How to control parallel pins I/O thru USB converter

Few years back I developed a 5.1 Labview program and a 3 axis stepper motor control system. It used the parallel port on the PC for communications. The last several laptop PCs I purchased have no parallel ports, at all. So I bought some Manhattan (336581) USB to parallel convert cables. I'm attempting to use NI-VISA 3.0 to control the USB converter therefore a parallel port. I'm having some trouble finding the correct VendorID, ProductId, ManufactName, and Model Name. I did manage to create a .inf and then .pnf files from info I received but Measurement&Automation Explorer doesn't find any Usb devices, much less the one I should have created. Once I do find the device, how do I control the IEEE-1284 pins at the 25 sub-d connector? I have the block diagram of USBTMC.vi but I'm confused as how to use output and input similar to the way I used to use "outport" and "inport"in 5.1 etc. Any suggestions how to control parallel I/O using a USB to Parallel converter. Thanks Robert

hi steve, i also facing the problem when using the USB to parallel port to control output. before this i direct use the parallel port (PC) to control, now im adding a usb to parallel port to control the output (LAPTOP). it is using the device that u recommeded can solve the problem ? what is the function node that used in labview ? thanks. sheng
Attachments:
usb to parellel port led testing.jpg ‏1619 KB

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How to control parallel pins I/O thru USB converter

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