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Electric duct heater / terminal reheat controller · BACnet points list
Neptronic HECB electric duct heater controller BACnet points list
Updated 6 November 2026
The HECB controller runs Neptronic electric duct heaters and connects to BACnet MS/TP. The user guide lists 209 objects: system mode and occupancy, network setpoint and temperature inputs, demand and power limit, heat output and measured power, stage outputs, temperature limits, airflow status, cutout alarms and PID/configuration objects.
This page lists 209 BACnet objects for the Neptronic HECB electric duct heater controller — 114 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Neptronic’s own free documentation, linked below.
- Manufacturer
- Neptronic
- Model
- HECB electric duct heater controller
- Equipment
- Electric duct heater / terminal reheat controller
- Equipment type
- VAV boxes & fan coils
- BACnet objects
- 209 (114 writable)
- Transport
- BACnet MS/TP
- Firmware
- Not stated
- Default device instance
- 153000 + MAC address
- Also known as
- HECB, HEC, Neptronic HECB, electric duct heater controller
Reference only, provided as-is: verify against Neptronic’s current documentation and the live device before use. Not official Neptronic information. Terms of use.
BMS integration notes: Neptronic HECB electric duct heater controller
Set BV.1 SystemMode to Heat and MSV.2 Occupancy, then either write AV.1 SystemDemand (Network control mode) or, in internal control, AV.12 NetworkSetpoint with MSV.102 = Network setpoint and AV.14 NetworkTemp with MSV.101 = Network Temp. Read AV.3 HeatOutput, MSV.1 AirFlowStatus and BV.30 AL_GlobalAlarmMask.
Minimum points to map
The short list most integrators start with — enough to run the unit from a BMS. Map more as the job needs.
| Object | Name | Why | Access |
|---|---|---|---|
| BV 1 | SystemMode | Heat or off | Write |
| MV 2 | Occupancy | Occupied, unoccupied or vacant setpoint | Write |
| AV 1 | SystemDemand | Heating demand, 0-100 % (Network control mode) | Write |
| AV 12 | NetworkSetpoint | Setpoint from the BMS (MSV.102 = Network) | Write |
| AV 8 | PowerDemandLimitInput | Maximum output limit, % | Write |
| AV 14 | NetworkTemp | Temperature from the BMS (MSV.101 = Network) | Write |
| AV 3 | HeatOutput | Actual heat output, % of capacity | Read |
| MV 1 | AirFlowStatus | EAS airflow: no heat, no flow, low, regular | Read |
| BV 30 | AL_GlobalAlarmMask | Any alarm active | Read |
Enable & remote start
BV.1 SystemMode switches the heater between Heat and Off. MSV.101 and MSV.102 select where the control temperature and setpoint come from.
Heartbeat & communication loss
When the setpoint and/or temperature source is Network, AV.105 Cfg_NetworkTimeout (1-15 min) is the time without BMS communication before the controller raises an alarm and turns the system off; AV.15 NetworkDowncounter shows the countdown, so keep writing the network values.
Sensors & values from the BMS
AV.14 NetworkTemp (with MSV.101 = Network Temp) and AV.12 NetworkSetpoint (with MSV.102 = Network setpoint) take BMS values in internal control mode.
Watch out for
- Some objects exist only in certain control modes or with EAS sensors / current transducers fitted.
Neptronic HECB electric duct heater controller BACnet objects
Type: AI, AO, AV, BI, BO, BV, MI/MO/MV (multi-state) · Access: Read read-only, Write writable, Command writable with a priority array.
| Description | States | |||||
|---|---|---|---|---|---|---|
| AI | 1 | AnalogInput | Voltage measured at the analog input | mV | Read | |
| AI | 2 | InputTemp/ExternalTemp | Temperature measured by room sensor or duct sensor | °F/°C | Read | |
| AI | 3 | HeaterSensor1Temp | Temperature measured by EAS heater sensor 1 | °F/°C | Read | |
| AI | 4 | HeaterSensor2Temp | Temperature measured by EAS heater sensor 2 | °F/°C | Read | |
| AI | 5 | SSRTemp | Temperature measured on the solid-state relay | °F/°C | Read | |
| AI | 6 | SupplyTemp | Temperature measured by the duct sensor connected to TS5 input of HEC | °F/°C | Read | |
| AI | 7 | ReturnTemp | Temperature measured by the duct sensor connected to TS4 input of HEC | °F/°C | Read | |
| AI | 8 | OnBoardSetpoint | Setpoint value from the control board's potentiometer | °F/°C | Read | |
| AI | 9 | BoardTemp | Temperature of printed circuit board | °F/°C | Read | |
| AI | 10 | TRLTemp | Room temperature measured by TRL. | °F/°C | Read | |
| AI | 11 | Phase1current | Phase 1 current value | Read | ||
| AI | 12 | Phase2current | Phase 2 current value | Read | ||
| AI | 13 | Phase3current | Phase 3 current value | Read | ||
| AI | 14 | LineFrequency | Reading of line frequency | Read | ||
| AI | 15 | TRLRH | Humidity measure by TRL | % | Read | |
| AI | 200 | AI_TpmDuty | Time pulse modulation duty cycle of analog input | ms | Read | |
| AI | 201 | PneumaticPressure | Pneumatic pressure measured by the external sensor (input signal) | Read | ||
| AI | 202 | DI_TpmDuty | Time pulse modulation duty cycle of digital input | ms | Read | |
| AVmin | 1 | SystemDemand | Actual heating demand | % | Write | |
| AV | 2 | TPMStageOutput | Current Time Pulse Modulated stage output duty cycle in percent | ms | Read | |
| AVmin | 3 | HeatOutput | Actual heat output in % of full capacity | % | Read | |
| AV | 4 | HeatNominalPower | Theoretic demand in kW | Read | ||
| AV | 5 | HeatMeasuredPower | Actual measured power in kW using phase transducers | Read | ||
| AV | 6 | HeaterDeltaTemp | Difference between EAS temperature sensors (AI.3 + AI.4) | °F/°C | Read | |
| AV | 7 | DuctDeltaTemp | Difference between Supply and Discharge temperature sensors (TS4 and TS5) | °F/°C | Read | |
| AVmin | 8 | PowerDemandLimitInput | Programmable maximum system output limit in percent of total capacity | % | Write | |
| AV | 9 | UnoccupiedSetpoint | Setpoint value used during no occupancy | °F/°C | Write | |
| AV | 10 | VacantSetpoint | Setpoint used during vacant mode | °F/°C | Write | |
| AV | 11 | TRLSetpoint | Setpoint value from the TRL | Write | ||
| AVmin | 12 | NetworkSetpoint | Setpoint value coming from network BMS. Available only when MSV.100 = Internal | °F/°C | Write | |
| AV | 13 | ReturnTempShutdownSetpoint | The system turns the unit off when temperature read by the Inlet | °F/°C | Write | |
| AVmin | 14 | NetworkTemp | Temperature value coming from network BMS. Available only when MSV.100 = Internal | °F/°C | Write | |
| AV | 15 | NetworkDowncounter | Countdown of Network timeout | s | Read | |
| AV | 16 | EnergyAuditResult | Result of average kWh (see AV.106) | Read | ||
| AV | 100 | Cfg_ProportionalBand | PID controller proportional band value | °F/°C | Write | |
| AV | 101 | Cfg_IntegralTime | PID controller integral time | s | Write | |
| AV | 102 | Cfg_DifferentialTime | PID controller derivative time | s | Write | |
| AV | 103 | Cfg_TRLSetpointMin | Minimum programmable setpoint value | °F/°C | Write | |
| AV | 104 | Cfg_TRLSetpointMax | Maximum programmable setpoint value | °F/°C | Write | |
| AV | 105 | Cfg_NetworkTimeout | Network timeout before alarm and shutdown, minutes | min | Write | |
| AV | 106 | Cfg_EnergyAuditPeriod | Defines rolling average used to calculate average kWh value | min | Write | |
| AV | 107 | Cfg_FanOnDelay | Delay value to turn on the fan in seconds | s | Write | |
| AV | 108 | Cfg_FanOffDelay | Delay value to turn off the fan in seconds | s | Write | |
| AV | 300 | Cfg_HeatOutputRamp | Heat ramp output | % | Write | |
| AV | 301 | Cfg_DuctTempSetpoint | Duct temperature setpoint | °F/°C | Write | |
| AV | 302 | Cfg_DuctTempCutout | Duct temperature cutout | °F/°C | Write | |
| AV | 303 | Cfg_DuctTempPropBand | PID controller proportional band value for duct temperature | °F/°C | Write | |
| AV | 304 | Cfg_DuctTempIntegralTime | PID controller integral time for duct temperature | s | Write | |
| AV | 305 | Cfg_DuctTempDerivativeTime | PID controller derivative time for duct temperature | s | Write | |
| AV | 306 | Cfg_PowerAlarmThreshold | The % error between the nominal (AV.4) and measured (AV.5) power | % | Write | |
| AV | 307 | Cfg_StageOnDelay | Delay value to turn on a stage in seconds | s | Write | |
| AV | 308 | Cfg_StageOffDelay | Delay value to turn off a stage in seconds | s | Write | |
| AV | 309 | Cfg_PneumaticSignalMin | Pneumatic signal minimum value | Write | ||
| AV | 310 | Cfg_PneumaticSignalMax | Pneumatic signal maximum value | Write | ||
| AV | 311 | Cfg_InputTempOffset | Input temperature offset calibration | °C | Write | |
| AV | 312 | Cfg_HeaterSensor1TempOffset | Heater sensor 1(EAS) temperature offset calibration | °C | Write | |
| AV | 313 | Cfg_HeaterSensor2TempOffset | Heater sensor 3(EAS) temperature offset calibration | °C | Write | |
| AV | 314 | Cfg_SSR TempOffset | SSR temperature offset calibration | °C | Write | |
| AV | 315 | Cfg_SupplyTempOffset | Discharge sensor (TS5) temperature offset calibration | °C | Write | |
| AV | 316 | Cfg_ReturnTempOffset | Supply sensor (TS4) temperature offset calibration | °C | Write | |
| AV | 317 | Cfg_BoardTempOffset | PCB temperature offset calibration | °C | Write | |
| AV | 318 | Cfg_TRLRoomTempOffset | TRL thermostat internal temperature offset calibration | °C | Write | |
| AV | 319 | Cfg_TRLRoomRHOffset | TRL thermostat internal humidity offset calibration | %RH | Write | |
| AO | 1 | FeedbackVoltage | Voltage output read at pin 7 | mV | Write | |
| BO | 1 | FanOutput | Fan output status | Write | 0=Off, 1=On | |
| BI | 1 | ThermalCutout | Status is On when Thermal Input = opened | Read | 0=Open, 1=Close | |
