On Thursday 21 August 2008 15:17, Mark Rivers wrote:
> > This assumes that the current position information is somehow still
>
> valid,
>
> > at least approximately. However, tehre is no guarantee taht this is so
> >
> > before the motor gets homed. Thus, I agree that soft limits make no
>
> sense
>
> > during home operation.
>
> I disagree. There are other ways besides home to know that a motor is
> in approximately the correct position. For example, there may be
> indicators on the motor slides, or one may use a limit switch as a
> fiducial.
>
> Save/restore motor positions are another example. If the IOC and
> controller have been rebooted, so the motor has not been "homed" in the
> memory of the controller or IOC, but the positions are almost certainly
> still correct.
Ok, what about a compromise? Add a switch to turn off soft limits during
home run.
Cheers
Ben
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