National Instruments NI-488.2 User Manual page 96

Appendix C Error Codes and Solutions
EDVR (0)
Solutions
ECIC (1)
NI-488.2 User Manual for Windows
EDVR is returned when the interface or device name passed to
or the interface index passed to
variable contains an error code. This error occurs when you try to
ibcntl
access an interface or device that is not installed or configured properly.
EDVR is also returned if an invalid unit descriptor is passed to any
traditional NI-488.2 call.
Possible solutions for this error are as follows:
• Use to open a device without specifying its symbolic name.
ibdev
• Use only device or interface names that are configured in the NI-488.2
Configuration utility as parameters to the
• Use the NI-488.2 Troubleshooting Wizard to ensure that each interface
you want to access is working properly, as follows:
1. Select Start»Programs»National Instruments
NI-488.2»Explore GPIB.
2. Select Help»Troubleshooting»NI-488.2 Troubleshooting
Wizard.
The Troubleshooting Wizard tests your GPIB interface and
displays the results.
• Use the unit descriptor returned from
parameter in subsequent traditional NI-488.2 calls. Examine the
variable before the failing function to make sure its value has not been
corrupted.
• For more troubleshooting information, refer to the
EDVR Error Conditions
Troubleshooting and Common
ECIC is returned when one of the following board functions is called while
the interface is not CIC:
• Any device-level traditional NI-488.2 calls that affect the GPIB.
• Any board-level traditional NI-488.2 calls that issue GPIB command
bytes: ,
ibcmd ibcmda
, cannot be accessed. The global
ibdev
ibdev
section in Appendix D,
Questions.
, , and
ibln ibrpp
C-2
ibfind
function.
ibfind
or as the first
ibfind
Troubleshooting
Windows 98/95:
.
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