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Prodigy M3 BACnet Module

Rooftop unit controller BACnet module · BACnet points list

Lennox Prodigy M3 BACnet Module BACnet points list

Updated 4 November 2026

Short answer

The M3 BACnet module plugs onto a Lennox Prodigy M3 rooftop unit controller and exposes it as a BACnet MS/TP device (BTL listed, B-ASC). The BAS drives the unit by writing Analog Outputs (mode, occupancy, setpoints, enables) and reads status from Analog Inputs; occupied/unoccupied setpoints live in Analog Values. The device instance defaults to the MS/TP MAC address. The module expects regular writes from the BAS; if they stop, it times out and falls back to its local control mode.

This page lists 83 BACnet objects for the Lennox Prodigy M3 BACnet Module — 33 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Lennox’s own free documentation, linked below.

Manufacturer: Lennox
Model: Prodigy M3 BACnet Module
Equipment: Rooftop unit controller BACnet module
Equipment type: Rooftop units, AHUs & DOAS
BACnet objects: 83 (33 writable)
Transport: BACnet MS/TP
Firmware: Not stated
Default device instance: Same as MS/TP MAC address
Also known as: M3 BACnet Module, BM2, Prodigy M3, Lennox_M3, Prodigy 2.0 BACnet, 1404-L4, Prodigy M2, M2 BACnet Module, 0926-L11
Source document: M3 BACnet Module (Unit Information) · Corp 1404-L4 (450402) · rev. 2018-10

Download CSV 83 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 Lennox’s current documentation and the live device before use. Not official Lennox information. Terms of use.

BMS integration notes: Lennox Prodigy M3 BACnet Module

Integration in brief

Enable the BACnet module in the M3 setup wizard and set the MAC address, baud and Control Mode. In Room Sensor mode the BMS writes occupancy (AO104) and setpoints (AO109 or AV130-133), and can supply space temperature on AO113. In Network Thermostat mode it sends heat/cool/fan demands on AO101 instead. The M3 does not store commands, so every control point in use must be rewritten on a schedule and after every controller reset.

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 104	Occupancy Scheduler Control	0 = occupied, 1-255 = unoccupied; rewrite every 7 min	Command
AO 101	Application Mode Control	Mode or direct demand command	Command
AV 130	Heating Occupied Setpoint	Occupied heating setpoint, 40-95 °F	Write
AV 131	Cooling Occupied Setpoint	Occupied cooling setpoint, 40-95 °F	Write
AV 132	Heating Unoccupied Setpoint	Unoccupied heating setpoint, 40-95 °F	Write
AV 133	Cooling Unoccupied Setpoint	Unoccupied cooling setpoint, 40-95 °F	Write
AI 232	Unit Status	HVAC state code: 0 idle, 1 heat, 3 cool, 6 off, 9 fan	Read
AI 239	Space Temperature	Space temperature in use	Read
AI 253	Current Error	Active alarm code	Read

Enable & remote start

At the M3: SETUP > INSTALL wizard, set Configuration ID 1 position 5 to B to enable the BACnet module. Then SETUP > NETWORK INTEGRATION > BACNET to set the address, baud and CONTROL MODE (Monitor Only, Room Sensor, Network Thermostat, Zone or Remote). In Monitor Only the unit ignores network setpoints and mode demands. No occupancy jumper is needed for Zone/Remote modes.

Heartbeat & communication loss

Network space temperature (AO113) and space RH/CO2 must be rewritten at least every 5 minutes (2-minute interval recommended), or an alarm is raised; some of these alarms only clear with a local reset. AO101 (network thermostat demand), AO109, AV130-133 and AO104 (when not using setpoint control) must be rewritten within 15 minutes (7-minute interval recommended). Without network sensor data for 5 minutes the unit shows Alarm 73. In Room Sensor mode with BACnet setpoints, 15 minutes with no application-level BACnet traffic makes the RTU reset. In Network Thermostat mode, 15 minutes without demands switches it to its backup mode. After losing network data the unit defaults to occupied (Parameter 225 changes this).

Sensors & values from the BMS

Space temperature goes to AO113 (Space Temperature Input) when CONTROL MODE = ROOM SENSOR with network TEMPERATURE = YES. Space RH and CO2 are written to the proprietary space air object properties 536 and 537. Before network sensor data arrives the unit idles up to 5 minutes (Alarm 110), then enters backup sensor mode (Alarm 93). The points list has no network outdoor-air-temperature input.

