gvl.axes[i].Axis.Status.Moving doesn't seem to work if the axis isn't enabled.
Therefore added a check to see whether gvl.axes[i].Axis.NcToPlc.ActVelo <> 0.
If it's non-zero then don't restore the encoder value on restart.
MAIN.SHUTDOWN also added to the normal operation cycle, this is to allow restart
after a "Reset Cold" command in Visual Studio, otherwise the only time position is
restored is an actual lose of power. It might be also useful when a user restarts
the PLC program manually.
Also modified a few comments in MAIN.STARTUP.
df44dd3b82