Bug - Prusa Connect w/ XL - Cancel Object Fails Error 422 w/ large number of objects
PrusaConnect - Current Version
Printer type - XL - 5 Head
Printer UUID - 8f54f7ba-2550-4658-865d-0e6abbc44f6d
Printer firmware version - 6.1.3+7898
PrusaSlicer version - 2.9.0
Description of the bug, including steps to reproduce (if possible):
Cancel object is a critical function to me, I am a manufacturer, I fill the plate every print, every time with a large number of small objects (up to 500). When an individual object fails I must have the ability to cancel it so the entire, multi-day print does not fail.
Bug: can’t seem to cancel objects consistently, seems like the larger number objects will not allowed me to cancel and some of the smaller number objects still allow cancellation. The error I received through Prusa connect is “HTTP error 422 - command was rejected by the printer” see screenshot below. In the screenshot I tried to cancel 422 and got the error, however, if I tried to cancel object 200 the cancellation goes through normally. I’m not sure if it is a number limitation, or if it is a part:plate orientation related issue but I really need this fixed ASAP. I was able to replicate the issue after cycling power to the printer with the same job.
While you're at it would make a lot of sense if the object cancellation GUI was at the top of the screen, above the list of the objects, not randomly three quarters of the way down the list. obviously this GUI is the only efficient way to identify the part needing to be canceled with a high number of objects on the bed and will be used each and every time a cancellation is needed.
thank you for the great work on everything you have done with the XL!
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RE:
AFAIR this is a firmware limitation that it is possible to cancel only the first 8 (or 16 can't remember) items only. https://github.com/prusa3d/Prusa-Firmware-Buddy/issues/3418
Also such things should be reported on github https://github.com/prusa3d/Prusa-Firmware-Buddy
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RE: Bug - Prusa Connect w/ XL - Cancel Object Fails Error 422 w/ large number of objects
It seemed to work for the first 100 or so, this is a critical issue for those of us that use these in farms. Please increase limit to 500 objects. I've been using cancel object with 0.0 issues on my entire Prusa farm for years with RPI and octoprint, now that im forced to used PrusaConnect with the XL, I need it work. Bigger printer, bigger cancel object requirements... Come on guys!
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RE:
Why no responses from Prusa on this. I have posted it on Github, but what's the point of a bug reporting forum if no one chimes in from the bug fixing the development team?
pasting for attention: https://github.com/prusa3d/Prusa-Firmware-Buddy/issues/4375#issuecomment-2580315085
"Please give us updates on this! I have 2 XL printers printing 450 parts per plate and it is an absolute nightmare when one of them becomes unstuck!!!!! I did not purchase these printers to print giant multicolored dragons, I purchased them as production tools.. we absolutely need this feature yesterday, Octoprint has had it for years. I don't care if you can do it from the touchscreen on the printer, I just want to be able to cancel from the prusa connect GUI/ dashboard"
I'm sure there's lots of people with this issue, here's another person:
can you imagine what it's like when one of these comes loose or gets a blob on it?
If my post helps you please consider downloading & making one of my most popular Prusa-Printables 3D models below:1. Ultimate Printer Knob Upgrade - The Best Knob of Both Worlds 2. Prusa MK3S Right…
RE:
I do have a similar issues as you, the only difference is I am not getting the error in Prusa Connect instead it says "Command send successfully." Regardless the object is not cancelled.
On printer controls it only shows first 16 objects (they are not numbered). Even after trying "cancel current object" object was not cancelled.
We are printing 80-300 parts per plate and this feature is critical for our operation.
Here is how it looks after cancelling all available object.
RE: Bug - Prusa Connect w/ XL - Cancel Object Fails Error 422 w/ large number of objects
Additional info:
