Duet3, wiring endstop to iox.in and also to iox.out ?

[joeko]

hi,
i am building an voron 2.4 with an duet3 mini with toolboard.
now i have found an config.g on discord with these endstop in the config

; Endstops
M574 X2 S1 P"^0.io1.in"
M574 Y2 S1 P"^0.io1.out"

hmm, until now i thought the the endstop (switch) has to connect to ground and iox.in. is both possible ?

[jay_s_uk]

@joeko outs on the IOs can be used as ins

[droftarts]

@joeko @jay_s_uk is correct, but be aware that if you use an io[x].out as an input, it is only 3.3V tolerant. io[x].in are 30V tolerant.

This is noted on the Duet 3 6HC and Mini 5+ hardware pages, but not on the expansion and tool board pages. I’ll check this is universal to Duet 3 with Tony/dc42, and add it to those pages as necessary.

Ian

[joeko]

@droftarts said in Duet3, wiring endstop to iox.in and also to iox.out ?:

@joeko @jay_s_uk is correct, but be aware that if you use an io[x].out as an input, it is only 3.3V tolerant. io[x].in are 30V tolerant.

This is noted on the Duet 3 6HC and Mini 5+ hardware pages, but not on the expansion and tool board pages. I’ll check this is universal to Duet 3 with Tony/dc42, and add it to those pages as necessary.

Ian

ok, greate
than i connec the endstopswitch between iox.out and ground

[fcwilt]

@joeko said in Duet3, wiring endstop to iox.in and also to iox.out ?:

ok, greate
than i connec the endstopswitch between iox.out and ground

Why would you want to do that?

Frederick

[joeko]

@fcwilt said in Duet3, wiring endstop to iox.in and also to iox.out ?:

@joeko said in Duet3, wiring endstop to iox.in and also to iox.out ?:

ok, greate
than i connec the endstopswitch between iox.out and ground

Why would you want to do that?

Frederick

for the voron you need 7 driver and the endstop are limited. and if there is no problem to configure the x+y endstops to io2.in+io2.out than i need only one io connector. some people use the io also for chamber temperture and so on. i found this on discord and was confused about it.

[joeko]

@fcwilt said in Duet3, wiring endstop to iox.in and also to iox.out ?:

@joeko said in Duet3, wiring endstop to iox.in and also to iox.out ?:

ok, greate
than i connec the endstopswitch between iox.out and ground

Why would you want to do that?

Frederick

or do you mean why between xxx.out and ground ?
if so than offer the wirring guide this (between xxx.in and ground) ...or am i wrong ?

[fcwilt]

@joeko said in Duet3, wiring endstop to iox.in and also to iox.out ?:

or do you mean why between xxx.out and ground ?
if so than offer the wirring guide this (between xxx.in and ground) ...or am i wrong ?

Sorry I wasn't clear.

Why would you want to use an output for an input given the numerous inputs usually present on a Duet?

Frederick

[joeko]

@fcwilt said in Duet3, wiring endstop to iox.in and also to iox.out ?:

@joeko said in Duet3, wiring endstop to iox.in and also to iox.out ?:

or do you mean why between xxx.out and ground ?
if so than offer the wirring guide this (between xxx.in and ground) ...or am i wrong ?

Sorry I wasn't clear.

Why would you want to use an output for an input given the numerous inputs usually present on a Duet?

Frederick

at the moment i am building the printer and have looked for an rrf firmware or a ready config.g with nema settings and so on. i found something on discord with these endstop wiring and was confused. the xy endstop pcb has 4 cables, one for ground, 2 for x+y signal and for voltage. if there is no reason against this than is it possible with one cable (3 cables to one connector) to connect the xy endstop pcb to the toolboard or board. but of course it is also easy to use two connector for signal and they share the ground.

sorry for my english, it isnt my homelanguage

[fcwilt]

@joeko

Thanks for the explanation.

Frederick