Delayed stop response from rapid move

Question for you guys. If I do a long rapid move on X or Y, I get a follow error after about 11 inches. Right now my rapid error is .5" and increasing that to 1" has allowed me about a 22" rapid move before the error. What this suggests is a cumulative increase in the F-ERROR as my machine moves rapidly on X or Y.

Now my encoder scale is 12000 and I'm wondering if I need to increase something so that LinuxCNC it can keep up with my encoders? I have a noticeable delay when I stop a rapid move on my keypad before the servo actually stops moving. The longer the rapid move, the longer the delay before it stops. -Also adding to my cumulative error theory.

So I figured I was missing something small here ...any help would be appreciated.

It is properly tuned at 30 IPM and my f- error is near zero. But when that puppy rapid moves... That's when I see this. If I try to remove f-error at the rapid speed, won't it make the slower speed moves show f-error below the zero line?

I dropped my rapid to 80ipm and it fixed the issue. When it was going 100ipm my encoder got behind and then the further it went the bigger the F-Error. So dropping my rapid to 80 instead of 100 was an easy fix. It is still plenty fast enough so I'm cool with that and now even when moving rapidly I have almost no F-Error at all.

Hi Andy, The servo motors can definitely move a lot faster. I've tested it with the manual voltage commands and my finger on the F2 key. During experiments with this and watching the scope I see the F-Error increase and then after about 1/2 a second second it sharply increases and goes out of sight. I think by having my scale at 12000 it's maybe going beyond what my 7i43 card can count per second or something odd? Doing the math that is 12000 x 5 = 60K pulses per inch. If I'm traveling at 100ipm that's 1.666ips or 100k pulses per second. My parker servo is set at scale 200,000. That one I had to lower even more down to 30 inches per minute and that one can DEFINITELY fly many times faster if I give it 10v. So it's something else I'd like to try to understand so I can correct things.

My quick fix of lowering my rapid jog down to a level that doesn't produce an F-Error seems to be fine but it limits me on how fast I can go.

Hey Andy,

Here are my 2 config files. Everything seems to be working great so I'm confused where this behavior is coming from.