Epwr (28), Solutions – National Instruments NI-488.2 User Manual
Page 113

Appendix C
Error Codes and Solutions
C-12
ni.com
Solutions
Do not call
ibonl
with
ibwait
calls still pending in the driver.
Prevent other applications from calling
ibonl
by locking the interface
with
iblck
.
EPWR (28)
EPWR results when an interface loses power. This often results when the
system goes to and returns from a standby state.
Solutions
Take all handles offline and reinitialize the application.
Quit the application and restart.
Disable standby and hibernate modes on the PC.