Messages

391

dspMC/IP Motion Controller / Re: Welcome to the dspMC/IP board

« on: May 16, 2008, 12:51:27 AM »

index pulse will be soon added for homing. right now it only looks at the home sensor.  the hardware support is there, need to add the logic in the code.

pid scale:
in the servo loop, pid calculation result is first divided by the scale before applying to the DACs.  lets take an example.  assuming you want Kp 100, Kd .01, and Ki .05.  multiply all by 100, which will make Kd = 10000, Kd  = 1, and Ki = 5, and therfore scale will be 100.  hope this helps.

best regards,

Anton B.
www.vitalsystem.com

392

dspMC/IP Motion Controller / Re: Welcome to the dspMC/IP board

« on: May 15, 2008, 10:02:15 PM »

Z+/Z- is the differential index signals.  we are currently working on threading and rigid tapping.  probing will be next in the queue of features to add. 

PID tuning turns out to be not too difficult.  start from low values of kp, kd and ki, and gradually increase untill you see little oscillations.  put a limit on the max integral error to remove oscillation.   you want high Kp, but not too high that oscillations get out of control (following error trip will disarm the axis if that happens).


Anton B.
VSI

393

dspMC/IP Motion Controller / Re: Welcome to the dspMC/IP board

« on: April 19, 2008, 01:21:53 AM »

hello Jim,

separate network card is not required.  if you will be accessing internet or other lan computers quite often, then it will be more reliable to have a dedicated ethernet connection. 

currently, one encoder is used per axis. should be mounted where the actual motion is being measured for feedback.

mill software is almost complete.  lathe needs some addition in mach so it can support threading and tapping via plugin.  working with Art and Brian on this issue.

we have the best price I beleive.  features are added and documentation is also being updated as we get feedback from our customers.

regards,
Anton B.
Vital Systems

394

Third party software and hardware support forums. / Re: Mach 3 Support for Vital Systems dsPMC/IP

« on: April 07, 2008, 02:05:33 AM »

hi,

sorry for the very late reply.  somehow I dont receive notification from this forum.

the plugin for dspmc is progressing very well.  We are testing with our desktop mill and there are few people around the world integrating with their system.  we have received good feeback and we are also supporting them in their efforts to retrofit their cnc machines.  hopefully I will get some videos and pictures of these machines with our board which we can publish on our website soon.

pls send your inquiries to sales at vitalsystem dot com if you like more information and oem pricing.

regards,
Abdul Rafiq
VSI