Network setup

Default device instance (Object_Identifier) equals the MS/TP MAC address; change it from the BACnet front end.
Default object name is Lennox_M3_ followed by the MAC address.
Baud is selectable 9.6k, 19.2k, 38.4k or 76.8k; default 38.4k. Max_Master defaults to 127 and Max_Info_Frames to 1.
Use consecutive MAC addresses starting at 1, and set Max_Master to the highest MAC on the trunk.
Lennox recommends no repeaters and, above 9.6k baud, no more than 20 Lennox units and 30 devices per router.

Watch out for

Lennox does not support BACnet COV; poll instead, no faster than every 2 minutes per point.
Commands are not stored: rewrite all control points after every M3 reset.
Use ReadPropertyMultiple when reading many analog objects.
AV134-AV140 airflow targets only work with SmartAirflow.
AI200-AI207 (IMC Version) are legacy and not recommended for new jobs.

Lennox Prodigy M3 BACnet Module 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.

83 of 83 shown

Type

Access

Units

Show

Lennox Prodigy M3 BACnet Module BACnet Points List
			Description			States
AOmin	101	Application Mode Control	Unit mode, fan, exhaust and stage command (coded)		Command	0=Auto; 1=Heat; 3=Cool; 6=Off; 9=Fan only; 208=Fan auto; 209=Fan on; 216-222=Power exhaust commands; 224-236=Direct stage commands; 254=Reset; 255=Null (Auto)
AO	102	Outdoor Air Min Pos Control	Range 0 to 255	%	Command
AO	103	Occupancy Override Control	Range 0 to 255		Command	0=Occupied; 1=Unoccupied; 2=Refresh occupied override timer
AOmin	104	Occupancy Scheduler Control	Range 0 to 255		Command
AO	107	Occupancy Sensor Input	Range 0 to 255		Command	0=Sensor sees occupied; 1=Sensor sees unoccupied
AO	108	Space Dehumidification Setpoint	Range 0 to 100	%	Command
AO	109	Temperature Setpoint (abs)	Range 36.25 to 100	°F	Command
AO	110	Temperature Setpoint Offset	Range -32 to 31.75	°F	Command
AO	113	Space Temperature Input	Range 36.25 to 100	°F	Command
AO	114	Emergency Override Control	Range 0 to 255		Command
AO	115	Compressor Enable Control	Range 0 to 255		Command
AO	117	Primary Heat Enable Control	Range 0 to 255		Command
AO	119	Auxiliary Heat Enable Control	Range 0 to 255		Command
AO	123	Duct Static Setpoint	Range 0 to 5	in. w.c.	Command
AO	124	Building Static Setpoint	Range -0.5 to 0.5	in. w.c.	Command
AO	125	Discharge Air Cooling Setpoint	Range -9,40-100	°F	Command
AO	126	Discharge Air Heating Setpoint	Range -9,60-140	°F	Command
AO	127	Supply Fan Capacity Input	Range 33 to 255	%	Command
AO	128	Exhaust Fan Capacity Input	Range 33 to 255	%	Command
AO	129	Set Economizer Outdoor Air Suitable	Range 0 to 255		Command	0=Economizer disable; 1=Economizer enable
AI	198	Mac Address	Range 0 - 127		Read
AI	199	IMC Address	Range 1-31		Read
AI	200	IMC Version[4]	Range 0 - 127; legacy, not for new installs		Read
AI	201	IMC Version[5]	Range 0 - 127; legacy, not for new installs		Read
AI	202	IMC Version[6]	Range 0 - 127; legacy, not for new installs		Read
AI	203	IMC Version[7]	Range 0 - 127; legacy, not for new installs		Read
AI	204	IMC Version[8]	Range 0 - 127; legacy, not for new installs		Read
AI	205	IMC Version[9]	Range 0 - 127; legacy, not for new installs		Read
AI	206	IMC Version[10]	Range 0 - 127; legacy, not for new installs		Read
