24V Endstop on Duet3 6MB

[neo0204]

@jay_s_uk Yes, i am testing it in both states.
But it's giving the same results on M119.

[neo0204]

@jay_s_uk Also when the sensor is triggered, I checked with the multimeter, and it's passing the 24V signal to the board.

Am I am missing something in the config file or at the firmware level?

[jay_s_uk]

@neo0204 I take it the 24v PSU you are using is the same one you are powering the board with?
you may need to use the internal pullup resistor.
add a ^ to the pin name

[neo0204]

@jay_s_uk Yes the PSU is the same,

Like this?

M574 X1 S1 P"!^io0.in" 

[jay_s_uk]

@neo0204 yep

[neo0204]

@jay_s_uk I tried this yesterday and sadly it's not working.

What else I can do to make it work?

[dc42]

@neo0204 said in 24V Endstop on Duet3 6MB:

@jay_s_uk Also when the sensor is triggered, I checked with the multimeter, and it's passing the 24V signal to the board.

Am I am missing something in the config file or at the firmware level?

An NPN sensor will not output 24V. I suspect you have a PNP sensor.

[neo0204]

@dc42 Thank you for your response.

I have got this, Is it PNP or NPN?

If it is PNP, how do I connect it to the duet board.

[neo0204]

@neo0204 Confirmed it from igus documents, it's PNP.

Please help me on how to connect this.

[dc42]

@neo0204 see https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe?revisionid=HEAD#Section_PNP_output_normally_open_inductive_or_capacitive_sensor.

[neo0204]

@dc42 Thank you, I will try this.