On 02/04/2020 12:14 AM, Gene Heskett wrote:
Neither do I, even the big cinci's x shouldn't, but I've got an encoder
on the G0704 that could on a long enough job, the scale in low gear is
effectively a bit over 14,000/rev in low gear.
Question is, would I recognize the blip when it did over flow?
On a spindle, it might result in a crash when trying to do a
spindle synched operation.
That was a bug that led to this code back in 2005 or so. If
the spindle count had wound
up past a 24-bit overflow into the higher bits of the
extended software count, and then a
spindle-sync operation was done, the higher bits would not
get zeroed out. Additional code
was added to detect the hardware counter zeroing on the
index pulse and then zeroing out the
extended software bits. I'm guessing the logic won't work
on a 64-bit variable.
Jon
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