Re: [CAD_CAM_EDM_DRO] Re: Lathe Software question

Hi Carey.

No I was not kidding, but I was not thinking in terms of the sort of mains
borne hash either. Rather in terms that when you get his sort of
problems often the the interference can be coming from within the system
itself, ie pulses other than the intended ones from for instance the
computer itself. I spent a week chasing a fault (intermittent - the best
sort!) in a mainframe, which was due to 200 MHz. pulses appearing on a
nominally bonded and grounded point in the circuitry, which was not done
properly. That one was a lulu - it even occasionally generated a system
reset pulse and restarted the system as at switch on in mid flight.

Jim Gregg.
At 09:38 AM 10/12/00 -0400, you wrote:

>Jim: You are kidding ,right? We are talking about tens of thousands of
>extra pulses in under a second here.The axis went to rapid feed. It just
>went screaming off into the part.
>Carey
>
>Alison & Jim Gregg wrote:
>
>> Hi Carey
>>
>> Sounds like random (electrical) noise getting into the system somehow.
>>
>> Perhaps checking the grounding / bonding between the laptop and the
>> system
>> might be a way to go.
>>
>> Jim Gregg
>>
>> At 09:05 PM 10/11/00 -0400, you wrote:
>> >Ballendo: Yep, it was the z axis and it was a rapid move. Zip-crunch-
>>
>> >dive for the escape key. Lots of pulses came from somewhere at the
>> wrong
>> >time. Several times I encountered something else that was strange.
>> While
>> >setting my coordinates after a tool change, I would set one axis and
>> jog
>> >to a different point to set the other axis only to find that the one
>> >already set was making big numbers like a half inch move showing ten
>> >inches or something like that. I checked the settings file and came
>> back
>> >and it was normal. I again figured it was the notebook computer doing
>>
>> >strange things. It has not done that for a while.Hmmmm.
>> >Carey
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>Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the

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