| BI | 2 | AirflowCutout | Status is On when no air flow (AirFlowInput = opened) | Read | 0=Open, 1=Close | |
| BI | 3 | InterlockCutout | Status is On when Interlock Input = opened | Read | 0=Open, 1=Close | |
| BVmin | 1 | SystemMode | Actual system mode | Write | 0=Heat, 1=Off | |
| BV | 2 | Stage1Output | Stage 1 output | Read | 0=Off, 1=On | |
| BV | 3 | Stage2Output | Stage 2 output | Read | 0=Off, 1=On | |
| BV | 4 | Stage3Output | Stage 3 output | Read | 0=Off, 1=On | |
| BV | 5 | Stage4Output | Stage 4 output | Read | 0=Off, 1=On | |
| BV | 6 | Stage5Output | Stage 5 output Number of stages depends on internal configuration | Read | 0=Off, 1=On | |
| BV | 7 | Stage6Output | Stage 6 output | Read | 0=Off, 1=On | |
| BV | 8 | Stage7Output | Stage 7 output | Read | 0=Off, 1=On | |
| BV | 9 | Stage8Output | Stage 8 output | Read | 0=Off, 1=On | |
| BV | 10 | Stage9Output | Stage 9 output | Read | 0=Off, 1=On | |
| BV | 11 | Stage10Output | Stage 10 output | Read | 0=Off, 1=On | |
| BV | 12 | Stage11Output | Stage 11 output | Read | 0=Off, 1=On | |
| BV | 13 | Stage12Output | Stage 12 output | Read | 0=Off, 1=On | |
| BV | 14 | LimitedByHeaterTemp | Power output limited by temperature inside heater enclosure | Read | 0=Off, 1=On | |
| BV | 15 | LimitedBySSRTemp | Power output limited by SSR temperature | Read | 0=Off, 1=On | |
| BV | 16 | LimitedByBoardTemp | Power output limited by PCB temperature | Read | 0=Off, 1=On | |
| BV | 17 | LimitedByDuctTemp | Power output limited by duct discharge temperature (TS5 input) | Read | 0=Off, 1=On | |
| BV | 18 | LimitedByChangoverTemp | Power output limited by changeover temperature | Read | 0=Off, 1=On | |
| BVmin | 30 | AL_GlobalAlarmMask | Active as soon as one or more alarms are present | Read | 0=Off, 1=On | |
| BV | 31 | AL_ThermalCutout | Thermal cutout | Read | 0=Off, 1=On | |
| BV | 32 | AL_AirflowCutout | Air flow cutout | Read | 0=Off, 1=On | |
| BV | 33 | AL_InterlockCutout | Interlock | Read | 0=Off, 1=On | |
| BV | 34 | AL_HeaterTempCutout | Heater temperature cutout | Read | 0=Off, 1=On | |
| BV | 35 | AL_BoardTempCutout | Board temperature cutout | Read | 0=Off, 1=On | |
| BV | 36 | AL_SSRTempCutout | SSR temperature cutout | Read | 0=Off, 1=On | |
| BV | 37 | AL_TRLSensorFailure | TRL thermostat temperature sensor failure | Read | 0=Off, 1=On | |
| BV | 38 | AL_TRLTimeout | Alarm in case of a TRL time- out (no communication) | Read | 0 = Off, 1 = On (I) = Displayed but not used | |
| BV | 39 | AL_NetworkTimeout | Alarm if network does not respond (no communication) | Read | 0 = Off, 1 = On (I) = Displayed but not used | |
| BV | 40 | AL_MeasuredPowerTooHigh | Measured powered is above target value (as per design) | Read | 0=Off, 1=On | |
| BV | 41 | AL_MeasuredPowerTooLow | Measured powered is below target value (as per design) | Read | 0=Off, 1=On | |
| BV | 42 | AL_AirFlowNotDetected | Alarm if no air flow is detected by air flow sensor | Read | 0=Off, 1=On | |
| BV | 44 | AL_InvalidConfguration | Invalid configuration | Read | 0=Off, 1=On | |
| BV | 100 | Cfg_InletTempShutdown | When on, the system turns the unit off whenever the temperature read | Write | 0=Off, 1=On | |
| BV | 101 | Cfg_NetworkTempUnits | Available temperature units when viewed via BACnet | Write | 0=Celsius, 1=Fahrenheit | |
| BV | 102 | Cfg_NetworkcontrolOverride | Overrides DIP switch value to force network control mode | Write | 0=Off, 1=On | |
| BV | 103 | Cfg_TRLTempUnits | Available temperature units when viewed via TRL Thermostat | Write | 0=Celsius, 1=Fahrenheit | |
| BV | 104 | Cfg_TRLSetpointLock | If ON, setpoint cannot be modified via TRL thermostat | Write | 0=Off, 1=On | |
| BV | 105 | Cfg_TRLSystemStatusLock | When on, the heater can't be switched on/off locally | Write | 0=Off, 1=On | |
| BV | 106 | Cfg_DuctSafety | Duct safety | Write | 0=Off, 1=On | |
| BV | 107 | Cfg_AutoPID | Automatic PID | Write | 0=Off, 1=On | |
| BV | 108 | Cfg_TRLDisplayTime | Display time on TRL thermostat | Write | 0=Off, 1=On | |
| BV | 109 | Cfg_TRLTimeFormat | Time format | Write | 0=24h, 1=12h | |
| BV | 230 | AL_HeaterSensor1Failure | Heater temperatures sensor 1 for EAS patent failure status | Read | 0=Off, 1=On | |
| BV | 231 | AL_HeaterSensor2Failure | Heater temperatures sensor 2 for EAS patent failure status | Read | 0=Off, 1=On | |
| BV | 232 | AL_BoardSensorFailure | PCB sensor failure | Read | 0=Off, 1=On | |
| BV | 233 | AL_SSRSensorFailure | SSR sensor failure | Read | 0=Off, 1=On | |
| BV | 234 | AL_InputSensorFailure | Input sensor failure | Read | 0=Off, 1=On | |
| BV | 235 | AL_ReturnSensorFailure | Return temperature sensor failure (TS5) | Read | 0=Off, 1=On | |
| BV | 236 | AL_SupplySensorFailure | Supply temperature sensor failure (TS4) | Read | 0=Off, 1=On | |
| BV | 237 | AL_CurrentSensor0Failure | Phase1 current transducer failure | Read | 0=Off, 1=On | |
