Edvr (0), Solutions – National Instruments NI-488.2 User Manual
Page 106
Appendix C
Error Codes and Solutions
C-2
ni.com
EDVR (0)
EDVR is returned when the interface or device name passed to
ibfind
,
or the interface index passed to
ibdev
, cannot be accessed. The global
function
Ibcnt
contains an error code. This error occurs when you try
to access an interface or device that is not installed or configured properly.
EDVR is also returned if there is an internal driver error.
Solutions
Possible solutions for this error are as follows:
•
Use
ibdev
to open a device without specifying its symbolic name.
•
Use only device or interface names that are configured in the GPIB
Configuration utility as parameters to the
ibfind
function.
•
Use the NI-488.2 Troubleshooting Utility to ensure that each interface
you want to access is working properly, as follows:
(Windows)
1.
Select Start»Programs»National Instruments»
Measurement & Automation.
2.
Select Help»Troubleshooting»NI-488.2 Troubleshooting
Utility.
(Mac OS X)
Run Applications»National
Instruments»NI-488.2»Troubleshoot.
(Linux)
Enter the following command:
where
is the directory where you chose to install
NI-488.2. The default is
/usr/local
.
EHDL
23
Input handle is invalid
EWIP
26
Wait in progress on specified input handle
ERST
27
The event notification was cancelled due
to a reset of the interface
EPWR
28
The interface lost power
Table C-1. GPIB Error Codes (Continued)
Error
Mnemonic
Value
Meaning