Re: emc spindle

[Jon Elson <jmelson-at-artsci.wustl.edu>]

Fred Proctor wrote:

> Ming Him Mak wrote:
>
> >
> I thought the "SPINDLE_ON_INDEX=3" will active the third axis of
> servotogo board,but it is no response. Is any pin of servotogo board
> connect to SPINDEL_FORWARD_INDEX, SPINDLE_REVERSE_INDEX........?
> <
>
> The EMC controller for the Bridgeport (bridgeporttask/brigeportio)
> interprets these as bits on the parallel port. The EMC controller for
> our desktop minimill (minimilltask/minimillio) uses the 4th Servo To Go
> axis to control the spindle, but I haven't tested this in about a year.
>
> The way this happens is that the C code in
> emc/src/emctask/minimilltaskintf.cc takes requests to turn the spindle
> off and on and routes them to the motion controller instead of the IO
> controller, as is done in bridgeporttaskintf.cc.
>
> If you want to try this, specify the minimill controllers, e.g.,
>
> [TASK]
> TASK = minimilltask
>
> [EMCIO]
> EMCIO = minimillio

Oh, great!  I didn't know this was in there.  Are there any other
differences between bridgeporttask/bridgeportio and minimilltask/minimillio

that would need to be looked into, or is this the only difference,
other than what is in the .ini file?

Is the 4th axis canned in the code, or does it use the first available
axis, after the last axis in use for motion control?
I am planning to add a 4th (rotary) axis as soon as that is ready.

Thanks,

Jon