IBRSC
Board-Level
|
Note ibrsc is deprecated. Use ibconfig (IbcSC) instead. |
Purpose
Request or release system control.
Format
C
unsigned long ibrsc (int ud, int v)
Visual Basic
CALL ibrsc (ud%, v%)
or
status% = ilrsc (ud%, v%)
Interactive Control (Usage Notes)
ibrsc v
Input
| ud | Board or device descriptor |
| v | Determines if system control is to be requested or released |
Output
| Function Return | The value of Ibsta |
Description
ibrsc requests or releases the capability to send Interface Clear (IFC) and Remote Enable (REN) messages to devices. If v is zero, the board releases system control, and calls requiring System Controller capability are not allowed. If v is non-zero, calls requiring System Controller capability are subsequently allowed. If no error occurs during the call, Iberr contains the previous System Controller state of the board.
Possible Errors
| EDVR | The NI-488.2 driver is either configured incorrectly or is not properly installed. |
| EHDL | ud is invalid or out of range. |
| ELCK | The requested operation could not be performed because of an existing lock by another process. |
| ENEB | The interface is not installed or is not properly configured. |
| EOIP | Asynchronous I/O is in progress. |