National Instruments NI-488.2 Benutzerhandbuch

© National Instruments Corporation

In this example, the addressing command bytes could not be transmitted to 
the device. This indicates that either the GPIB device is powered off or the 
GPIB cable is disconnected. 

For a detailed list of the error codes and their meanings, refer to Chapter 4, 

When an I/O function completes, the Interactive Control utility displays the 
actual number of bytes sent or received, regardless of the existence of an 
error condition. 

If one of the addresses in an address list is invalid, then the error is EARG 
and the Interactive Control utility displays the index of the invalid address 
as the count.

The count has a different meaning depending on which NI-488.2 call is 
made. For the correct interpretation of the count return, refer to the function 
descriptions in the NI-488.2 online help. For instructions on accessing the 
online help, refer to the 

 section in