Orion System BACnet Link - Manual (Page 17)

BACnet® Link Interface
Technical Guide
17
CW/HW Object
The information that follows describes the characteristics of the CW/
HW Object. Properties for the CW/HW Object are listed in Table 9.
Object Name
The Object Name for the CW/HW controller is a 15 byte character
string that can be set through the BACnet
® front end.
Object Type
The Object Type of the CW/HW controller is CwHw or 259.
Object Instance Number
The Instance Number of the CW/HW Object is determined by two vari-
able values. The first variable is the loop address setting on the BAC-
net
® Link for the specific loop the CW/HW controller resides on and
the second is the CW/HW controller address. The BACnet ® Link loop
address can be either 0, 1, 2 or 3. See Figure 3 at the front of this
manual for detailed information on the BACnet
® Link loop address
jumper settings.
The second variable value used to calculate the Object Instance number
is the CW/HW controller address and is determined by the address switch
settings on the CW/HW controller. Valid address settings are 1 through
16.
See Table 10 at the end of this chapter for complete Object Instance
Number calculation information
Object Properties
The information and tables that follow detail the properties and prop-
erty identifiers for the CW/HW Object.
Object Properties For The CW/HW Controller
Property Name Property Data Type
Property
Identifier
Read
Or
Write
Alarm_Status CwHwAlarmBits 1024 R/O
Applilcation_Software_Version Unsigned 11 R/O
CO2_Setpoint Real 1094 R/O
Cold_Water_Position Real 1088 R/O
Control_Status CwHwControlBits 1025 R/O
Control_Temperature Real 1028 R/O
Cooling_Setpoint Real 1027 R/O
Duct_Static_Pressure Real 1031 R/O
Duct_Static_Setpoint Real 1090 R/W
Economizer_Position Real 1032 R/O
Fan_Speed_Unit BACnetEngineeringUnits 1083 R/O
Hcw_Configuration HcwConfigBits 1089 R./W
Heating_Setpoint Real 1037 R/O
Hot_Water_Position Real 1087 R/O
Humidity_Unit BACnetEngineeringUnits 1084 R/O
Min_Outside_Air_Setpoint Real 1091 R/W
Object_Identifier BACnetObjectIdentifier 75 R/O
Object_Name CharacterString 77 R/W
Object_Type WattBacObjectTypes 79 R/O
Occupied_Cooling_Setpoint Unsigned 1039 R/W
Occupied_Heating_Setpoint Unsigned 1040 R/W
Outdoor_Air_Humidity Real 1050 R/O
Outdoor_Air_Sensor_Offset Real 1051 R/W
Outdoor_Air_Temperature Real 1052 R/O
Outdoor_Air_Wetbulb Real 1053 R/O
Position_Unit BACnetEngineeringUnits 1085 R/O
Relays CwHwRelayBits 1055 R/O
Relief_Pressure Real 1056 R/O
Relief_Pressure_Setpoint Real 1092 R/W
Return_Air_CO2_Level Real 1093 R/O
Return_Air_Sensor_Offset Real 1058 R/W
Return_Air_Temperature Real 1057 R/O
Schedule_Force WattBacScheduleState 1059 R/W
Space_Sensor_Offset Real 1063 R/W
Space_Temperature Real 1064 R/O
Staging_Deadband Integer 1067 R/W
Supply_Air_Cooling_Setpoint Unsigned 1068 R/W
Supply_Air_Heating_Setpoint Unsigned 1069 R/W
Supply_Air_Sensor_Offset Real 1071 R/W
Supply_Air_Temperature Real 1073 R/O
Temperature_Demand Real 1074 R/O
Temperature_Unit BACnetEngineeringUnits 1086 R/O
Unoccupied_Coolting_Setpoint Unsigned 1075 R/W
Unoccupied_Heating_Setpoint Unsigned 1076 R/W
Vfd_Blower_Fan Real 1077 R/O
Vfd_Exhaust_Fan Real 1078 R/O
Warm_Up_Setpoint Unsigned 1079 R/W
Wetbulb_Setpoint Unsigned 1080 R/W
Table 9: CW/HW Object Properties