How do I control a ZPL label printer via USB

[Lchjxlz]

Can you show me how to install NI-VISA driver to connect USB interface printer, and control 

the printer through the command,thanks

[Lchjxlz]

Hi, Daniel

I faced same issue,I installed the printer windows driver, but can't connect printer to NI MAX,thanks

[Lchjxlz]

Daniel

You mean you have transferred USB to RS232 controller to communicate with printer?can 

you show me how to connect printer through VISA to USB interface,thanks

[rolfk]

You can not connect to a Windows GDI driver through NI VISA! Windows has captured that device and assigned its installed driver and manages all the printing requests through the Windows GDI or optionally XPS API.

As explained here, sending a "raw" print job to a printer has been getting rather hard under Windows 8 and later. You may try his solution explained on that page or look at the source code and use the mentioned .Net component directly.