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SmartBOB controllers and dedicated accessories / Re: Updated PMDX-411 firmware, now constant Motion Underrun errors in Mach4
« on: July 30, 2021, 09:36:11 PM »
Well this is fucking crazy. I just found a fix that worked for me:
Go to device manager settings for your Pmdx COM port and click "advanced" . Then uncheck the box for "use FIFO buffers". The 2 sliders should all turn grey.
This just eliminated all underrun errors and I just ran a complex part and it worked fine.
Why did this fix my problem? How did it work for me for a year prior without ever changing anything other than updating the Pmdx firmware (to the same version)? I have no idea and I would LOVE to know why.
Go to device manager settings for your Pmdx COM port and click "advanced" . Then uncheck the box for "use FIFO buffers". The 2 sliders should all turn grey.
This just eliminated all underrun errors and I just ran a complex part and it worked fine.
Why did this fix my problem? How did it work for me for a year prior without ever changing anything other than updating the Pmdx firmware (to the same version)? I have no idea and I would LOVE to know why.