Measurement Computing GPIB-488 - Manual (Page 64)

Chapter 3 GPIB 488.1 Library Reference
GPIB-488 3-51 Programming Reference Manual
Example
This example forces your program to wait indefinitely for the specified device to request
service.
C int plotter;
plotter = ibdev (0,1,0,13,1,0);
ibwait (plotter, RQS);