National Instruments GPIB-PC User Manual
Page 154
Section Four A
BASICA/QuickBASIC GPIB-PC Function Calls
©National Instruments Corp.
4A-79
GPIB-PC User Manual
The
IBTMO
function changes the length of time that the
following functions wait for the embedded I/O operation to
finish or for the specified event to occur before returning
with a timeout indication:
•
IBCMD
,
•
IBRD
,
•
IBRDI
,
•
IBWRT
, or
•
IBWRTI
.
The
IBTMO
function also changes the length of time that
device functions wait for commands to be accepted. If a
device does not accept commands within the time limit,
the EBUS error will be returned.
When
IBTMO
is called and an error does not occur, the
previous value of ist is stored in
IBERR%
.
Device
IBTMO
Function:
When
BD%
specifies a device, the new time limit is used in subsequent
device functions directed to that device.
Board
IBTMO
Function:
When
BD%
specifies a board, the new time limit is used in subsequent
board functions directed to that board.
Refer also to
IBWAIT
and to Table 2.1.