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Rooftop unit controller for zoning systems · BACnet points list

Schneider Electric SEZ7656 Zoning System Rooftop Unit Controller BACnet points list

Updated 7 November 2026

Short answer

The SEZ7656 is the rooftop unit controller of the Schneider Electric SEZ7000 zoning system. It reads PI demands from its SEZ7260 zones over the shared BACnet MS/TP network and stages the rooftop unit, with bypass damper or VFD static pressure control and, on some models, economizer and CO2 functions. No BMS bindings are needed for the system to run.

This page lists 95 BACnet objects for the Schneider Electric SEZ7656 Zoning System Rooftop Unit Controller — 51 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Schneider Electric’s own free documentation, linked below.

Manufacturer
Schneider Electric
Model
SEZ7656 Zoning System Rooftop Unit Controller
Equipment
Rooftop unit controller for zoning systems
Equipment type
Rooftop units, AHUs & DOAS
BACnet objects
95 (51 writable)
Transport
BACnet MS/TP
Firmware
Not stated
Default device instance
76000 + MAC address (e.g. 76063 at MAC 63)
Also known as
SEZ7656, SEZ7656R1045B, SEZ7656H1045B, SEZ7656F1045B, SEZ7656E1045B
Source document
BACnet Integration Manual - Zoning Product Series SEZ7260 & SEZ7656 Series · IG-SE7000-BNETSEZ7XXX-US.EN.4.2013.v1 · rev. 2013-04
Download CSV 95 rows Download EDE B.I.G.-EU JSON Manufacturer PDF ↗ Compare with your scan Download Easy BACnet Mobile App Google Play

Reference only, provided as-is: verify against Schneider Electric’s current documentation and the live device before use. Not official Schneider Electric information. Terms of use.

BMS integration notes: Schneider Electric SEZ7656 Zoning System Rooftop Unit Controller

Integration in brief

Command occupancy with MV 14 and system mode with MV 15 (MV 17 on heat pump models). Read discharge and return air temperatures (AI 1, AI 2), the highest zone demands AV 17 / AV 18, fan status BI 1 and the bypass damper or VFD output AI 4. The BMS can supply outdoor temperature on AV 19.

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.

ObjectNameWhyAccess
MV 14GUI OccupancyBMS occupancy commandWrite
MV 15GUI System ModeSystem mode: off / auto (non heat pump models)Write
MV 17GUI System Mode HPOff / auto / cool / heat / emergency heatWrite
BI 1GUI G FanSupply fan (G) output on / offRead
AI 1GUI Discharge Air TempDischarge air temperatureRead
AI 2GUI Return Air TempReturn air temperatureRead
AV 17GUI Highest PI Heat DemandHighest zone PI heating demandRead
AV 18GUI Highest PI Cool DemandHighest zone PI cooling demandRead
AI 4GUI By-Pass Damper / VFDBypass damper / VFD outputRead
BV 3Sta Comm Lost StatusCommunication status: Down / UpRead

Sensors & values from the BMS

The BMS can write outdoor temperature (AV 19); BV 6 Outdoor Temp Override selects it.

Network setup

Watch out for

Schneider Electric SEZ7656 Zoning System Rooftop Unit 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.

