Output didn´t work

[Stan 0]

Hello,
I want to connect a fan to my Duet 6HC out4.
I use this Code in config.g
M950 F0 C"out4"
M106 P0 S1
but the output is not active. Where is my mistake?

[T3P3Tony]

@stan-0 how do you have the fan wired?

[Stan 0]

@t3p3tony
no the fan is not wired.
I just measure the voltage on the Pin.

[Stan 0]

I also try
M950 P0 C"out4"
M42 P0 S1
to set out4 but it also didn´t work

[T3P3Tony]

@stan-0 which voltage on which pin are you measuting? What is the result?

[Stan 0]

@t3p3tony
I measure:
V_outLC1 24v (Vin)
out4.tach 3,3V
out4 0V

[T3P3Tony]

@stan-0 that sounds right, the outputs switch ground, so for a 2 wire fan you would connect the 24V vin line to the 24V fan +ve wire and out 4 to the fan -'ve wire.

[Stan 0]

@t3p3tony
Thank you!