Ibsre – National Instruments GPIB-PC User Manual

Page 149

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BASICA/QuickBASIC GPIB-PC Function Calls

Section Four A

GPIB-PC User Manual

4A-74

©National Instruments Corp.

BASICA/QuickBASIC

BASICA/QuickBASIC

IBSRE

IBSRE

Purpose:

Set or clear the Remote Enable line

Format:

CALL IBSRE (BD%,V%)

Remarks:

BD%

specifies an interface board. If

V%

is non-zero the

Remote Enable (REN) signal is asserted. If

V%

is zero the

signal is unasserted.

The

IBSRE

function turns the REN signal on and off. REN

is used by devices to select between local and remote
modes of operation. REN enables the remote mode. A
device does not actually enter remote mode until it
receives its listen address.

The ESAC error occurs if the GPIB-PC is not System
Controller.

When

IBSRE

is called and an error does not occur, the

previous value of V% is stored in

IBERR%

.

Refer also to

IBRSC

and Table 2.1.

Board Examples:

1.

Place the device at listen address &H23 (ASCII #) in remote
mode with local ability to return to local mode.

100 V% = 1 ' Any non-zero value will do.
110 CALL IBSRE (BRD0%,V%)
120 CMD$ = "#"

' LAD

130 CALL IBCMD (BRD0%,CMD$)

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