95 of 95 shown
Type
Multi-stateOther
Access
Show
Schneider Electric SEZ7656 Zoning System Rooftop Unit Controller BACnet Points List
DescriptionStates
AImin1GUI Discharge Air TempRange -40°F (-40°C) to 150°F (65°C)°FRead
AI5GUI Analog Heat Outputonly SEZ7656F1045BRead
AImin4GUI By-Pass Damper / VFDRange 0% to 100%%Read
AImin2GUI Return Air TempRange -40°F (-40°C) to 122°F (50°C)°FRead
AI3GUI Static PressureDuct static pressure, 0 to 5 in. WC (0-1250 Pa)in. WCRead
AV1Cfg RTC MACRange 1 to 255, default 4Read
AV21Cfg Device InstanceRange 76000 to 76255Read
AVmin18GUI Highest PI Cool DemandRange 0% to 100%%Read
AVmin17GUI Highest PI Heat DemandRange 0% to 100%%Read
AV40GUI CO2 LevelRange 0 PPM to 2000 PPM; only SEZ7656E1045BppmRead
AV12GUI Current Zone PI Cool DemandRange 0% to 100%%Read
AV11GUI Current Zone PI Heat DemandRange 0% to 100%%Read
AV42GUI Economizer OutputRange 0% to 100%; only SEZ7656E1045B%Read
AV39GUI Fresh Air LevelRange 0 CFM (0 l/s) to 20000 CFM (9440 l/s); only SEZ7656E1045BCFMRead
AV41GUI Highest CO2 ZoneRange 1 to 127; only SEZ7656E1045BRead
AV16GUI Highest PI Cool ZoneRange 0 to 255Read
AV15GUI Highest PI Heat ZoneRange 0 to 255Read
AV28GUI Supply PI Heat DemandRange 0% to 100%; only SEZ7656F1045B%Read
AV14GUI Transferred PI Cool DemandRange 0% to 100%%Read
AV13GUI Transferred PI Heat DemandRange 0% to 100%%Read
AV30Cfg Changeover SetpointRange 14°F to 70°F, default 55°F (13°C); only SEZ7656E1045B°FWrite
AV3Cfg Cooling Lockout TempRange -40°F (-40°C) to 95°F (35°C), default -40°F (-40°C)°FWrite
AV22Cfg DeadbandRange 2°F (1°C) to 4°F (2°C), default 2°F (1°C)°FWrite
AV5Cfg Discharge High Limit SptRange 70°F (21°C) to 150°F (65°C), default 120°F (49°C)°FWrite
AV6Cfg Discharge Low Limit SptRange 35°F (2°C) to 65°F (19°C), default 45°F (7°C)°FWrite
AV33Cfg Economizer Max PositionRange 0% to 100%, default 100%; only SEZ7656E1045B%Write
AV32Cfg Economizer Min PositionRange 0% to 100%, default 0%; only SEZ7656E1045B%Write
AV34Cfg Fresh Air Max RangeFresh air sensor full-scale range, 0 to 20000 CFM, default 0; only SEZ7656E1045BCFMWrite
AV2Cfg Heating Lockout TempRange -15°F (-26°C) to 120°F (49°C), default 120°F (49°C)°FWrite
AV24Cfg High Balance PointRange 34°F(1°C) to 90°F(32°C), default 90°F(32°C); only SEZ7656H1045B°FWrite
AV25Cfg Low Balance PointHeat pump low balance point, default -40°F; only SEZ7656H1045B°FWrite
AV38Cfg Maximum CO2 LevelRange 0 PPM to 2000 PPM, default 1200 PPM; only SEZ7656E1045BppmWrite
AV36Cfg Maximum Fresh AirMaximum fresh air flow, 0 to 20000 CFM, default 0; only SEZ7656E1045BCFMWrite
AV37Cfg Minimum CO2 LevelRange 0 PPM to 2000 PPM, default 800 PPM; only SEZ7656E1045BppmWrite
AV35Cfg Minimum Fresh AirMinimum fresh air flow, 0 to 20000 CFM, default 0; only SEZ7656E1045BCFMWrite
AV26Cfg Minimum Supply Heat SetpointRange 50°F(1°C) to 72°F(32°C), default 64°F(18°C); only SEZ7656F1045B°FWrite
AV31Cfg Mixed Air SetpointRange 50°F(10°C) to 90°F(32°C), default 55°F(13°C); only SEZ7656E1045B°FWrite
AV23Cfg PasswordRange 0 to 1000Write
AV20Cfg Power-up DelayRange 10 Seconds to 120 Seconds, default 30 SecondsWrite
AV7Cfg Return Air Occ CL SptRange 54°F (12°C) to 100°F (37.5°C), default 74°F (24°C)°FWrite
AV9Cfg Return Air Occ HT SptRange 40°F (4.5°C) to 90°F (32°C), default 72°F (22°C)°FWrite
AV8Cfg Return Air Unocc CL SptRange 54°F (12°C) to 100°F (37.5°C), default 74°F (24°C)°FWrite
AV10Cfg Return Air Unocc HT SptRange 40°F (4.5°C) to 90°F (32°C), default 72°F (22°C)°FWrite
AV4Cfg Static Pressure SptStatic pressure setpoint, 0 to 2 in. WC, default 0.8 in. WCin. WCWrite
AV27Cfg Supply Heat Lockout TemperatureRange -15°F(-26°C) to 120°F(49°C), default 32°F(0°C); only SEZ7656F1045B°FWrite
