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Variable frequency drive (BACnet option board) · BACnet points list
Danfoss Vacon NX OPT-CJ BACnet MS/TP option board BACnet points list
Updated 4 November 2026
OPT-CJ adds BACnet MS/TP to Vacon NX drives (now Danfoss Drives). The object list is Binary Values for drive status, run/stop, direction and fault reset, and Analog Values for speed reference, frequency, current, power, energy, fault code, limits, ramps and raw fieldbus process data and control/status words.
This page lists 71 BACnet objects for the Danfoss Vacon NX OPT-CJ BACnet MS/TP option board — 30 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Danfoss’s own free documentation, linked below.
- Manufacturer
- Danfoss
- Model
- Vacon NX OPT-CJ BACnet MS/TP option board
- Equipment
- Variable frequency drive (BACnet option board)
- Equipment type
- VFDs & pumps
- BACnet objects
- 71 (30 writable)
- Transport
- BACnet MS/TP
- Firmware
- Option board software OPTCJ_10522 (AV 34-39 from OPTCJ_10522V009)
- Default device instance
- 0 = use the unique number read from the drive (shown in the monitor menu)
- Also known as
- OPT-CJ, OPTCJ, NXOPTCJ, Vacon NX BACnet, Vacon NXS, Vacon NXP, Vacon NXL, DPD00901
Reference only, provided as-is: verify against Danfoss’s current documentation and the live device before use. Not official Danfoss information. Terms of use.
BMS integration notes: Danfoss Vacon NX OPT-CJ BACnet MS/TP option board
Install the board in slot D or E, set MAC address, baud rate, instance number and communication time-out in menu M7, and make Fieldbus the active control place. Then command BV 15 run/stop and AV 24 speed reference, and read BV 1, AV 1 and the fault points.
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 15 | Run/Stop CMD | Run/stop command (1 = run) | Command |
| AV 24 | Speed Reference | Speed reference, % of nominal speed | Command |
| BV 17 | Reset Fault | Resets the active fault | Command |
| BV 1 | Run/Stop State | Running status | Read |
| AV 1 | Output Frequency | Output frequency, Hz | Read |
| AV 5 | Motor Current | Motor current, A | Read |
| AV 3 | Load (power) | Motor shaft power, % | Read |
| BV 3 | Fault State | Any active drive fault | Read |
| AV 23 | Active Fault Code | Which fault is active | Read |
Enable & remote start
Select Fieldbus as the active control place on the drive (see the Vacon NX user manual); BV 15 run/stop, BV 16 direction and AV 24 speed reference only work then.
Heartbeat & communication loss
Parameter Comm. time-out (P7.x.1.4, 10-60 s in 10 s steps, default 10 s, 0 = off) raises a fieldbus fault if communication stops. The drive reaction is set by P2.7.22 Response to fieldbus fault: 0 no response, 1 warning, 2 fault with ramp stop, 3 fault with coast stop.
Network setup
- Settings in keypad menu M7 for the board slot: P7.x.1.1 MAC address (1-127, default 1), P7.x.1.2 baud rate (0 auto, 9600 default, 19200, 38400, 76800).
- P7.x.1.3 instance number: 0 (default) uses the unique number read from the drive; any other value becomes the device instance.
- Monitor menu shows good/bad frame counters, actual baud rate, BACnet fault code and the instance number.
- Bus termination with jumper X4 on the last device.
Watch out for
- Duplicate MAC addresses show as bad frames and BACnet fault code 2.
- Commandable objects use the priority array; relinquish them to hand control back.
- AV 0 is a read-only frequency setpoint; command speed through AV 24.
