Measurement-computing GPIB-488 Manual de usuario descargar pdf (Pagina 85)

Chapter 4 GPIB 488.2 Library Reference

GPIB-488 4-17 Programming Reference Manual

ResetSys

Initializes GPIB System.

Syntax

C ResetSys(int board, short addresslist[])

Parameters

board is an integer which identifies the GPIB board to be used for this operation. In most

applications, this value is 0.

addresslist is an array of GPIB addresses, terminated by the value NOADDR. These

addresses identify the devices on the system to be reset.

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.

Usage Notes

This routine initializes the GPIB bus and all specified devices. First, the system controller

asserts the REN (Remote Enable) line and then the IFC (Interface Clear) line. This action

unlistens and untalks all of the attached GPIB devices and causes the system controller to

become the Controller-In-Charge (CIC).

The Device Clear (DCL) message is then sent to all of the connected devices. This forces the

devices to return to their default states and ensures that they can receive the Reset (RST)

message. A reset message (RST) is then sent to all of the devices specified by

addresslist.

This resets the devices to specific parameters.

Example

This example resets the GPIB devices connected to GPIB board 0 and assigned GPIB bus

addresses of 6 and 7.

C short addresslist[3] = {6, 7, NOADDR};

ResetSys(0, addresslist);

1 2 ... 80 81 82 83 84 85 86 87 88 89 90 ... 115 116

Sin comentarios

Measurement-computing GPIB-488 Manual de usuario Pagina 85