Is there an example out there of directly driving the coils of a bi-filar stepper motor from a NI PCI-6601?

[mmv]

Is there an example out there of directly driving the coils of a bi-filar stepper motor from a NI PCI-6601? I will connect logic that converts the 4 bit output patterns to two coil enables and two coil direction signals for the coil driver FETs. I would like to output the sequence of 8 4-bit patterens stored in an array at a step rate of up to 1100hz. Can I do this with a PC and a PCI-6601? I've done this type of motor control with an 8 bit microprocessor in the past and I'm trying to do the same thing with LabVIEW without using a motion controller board. Thanks in advance for your help.

[Elijah_K]

mmv,

The digital lines on the 6601 are static, so you will only be able to time them using software, which is non-deterministic and can't be accurately timed past about 1kHz (depending upon the computer and the operating system).  The counters are fast enough, but the only options you'll have would be to set frequency or pulse width, and it'll have to be a repeating pulse train.

Your best option is to purchase one of our motion controller cards that is designed for use with this type of application.