programming problems in daq 6229 m series

[Ozgur Can]

In our lab, we have a 6229 M series daq card. We want to send digital output ,

( three square waves and their direction values for driving 3 dc motors.

We will change pulses or frequencies during application). we tried to send the signals from single lines

(altogether we need 6 lines.)  but we failed. We could only send pulses from counter ports but

unfortunately there are only  2 counter ports. Can anybody help us about this problem?

If anybody could also send a labview 7.x program for this application we will be thankful.

[Will.D]

Have you tried using MAX to attempt communication at all?

Have you tried any other ports, or are the counter ports the only ones that will output anything on the whole board?

If you could post what you're working on, so we could see what's wrong/what you're trying to do, it'd make things easier on us.

[Otis]

Hi Ozgur,

Really you should look into getting a counter/timer board so that you can use the various counters as a means of controlling your PWM signals.  If you got something like the 6602, then you could easily control up to 8 PWM signals with great precision and flexibility.

One solution that might work for you though is to simply create a digital output signal that is correlated to some external clock (could come from one of your counters on your current board).  Because the first port of the 6229 allows you to do correlated DIO, then you could use this feature and create a signal that appears to be PWM data.  

Regards,