| BV | 238 | AL_CurrentSensor1Failure | Phase2 current transducer failure | Read | 0=Off, 1=On | |
| BV | 239 | AL_CurrentSensor2Failure | Phase3 current transducer failure | Read | 0=Off, 1=On | |
| MVmin | 1 | AirFlowStatus | Airflow detected at the heater by the patented EAS (Electronic Air Flow | Read | 1=NoHeat, 2=NoFlow, 3=LowFlow, 4=RegularFlow | |
| MVmin | 2 | Occupancy | Defines setpoint to be used based on set occupancy mode | Write | 1=Occupied, 2=Unoccupied, 3=Vacant | |
| MV | 100 | Cfg_ControlMode | System control mode as per dip switches, factory configuration and user parameters | Read | 1=External, 2=Internal, 3=Neptronic Signal, 4=Network, 5=Pneumatic, 6=TPM, 7=Network | |
| MV | 101 | Cfg_ControlTempSource | Internal control temperature input source | Write | 1=Analog Input, 2=Network Temp, 3=TRL Temp, 4=Supply Temp, 5=Discharge Temp | |
| MV | 102 | Cfg_ControlSetpointSource | Internal control setpoint source | Write | 1=On board setpoint, 2=Network setpoint, 3=TRL setpoint | |
| MV | 103 | Cfg_ObjectListMode | Determines which BACnet objects can be viewed | Write | 1=Integrator, 2=Advanced, 3=Factory | |
| Other | 1 | FirmwareUpdate | Firmware upgrade process available for the controller | Read | ||
| FILE | 1 | FirmwareUpdate | File object of the controller firmware upgrade | Read | ||
| FILE | 2 | BootloaderUpdate | File object of the controller boot loader firmware upgrade | Read | ||
| SCH | 1 | OccupancySchedule | Weekly occupancy schedule to specify which occupancy state is active during specific | Read | ||
| AI | 1001 | ISens0 | Reading of current transducer on phase 1 | Read | ||
| AI | 1002 | ISens1 | Reading of current transducer on phase 2 | Read | ||
| AI | 1003 | ISens2 | Reading of current transducer on phase 3 | Read | ||
| AI | 1004 | MeasuredLineVoltage | Measured line voltage | Read | ||
| AI | 1005 | HeaterSensor1Input | Measured input voltage of EAS heater sensor 1 | mV | Read | |
| AI | 1006 | HeaterSensor2Input | Measured input voltage of EAS heater sensor 2 | mV | Read | |
| AI | 1007 | SSRSensorInput | Measured input voltage of solid-state relay sensor | mV | Read | |
| AI | 1008 | SupplySensorInput | Input voltage of the TS5 duct sensor | mV | Read | |
| AI | 1009 | ReturnSensorInput | Input voltage of the TS4 duct sensor | mV | Read | |
| AI | 1010 | OnBoardSetpointInput | Measured input voltage of the control board's potentiometer | mV | Read | |
| AI | 1011 | BoardSensorInput | Measured input voltage of the PCB's temperature sensor | mV | Read | |
| AI | 1012 | MicroTemp | Measured temperature of the on-board microprocessor | °F/°C | Read | |
| AV | 1000 | HeatOutputRampAuto | Heat output ramp | Read | ||
| AV | 1001 | HeatValidDowncntr | Heat valid countdown | s | Read | |
| AV | 1002 | LastFanActionDowncntr | Last fan action countdown | s | Read | |
| AV | 1003 | LastStageActionDowncntr | Last stage action countdown | s | Read | |
| AV | 1004 | TRLtimeoutDowncntr | TRL timeout countdown | s | Read | |
| AV | 1005 | HeaterSensor1IdleTemp | Idle temperature of EAS heater sensor 1 | °F/°C | Read | |
| AV | 1006 | HeaterSensor2IdleTemp | Idle temperature of EAS heater sensor 2 | °F/°C | Read | |
| AV | 1500 | Cfg_HeaterTempPropBand | PID controller proportional band value for temperature inside the heater enclosure | °F/°C | Write | |
| AV | 1501 | Cfg_HeaterTempIntegralTime | PID controller integral time for temperature inside the heater enclosure | s | Write | |
| AV | 1502 | Cfg_HeaterTempDerivativeTime | PID controller derivative time for temperature inside the heater enclosure | s | Write | |
| AV | 1503 | Cfg_SSRTempPropBand | PID controller proportional band value for SSR temperature | °F/°C | Write | |
| AV | 1504 | Cfg_SSRTempIntegralTime | PID controller integral time for SSR temperature | s | Write | |
| AV | 1505 | Cfg_SSRTempDerivativeTime | PID controller derivative time for SSR temperature | s | Write | |
| AV | 1506 | Cfg_BoardTempPropBand | PID controller proportional band value for board temperature | °F/°C | Write | |
| AV | 1507 | Cfg_BoardTempIntegralTime | PID controller integral time for board temperature | s | Write | |
| AV | 1508 | Cfg_BoardTempDerivativeTime | PID controller derivative time for board temperature | s | Write | |
| AV | 1509 | Cfg_SystemOutputDeadbandLow | Demand low limit dead band range inside which system output is 0% | % | Write | |
| AV | 1510 | Cfg_SystemOutputDeadbandHigh | Deadband at the demand high limit | % | Write | |
| AV | 1511 | Cfg_ISens0offset | Current transducer on phase 1 | °C | Write | |
| AV | 1512 | Cfg_ISens1offset | Current transducer on phase 2, if sensors are available | °C | Write | |
| AV | 1513 | Cfg_ISens2offset | Current transducer on phase 3 | °C | Write | |
| AV | 1514 | Cfg_Sens0Sensitivity | Sensitivity of current transducer on phase 1 | Write | ||
