National Instruments GPIB-PC - Manual (Page 105)

BASICA/QuickBASIC GPIB-PC Function Calls Section Four A
GPIB-PC User Manual 4A-30 ©National Instruments Corp.
BASICA/QuickBASIC BASICA/QuickBASIC
IBEOT IBEOT
Purpose: Enable or disable END termination message on write
operations
Format: CALL IBEOT (BD%,V%)
Remarks: BD% specifies a device or an interface board. If V% is non-
zero, the END message is sent automatically with the last
byte of each write operation. If
V% is zero, END is not sent.
IBEOT is needed only to alter the value from the
configuration setting.
The END message is sent when the GPIB EOI signal is
asserted during a data transfer and it is used to identify the
last byte of a data string without having to use an end-of-
string character.
IBEOT is used primarily to send variable
length binary data.
The assignment made by this function remains in effect
until
IBEOT is called again, the IBONL or IBFIND
function is called, or the system is rebooted.
When IBEOT is called and an error does not occur, the
previous value of V% is stored in IBERR% .
Device IBEOT Function:
When BD% specifies a device, the END termination message method
that is selected is used on all device I/O write operations to that device.
Board IBEOT Function:
When BD% specifies an interface board, the method that is selected is
used on all board-level I/O write operations, regardless of what device is
written to.
Refer also to IBEOS and to Table 2.1.