Glossary
BMTW-SVN01F-EN 215
I Internet Protocol (IP)
The protocol within TCP/IP that governs the transmission of data. It has
been adopted by ASHRAE as a means to communicate BACnet over a
network. It allows BACnet to pass through IP devices, such as IP system
routers and over the Internet.
I/O
Input/output.
IRQ
Interrupt request.
L LAN
See Local area network.
LED
See Light emitting diode.
light emitting diode (LED)
A semiconductor diode that emits light when a voltage is applied to it.
Used in an electronic display, such as on a BCU, for diagnostic purposes.
LCP
Lighting control panel.
local area network (LAN)
A communications network linking multiple nodes.
LonTalk
®
An interoperable protocol developed by the Echelon Corporation and
named as a standard by the Electronics Industries Alliance (EIA-709.1).
It is packaged on a Neuron chip.
M modem
A device used to interface the components of a building management sys-
tem or a terminal with a telephone line. A modem translates information
from the building management panel into signals that can be transmitted
over the telephone or other data communication circuits.
µs
Microsecond.
ms
Millisecond.
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