Re: [CAD_CAM_EDM_DRO] Re: stepper vs servo

Monte Westlund wrote:

>--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@p...> wrote:
>
>
>>Now, let me clarify:
>>
>>With the Gecko, the signals going between the computer and Gecko
>>
>>
>are
>
>
>>one-way:
>> From the computer to the Gecko drive. The only indication the
>>
>>
>computer
>
>
>>gets is
>>that a fault has or has not occured. If the drive faults, then the
>>computer had so
>>idea of actual position.
>>
>>
>
>Can the computer really get any notification of a fault? Mine
>doesn't. I'm running Mach1 and if my 320's fault Mach1 keeps merrilly
>chugging along.
>
>Am I missing something in my controller?
>
>

Maybe. EMC definitely can monitor one of the port input pins to detect a
fault. there is a board that someone designed to or the fault outputs
of the
Gecko drives together, and if any one faults, it trips them all to stop
motion
on all axes, and notifies the computer, too. Is there a parallel port
pin that
can detect an e-stop or fault condition?

Jon