| AV | 1515 | Cfg_Sens1Sensitivity | Sensitivity of current transducer on phase 2 | Write | ||
| AV | 1516 | Cfg_Sens2Sensitivity | Sensitivity of current transducer on phase 3 | Write | ||
| AV | 1517 | Cfg_AutoControlPbandMin | Minimum proportional band for automatic PID of control ramp | °C | Write | |
| AV | 1518 | Cfg_AutoControlPbandMax | Maximum proportional band for automatic PID of control ramp | °C | Write | |
| AV | 1519 | Cfg_AutoControlItimeMin | Minimum integral time for automatic PID of control ramp | s | Write | |
| AV | 1520 | Cfg_AutoControlItimeMax | Maximum integral time for automatic PID of control ramp | s | Write | |
| AV | 1521 | Cfg_HeaterTempSetpoint | Heater temperature setpoint | °F/°C | Write | |
| AV | 1522 | Cfg_HeaterTempCutout | Heater temperature cutout | °F/°C | Write | |
| AV | 1523 | Cfg_AutoHeaterTempPbandMin | Minimum proportional band for automatic PID of temperature inside the heater | °C | Write | |
| AV | 1524 | Cfg_AutoHeaterTempPbandMax | Maximum proportional band for automatic PID of temperature inside the heater | °C | Write | |
| AV | 1525 | Cfg_AutoHeaterTempItimeMin | Minimum integral time for automatic PID of temperature inside the heater | s | Write | |
| AV | 1526 | Cfg_AutoHeaterTempItimeMax | Maximum integral time for automatic PID of temperature inside the heater | s | Write | |
| AV | 1527 | Cfg_SSRTempSetpoint | SSR temperature setpoint | °F/°C | Write | |
| AV | 1528 | Cfg_SSRTempCutout | SSR temperature cutout | °F/°C | Write | |
| AV | 1529 | Cfg_AutoSSRTempPbandMin | Minimum proportional band for automatic PID of SSR temperature | °C | Write | |
| AV | 1530 | Cfg_AutoSSRTempPbandMax | Maximum proportional band for automatic PID of SSR temperature | °C | Write | |
| AV | 1531 | Cfg_ AutoSSRTempItimeMin | Minimum integral time for automatic PID of SSR temperature | s | Write | |
| AV | 1532 | Cfg_ AutoSSRTempItimeMax | Maximum integral time for automatic PID of SSR temperature | s | Write | |
| AV | 1533 | Cfg_BoardTempSetpoint | PC board temperature setpoint | °F/°C | Write | |
| AV | 1534 | Cfg_BoardTempCutout | PC board temperature cutout | °F/°C | Write | |
| AV | 1535 | Cfg_AutoBoardTempPbandMin | Minimum proportional band for automatic PID of PC board temperature | °C | Write | |
| AV | 1536 | Cfg_AutoBoardTempPbandMax | Maximum proportional band for automatic PID of PC board temperature | °C | Write | |
| AV | 1537 | Cfg_AutoBoardTempItimedMin | Minimum integral time for automatic PID of PC board temperature | s | Write | |
| AV | 1538 | Cfg_AutoBoardTempItimeMax | Maximum integral time for automatic PID of PC board temperature | s | Write | |
| AV | 1539 | Cfg_AutoDuctTempPbandMin | Minimum proportional band for automatic PID of duct temperature | °C | Write | |
| AV | 1540 | Cfg_AutoDuctTempPbandMax | Maximum proportional band for automatic PID of duct temperature | °C | Write | |
| AV | 1541 | Cfg_AutoDuctTempItimeMin | Minimum integral time for automatic PID of duct temperature | s | Write | |
| AV | 1542 | Cfg_AutoDuctTempItimeMax | Maximum integral time for automatic PID of duct temperature | s | Write | |
| AV | 1543 | Cfg_HeatOutputRampMin | Minimum value of heat ramp output | % | Write | |
| AV | 1544 | Cfg_HeatOutputRampMax | Maximum value of heat ramp output | % | Write | |
| AV | 1545 | Cfg_HeatOutputRampMinReturnTemp | Minimum value of heat ramp output measured by the duct sensor connected | °F/°C | Write | |
| AV | 1546 | Cfg_HeatOutputRampMaxReturnTemp | Maximum value of heat ramp output measured by the duct sensor connected | °F/°C | Write | |
| AV | 1547 | Cfg_FlowDeltaTempThreshold | Airflow Delta temperature threshold | °F/°C | Write | |
| BV | 1500 | Cfg_AirFlowCutoutDeactivation | Air flow cutout deactivation | Write | 0=Off, 1=On | |
| BV | 1501 | Cfg_HeaterSensorsAvail | Heater sensors available | Write | 0=Off, 1=On | |
| BV | 1502 | Cfg_HeaterSafety | Heater safety | Write | 0=Off, 1=On | |
| BV | 1503 | Cfg_SSRSensorAvail | SSR sensor available | Write | 0=Off, 1=On | |
| BV | 1504 | Cfg_SSRSafety | SSR safety | Write | 0=Off, 1=On | |
| BV | 1505 | Cfg_BoardSafety | Board safety | Write | 0=Off, 1=On | |
| BV | 1506 | Cfg_CurrentSensor0Detected | Current sensor phase 1 detected | Write | 0=Off, 1=On | |
| BV | 1507 | Cfg_CurrentSensor1Detected | Current sensor phase 2 detected | Write | 0=Off, 1=On | |
| BV | 1508 | Cfg_CurrentSensor2Detected | Current sensor phase 2 detected | Write | 0=Off, 1=On | |
| BV | 1509 | Cfg_ReturnSensorDetected | Return sensor detected | Write | 0=Off, 1=On | |
| BV | 1510 | Cfg_SupplySensorDetected | Supply/Inlet sensor detected | Write | 0=Off, 1=On | |
| MV | 1500 | Cfg_GainSelect | Gain selection | Write | 1=88.496, 2=44.742, 3=16.176, 4=8.118, 5=2.035 |
No points match these filters.
