How do I set up VISA resources?

[Zeddicus]

I've built a program to gather data from COM1 on my own computer, and it worked fine. When I transferred it to another computer, I was not able to connect to COM1 using VISA. In fact, no VISA resources were available on the computer, although it certainly does have a serial port. Any suggestions why I can't find the COM1 VISA resource would be welcome...I'm at a loss. Thanks in advance.

Mark

[Dennis_Knutson]

Did you actually install the VISA run-time engine on the second pc? If you did, then the problem might be the use of the VISA alias "Com1". The actual VISA resource name is ASRL1::INSTR. Unless you install the full version of VISA along with MAX, the alias "Com1" is not created. To avoid installing MAX and the full VISA, modify the visconf.ini file on the second pc (or include a modified one in your installation). This is located in VXIpnp\WINnt\NIvisa. Or, you can modify your application to use the actual VISA resource name instead of the alias.