National Instruments NI-488.2 Benutzerhandbuch

© National Instruments Corporation

If the application does not have built-in error detection handling, you can 
use NI Spy to determine which NI-488.2 call is failing.

To start NI Spy, refer to the 

 section earlier in this chapter.

After you have an NI Spy capture file, you can use NI Spy to search for 
failed NI-488.2 calls by searching for calls with the ERR bit set. Once you 
know which NI-488.2 call fails, refer to Appendix B, 

, and Appendix C, 

, for help 

understanding why the NI-488.2 call failed. This information is also 
available in the NI-488.2 online help. For instructions on accessing the 
online help, refer to the 

 section in 

The error variable is meaningful only when the ERR bit in the status 
variable, 

ibsta

, is set. For a detailed description of each error and possible 

solutions, refer to Appendix C, 

Several applications require customized configuration of the NI-488.2 
driver. For example, you might want to terminate reads on a special 
end-of-string character, or you might require secondary addressing. In 
these cases, you can either reconfigure from your application using the 

ibconfig

 function or reconfigure using the NI-488.2 Configuration 

utility. 

National Instruments recommends using 

ibconfig

 to modify the configuration.

If your application uses 

ibconfig

, it works properly regardless of the 

previous configuration. For more information about using 

ibconfig

, refer 

to the description of 

ibconfig

 in the NI-488.2 online help. For 

instructions on accessing the online help, refer to the 

 section in 

.