Object ID lookup: Neptronic HECB electric duct heater controller point IDs by name
AI1AnalogInputAI2InputTemp/ExternalTempAI3HeaterSensor1TempAI4HeaterSensor2TempAI5SSRTempAI6SupplyTempAI7ReturnTempAI8OnBoardSetpointAI9BoardTempAI10TRLTempAI11Phase1currentAI12Phase2currentAI13Phase3currentAI14LineFrequencyAI15TRLRHAI200AI_TpmDutyAI201PneumaticPressureAI202DI_TpmDutyAV1SystemDemandAV2TPMStageOutputAV3HeatOutputAV4HeatNominalPowerAV5HeatMeasuredPowerAV6HeaterDeltaTempAV7DuctDeltaTempAV8PowerDemandLimitInputAV9UnoccupiedSetpointAV10VacantSetpointAV11TRLSetpointAV12NetworkSetpointAV13ReturnTempShutdownSetpointAV14NetworkTempAV15NetworkDowncounterAV16EnergyAuditResultAV100Cfg_ProportionalBandAV101Cfg_IntegralTimeAV102Cfg_DifferentialTimeAV103Cfg_TRLSetpointMinAV104Cfg_TRLSetpointMaxAV105Cfg_NetworkTimeoutAV106Cfg_EnergyAuditPeriodAV107Cfg_FanOnDelayAV108Cfg_FanOffDelayAV300Cfg_HeatOutputRampAV301Cfg_DuctTempSetpointAV302Cfg_DuctTempCutoutAV303Cfg_DuctTempPropBandAV304Cfg_DuctTempIntegralTimeAV305Cfg_DuctTempDerivativeTimeAV306Cfg_PowerAlarmThresholdAV307Cfg_StageOnDelayAV308Cfg_StageOffDelayAV309Cfg_PneumaticSignalMinAV310Cfg_PneumaticSignalMaxAV311Cfg_InputTempOffsetAV312Cfg_HeaterSensor1TempOffsetAV313Cfg_HeaterSensor2TempOffsetAV314Cfg_SSR TempOffsetAV315Cfg_SupplyTempOffsetAV316Cfg_ReturnTempOffsetAV317Cfg_BoardTempOffsetAV318Cfg_TRLRoomTempOffsetAV319Cfg_TRLRoomRHOffsetAO1FeedbackVoltageBO1FanOutputBI1ThermalCutoutBI2AirflowCutoutBI3InterlockCutoutBV1SystemModeBV2Stage1OutputBV3Stage2OutputBV4Stage3OutputBV5Stage4OutputBV6Stage5OutputBV7Stage6OutputBV8Stage7OutputBV9Stage8OutputBV10Stage9OutputBV11Stage10OutputBV12Stage11OutputBV13Stage12OutputBV14LimitedByHeaterTempBV15LimitedBySSRTempBV16LimitedByBoardTempBV17LimitedByDuctTempBV18LimitedByChangoverTempBV30AL_GlobalAlarmMaskBV31AL_ThermalCutoutBV32AL_AirflowCutoutBV33AL_InterlockCutoutBV34AL_HeaterTempCutoutBV35AL_BoardTempCutoutBV36AL_SSRTempCutoutBV37AL_TRLSensorFailureBV38AL_TRLTimeoutBV39AL_NetworkTimeoutBV40AL_MeasuredPowerTooHighBV41AL_MeasuredPowerTooLowBV42AL_AirFlowNotDetectedBV44AL_InvalidConfgurationBV100Cfg_InletTempShutdownBV101Cfg_NetworkTempUnitsBV102Cfg_NetworkcontrolOverrideBV103Cfg_TRLTempUnitsBV104Cfg_TRLSetpointLockBV105Cfg_TRLSystemStatusLockBV106Cfg_DuctSafetyBV107Cfg_AutoPIDBV108Cfg_TRLDisplayTimeBV109Cfg_TRLTimeFormatBV230AL_HeaterSensor1FailureBV231AL_HeaterSensor2FailureBV232AL_BoardSensorFailureBV233AL_SSRSensorFailureBV234AL_InputSensorFailureBV235AL_ReturnSensorFailureBV236AL_SupplySensorFailureBV237AL_CurrentSensor0FailureBV238AL_CurrentSensor1FailureBV239AL_CurrentSensor2FailureMV1AirFlowStatusMV2OccupancyMV100Cfg_ControlModeMV101Cfg_ControlTempSourceMV102Cfg_ControlSetpointSourceMV103Cfg_ObjectListModeFILE1FirmwareUpdateFILE2BootloaderUpdateSCH1OccupancyScheduleAI1001ISens0AI1002ISens1AI1003ISens2AI1004MeasuredLineVoltageAI1005HeaterSensor1InputAI1006HeaterSensor2InputAI1007SSRSensorInputAI1008SupplySensorInputAI1009ReturnSensorInputAI1010OnBoardSetpointInputAI1011BoardSensorInputAI1012MicroTempAV1000HeatOutputRampAutoAV1001HeatValidDowncntrAV1002LastFanActionDowncntrAV1003LastStageActionDowncntrAV1004TRLtimeoutDowncntrAV1005HeaterSensor1IdleTempAV1006HeaterSensor2IdleTempAV1500Cfg_HeaterTempPropBandAV1501Cfg_HeaterTempIntegralTimeAV1502Cfg_HeaterTempDerivativeTimeAV1503Cfg_SSRTempPropBandAV1504Cfg_SSRTempIntegralTimeAV1505Cfg_SSRTempDerivativeTimeAV1506Cfg_BoardTempPropBandAV1507Cfg_BoardTempIntegralTimeAV1508Cfg_BoardTempDerivativeTimeAV1509Cfg_SystemOutputDeadbandLowAV1510Cfg_SystemOutputDeadbandHighAV1511Cfg_ISens0offsetAV1512Cfg_ISens1offsetAV1513Cfg_ISens2offsetAV1514Cfg_Sens0SensitivityAV1515Cfg_Sens1SensitivityAV1516Cfg_Sens2SensitivityAV1517Cfg_AutoControlPbandMinAV1518Cfg_AutoControlPbandMaxAV1519Cfg_AutoControlItimeMinAV1520Cfg_AutoControlItimeMaxAV1521Cfg_HeaterTempSetpointAV1522Cfg_HeaterTempCutoutAV1523Cfg_AutoHeaterTempPbandMinAV1524Cfg_AutoHeaterTempPbandMaxAV1525Cfg_AutoHeaterTempItimeMinAV1526Cfg_AutoHeaterTempItimeMaxAV1527Cfg_SSRTempSetpointAV1528Cfg_SSRTempCutoutAV1529Cfg_AutoSSRTempPbandMinAV1530Cfg_AutoSSRTempPbandMaxAV1531Cfg_ AutoSSRTempItimeMinAV1532Cfg_ AutoSSRTempItimeMaxAV1533Cfg_BoardTempSetpointAV1534Cfg_BoardTempCutoutAV1535Cfg_AutoBoardTempPbandMinAV1536Cfg_AutoBoardTempPbandMaxAV1537Cfg_AutoBoardTempItimedMinAV1538Cfg_AutoBoardTempItimeMaxAV1539Cfg_AutoDuctTempPbandMinAV1540Cfg_AutoDuctTempPbandMaxAV1541Cfg_AutoDuctTempItimeMinAV1542Cfg_AutoDuctTempItimeMaxAV1543Cfg_HeatOutputRampMinAV1544Cfg_HeatOutputRampMaxAV1545Cfg_HeatOutputRampMinReturnTempAV1546Cfg_HeatOutputRampMaxReturnTempAV1547Cfg_FlowDeltaTempThresholdBV1500Cfg_AirFlowCutoutDeactivationBV1501Cfg_HeaterSensorsAvailBV1502Cfg_HeaterSafetyBV1503Cfg_SSRSensorAvailBV1504Cfg_SSRSafetyBV1505Cfg_BoardSafetyBV1506Cfg_CurrentSensor0DetectedBV1507Cfg_CurrentSensor1DetectedBV1508Cfg_CurrentSensor2DetectedBV1509Cfg_ReturnSensorDetectedBV1510Cfg_SupplySensorDetectedMV1500Cfg_GainSelect
Integration notes
- The guide marks which objects exist in each control mode (external, internal, Neptronic signal, TPM, pneumatic...); MSV.100 shows the active mode.
