Measurement-computing GPIB-488 Manuel d'utilisateur télécharger pdf (Page 53)

Chapter 3 GPIB 488.1 Library Reference

Programming Reference Manual 3-40 GPIB-488

IBRSC

Request/Release System Control.

Syntax

C ibrsc (int board, int control)

Parameters

board is an integer containing the board handle.

control indicates whether the GPIB Interface Board is to become the system controller or

to relinquish system control capability. If

control is non-zero, the specified board becomes

the system controller on the GPIB. If

control is 0, the board is not the system controller.

Returns

ibsta will contain a 16-bit status word as described in Appendix B, IBSTA.

iberr will contain an error code, if an error occurred. If no error occurs, iberr equals 1 if

the specified interface board was previously the system controller or 0 if it was not.

Usage Notes

There may only be one system controller in a GPIB system.

Example

This example makes GPIB board 1 the system controller.

C int gpib1;

gpib1 = ibfind ("gpib1");

ibrsc (gpib1, 3);

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 ... 115 116

Pas de commentaire

Measurement-computing GPIB-488 Manuel d'utilisateur Page 53