National Instruments GPIB-PC - Manual (Page 253)

Glossary
©National Instruments Corp. G-5 GPIB-PC User Manual
LANGUAGE INTERFACE - Code that enables an application program
written in a particular language to call handler functions. BIB.M is
the language interface for Interpretive BASIC.
LISTENER - A GPIB device that receives data messages from a Talker.
LLO or LOCAL LOCKOUT - A GPIB command used to tell all devices
that they may or should ignore remote (GPIB) data messages or
local (front panel) controls, depending on whether the device is in
local or remote program mode.
LOW-LEVEL FUNCTION - A rudimentary board or device function that
performs a single operation. See High-Level Function.
MLA or MY LISTEN ADDRESS - A GPIB command used to address a
device to be a Listener. There are 31 of these primary addresses.
MTA or MY TALK ADDRESS - A GPIB command used to address a
device to be a Talker. There are 31 of these primary addresses.
MSA or MY SECONDARY ADDRESS - A GPIB command used to
address a device to be a Listener or a Talker when extended (two
byte) addressing is used. The complete address is a MLA or MTA
address followed by an MSA address. There are 31 of these
secondary addresses for a total of 961 distinct listen or talk
addresses for devices.
NDAC or NOT DATA ACCEPTED - One of the three GPIB handshake
lines. See Handshake.
NRFD or NOT READY FOR DATA - One of the three GPIB handshake
lines. See Handshake.
ON PEN STATEMENT - National Instruments uses this statement to
intercept SRQ interrupts and make them available to user programs.
OPENED DEVICE OR BOARD - One that has been enabled or placed
online by the IBFIND function.
PARALLEL POLL - The process of polling all configured devices at
once and reading a composite poll response. See Serial Poll.
PORT ADDRESS - See I/O Address.