National Instruments GPIB-PC - page 115

BASICA/QuickBASIC GPIB-PC Function Calls Section Four A
GPIB-PC User Manual 4A-40 ©National Instruments Corp.
BASICA/QuickBASIC BASICA/QuickBASIC
IBONL IBONL
Purpose: Place the device or interface board online or offline
Format: CALL IBONL (BD%,V%)
Remarks: BD% specifies a device or an interface board. If V% is non-
zero, the device or interface board is enabled for operation
(i.e., online). If V% is zero, it is held in a reset, disabled
mode (offline).
Taking a device or interface board offline may be thought
of as disconnecting its GPIB cable from the other devices.
IBONL can also be used to restore the default configuration
settings of a device or interface board. Calling IBONL with
V% non-zero when the device or interface board is already
online simply has the effect of restoring all configuration
settings to their defaults.
Device Examples:
1. Disable the device PLOTTER%.
100 V% = 0
110 CALL IBONL (PLOTTER%,V%)
2. Enable the device PLOTTER% after taking it offline temporarily.
100 BDNAME$ = "PLOTTER" ' Device name
110 'assigned at configuration time.
120 CALL IBFIND (BDNAME$,PLOTTER%)
130 REM IBONL with V% non-zero is
140 REM automatically performed as part of
150 REM IBFIND.
3. Reset the configuration settings of the device PLOTTER% to
their defaults.
100 V% = 1
110 CALL IBONL (PLOTTER%,V%)