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6-way pressure-independent control valve · BACnet points list
Belimo 6-way EPIV BACnet points list
Updated 28 October 2026
The 6-way EPIV combines a 6-way changeover valve with a flow sensor, so one coil can be fed from either a heating or a cooling circuit with flow control. On BACnet MS/TP a single AO 1 setpoint covers both sequences: in flow control, 0-33% runs sequence 1 from Vmax1 down to zero, 33-67% is the dead band, and 67-100% runs sequence 2 from zero up to Vmax2. It reports flow, position, active sequence and status.
This page lists 24 BACnet objects for the Belimo 6-way EPIV — 6 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Belimo’s own free documentation, linked below.
- Manufacturer
- Belimo
- Model
- 6-way EPIV
- Equipment
- 6-way pressure-independent control valve
- Equipment type
- Valves & actuators
- BACnet objects
- 24 (6 writable)
- Transport
- BACnet MS/TP
- Firmware
- 6-Way-EPIV V3.0
- Default device instance
- 1
- Also known as
- EP..R-R6+BAC, 6-way characterised control valve, Belimo 6-way valve
- Source document
- BACnet PICS, 6-way EPIV · rev. 2024-09
BMS integration notes: Belimo 6-way EPIV
Set MV 122 SpSource to Bus and command AO 1 SpRel, remembering that in flow control the 0-100% range is split into sequence 1, dead band and sequence 2. Set Vmax1 and Vmax2 once at commissioning. Read AI 19 flow, MI 1 active sequence and BI 101 summary status.
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 |
|---|---|---|---|
| AO 1 | SpRel | Single setpoint for both heating/cooling sequences | Command |
| MV 122 | SpSource | Must be Bus for AO 1 to take effect | Write |
| MI 1 | ActSequence | Shows which sequence is active | Read |
| AI 19 | AbsFlow_UnitSel | Measured flow | Read |
| AI 1 | RelPos | Valve position feedback | Read |
| BI 101 | SummaryStatus | Overall OK / not OK alarm | Read |
Enable & remote start
Write MV 122 SpSource = 2 (Bus); with Analog (default) the valve follows the 0-10 V signal on wire 3. MO 1 Override can force sequence 1 or 2 open, close, or a sequence Vmax.
Network setup
- MS/TP only: baud 9600-76800, default 38400; MAC address 0-127, default 10.
- Default device instance 1.
- Max 32 nodes without repeater; the 120 Ω terminating resistor must be fitted externally.
- Configure with Belimo Assistant 2.
Watch out for
- Writable objects with instance 90 and above are persistent; do not write them on a regular basis.
- In flow control, setpoints 33-67% are a dead band with zero flow.
- Max 5 active COV subscriptions.
Belimo 6-way EPIV 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 | |||||
|---|---|---|---|---|---|---|
| AImin | 1 | RelPos | Relative valve position | % | Read | |
| AI | 2 | AbsPos | Absolute valve position | ° | Read | |
| AI | 5 | SpAnalog_V | Analog setpoint when setpoint source is analog | V | Read | |
| AI | 10 | RelFlow | Flow relative to active Vmax | % | Read | |
| AI | 13 | AbsFlow_gpm | Absolute flow | gpm | Read | |
| AI | 15 | AbsFlow_lh | Absolute flow | l/h | Read | |
| AImin | 19 | AbsFlow_UnitSel | Absolute flow in selected unit | m³/s, m³/h, l/s, l/min, l/h, gpm or cfm (MV 121) | Read | |
| AI | 109 | SpAbsFlow_UnitSel | Active flow setpoint in selected unit | m³/s, m³/h, l/s, l/min, l/h, gpm or cfm (MV 121) | Read | |
| AOmin | 1 | SpRel | Relative setpoint; flow mode splits it into two sequences | % | Command | |
| AV | 99 | Vmax1 | Maximum flow limit, sequence 1 (5-100% of nominal) | % | Write | |
| AV | 100 | Vmax2 | Maximum flow limit, sequence 2 (5-100% of nominal) | % | Write | |