- MSV.103 Cfg_ObjectListMode (Integrator, Advanced, Factory) changes which objects are visible.
- Footnote numbers printed after some names (for example HeaterDeltaTemp1) are removed here.
- Objects marked "-" or "*" in the W? column are listed as read-only.
Check it against the live device. A points list tells you what the controller can expose; the unit in front of you may differ by firmware or installed options. This list is provided as-is for reference only and may contain mistakes — confirming it before you write, map or commission anything is up to you (terms). Easy BACnet scans a network for BACnet IP devices from an Android phone, reads every object on the HECB electric duct heater controller and exports what it actually has to Excel — free. New to BACnet? Start with what a BACnet points list is and what the object types mean.
Questions about the Neptronic HECB electric duct heater controller
How many BACnet points does the Neptronic HECB electric duct heater controller have?
This list has 209 BACnet objects: 30 analog inputs, 1 analog output, 100 analog values, 3 binary inputs, 1 binary output, 63 binary values, 2 files, 1 schedule, 7 multi-state values, 1 other. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Neptronic HECB electric duct heater controller BACnet points are writable?
114 of the 209 objects accept a write. Points marked Command have a priority array: a write holds until it is released, so release it back to automatic when you are done.
Where is the official Neptronic HECB electric duct heater controller BACnet documentation?
The source is HECB Controller - BACnet User Guide (HECB Controller - BACnet User Guide -240311), revision 2024-03-11, published free by Neptronic at https://www.neptronic.com/Heaters/pdf/2024/HECB%20Controller%20-%20BACnet%20User%20Guide%20-240311.pdf.
What are the minimum BACnet points to integrate the Neptronic HECB electric duct heater controller?
Start with BV 1 SystemMode (Heat or off); MV 2 Occupancy (Occupied, unoccupied or vacant setpoint); AV 1 SystemDemand (Heating demand, 0-100 % (Network control mode)); AV 12 NetworkSetpoint (Setpoint from the BMS (MSV.102 = Network)); AV 8 PowerDemandLimitInput (Maximum output limit, %); AV 14 NetworkTemp (Temperature from the BMS (MSV.101 = Network)); AV 3 HeatOutput (Actual heat output, % of capacity); MV 1 AirFlowStatus (EAS airflow: no heat, no flow, low, regular); BV 30 AL_GlobalAlarmMask (Any alarm active).
How do I enable BMS control of the Neptronic HECB electric duct heater controller?
BV.1 SystemMode switches the heater between Heat and Off. MSV.101 and MSV.102 select where the control temperature and setpoint come from.
Does the Neptronic HECB electric duct heater controller need a BACnet heartbeat or have a communication timeout?
When the setpoint and/or temperature source is Network, AV.105 Cfg_NetworkTimeout (1-15 min) is the time without BMS communication before the controller raises an alarm and turns the system off; AV.15 NetworkDowncounter shows the countdown, so keep writing the network values.
Can the BMS supply sensor values to the Neptronic HECB electric duct heater controller?
AV.14 NetworkTemp (with MSV.101 = Network Temp) and AV.12 NetworkSetpoint (with MSV.102 = Network setpoint) take BMS values in internal control mode.
How do I check these points on the real HECB electric duct heater controller?
Scan the network with a BACnet IP browser such as Easy BACnet, open the device and compare its object list with this table. Anything missing is usually an option that isn't installed or a point that is disabled in the controller's configuration.
More Neptronic BACnet points lists
- Room / indoor air quality controller (temperature, humidity, CO2, VOC)
Neptronic AROB universal room / IAQ controller
Neptronic AROB room controllers measuring temperature, humidity, CO2 and VOC, with 2 analog and 2 binary outputs.
Also known as: AROB, AROB24, Neptronic AROB, IAQ controller - Make-up air unit (electric heat)
Neptronic CMU Compact Make-up Air Unit
Neptronic CMU compact make-up air units with electric heating, EC fan, damper and optional exhaust fan outputs.
Also known as: CMU, Neptronic CMU - Fan coil unit controller
Neptronic EFCB Series Fan Coil Controller
Neptronic EFCB fan coil controllers (24, 120 or 240 Vac, 2 or 4 relays) for 2-pipe and 4-pipe fan coils with TFL/TDF room sensors.