Danfoss Vacon NX OPT-CJ BACnet MS/TP option board 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 | |||||
|---|---|---|---|---|---|---|
| BV | 0 | Ready State | Drive ready | Read | 0=Not Ready, 1=Ready | |
| BVmin | 1 | Run/Stop State | Drive running | Read | 0=Stop, 1=Run | |
| BV | 2 | Fwd/Rev State | Motor rotation direction | Read | 0=Fwd, 1=Rev | |
| BVmin | 3 | Fault State | Fault active | Read | 0=OK, 1=Fault | |
| BV | 4 | Warning State | Warning active | Read | 0=OK, 1=Warning | |
| BV | 5 | At Setpoint | Reference frequency reached | Read | 0=False, 1=True | |
| BV | 6 | At Zero Speed | Motor running at zero speed | Read | 0=False, 1=True | |
| BV | 7 | General 0 | Application-specific bit of the General Status Word | Read | 0/1 | |
| BV | 8 | General 1 | Application-specific bit of the General Status Word | Read | 0/1 | |
| BV | 9 | General 2 | Application-specific bit of the General Status Word | Read | 0/1 | |
| BV | 10 | General 3 | Application-specific bit of the General Status Word | Read | 0/1 | |
| BV | 11 | General 4 | Application-specific bit of the General Status Word | Read | 0/1 | |
| BV | 12 | General 5 | Application-specific bit of the General Status Word | Read | 0/1 | |
| BV | 13 | General 6 | Application-specific bit of the General Status Word | Read | 0/1 | |
| BV | 14 | General 7 | Application-specific bit of the General Status Word | Read | 0/1 | |
| BVmin | 15 | Run/Stop CMD | Start/stop command (fieldbus control active) | Command | 0=Stop, 1=Run | |
| BV | 16 | Fwd/Rev CMD | Direction command (fieldbus control active) | Command | 0=Fwd, 1=Rev | |
| BVmin | 17 | Reset Fault | Reset the active fault | Command | 0, 1=Reset | |
| BV | 18 | FBFixedControlWord Bit_3 | Application-specific bit of the Fixed Control Word | Command | 0/1 | |
| BV | 19 | FBFixedControlWord Bit_4 | Application-specific bit of the Fixed Control Word | Command | 0/1 | |
| BV | 20 | FBFixedControlWord Bit_5 | Application-specific bit of the Fixed Control Word | Command | 0/1 | |
| BV | 21 | FBFixedControlWord Bit_6 | Application-specific bit of the Fixed Control Word | Command | 0/1 | |
| BV | 22 | FBFixedControlWord Bit_7 | Application-specific bit of the Fixed Control Word | Command | 0/1 | |
| BV | 23 | FBFixedControlWord Bit_8 | Application-specific bit of the Fixed Control Word | Command | 0/1 | |
| BV | 24 | FBFixedControlWord Bit_9 | Application-specific bit of the Fixed Control Word | Command | 0/1 | |
| BV | 25 | FBFixedControlWord Bit_10 | Application-specific bit of the Fixed Control Word | Command | 0/1 | |
| BV | 26 | FBFixedControlWord Bit_11 | Application-specific bit of the Fixed Control Word | Command | 0/1 | |
| BV | 27 | FBFixedControlWord Bit_12 | Application-specific bit of the Fixed Control Word | Command | 0/1 | |
| BV | 28 | FBFixedControlWord Bit_13 | Application-specific bit of the Fixed Control Word | Command | 0/1 | |
| BV | 29 | FBFixedControlWord Bit_14 | Application-specific bit of the Fixed Control Word | Command | 0/1 | |
| BV | 30 | FBFixedControlWord Bit_15 | Application-specific bit of the Fixed Control Word | Command | 0/1 | |
| AV | 0 | Frequency Setpoint | Frequency setpoint | Hz | Read | |
| AVmin | 1 | Output Frequency | Output frequency | Hz | Read | |
| AV | 2 | Motor Speed | Motor speed | rpm | Read | |
| AVmin | 3 | Load (power) | Motor shaft power | % | Read | |
| AV | 4 | Kilowatt Hours total | Total energy counter | kWh | Read | |
| AVmin | 5 | Motor Current | Motor current | A | Read | |
| AV | 6 | DC link Voltage | DC link voltage | V | Read | |
| AV | 7 | Motor Voltage | Motor voltage | V | Read | |
| AV | 8 | Unit Temperature | Heatsink temperature (not on NXL) | °C | Read | |
| AV | 9 | Motor Torque | Torque, % of motor nominal | % | Read | |
| AV | 10 | Operating Days | Operating days (resettable) | days | Read | |
| AV | 11 | Operating Hours | Operating hours (resettable) | h | Read | |
| AV | 12 | Kilowatt Hours | Energy counter (resettable) | kWh | Read | |
| AV | 13 | Torque Reference | Torque reference (not on NXL) | % | Read | |
| AV | 14 | Temperature Rise | Calculated motor temperature, 100 % = nominal (not on NXL) | % | Read | |
| AV | 15 | FBProcessDataOut1 | Application-specific process data out | Read | ||