AV19GUI Outdoor TemperatureRange -40°F (-40°C) to 122°F (50°C)°FWrite
BI7GUI AUX Statusonly SEZ7656R1045B/SEZ7656H1045B/SEZ7656F1045BRead0=Off, 1=On
BI6GUI BI Statusonly SEZ7656R1045B/SEZ7656H1045B/SEZ7656F1045BRead0=Not Activated, 1=Activated
BImin1GUI G FanRead0=Off, 1=On
BI4GUI W1 Heatonly SEZ7656R1045B/SEZ7656H1045B/SEZ7656E1045BRead0=Off, 1=On
BI5GUI W2 Heatonly SEZ7656R1045B/SEZ7656E1045BRead0=Off, 1=On
BI16GUI Y1 Compressoronly SEZ7656H1045BRead0=Off, 1=On
BI2GUI Y1 Coolonly SEZ7656R1045B/SEZ7656F1045B/SEZ7656E1045BRead0=Off, 1=On
BI15GUI Y2 Compressoronly SEZ7656H1045BRead0=Off, 1=On
BI3GUI Y2 Coolonly SEZ7656R1045B/SEZ7656F1045B/SEZ7656E1045BRead0=Off, 1=On
BI12Sta Clock AlarmRead0=Off, 1=On
BI9Sta Cooling Lockout StatusRead0=Not Activated, 1=Activated
BI13Sta Discharge Temp AlarmRead0=Off, 1=On
BI11Sta Filter AlarmRead0=Off, 1=On
BI17Sta Fresh Air Alarmonly SEZ7656E1045BRead0=Off, 1=On
BI8Sta Heating Lockout StatusRead0=Not Activated, 1=Activated
BI18Sta High CO2 Alarmonly SEZ7656E1045BRead0=Off, 1=On
BI14Sta Reversing Valve Statusonly SEZ7656H1045BRead0=Off, 1=On
BI10Sta Service AlarmRead0=Off, 1=On
BV7GUI Smart RecoveryRead0=Off, 1=Active
BVmin3Sta Comm Lost StatusRead0=Down, 1=Up
BV12Sta Supply Heat Lockout Statusonly SEZ7656F1045BRead0=Inactive, 1=Active
BV4Cfg Aux Contactonly SEZ7656R1045B/SEZ7656H1045B/SEZ7656F1045BWrite0=N.O., 1=N.C.
BV11Cfg Compressor Interlockonly SEZ7656H1045BWrite0=Off, 1=On
BV9Cfg Emergency Heat Modeonly SEZ7656H1045BWrite0=Off, 1=On
BV5Cfg Fan Purge DelayWrite0=Off, 1=On
BV2Cfg Progressive RecoveryWrite0=Off, 1=Active
BV10Cfg Reversing Valveonly SEZ7656H1045BWrite0=Normally Cool, 1=Normally Heat
BV8Cfg Static Pressure Ctrl TypeWrite0=By-Pass Damper, 1=VFD
BV1Cfg UnitsWrite0=°C / SI Units, 1=°F / Imperial Units
BV6GUI Outdoor Temp OverrideWrite0=Normal, 1=Override
MV1Cfg RTC BaudRead1=9600 ( Bps ), 2=19200 ( Bps ), 3=38400 ( Bps ), 4=76800 ( Bps ), 5=Auto
MV4GUI Zone SequenceRead1=Off / Never used, 2=Cool, 3=Heat
MV11Cfg BI1 Configurationonly SEZ7656R1045B/SEZ7656H1045B/SEZ7656F1045BWrite1=None, 2=RemNSB, 3=RemOVR, 4=Filter, 5=Service
MV18Cfg CO2 Control Typeonly SEZ7656E1045BWrite1=Highest, 2=AV H3, 3=AV H5
MV2Cfg Control TypeWrite1=Highest, 2=AV H3 /Average of Highest 3 Zones, 3=AV H5 /Average of Highest 5 Zones
MV9Cfg Cooling CPHWrite1=3 CPH, 2=4 CPH
MV7Cfg Cooling Stagesonly SEZ7656R1045B/SEZ7656F1045B/SEZ7656E1045BWrite1=1 Stage, 2=2 Stages
MV13Cfg Event DisplayWrite1=2 Events, 2=4 Events
MV16Cfg Heat Pump Stagesonly SEZ7656H1045BWrite1=1 Stage, 2=2 Stages
MV8Cfg Heating CPHonly SEZ7656R1045B/SEZ7656H1045B/SEZ7656E1045BWrite1=3 CPH, 2=4 CPH, 3=5 CPH, 4=6 CPH, 5=7 CPH, 6=8 CPH
MV6Cfg Heating Stagesonly SEZ7656R1045B/SEZ7656E1045BWrite1=1 Stage, 2=2 Stages
MV3Cfg Local Keypad LockoutWrite1=Level 0 / No Lockout, 2=Level 1, 3=Level 2
MV10Cfg Minimum On/Off TimeWrite1=0 minute, 2=1 minute, 3=2 minutes, 4=3 minutes, 5=4 minutes, 6=5 minutes
MV5Cfg Static Pressure Transducer RangeWrite1=0 to 1.5“ of WC, 2=0 to 2.0“ of WC, 3=0 to 3.0“ of WC, 4=0 to 4.0“ of WC, 5=0 to 5.0“ of WC
MV12Cfg Temporary Occupied TimeWrite1=0 hour, 2=1 hour, 3=2 hours, 4=3 hours, 5=4 hours, 6=5 hours, 7=6 hours, 8=7 hours, 9=8 hours, 10=9 hours, 11=10 hours, 12=11 hours, 13=12 hours
MVmin15GUI System Modeonly SEZ7656R1045B/SEZ7656F1045B/SEZ7656E1045BWrite1=Off, 2=Auto
MVmin17GUI System Mode HPonly SEZ7656H1045BWrite1=Off, 2=Auto, 3=Cool, 4=Heat, 5=Emergency Heat
MVmin14GUI OccupancyWrite1=Local Occupancy, 2=Occupied, 3=Unoccupied
SCH1GUI ScheduleRead
Object ID lookup: Schneider Electric SEZ7656 Zoning System Rooftop Unit Controller point IDs by name

