On Wed, 02 Jun 2010 20:46 -0400, "Paul Keeton" <[email protected]>
wrote:
> Steve,
>
> I was just issuing the command in MDI. (M64 then enter)

You should probably be doing something like "M64 P2" then enter.
The P word specifies which output you want to control.  If
you don't specify a P word it is anybody's guess as to what
value will be used.  From the error messages, it looks like
EMC is using 255 as the value.  Since M62 thru M65 support
only four outputs by default (0 thru 3), using 255 (or any
number higher than 3) will give that error message.

See the documentation for those M-codes at:
http://linuxcnc.org/docs/html/gcode_main.html#sec:M62-to-M65


John Kasunich
-- 
  John Kasunich
  [email protected]


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