Ibsic, Ibsic -44 – Measurement Computing GPIB-488 User Manual
Page 57
Chapter 3
GPIB 488.1 Library Reference
3-44
GPIB-488
IBSIC
Asserts IFC (Interface Clear) signal. This re-initializes the GPIB system.
Syntax
C
ibsic (int board)
Parameters
board
is an integer containing the board handle.
Returns
ibsta
will contain a 16-bit status word as described in Appendix B,
.
iberr
will contain an error code, if an error occurred. The
ESAC
error is generated if the
specified GPIB Interface Board is not the system controller.
Usage Notes
This routine can only be used if the specified GPIB board is the system controller. When the
routine is executed, the GPIB interface board asserts the
IFC
(Interface Clear) signal for at
least 100 µsec. This action results in the system controller regaining control of the GPIB (for
example, becoming the Controller-In-Charge). When
IFC
line is asserted, all GPIB interface
functions of the bus devices are reset.
Example
This example resets the GPIB bus associated with the specified GPIB Interface Board and
makes that board Controller-In-Charge.
C
int gpib1;
gpib1 = ibfind("GPIB1");
ibsic (gpib1);