Integration notes

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 SEZ7656 Zoning System Rooftop Unit 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 Schneider Electric SEZ7656 Zoning System Rooftop Unit Controller

How many BACnet points does the Schneider Electric SEZ7656 Zoning System Rooftop Unit Controller have?

This list has 95 BACnet objects: 5 analog inputs, 41 analog values, 18 binary inputs, 12 binary values, 1 schedule, 18 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which Schneider Electric SEZ7656 Zoning System Rooftop Unit Controller BACnet points are writable?

51 of the 95 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 Schneider Electric SEZ7656 Zoning System Rooftop Unit Controller BACnet documentation?

The source is BACnet Integration Manual - Zoning Product Series SEZ7260 & SEZ7656 Series (IG-SE7000-BNETSEZ7XXX-US.EN.4.2013.v1), revision 2013-04, published free by Schneider Electric at https://download.se.com/files?p_Doc_Ref=IG-SE7000-BNETSEZ7XXX-A4.

What are the minimum BACnet points to integrate the Schneider Electric SEZ7656 Zoning System Rooftop Unit Controller?

Start with MV 14 GUI Occupancy (BMS occupancy command); MV 15 GUI System Mode (System mode: off / auto (non heat pump models)); MV 17 GUI System Mode HP (Off / auto / cool / heat / emergency heat); BI 1 GUI G Fan (Supply fan (G) output on / off); AI 1 GUI Discharge Air Temp (Discharge air temperature); AI 2 GUI Return Air Temp (Return air temperature); AV 17 GUI Highest PI Heat Demand (Highest zone PI heating demand); AV 18 GUI Highest PI Cool Demand (Highest zone PI cooling demand); AI 4 GUI By-Pass Damper / VFD (Bypass damper / VFD output); BV 3 Sta Comm Lost Status (Communication status: Down / Up).

Can the BMS supply sensor values to the Schneider Electric SEZ7656 Zoning System Rooftop Unit Controller?

The BMS can write outdoor temperature (AV 19); BV 6 Outdoor Temp Override selects it.

How do I check these points on the real SEZ7656 Zoning System Rooftop Unit 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 Schneider Electric BACnet points lists

Source: BACnet Integration Manual - Zoning Product Series SEZ7260 & SEZ7656 Series · IG-SE7000-BNETSEZ7XXX-US.EN.4.2013.v1 · rev. 2013-04. Object names, instances and units are reproduced as published; descriptions are our own.