AI	207	IMC Version[11]	Range 0 - 127; legacy, not for new installs		Read
AI	231	Unit ID	Range 0 - 127		Read
AImin	232	Unit Status	Range 0 - 255		Read
AImin	239	Space Temperature	Range 63.75 - 100.00	°F	Read
AI	240	Discharge Air Temperature	Range -8.7 - 164.4	°F	Read
AI	241	Effective Occupancy	Range 0 - 2		Read	0=Occupied; 1=Unoccupied; 2=Occupied (timed override)
AI	242	Local Outside Air Temperature	Range -30.6 - 131.6	°F	Read
AI	243	Local Space Temperature	Range 63.75 - 100.00	°F	Read
AI	244	Outside Air Damper	Range 0 - 100, 255	%	Read
AI	245	Heat Primary	Range 0 - 100	%	Read
AI	246	Heat Secondary	Range 0 - 100	%	Read
AI	247	Cool Primary	Range 0 - 100	%	Read
AI	248	Economizer Enabled	Range 0, 1, 255	%	Read	0=Disabled; 1=Enabled (OA suitable); 255=No economizer
AI	250	Supply Fan Status	Range 0 - 100	%	Read
AI	252	Space Temperature Set Point (Effective)	Range 40.0 - 95.0	°F	Read
AImin	253	Current Error	Range 0 - 255		Read
AI	254	Error Pointer	Range 0 - 83		Read
AI	255	Most recent Error 1	Range 1 - 255		Read
AI	256	Most recent Error 2	Range 1 - 255		Read
AI	257	Most recent Error 3	Range 1 - 255		Read
AI	258	Most recent Error 4	Range 1 - 255		Read
AI	259	Most recent Error 5	Range 1 - 255		Read
AI	260	Most recent Error 6	Range 1 - 255		Read
AI	261	Most recent Error 7	Range 1 - 255		Read
AI	262	Most recent Error 8	Range 1 - 255		Read
AI	263	Most recent Error 9	Range 1 - 255		Read
AI	264	Most recent Error 10	Range 1 - 255		Read
AI	274	Space CO2 Sensor (Effective)	Range 0 - 2000	ppm	Read
AI	275	Space CO2 Sensor (Local)	Range 0 - 2000	ppm	Read
AI	276	Space Humidity (Effective)	Range 0 - 100	%	Read
AI	277	Space Humidity (Local)	Range 0 - 100	%	Read
AI	278	Dehumidification Set Point (Effective)	Range 0 - 100	%	Read
AI	279	Dehumidification Status	Range 0 - 2		Read	0=Not installed; 1=Installed, not running; 2=Installed and running
AI	281	Return Air Temperature	Range -8.7 - 164.4	°F	Read
AI	282	Building Static Pressure	Range -0.5 - 0.5	in. w.c.	Read
AI	283	Duct Static Pressure	Range 0 - 5.00	in. w.c.	Read
AI	285	Exhaust Fan Status	Range 0 - 100	%	Read	0=Off; 1=Stage 1 on; 2=Stage 2 on; 255=No exhaust
AI	286	Supply airflow status	Range 0 - 480 CFM per ton of unit size	CFM	Read
AI	287	Blower motor speed	Range 0 - 1500	RPM	Read
AI	288	Blower motor torque	Range 0 - 100	%	Read
AI	289	Outdoor airflow	Range 0 - 480 CFM per ton of unit size	CFM	Read
AV	1	Baud Rate Setting	Range 9600, 19200, 38400, 76800		Write
AVmin	130	Heating Occupied Setpoint	Range 40 to 95	°F	Write
AVmin	131	Cooling Occupied Setpoint	Range 40 to 95	°F	Write
AVmin	132	Heating Unoccupied Setpoint	Range 40 to 95	°F	Write
AVmin	133	Cooling Unoccupied Setpoint	Range 40 to 95	°F	Write
AV	134	Supply airflow Low Speed Target	SmartAirflow units only	CFM	Write
AV	135	Supply airflow High Speed Target	SmartAirflow units only	CFM	Write
AV	136	Supply airflow Medium Low Speed Target	SmartAirflow units only	CFM	Write
AV	137	Supply airflow Medium High Speed Target	SmartAirflow units only	CFM	Write
AV	138	Supply airflow Heat Mode Target	SmartAirflow units only	CFM	Write
AV	139	Ventilation airflow Target	SmartAirflow units only	CFM	Write
AV	140	Smoke airflow Target	SmartAirflow units only	CFM	Write
AV	141	Outdoor airflow target	Range 0 to 150 CFM per ton	CFM	Write

