Problem with the DIR pin out - can not reverse my stepper motor..!

[bacobaco]

Hi,

I'm in trouble with the DIR output. I use PXI 7350 and the 7764 board.

My motor never changes direction and the signal DIR stays at 0 volts even I create motor cycle through MAX (or through a Labview example).

Test I've already done:

- I try to change the drivers output to "open collector" instead of totem. Ten the DIR output stay at 5 volts even I use MAX motor cycles.

- I try differents AXIS with my 7350 same problem

- I test my power driver board controler and I can reverse the motor if I apply directly 5 volts on the DIRECTION PIN of this motor controller.

I'm gonna be nervous...

thanks for help !

-damien

[bacobaco]

I finally found the problem.

It is a cable problem, I use a RIO cable instead of a SH68-C68-S cable...

sorry for disturbance...

best regards,

-damien

[AnalogKid2DigitalMan]

Looks like you took a STEP in the right DIRECTION!