if I instead run it manually via below it works great manually turning on and off
M950 P2 C"duex.pwm1" Q5000
M42 P2 S150; turn on
M42 P2 S0; turn off

What am I doing wrong in terms of getting m452 to work instead.

Thanks

dc42

@printer258 said in M452 always on, vs M42:

M452 C"!duex.pwm1" R255 F200; Enable Laser mode, on duex pwm1, with max intensity being 255, and a PWM frequency of 200

Remove the ! from the pin name.