| AV | 102 | Vnom_gpm | Nominal flow (depends on DN size) | gpm | Read | |
| AV | 115 | Vnom_lh | Nominal flow (depends on DN size) | l/h | Read | |
| AV | 119 | Vnom_UnitSel | Nominal flow in selected unit | m³/s, m³/h, l/s, l/min, l/h, gpm or cfm (MV 121) | Read | |
| BImin | 101 | SummaryStatus | Summary of status objects MI 103-106 | Read | Inactive=OK, Active=Not OK | |
| MImin | 1 | ActSequence | Active sequence | Read | 1=Sequence 1, 2=Sequence 2, 3=Dead Band | |
| MI | 103 | StatusSensor | Flow sensor status | Read | 1=OK, 2=Flow sensor not OK | |
| MI | 104 | StatusFlow | Flow status | Read | 1=OK, 2=-, 3=Flow not reached, 4=Flow in closed position | |
| MI | 105 | StatusMedia | Medium status (air bubbles) | Read | 1=OK, 2=Airbubbles | |
| MI | 106 | StatusActuator | Actuator status | Read | 1=OK, 2=Actuator cannot move, 3=Gear disengaged | |
| MO | 1 | Override | Override control of the setpoint | Command | 1=None, 2=Sequence 1 open, 3=Sequence 2 open, 4=Close, 5=Sequence 1 Vmax, 6=Sequence 1 Vmax (printed twice; likely Sequence 2 Vmax) | |
| MV | 100 | ControlMode | Position or flow control | Read | 1=PosCtrl, 2=FlowCtrl | |
| MV | 121 | UnitSelFlow | Engineering unit for selected-unit flow objects | Write | 1=m³/s, 2=m³/h, 3=l/s, 4=l/min, 5=l/h, 6=gpm, 7=cfm | |
| MVmin | 122 | SpSource | Setpoint source: analog wire 3 or bus AO 1 | Write | 1=Analog, 2=Bus |
No points match these filters.
Integration notes
- MV 100 ControlMode has no access marking in the document, so it is listed read-only here; it is likely writable.
- MO 1 state 6 is printed with the same text as state 5.
- MV 121 sets the unit of AI 19, AI 109 and AV 119 (the document refers to AV 119 as AI 119).
- Air bubbles in the system force position control until they clear, regardless of MV 100.
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. Easy BACnet scans a network for BACnet IP devices from an Android phone, reads every object on the 6-way EPIV 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 Belimo 6-way EPIV
How many BACnet points does the Belimo 6-way EPIV have?
This list has 24 BACnet objects: 8 analog inputs, 1 analog output, 5 analog values, 1 binary input, 5 multi-state inputs, 1 multi-state output, 3 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Belimo 6-way EPIV BACnet points are writable?
6 of the 24 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 Belimo 6-way EPIV BACnet documentation?
The source is BACnet PICS, 6-way EPIV, revision 2024-09, published free by Belimo at https://www.belimo.com/mam/general-documents/system_integration/BACnet/belimo_BACnet_Interface-description_6way-EPIV_en-gb.pdf.
What are the minimum BACnet points to integrate the Belimo 6-way EPIV?
Start with AO 1 SpRel (Single setpoint for both heating/cooling sequences); MV 122 SpSource (Must be Bus for AO 1 to take effect); MI 1 ActSequence (Shows which sequence is active); AI 19 AbsFlow_UnitSel (Measured flow); AI 1 RelPos (Valve position feedback); BI 101 SummaryStatus (Overall OK / not OK alarm).
How do I enable BMS control of the Belimo 6-way EPIV?
Write MV 122 SpSource = 2 (Bus); with Analog (default) the valve follows the 0-10 V signal on wire 3. MO 1 Override can force sequence 1 or 2 open, close, or a sequence Vmax.
How do I check these points on the real 6-way EPIV?
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 Belimo BACnet points lists
- Pressure-independent control valve
Belimo 2-way EPIV V4
Belimo 2-way electronic pressure-independent valves (EPIV) version 4.2, DN 15 to 50, BACnet models EP..R2+(K)BAC.
