Ibclr – National Instruments GPIB-PC User Manual

Page 94

Section Four A

BASICA/QuickBASIC GPIB-PC Function Calls

©National Instruments Corp.

4A-19

GPIB-PC User Manual

BASICA/QuickBASIC

IBCLR

Purpose:

Clear specified device

Format:

CALL IBCLR (BD%)

Remarks:

BD%

specifies a device.

The

IBCLR

function clears the internal or device functions

of a specified device. On exit, all devices are unaddressed.

IBCLR

calls the board

IBCMD

function to send the

following commands using the designated access board:

•

Listen address of the device;

•

Secondary address of the device, if applicable;

•

Selected Device Clear (SDC); and

•

Untalk (UNT) and Unlisten (UNL)

Other command bytes may be sent as necessary.

Refer to

IBCMD

for additional information. Refer also to

the discussion of device functions and the discussion
clearing the device and clearing the GPIB in Section
Three.

Device Example:

Clear the device

VMTR%

100 CALL IBCLR (VMTR%)