Re: [CAD_CAM_EDM_DRO] Re: Deskncrt

Yes, EMC can run step and direction mode open loop (that is what most people
do). It drives the Gecko G320/340 units just fine. I would suggest you use
steppermod.o instead of freqmod.o in this application. You can also set up
the system to dual boot between DOS and Linux or you could just make a DOS
boot floopy and boot on that if you want to run CNC Pro.

Check out www.Linuxcnc.org for some documentation on EMC.

Tim
[Denver, CO]

-----Original Message-----

>Thanks for the replies,
>Yes I'm using the G320's Mariss, I know about encoder feedback in
>hardware, just didn't understand why deskncrt would require tuning
>when running in open loop.
>
>Tim, can I setup EMC as open loop and run G320's (servo's). Can Dos
>(Cncpro) still boot up if needed?
>
>So many questions,...... so little time.
>
>Any docs on the subject ?
>
>
>--- In CAD_CAM_EDM_DRO@y..., mariss92705@y... wrote:
>> Frank,
>>
>> Good morning! I can't answer anything about software but about the
>> G320 I can.
>>
>> Unlike a step motor, DC motors need feedback to control them. Though
>> your software may run open loop, the G320 runs the motor closed
>loop,
>> i.e. the loop is closed at the drive using the PID algorithm.
>>
>> Mariss
>>
>> --- In CAD_CAM_EDM_DRO@y..., shymu@b... wrote:
>> > I bought Cncpro for the constant contouring feature. However I'm
>> > having trouble getting it to work properly. I had played with
>> > Deskncrt in the past and loved the smoothness, but couldn't keep
>it
>> > from overshooting the tool path. I'm running at 2000 steps per in.
>> > Max speed is 10 inchs a sec. Using servo's with encoder feedback
>to
>> > hardware (Gecko G320). If using Deskncrt in an open loop mode why
>> > would the PID need to be tuned. Can someone help with some basic
>> info
>> > for setting up Deskncrt to get me started in the right direction?
>> >
>> > Thanks, Frank
>
>
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