Also known as: EPIV, EP..R2+BAC, EP..R2+KBAC, Electronic Pressure Independent Valve, 2-way EPIV DN 15-50 - Ultrasonic liquid flow sensor
Belimo 22PF Flow Sensor
Belimo 22PF-.. ultrasonic flow sensors for water and glycol pipes, interface version 4.3.0.
Also known as: 22PF, 22PF-.., Belimo ultrasonic flow sensor, Flow Sensor 22PF - Duct / outdoor sensors (temperature, humidity, CO2, VOC, differential pressure)
Belimo Duct and Pipe Sensors (22DTH, 22UTH, 22DTM, 22ADP) BACnet
Belimo BACnet MS/TP sensors: 22DTH duct temperature/humidity, 22UTH outdoor temperature/humidity, 22DTM duct CO2/VOC and 22ADP differential pressure/airflow sensors.
Also known as: 22DTH-..6.., 22UTH-..60X, 22DTM-..6, 22ADP-..6.., 22DTH-16M, 22DTH-56M, 22UTH-160X, 22UTH-560X, 22DTM-16, 22DTM-56, 22ADP-164, 22ADP-164L, 22ADP-56Q, 22ADP-56QB, 22ADP-564L, 22ADP-566L - Pressure-independent control valve with energy meter
Belimo Energy Valve V4
Belimo Energy Valve version 4, DN 15 to 50, BACnet models EV..R2+(K)BAC, EV..R2+MID and EV..R3+BAC.
Also known as: Energy Valve, EV..R2+BAC, EV..R2+KBAC, EV..R2+MID, EV..R3+BAC, Belimo Energy Valve 4 - Valve actuator (Ethernet, IoT)
Belimo IoT Valve Actuators VxM24A-LP1 / VxR24A-LP1 (BACnet IP)
Belimo IoT product range valve actuators VLM/VLR, VNM/VNR, VSM/VSR and VGM/VGR 24A-LP1 with Ethernet and BACnet IP.
Also known as: VLM24A-LP1, VLR24A-LP1, VNM24A-LP1, VNR24A-LP1, VSM24A-LP1, VSR24A-LP1, VGM24A-LP1, VGR24A-LP1, Belimo IoT Product Range - Butterfly valve actuator
Belimo PR..-BAC-.. Butterfly Valve Actuator (BACnet MS/TP)
Belimo PR rotary actuators for butterfly valves in the BACnet MS/TP version (PR..-BAC-..).
Also known as: PR..-BAC-.., Belimo PR actuator, PR BACnet - Room sensor / operating unit
Belimo Room Operating Unit 22RT-5U00
Belimo 22RT...-5U00... room operating units with virtual or ePaper touch display, measuring temperature, humidity and CO2.
Also known as: 22RT, 22RT…-5U00…, Room Operating Unit, ROU, 22RTM-5U00, Belimo room sensor BACnet - Thermal (BTU) energy meter
Belimo Thermal Energy Meter V4
Belimo Thermal Energy Meters version 4, DN 15 to 50 (22PE..-1U.., including MID-certified 22PEM models).
Also known as: TEM, Thermal Energy Meter, 22PE-1U, 22PEM-1UC, 22PE…-1U.., Belimo energy meter - VAV compact controller (actuator with flow sensor)
Belimo VAV-Compact
Belimo VAV-Compact volumetric flow controllers with the BACnet/Modbus interface (..MV-D3-MOD and ..HV24A-MOD).
Also known as: VAV-Compact MOD, ..MV-D3-MOD, ..HV24A-MOD, LMV-D3-MOD, NMV-D3-MOD, SMV-D3-MOD, LHV24A-MOD - VAV / CAV / pressure controller
Belimo VAV-Universal VRU
Belimo VAV-Universal controllers VRU-D3-BAC, VRU-M1-BAC and VRU-M1R-BAC used for VAV/CAV airflow, duct pressure and room pressure control.
Also known as: VAV-Universal, VRU-D3-BAC, VRU-M1-BAC, VRU-M1R-BAC, VRU-..-BAC
Source: BACnet PICS, 6-way EPIV · rev. 2024-09. Object names, instances and units are reproduced as published; descriptions are our own.