Object ID lookup: Lennox Prodigy M3 point IDs by name

AO101Application Mode Control
AO102Outdoor Air Min Pos Control
AO103Occupancy Override Control
AO104Occupancy Scheduler Control
AO107Occupancy Sensor Input
AO108Space Dehumidification Setpoint
AO109Temperature Setpoint (abs)
AO110Temperature Setpoint Offset
AO113Space Temperature Input
AO114Emergency Override Control
AO115Compressor Enable Control
AO117Primary Heat Enable Control
AO119Auxiliary Heat Enable Control
AO123Duct Static Setpoint
AO124Building Static Setpoint
AO125Discharge Air Cooling Setpoint
AO126Discharge Air Heating Setpoint
AO127Supply Fan Capacity Input
AO128Exhaust Fan Capacity Input
AO129Set Economizer Outdoor Air Suitable
AI198Mac Address
AI199IMC Address
AI200IMC Version[4]
AI201IMC Version[5]
AI202IMC Version[6]
AI203IMC Version[7]
AI204IMC Version[8]
AI205IMC Version[9]
AI206IMC Version[10]
AI207IMC Version[11]
AI231Unit ID
AI232Unit Status
AI239Space Temperature
AI240Discharge Air Temperature
AI241Effective Occupancy
AI242Local Outside Air Temperature
AI243Local Space Temperature
AI244Outside Air Damper
AI245Heat Primary
AI246Heat Secondary
AI247Cool Primary
AI248Economizer Enabled
AI250Supply Fan Status
AI252Space Temperature Set Point (Effective)
AI253Current Error
AI254Error Pointer
AI255Most recent Error 1
AI256Most recent Error 2
AI257Most recent Error 3
AI258Most recent Error 4
AI259Most recent Error 5
AI260Most recent Error 6
AI261Most recent Error 7
AI262Most recent Error 8
AI263Most recent Error 9
AI264Most recent Error 10
AI274Space CO2 Sensor (Effective)
AI275Space CO2 Sensor (Local)
AI276Space Humidity (Effective)
AI277Space Humidity (Local)
AI278Dehumidification Set Point (Effective)
AI279Dehumidification Status
AI281Return Air Temperature
AI282Building Static Pressure
AI283Duct Static Pressure
AI285Exhaust Fan Status
AI286Supply airflow status
AI287Blower motor speed
AI288Blower motor torque
AI289Outdoor airflow
AV1Baud Rate Setting
AV130Heating Occupied Setpoint
AV131Cooling Occupied Setpoint
AV132Heating Unoccupied Setpoint
AV133Cooling Unoccupied Setpoint
AV134Supply airflow Low Speed Target
AV135Supply airflow High Speed Target
AV136Supply airflow Medium Low Speed Target
AV137Supply airflow Medium High Speed Target
AV138Supply airflow Heat Mode Target
AV139Ventilation airflow Target
AV140Smoke airflow Target
AV141Outdoor airflow target

Integration notes

Default baud 38.4k; Max_Master 127; Max_Info_Frames 1.
Network values should be refreshed at least every 12 minutes (software v7.08+); the communication time-out is 15 minutes (5 minutes before v7.08).
AO101 Application Mode Control takes coded values (heat/cool/fan/exhaust and direct stage commands); see the source for the full code table.
AI200-AI207 (IMC Version characters) are legacy and not recommended for new installations.
AV134-AV140 airflow targets only apply when SmartAirflow is installed; ranges depend on cabinet size.
The module also has Lennox proprietary object types (compressor, blower, heating, economizer, air sensors) with no instance list; they are not included here.
The older Prodigy M2 BACnet Module guide (0926-L11, 10/2014) prints the same analog object table: same instances and names.

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 Prodigy M3 BACnet Module 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 Lennox Prodigy M3 BACnet Module

How many BACnet points does the Lennox Prodigy M3 BACnet Module have?

This list has 83 BACnet objects: 50 analog inputs, 20 analog outputs, 13 analog values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which Lennox Prodigy M3 BACnet Module BACnet points are writable?

33 of the 83 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 Lennox Prodigy M3 BACnet Module BACnet documentation?

The source is M3 BACnet Module (Unit Information) (Corp 1404-L4 (450402)), revision 2018-10, published free by Lennox at https://www.lennox.com/dA/0082a46061/1404e.pdf.

What are the minimum BACnet points to integrate the Lennox Prodigy M3 BACnet Module?

Start with AO 104 Occupancy Scheduler Control (0 = occupied, 1-255 = unoccupied; rewrite every 7 min); AO 101 Application Mode Control (Mode or direct demand command); AV 130 Heating Occupied Setpoint (Occupied heating setpoint, 40-95 °F); AV 131 Cooling Occupied Setpoint (Occupied cooling setpoint, 40-95 °F); AV 132 Heating Unoccupied Setpoint (Unoccupied heating setpoint, 40-95 °F); AV 133 Cooling Unoccupied Setpoint (Unoccupied cooling setpoint, 40-95 °F); AI 232 Unit Status (HVAC state code: 0 idle, 1 heat, 3 cool, 6 off, 9 fan); AI 239 Space Temperature (Space temperature in use); AI 253 Current Error (Active alarm code).

How do I enable BMS control of the Lennox Prodigy M3 BACnet Module?

Does the Lennox Prodigy M3 BACnet Module need a BACnet heartbeat or have a communication timeout?

Can the BMS supply sensor values to the Lennox Prodigy M3 BACnet Module?

How do I check these points on the real Prodigy M3 BACnet Module?

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 Lennox BACnet points lists

Source: M3 BACnet Module (Unit Information) · Corp 1404-L4 (450402) · rev. 2018-10. Object names, instances and units are reproduced as published; descriptions are our own.