User Guide

BACnet Int egration Guide – DOAS_08.000 Rev 2 Page | 2
Object Variable Description Active Text Inactive Text
Energy Recovery
IV-10*
(Bit 0)
Heat_Wheel_Enable_Digit al_Out put Heat Wheel Enable Digital Out put Active Inactive
IV-10*
(Bit 18)
Wheel_Rotat ion_Alarm Heat Wheel Rotat ion Alarm Alarm Normal
AV-72 Energy_Recovery_Analog_Output Energy Recovery Analog Out put Real (%)
Refrigeration Systems
IV-6*
(Bit 0)
Compr essor _1_Enable_Digit al_Out put Compr essor 1 Enable Digit al Out put Active Inactive
IV-6*
(Bit 1)
Compr essor _2_Enable_Digit al_Out put Compr essor 2 Enable Digit al Out put Active Inactive
IV-6*
(Bit 2)
Compr essor _3_Enable_Digit al_Out put Compr essor 3 Enable Digit al Out put Active Inactive
IV-6*
(Bit 3)
Compr essor _4_Enable_Digit al_Out put Compr essor 4 Enable Digit al Out put Active Inactive
AV-50 HP_Ramp_Capacity Heat Pump Heat ing Ramp Real (%)
AV-53 Hot_Gas_Reheat_Ramp Hot Gas Reheat Ramp Real (%)
AV-80 M odulating_Compressor_Analog_Output _BMS M odulat ing Compressor Analog Out put Real (%)
Chilled Water Systems
AV-68 Chilled_Water_1_Valve_Analog_Output Chilled Wat er 1 Valve Analog Out put Real (%)
Hot W ater Systems
AV-74 Hot_Water_Valve_1_Analog_Out put Hot Water Valve 1 Analog Output Real (%)
IG Furnaces
IV-6*
(Bit 16)
Furnace_1_St age_1_Digital_Out put Furnace 1 Stage 1 Digital Output Active Inactive
IV-6*
(Bit 17)
Furnace_2_St age_1_Digital_Out put Furnace 2 Stage 1 Digital Output Active Inactive
AV-76 M od_Gas_Furnace_1_Analog_Out put M od Gas Fur nace 1 Analog Out put Real (%)
Electric Post-Heat
AV-70 Electric_Heat er_1_Analog_Out put Electric Heat er 1 Analog Out put Real (%)
Electric Pre-Heat
IV-10*
(Bit 1)
PreHeat_Enable_Digit al_Out put PreHeat Enable Digit al Out put Active Inactive
Sensor Values (w hen equipped)
AI-1 Space_Temp_Analog_Input Space Air Temperature Real (°F)
AI-2 Supply_Temp_Analog_Input Supply(discharge) Air Temperature Real (°F)
AI-3 Out side_Air_Temp_Analog_Input Out side Air Temperat ure Real (°F)
AI-4 M ixed_Temp_Analog_Input M ixed Air Temperat ure Real (°F)
AI-5 Cold_Coil_1_Temp_Analog_Input Cold Coil 1 Leaving Air Temperat ure Real (°F)
AI-7 Ret urn_Temp_Analog_Input Ret urn Air Temperat ure Real (°F)
AI-8 Exhaust_Temp_Analog_Input Exhaust Air Temperature Real (°F)
AI-9 Space_RH_Analog_Input Space Air Relative Humidit y Real (% RH)
AI-10 Out side_RH_Analog_Input Out side Air Relative Humidit y Real (% RH)
AI-11 Ret urn_RH_Analog_Input Return Air Relative Humidit y Real (% RH)
AI-12 Ret urn_Duct _St atic_Pressure_Analog_Input Ret urn Duct Stat ic Pressure Real (“ wc)
AI-13 Space_St at ic_Pressure_Analog_Input Space Stat ic Pressure Real (“ wc)
AI-14 Supply_Duct _Static_Pressure_Analog_Input Supply Duct Stat ic Pressure Real (“ w c)
AI-15 Space_CO2_1_Analog_Input Space 1 CO2 ppm Real (ppm)
AI-17 Ret urn_CO2_Analog_Input Ret urn CO2 ppm Real (ppm)
AV-64 Total_Exhaust _Fan_CFM_BM S Tot al Exhaust Fan CFM Real (cfm)
AV-65 Total_Supply_Fan_CFM _BM S Tot al Supply Fan CFM Real (cfm)
AV-66 OAD_CFM _BM S Out door Air Damper CFM Real (cfm)
Active Setpoint s
AV-41 Supply_Temperature_Calculat ed_Set point Active Supply Temperat ure Set point Real (°F)
AV-90 Coil_Temperat ure_Calculat ed_Set point Calculated Coil Leaving Set point Real (°F)
* Please see Binary Tables.
Unpacking Integer Words to Binary Values
Binary values can be combined to create an integer word. By doing this, more information is available to the BM S in a
smaller number of point s and less network traffic. These int eger words need to be "unpacked" once the BM S receives
the value.
To unpack the integer word int o the binary values, the integer needs to be converted to a binary number. The integers
in the program are 32-bit , meaning up to 32 binary values are packed into the integer. Each bit can either be a 0
(Inactive) or a 1 (Active).