reprap 3 2-wire fan PWM signal

[adistr]

Hello, my friends!
I have a Duet 2 wifi with Reprap 3.4.
How to define the 2-wire fan PWM inversion and frequency in the config file without thermostatic control.
Thank you,
Adi

[droftarts]

@adistr see https://docs.duet3d.com/User_manual/Connecting_hardware/Fans_connecting#configuring-fans
Use ! at the beginning of the fan pin name of M950 command to invert the fan, eg

M950 F0 C"!fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1       ; set fan 0 value. Thermostatic control is turned off

Though it would be strange to need to invert a fan pin function.

Ian

[adistr]

@droftarts Thank you!
After reading what you wrote to me, I tried it. My directionality is good. What I want to do is to send a value like 80 and get partial power instead of full power (M106 S80)
How I should define it in the configuration file?

[Phaedrux]

Can you share your actual config?

[adistr]

@phaedrux

[Phaedrux]

Can you copy and paste the whole thing?

What type of fan is it?

[adistr]

@droftarts
It works according to your example, thank you very much!