Also known as: EFCB, EFCB10TU2, EFCB10TU4, EFCB11TU2, EFCB11TU4, EFCB12TU2, EFCB12TU4 - Fan coil unit controller
Neptronic EFCB-OE1 Series Fan Coil Controller
Neptronic EFCB-OE1 fan coil controllers (24 or 240 Vac, 0, 2 or 4 relays), an OEM variant of the EFCB series.
Also known as: EFCB-OE1, EFCB10T-OE1, EFCB12T-OE1, EFCB12TU2-OE1, EFCB12TU4-OE1 - VAV terminal unit controller
Neptronic EVCB14N Series VAV Controller
Neptronic EVCB14N networkable VAV controllers with integrated damper actuator, pressure-independent or pressure-dependent, with 0-4 triac outputs.
Also known as: EVCB14N, EVCB14NIT0S, EVCB14NIT2S, EVCB14NIT4S, EVCB14NDT4S, EVCB14NIT0SF, EVCB14NIT4SF - VAV terminal unit controller
Neptronic EVCB14NxT4X VAV Controller (external motor)
Neptronic EVCB14N VAV controllers with four triac outputs that drive an external damper motor, pressure independent (IT4X) or dependent (DT4X).
Also known as: EVCB14NxT4X, EVCB14NIT4X, EVCB14NDT4X - VAV terminal unit controller
Neptronic EVCB44N Series VAV Controller
Neptronic EVCB44N VAV controllers without triac outputs, pressure independent (IT0S) or pressure dependent (DT0S).
Also known as: EVCB44N, EVCB44NIT0S, EVCB44NDT0S - Dual duct VAV terminal controller
Neptronic EVCBM Dual Duct VAV Controller
Neptronic EVCBM master controller used on dual duct terminals, with a second (slave) airflow channel for the other duct.
Also known as: EVCBM, EVCBM Dual Duct, EVCB dual duct - Electric steam humidifier
Neptronic SK300 / SKE (legacy) Steam Humidifier with NEPIC BACnet module
Legacy Neptronic SK300 and SKE electric steam humidifiers fitted with the NEPIC BACnet MS/TP communication module.
Also known as: SK300, SKE, Neptronic SK300, Neptronic SKE, NEPIC, SK300-BACNET, SKE-BACNET - Steam humidifier valve controller
Neptronic SKDESC-xB
Neptronic SKDESC-xB electronic controllers for steam-to-steam / direct steam injection humidifier valves (ESCJx jacketed, ESCMx models).
Also known as: SKDESC, SKDESCxB, ESCJx, ESCMx, Electronic Steam Controller - Electric steam humidifier
Neptronic SKE4
Neptronic SKE4 electric (heating element) steam humidifiers, indoor and outdoor versions.
Also known as: SKE4 electric steam humidifier, SKE4-N, SKE4-E, SKE4 BACnet - Gas-fired steam humidifier
Neptronic SKG4
Neptronic SKG4 gas-fired steam humidifiers with up to four humidifier modules.
Also known as: SKG4 gas fired humidifier, SKG4-N, SKG4-E, SKG4 BACnet - High-pressure atomizing humidifier / cooler
Neptronic SKH4
Neptronic SKH4 high-pressure water atomizing humidifiers and evaporative coolers with up to six zones (A-F).
Also known as: SKH4 high-pressure atomizer, SKH4 BACnet - Reverse osmosis water treatment unit
Neptronic SKRO
Neptronic SKRO reverse osmosis water treatment units feeding humidifiers.
Also known as: SKRO reverse osmosis, SKRO BACnet - Steam-to-steam humidifier
Neptronic SKS4
Neptronic SKS4 steam-to-steam (boiler steam heated) humidifiers.
Also known as: SKS4 steam to steam humidifier, SKS4 BACnet - Evaporative humidifier
Neptronic SKV
Neptronic SKV evaporative (media) humidifiers with up to four modules.
Also known as: SKV evaporative humidifier, SKV BACnet - Evaporative cooler / humidifier
Neptronic SKVF
Neptronic SKVF series evaporative coolers (also used for humidification).
Also known as: SKVF evaporative cooler, SKVF Series, SKVF BACnet - Fan coil / zone thermostat controller
Neptronic TFxB Series Thermostat Controller
Neptronic TFxB24 communicating thermostats for 2-pipe and 4-pipe fan coils and zone heating/cooling, including the humidity (TFHB) and OE variants.
Also known as: TFCB24F3XYZ1, TFCB24F3XY2, TFHB24F3XYZ1, TFHB24F3XYZ2, TFCB24P3-OE1, TFHB24P3-OE1, TFHB24P3-OE2, TFxB24 - Zone thermostat controller (VAV / fan coil)
Neptronic TROB24 thermostat controller
Neptronic TROB24 communicating thermostats with universal inputs, analog outputs and triac (on/off, pulsing or floating) outputs.
Also known as: TROB24, TROB, TROB24T4, Neptronic TROB - Fan coil / zone thermostat controller
Neptronic TSUB universal wall-mount controller
Neptronic TSUB universal wall-mount controllers for fan coils, heat pumps and zone heating/cooling.
Also known as: TSUB, TSUB24, Neptronic TSUB - Fan coil / zone thermostat controller
Neptronic TUCB / TUHB universal controller (TUxB24C6X2)
Neptronic TUCB (cooling/heating) and TUHB (with humidity) universal room controllers, model TUxB24C6X2.
Also known as: TUCB, TUHB, TUxB24C6X2, TUCB24C6X2, TUHB24C6X2 - Fan coil / zone thermostat controller
Neptronic TUUB universal wall-mount controller
Neptronic TUUB universal wall-mount controllers for fan coils, heat pumps, VFDs and zone heating/cooling.
Also known as: TUUB, TUUB24, Neptronic TUUB
Source: HECB Controller - BACnet User Guide · HECB Controller - BACnet User Guide -240311 · rev. 2024-03-11. Object names, instances and units are reproduced as published; descriptions are our own.