1.5 Open Network Glossary xi
Introduction
<Cautions for maintenance>
1. Follow the instructions in the operation manual.
2. Be sure to perform the maintenance of the system properly, and be sure that the power supply is correct and there is
no electric leakage and other abnormalities, such as abnormal sound, abnormal smell, smoke and etc. Also record all
the maintenance data and keep this record all the time.
1.5 Open Network Glossary
Term Explanation
Ai Unit Connecting adapter that communicates information from environmental sensors (temperature, pressure,
humidity and voltage/electric current) to measurement unit.
ANSI A
merican National Standards Institute
Architecture Refers to the overall design concept of the computer from hardware to software.
It is a systematic layout detailing the connection between the communications network and the devices in an
open network.
ASHRAE A
merican Society of Heating, Refrigeration and Air-conditioning Engineers, Inc.
BACnet B
uilding Automation Control Network
BAS B
uilding Automation System
Users: Building management engineers
Main functions: Facility device status monitoring
Alarm monitoring
Operation management (scheduling)
Automatic control of facilities
Bind Refers to one of the activities included in a test run. Specifically, the logical address is appropriated and
allocated.
Binding Refers to the logical connecting between the network variables that the user wishes to communicate.
It is a setting that enables communication of nvo from one device/machine and nvi from another. This is a job
usually handled by an NI.
BMS B
uilding Management System
Refers to a system for building management (management of electricity charges, equipment and the like).
BASs are configured within BMSs.
Users: Building management engineers
Main functions: Facility equipment ledger management
Repair history management
Maintenance schedule management
Billing data
Well known BMS manufacturers in Japan include NEC, YBS, YJ, Fujitsu, Panasonic and Oki.
Broadcast Refers to the simultaneous transmission of a message to all the devices connected in a system.
Messages involved in the communication between devices connected within a network are simultaneously
sent to all the devices within the network.
Centralized remote
controllers
Devices for collectively programming and managing operation of multiple air conditioners, installed in facility
from one or many locations.
Closed Network Refers to a system configured by only one manufacturer that does not allow access by other manufacturers.
DIII-NET is one such example.
Commission The work conducted when the central monitoring panel is connected to a gateway.
Specifically, the data within the gateway is sent to the central monitoring panel for data confirmation.
Refers to installation of settings in the node after the communication content is set via binding.
Communication Traffic
Volume
Refers to the traffic volume determined according to the number of nodes and network variables and the
frequency of communication between these two.
Configuration Property Refers to parameters related to the behavior of the LON nodes. Configuration properties are set for the
respective nodes by an NI when the network is being installed. They are assigned to the nodes' nonvolatile
memory. Unlike network variables, configuration properties represent semi-fixed variable values.
CRC C
entral Remote Controller
A device that allows remote controllers of up to 64 indoor units, groups or zones (total of 128 indoor units).
The single device provides centralized control to each connected indoor units for functions such as individual/
zone/simultaneous operation start/stop, room temperature control, etc. The device offers the same control
as individual remote controllers.
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