IBPCT
Device-Level
Purpose
Pass control to another GPIB device with Controller capability.
Format
C
unsigned long ibpct (int ud)
Visual Basic
CALL ibpct (ud%)
or
status% = ilpct (ud%)
Interactive Control (Usage Notes)
ibpct
Input
| ud | Device descriptor |
Output
| Function Return | The value of Ibsta |
Description
ibpct passes Controller-in-Charge (CIC) status to the device indicated by ud. The access board automatically unasserts the ATN line and goes to Controller Idle State (CIDS). This function assumes that the device has Controller capability.
Possible Errors
| EARG | ud is valid but does not refer to a device. |
| EBUS | No devices are connected to the GPIB. |
| ECIC | The access board is not CIC. See Device-Level Calls and Bus Management. |
| 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. |