LV2012 Parallel Port Control

[Jed_Davidow]

Is it possible to control the parallel port in LV2012?  Specifically, this is for a Probotix stepper driver. Evidently their own software will control the parallel port, so it can be done.

When trying to write bytes using VISA, I get a timeout; so I am assuming that their hardware makes VISA think the device is busy.  Any way to override this?

Also, Out Port.VI does not seem to be supported (none of the instances).

Error:

Error -4850 occurred at Out Port32.vi

Possible reason(s):

LabVIEW: Device driver not present or not supported.

[Anjelica-W]

What operating system are you using? Port I/O VIs are not supported on 64 bit operating systems, but will work on 32 bit operating systems when run with administrator privileges. Please refer to this KnowledgeBase for more information on this error.

[rocket_author]

Have you made sure to tie pins 11 and 12 to ground?  If they float high (and they will, if the cable is not plugged into anything) you'll get a timeout error message.