usb to parallel port converter to control I/O

[shengko]

hi, i 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 any device that can recommeded and solve the problem ? what is the function node that used in labview ? thanks. sheng

[GerdW]

Hi shengko,

that's a nice picture of the hardware - but how should that help to answer your question?

Most probably that USB device is providing a VCP (VirtualCOMPort) and you need to use VISA functions to communicate with the device. But also probably the manual of that USB device is telling you this...

[shengko]

Hi GerdW,

Thanks for your respond, im using LV2011, now i can detected the usb to parallel port address in MAX and LV program as picture attached. It is possible or not to create a software to control the I/O same as direct parallel port ?

Please advice and thanks.

[GerdW]

WHAT does the manual say about that topic?

[shengko]

sorry, which manual ?

the device (usb to parallel port) i bought from the mall and it didnt provide any manual even the install driver also.

so wat can i try now ? Thanks.

[GerdW]

Hi shengko,

ask the manufacturer for a programming manual - or buy at some more qualified shops...

Sorry, but I think it's just silly to buy hardware just because the connectors fit. When you want to be able to communicate with hardware you should always insist on a good manual and some support...

[shengko]

Hi GerdW,

Thanks for your advice. Any suggestion or recommemdation or not about this device ? Or from your experience, which device that u are recommend to me that can solve the problem (LV control I/O using laptop) ?

Thanks.

[GerdW]

Hi shengko,

when you need to control just 8 DIOs (as indicated by your 8 LEDs) I recommend the USB6008 (or even the cheaper USB6000 sorry it has only 4 DIOs) from NI.

They come with perfect software support (by DAQmx) and good manuals/example VIs...

You might find other simple IO devices from 3rd party suppliers (like the RedLab series) that come with support VIs. They usually start in the 100$ price range...

[shengko]

Hi GerdW,

How about if i need 16 outputs and 10 inputs ? What is the product code ?

Thanks.

[GerdW]

Hi shengko,

when you need to discuss more specifications you are better off with directly calling your local NI sales guy -  or search on NI's websie on your own...