Re: [CAD_CAM_EDM_DRO] Re: I am loosing one step. weir!

In a message dated 27-Jun-02 20:13:52 Central Daylight Time,
luisguillermo98@... writes:

> Sure I can try that. but I just wanted to know why it keeps doing it.
> I need to know if this is a software bug or an stepper issue.

Both, actually. But one of the little "things in life" one must deal with,
like friction! If you suddenly reverse-step stepper-motors, the normal
"ringing" that might be handled just fine if stepping stopped for a time, or,
another axis were "suddenly" chosen. BUT, if you reverse-step the SAME axis,
the motor is "still ringing", so the motor can integrate this into a phantom
step. Hard to describe without a pad and pencil and show-and-tell time. As
I said, you can "fix this" by putting a delay-loop after each step-out
command. In BASIC, this could be as simple as a single-line FOR-NEXT loop
like this:
100 STEP XF (Step X forward)
110 FOR I=1 TO 10:NEXT (Added DELAY-LOOP)
112 STEP XR (Step X reverse)


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