45
Appendix C contains a list of all available points that are ac-
cessible via DataPort and DataLink devices.
BACLINK — The BACnet is a data communication protocol
for building management and control networks which estab-
lishes industry-wide standards for the computer exchange of
unit and system data and information.
BAClink is the interface between Carrier’s CCN and a
BACnet Local Area Network (LAN). BAClink responds to re-
quests for data and receives and processes commands and data
from a BACnet device. BAClink allows user to access CCN
status and unit Set Point and Occupancy tables data. BAClink
will also pass selected alarm, alert and return-to-normal mes-
sages from selected CCN controllers to the BACnet network.
BAClink conforms to the ASHRAE Class 3 BACnet
standard (ANSI/ASHRAE Standard 135-1995) and supports
the following BACnet standard application services:
• Read and write properties to supported objects
• Device management services
• Alarm messaging via confirmed message services
• Device re-initialization
• Time synchronization
BAClink supports the following BACnet object types:
• Analog In, Analog Out, Analog Value
• Binary In, Binary Out, Binary Value
• Device Object, Schedule Object
• Multi-State Input, Multi-State Output
• Calendar Object
• Notification Class Object
Appendix D contains the points of information available to
the BACnet network through the BAClink. This table can be
edited into the protocol implementation conformance state-
ment required by the BACnet administrator on the job.
LEGEND
*Constant volume applications only.
Fig. 35 — Space Sensor to Communication Bus Wiring
CCN
—
Carrier Comfort Network
COM
—
Common
COMM
—
Communications
GND
—
Ground
SW
—
Switch
T
—
Terminal
TH
—
Thermostat, Heating
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