National Instruments NI-488.2 - Manual (Page 45)

Chapter 4 Developing Your NI-488.2 Application
NI-488.2 User Manual 4-8 ni.com
The language header file defines each Ibsta status bit. You can test for an
Ibsta status bit being set using the bitwise and operator ( & in C/C++). For
example, the Ibsta ERR bit is bit 15 of Ibsta .
To check for an NI-488.2 error, use the following statement after each
NI-488.2 call:
if (Ibsta() & ERR)
printf("NI-488.2 error encountered");
Error Function (Iberr)
If the ERR bit is set in Ibsta , an NI-488.2 error has occurred. When an
error occurs, the error type is specified by Iberr . To check for an NI-488.2
error, use the following statement after each NI-488.2 call:
if (Ibsta() & ERR)
printf("NI-488.2 error %d encountered", Iberr());
Note The value in Iberr() is meaningful as an error only when the ERR bit is set in
Ibsta , indicating that an error has occurred.
For more information about error codes and solutions, refer to Chapter 5,
Debugging Your Application , or Appendix C, Error Codes and Solutions .
CMPL 8 100 dev, brd I/O completed
LOK 7 80 brd Lockout State
REM 6 40 brd Remote State
CIC 5 20 brd Controller-In-Charge
ATN 4 10 brd Attention is asserted
TACS 3 8 brd Talker
LACS 2 4 brd Listener
DTAS 1 2 brd Device Trigger State
DCAS 0 1 brd Device Clear State
Table 4-1. Status Word Layout (Continued)
Mnemonic
Bit
Pos
Hex
Value Type Description