joint0 following error fault

Right now I can afford only one motor and drive so I am only trying to get the X axis (joint 0) going.
Gotta say this Linux CNC software is pretty darn good; it has just about worked out of the box.
I have a 31 oz-in Pittman servo motor running off an Advanced Motion Controls AZ12 drive being commanded by a */- 10V current command signal.
The system is stable, jogs at speed, holds position when stopped.
Here's my issue:

When I turn the shaft of the X motor while it is holding position, it fights me (which it should do) trying to stay where it is commanded to be.
If I muscle up on it a bit, get it .002 off position, it faults out with a joint 0 following error.

The .ini file for joint 0 has FERROR set to .020 ... so I don't see why it's faulting out at .002.
For fun, I edited the .ini file for joint 0 and set FERROR to 1.00, and re-started the application. Made no difference.

I'm thinking the software ignores the .ini file and gets a max following error parameter someplace else.
Does anyone have any guidance for me?
Thanks.

There are two following error settings:

FERROR and MIN_FERROR

The actual limit value chosen is proportional to
the current velocity with MIN_FERROR used at 0 velocity
and FERROR used at the maximum velocity.

Okay ... so since my X motor is at zero velocity then the min following error parameter is used.
Thanks. Gotta go test.

It works. Setting min following error = max following error = .020, I can crank on the motor shaft all I want (get to about .006 error) and no alarm. Thank you.

i have the same question with joint 0 following error, i don't think setting min_ferror = ferror is the answers to this question, the following error occurs when i want to set the value near approaching to zero. i check the pins of f-error,f-errored,pos-cmd,pos-cmd, i find it doesn't excel the f-error-lim. Do you have any answers? Thanks.