| AV | 16 | FBProcessDataOut2 | Application-specific process data out | Read | ||
| AV | 17 | FBProcessDataOut3 | Application-specific process data out | Read | ||
| AV | 18 | FBProcessDataOut4 | Application-specific process data out | Read | ||
| AV | 19 | FBProcessDataOut5 | Application-specific process data out | Read | ||
| AV | 20 | FBProcessDataOut6 | Application-specific process data out | Read | ||
| AV | 21 | FBProcessDataOut7 | Application-specific process data out | Read | ||
| AV | 22 | FBProcessDataOut8 | Application-specific process data out | Read | ||
| AVmin | 23 | Active Fault Code | Active fault code | Read | ||
| AVmin | 24 | Speed Reference | Speed reference, % of nominal speed | % | Command | |
| AV | 25 | Current Limit | Current limit | A | Write | |
| AV | 26 | Min Frequency | Minimum frequency | Hz | Write | |
| AV | 27 | Maximum Frequency | Maximum frequency | Hz | Write | |
| AV | 28 | Accel Time | Acceleration time | s | Write | |
| AV | 29 | Decel Time | Deceleration time | s | Write | |
| AV | 30 | FBProcessDataIN 1 | Application-specific process data in | Command | ||
| AV | 31 | FBProcessDataIN 2 | Application-specific process data in | Command | ||
| AV | 32 | FBProcessDataIN 3 | Application-specific process data in | Command | ||
| AV | 33 | FBProcessDataIN 4 | Application-specific process data in | Command | ||
| AV | 34 | AnyParam ID | Parameter ID to access through AV 35 | Write | ||
| AV | 35 | AnyParam Value | Value of the parameter selected in AV 34 | Write | ||
| AV | 36 | FBFixedControlWord PDI 0 | Fixed control word (B0 run, B1 direction, B2 fault reset) | Command | ||
| AV | 37 | FBGeneralControlWord PDI 1 | General control word (application specific) | Command | ||
| AV | 38 | FBFixedStatusWord PDO 0 | Fixed status word (B0 ready, B1 run, B3 fault, B4 warning...) | Read | ||
| AV | 39 | FBGeneralStatusWord PDO 1 | General status word (application specific) | Read |
No points match these filters.
Object ID lookup: Danfoss Vacon NX OPT-CJ BACnet MS/TP option board point IDs by name
BV0Ready StateBV1Run/Stop StateBV2Fwd/Rev StateBV3Fault StateBV4Warning StateBV5At SetpointBV6At Zero SpeedBV7General 0BV8General 1BV9General 2BV10General 3BV11General 4BV12General 5BV13General 6BV14General 7BV15Run/Stop CMDBV16Fwd/Rev CMDBV17Reset FaultBV18FBFixedControlWord Bit_3BV19FBFixedControlWord Bit_4BV20FBFixedControlWord Bit_5BV21FBFixedControlWord Bit_6BV22FBFixedControlWord Bit_7BV23FBFixedControlWord Bit_8BV24FBFixedControlWord Bit_9BV25FBFixedControlWord Bit_10BV26FBFixedControlWord Bit_11BV27FBFixedControlWord Bit_12BV28FBFixedControlWord Bit_13BV29FBFixedControlWord Bit_14BV30FBFixedControlWord Bit_15AV0Frequency SetpointAV1Output FrequencyAV2Motor SpeedAV3Load (power)AV4Kilowatt Hours totalAV5Motor CurrentAV6DC link VoltageAV7Motor VoltageAV8Unit TemperatureAV9Motor TorqueAV10Operating DaysAV11Operating HoursAV12Kilowatt HoursAV13Torque ReferenceAV14Temperature RiseAV15FBProcessDataOut1AV16FBProcessDataOut2AV17FBProcessDataOut3AV18FBProcessDataOut4AV19FBProcessDataOut5AV20FBProcessDataOut6AV21FBProcessDataOut7AV22FBProcessDataOut8AV23Active Fault CodeAV24Speed ReferenceAV25Current LimitAV26Min FrequencyAV27Maximum FrequencyAV28Accel TimeAV29Decel TimeAV30FBProcessDataIN 1AV31FBProcessDataIN 2AV32FBProcessDataIN 3AV33FBProcessDataIN 4AV34AnyParam IDAV35AnyParam ValueAV36FBFixedControlWord PDI 0AV37FBGeneralControlWord PDI 1AV38FBFixedStatusWord PDO 0AV39FBGeneralStatusWord PDO 1
Integration notes
- Fieldbus must be the active control place on the drive for BV 15-17 and AV 24 to take effect.
- AV 34-39 (AnyParam and the control/status words) were added in OPT-CJ software OPTCJ_10522V009.
- AV 8, AV 13 and AV 14 are not available on NXL drives.
- BV 7-14, BV 18-30 and the process data AVs are application specific; their meaning depends on the drive application.
- C = commandable (priority array and relinquish default), per the manual.
- Published by Danfoss on its documentation site; the manual is Vacon document DPD00901A.
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 Vacon NX OPT-CJ BACnet MS/TP option board 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 Danfoss Vacon NX OPT-CJ BACnet MS/TP option board
How many BACnet points does the Danfoss Vacon NX OPT-CJ BACnet MS/TP option board have?
