VAV T4 RT VAV Zone Controller
BACnet Communication Module User Guide
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Object Table Information
The VAV T4 RT system uses the following BACnet object tables, categorized on the basis of their ID. The type is the BACnet Object type, the instance is the BACnet Object.
Together, the type and instance form the
BACnet Object_Identifier
for an object according to the following C-language algorithm:
object_identifier=(unsigned long)((unsigned long)type<<22)+instance
Analog Input (AI)
Table 4 - Object Table Information: Analog Input (AI)
ID
Name
List
Description
W?
Notes
AI.2
AI2_AuxIn
Integrator
Auxiliary input. Temperature or percentage 0 to 100% (0 to 100% = 0 to 10
Vdc) or ON/OFF set by MSV.5 Cfg_AI2_Type.
Out_of_Service
COV Increment (0.5)
Temp = -40°F to 212°F or -40°C to 100°C
Resolution 0.2°F/0.1°C
% = 0 Volts to 100 Volts, Resolution 0.1 Volt
On/Off = 0, 1
AI.3
RoomTemperature
Integrator Room temperature read by the internal sensor.
Out_of_Service
COV Increment (0.1)
32ºF to 122ºF or 0ºC to 50ºC
Resolution 0.02ºF/0.01ºC
Analog Output (AO)
Table 5 - Object Table Information: Analog Output (AO)
ID
Name
List
Description
W?
Notes
AO.1
AnalogOutput1
Integrator
Status value that represents the modulation percentage of analog output 1
based on demand.
Present Value
COV Increment (0.5) 0% to 100%, Resolution 0.1%
AO.2
AnalogOutput2
Integrator
Status value that represents the modulation percentage of analog output 2
based on demand.
Out_of_Service
COV Increment (0.5) 0% to 100%, Resolution 0.1%
Analog Value (AV)
Table 6 - Object Table Information: Analog Value (AV)
ID
Name
List
Description
W?
Notes
AV.3
Local_AI1_SAT_CO
Integrator Local suply air temperature on analog input 3.
Out_of_Service
COV Increment (0.5)
-40°F to 212°F or -40°C to 100°C
Resolution 0.02ºF/0.01°C
AV.6
OAT
Integrator
Outdoor air temperature from RTC 1010.
COV Increment (0.5)
-40°F to 212°F or -40°C to 100°C
Resolution 0.02ºF/0.01°C
AV.10
Cfg_CalibRoomTemperature
Integrator
Configuration value that represents the calibration of room temperature. Can be
calibrated from the minimum to the maximum temperature.
Present Value
COV Increment
-40°F to 212°F or -40°C to 100°C
Resolution 0.02ºF/0.01°C
