Created Date: May 03,2004

Created by: chip

I have a similar issue to the servo post. I did not find my answer in that post. I am using dynamic positioning. I am using the sample code in the CTRIO manual. If I load

LDD

K3000

OUTD

V2030

run it then load

LDD

K6000

OUTD

V2030

and run it

I do not get double the distance on the second run.

My start freq is 40 my max is 20000 and my acceleration is 2000.

Created Date: May 03,2004

Created by: ericn

I 've never used the CTRIO module, but at the top of page 8-4, it says this:

" When a new position is specified, the CTRIO moves to the new position relative to its previous position as long as the Enable Output bit remains set. Clearing the Enable Ouput bit will disable output pulsing and reset the current position to 0. "

After your first move, your 'current position ' is "3000 ". Therefore, I'd think the second move with a value of 6000 would only move an ADDITIONAL 3000 pulses. Is this what's happening?

-Eric

Created Date: May 03,2004

Created by: GKiser

chip, you can use the CTRIO's System Functions and see exactly how many pulses the CTRIO sent out its output. If you told it 3000 and it counts 3000, then it may be your stepper motor or the drive itself that is causing the error. Another way would be to connect the output of the CTRIO to its input and have the CTRIO count the pulses itself. Both of these methods proves that the CTRIO is really sending out the number of pulses you tell it to.

Hope this helps!

Greg Kiser

Host Engineering, Inc.