This list has 71 BACnet objects: 40 analog values, 31 binary values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Danfoss Vacon NX OPT-CJ BACnet MS/TP option board BACnet points are writable?
30 of the 71 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 Danfoss Vacon NX OPT-CJ BACnet MS/TP option board BACnet documentation?
The source is Vacon NX OPT-CJ BACnet Option Board User Manual (DPD00901A (Danfoss BC361182944770en-000101)), revision 19.01.2012, published free by Danfoss at https://assets.danfoss.com/documents/latest/270807/BC361182944770en-000101.pdf.
What are the minimum BACnet points to integrate the Danfoss Vacon NX OPT-CJ BACnet MS/TP option board?
Start with BV 15 Run/Stop CMD (Run/stop command (1 = run)); AV 24 Speed Reference (Speed reference, % of nominal speed); BV 17 Reset Fault (Resets the active fault); BV 1 Run/Stop State (Running status); AV 1 Output Frequency (Output frequency, Hz); AV 5 Motor Current (Motor current, A); AV 3 Load (power) (Motor shaft power, %); BV 3 Fault State (Any active drive fault); AV 23 Active Fault Code (Which fault is active).
How do I enable BMS control of the Danfoss Vacon NX OPT-CJ BACnet MS/TP option board?
Select Fieldbus as the active control place on the drive (see the Vacon NX user manual); BV 15 run/stop, BV 16 direction and AV 24 speed reference only work then.
Does the Danfoss Vacon NX OPT-CJ BACnet MS/TP option board need a BACnet heartbeat or have a communication timeout?
Parameter Comm. time-out (P7.x.1.4, 10-60 s in 10 s steps, default 10 s, 0 = off) raises a fieldbus fault if communication stops. The drive reaction is set by P2.7.22 Response to fieldbus fault: 0 no response, 1 warning, 2 fault with ramp stop, 3 fault with coast stop.
How do I check these points on the real Vacon NX OPT-CJ BACnet MS/TP option board?
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 Danfoss BACnet points lists
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Danfoss iC7 Series drives with BACnet/IP (OS7BI) or BACnet MS/TP (OS7BN)
Danfoss iC7 Series drives fitted with the BACnet/IP (OS7BI) or BACnet MS/TP (OS7BN) fieldbus option.
Also known as: iC7-Automation, iC7-Hybrid, OS7BI, OS7BN, iC7 BACnet/IP, iC7 BACnet MSTP, 136R0460, 136R0437 - Digital valve actuator (AB-QM pressure independent valves)
Danfoss NovoCon S / M / L / XL digital actuator
Danfoss NovoCon S, M, L and XL digital actuators on AB-QM pressure independent control valves, including NovoCon S with the ChangeOver6 valve.
Also known as: NovoCon, NovoCon S, NovoCon M, NovoCon L, NovoCon XL, AB-QM NovoCon, NovoCon ChangeOver6, AI368140926963 - Thermal energy meter (BACnet MS/TP plug-in module)
Danfoss SonoMeter 40 BACnet MS/TP module
Danfoss SonoMeter 40 ultrasonic heat/cooling energy meters fitted with the BACnet MS/TP module.
Also known as: SonoMeter 40, SonoMeter, Sonometer 40 BACnet, Danfoss BACnet MS/TP base module, AQ404134831215 - Variable frequency drive (HVAC)
Danfoss Vacon 100 / 100 FLOW / 100 HVAC internal BACnet (MS/TP and IP)
Vacon 100, Vacon 100 FLOW and Vacon 100 HVAC AC drives using the built-in RS-485 port (BACnet MS/TP) or the built-in Ethernet port (BACnet IP).
Also known as: Vacon 100, Vacon 100 FLOW, Vacon 100 HVAC, Vacon 100 BACnet, DPD00091, AN361179477697 - Variable frequency drive (water / pump)
Danfoss VLT AQUA Drive FC 202 with BACnet/IP MCA 125
Danfoss VLT AQUA Drive FC 202 fitted with the MCA 125 BACnet/IP option card.
Also known as: FC 202, FC202, VLT AQUA Drive, MCA 125, MCA125, 134B1586, VLT BACnet/IP - Variable frequency drive (HVAC)
Danfoss VLT HVAC Drive FC 102 with BACnet/IP MCA 125
Danfoss VLT HVAC Drive FC 102 fitted with the MCA 125 BACnet/IP option card.
Also known as: FC 102, FC102, VLT HVAC Drive, MCA 125, MCA125, 134B1586, VLT BACnet/IP
Source: Vacon NX OPT-CJ BACnet Option Board User Manual · DPD00901A (Danfoss BC361182944770en-000101) · rev. 19.01.2012. Object names, instances and units are reproduced as published; descriptions are our own.