Pause problem with 1.20beta2
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Please read the upgrade notes. The M911 parameters changed in beta 2. However, it is unlikely that the power fail handing will work well on a 12V system.
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Just noticed 1.20 beta 3 is out and resolves most of the issues I am having thanks.
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My system still will not let me resume a print though. I dont really need resume upon power failure so what do I need to change my system to allow pausing and resume without voltage issues.
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You are quite right, resume after pause still doesn't work in beta 3 if you don't have resume after power fail enabled. I'll do a beta 4 to fix that and the bug with simulating prints.
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DC, you said that power fail won't reliably work on 12v? Does that mean I should not enable it on my 12v printer?
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You can enable power fail handling on a 12V system if you like, but there may be insufficient power to raise the nozzle above the print and retract filament, and perhaps also insufficient power to finish writing the resurrect.g file to the SD card. That's how it is on my 12V SCARA printer. However, that printer has no heated bed, so the 12V PSU is only rated at 5A. You might have better results on a more conventional printer with a heated bed at 20A or greater PSU.
I published beta 4 a few minutes ago.
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I'm not sure if this is relevant, since I'm on an ancient beta, but since it seems you're working on the pause/resume code I thought I'd mention it. I'm on 1.15 beta 3 (yeah, I know) and on a duet 0.8.5. I found recently that pause and resume worked fine the first time. I let the print continue a bit, paused again, but when I resumed the head crashed into the print… it might have been trying to find the old resume point.
I haven't had an opportunity to confirm if this is repeatable behaviour, but it would be easy for anyone to try themselves. Thanks!
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Thanks, but you'll need to replicated that on recent firmware before I look at it.
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Ive just posted a pause issue when filament monitor triggered an error on beta 4, doesnt do it on beta 1, see the 1.20 beta 2 thread.
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Hmm, could anybody test pausing for me on a recent firmware build? During a print (that you don't mind discarding for testing purposes) can you pause the print… wait a few minutes... resume... let the print go on for a few minutes, pause, wait a few more, then resume, and tell me if the head crashes or attempts to move to some odd location? I'm in the middle of some important prints, and I've found a firmware build that is stable for me, hence why I haven't updated in ages. Otherwise, I'd update and try it myself.
