[LinuxCNC/linuxcnc Issue#395] PnCConf Backlash will not set ‘STEPGEN_MAXVEL’ and ‘STEPGEN_MAXACCEL’

Here are the steps I follow to reproduce the issue:

1. Use PnCConf to configure ini and hal file
2. Turn on the back lash compensation
3. ‘STEPGENMAXVEL’ and ‘STEPGENMAXACCEL’ properties are not set in the ini files

This is what I expected to happen:

‘STEPGENMAXVEL’ and ‘STEPGENMAXACCEL’ properties should be set

This is what happened instead:

‘STEPGENMAXVEL’ and ‘STEPGENMAXACCEL’ properties are not set. They are referenced in the hal file, thus linuxcnc does not start

It worked properly before this:

Without backlash compensation it works properly.
It only affects the axis for which back lash compensation is turned on.

Information about my hardware and software:

Latest linuxcnc (2.7.11), using a mesa 7i76e
Looks like this bug has been around for at least a year:
https://forum.linuxcnc.org/39-pncconf/31749-pncconf-and-backlash