How to generate two finite digital pulse train using pcI 6221

[hma01]

Hi All,

I have a NI6221 PCI board, and am trying generate two finite digital pulse trains in my project to control a stepping motor: one pulse train is a single pulse for the motor direction, the other is a finite pulse train for the motor movement.

I looked into the example  "gen dig pulse train-finite dig start.vi", and was able to generate the finite pulse train using counter 0. My question is how could I generate the single pulse? It seems that I can not use counter 1 because it is already paired with counter 0. Could  anyone tell me how to generate a single pulse using a digital line, and keep the timing relationship with the counter 0? I am totally new to labview. Your help will be greatly appreciated.

Thank you,

hma01

[Chris_K_]

Hi, have a look at the following link.  It tells you how to create a finite digital pulse train with a single counter.  Then you can use the Gen Dig pulse with Dig Start in example finder and use the counter internal output to trigger the pulse. 

Chris_K

Message Edited by Chris_K_ on 03-13-2008 07:11 PM