Switch Z-probe not inverting
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I dont think it liked that. This is on a delta btw. Sorry for forgetting to mention that in the first place
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@madmattco said in Switch Z-probe not inverting:
I dont think it liked that. This is on a delta btw. Sorry for forgetting to mention that in the first place
Ahhhh. Yes, sorry - I know nothing about Deltas (strange mystical devices
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Do you think I would have better luck if i issued a P5 or P7 instead of P4 on M558?
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@madmattco said in Switch Z-probe not inverting:
Do you think I would have better luck if i issued a P5 or P7 instead of P4 on M558?
Not if you've wired it E0. According to the Wiki, P5 is for the Z probe connector and P7 is for the Z end stop connector. Having said that, I don't know if it makes any difference or if you have to use a different connector on a Delta. I know they home at Z max but that's the limit of my knowledge. Sorry but I'm fresh out of ideas. Hopefully, someone more knowledgable than I will step in and help you out.
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Just looking through the wiki, you may have to use S2 at the end of M574? - not sure.
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The E parameter was removed from M574 many firmware versions ago. Use the I1 parameter in the M558 command to invert the Z probe polarity.
Duet WiFi hardware designer and firmware engineer
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@dc42 said in Switch Z-probe not inverting:
The E parameter was removed from M574 many firmware versions ago. Use the I1 parameter in the M558 command to invert the Z probe polarity.
I tried that. It didn't work
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@madmattco, that's uppercase letter I followed by digit 1. Not the vertical bar character.
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Correct. I even did a direct copy and paste from the guide when i was testing. Nothing inverts it
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Which firmware version are you using?
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RepRapFirmware for Duet 2 WiFi/Ethernet version 1.21 running on Duet WiFi 1.02 or later
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Just tried the beta aswell. No luck
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What is the exact M558 command that you tried? Are you certain that there isn't another M558 line later in config.g ?
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It is set to I0 in that file but I also tried I1 too
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Would it be prudent to try a version where the E param was still valid in M574?
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That M558 command looks ok to me. Changing between I0 and I1 should make the Z probe reading when not triggered change between 0 and 1000.
Check that you don't have a M558 command in config-override.g.
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I've just had a thought - does the switch have a series LED by any chance? The Metrol positioning switch that I use does, and so the value for the probe reading doesn't go to zero but only down to around 600 IIRC. So I use P1 for the probe type in my M558 and then in G31 I use P700 for the trigger value. Even if the switch doesn't have an LED, it might be worth checking that the Z probe reading does in fact go to zero when triggered. If it doesn't, using P1 for the probe type and setting an appropriate trigger threshold in G31 might be a solution?
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I don't have a config-override file. And there is no led here. this is a film touch switch style leveling probe that attaches to the nozzle
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@deckingman can you or @dc42 tell me exactly what the trigger value is for? ive set it at 0. 600 and 1000 so far with it making no changes.
