Ferror & minferror

Well we finally got " the Beast" up and running under EMC2. The
"Beast" is a Ramill VI, Big Iron, VIA mini computer, running Linux
(BDI rc-46) Motenc-100 motion board driving brushless AC servos that
has been in the works for sometime.
It was running under EMC about a year ago... but we were plagued by
following errors. I'm wondering if anyone has a good starting point
for setting "ferror and minferror" in the *.ini file right now I
have it set at
ferror =0.100
minferror = 0.01
I just looked at the EMC Handbook and I don't really understand it...

Any words of wisdom out there?
thanks
Mike Bush