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B848-LX / BP848-LX configurable field controller (Onyxx LX)

Rooftop / air handling unit controller (configurable) · BACnet points list

Lynxspring B848-LX / BP848-LX configurable field controller (Onyxx LX) BACnet points list

Updated 12 November 2026Unofficial source

Short answer

The B848-LX and BP848-LX are configurable Onyxx LX field controllers with eight universal inputs, eight binary and four analog outputs. They run a fixed rooftop/air handler application that is set up through multi-state configuration objects: staging, economizer, power exhaust, humidification, supply pressure, zone averaging from VAV boxes and fan coil options. The BACnet MS/TP map lists the I/O, setpoints, zone data, status flags, PID loops and all configuration MSVs.

This page lists 198 BACnet objects for the Lynxspring B848-LX / BP848-LX configurable field controller (Onyxx LX) — 143 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from a copy of Lynxspring’s documentation hosted by Cochrane Supply, not by Lynxspring itself, so treat it as unofficial.

Manufacturer: Lynxspring
Model: B848-LX / BP848-LX configurable field controller (Onyxx LX)
Equipment: Rooftop / air handling unit controller (configurable)
Equipment type: Rooftop units, AHUs & DOAS
BACnet objects: 198 (143 writable)
Transport: BACnet MS/TP
Firmware: Onyxx LX UI software 4.0 or later, firmware 2.224 or later
Also known as: B848-LX, BP848-LX, B848, BP848, Onyxx LX B848, Onyxx LX BP848
Source document: B848-LX Installation and Wiring Guide (unofficial copy, hosted by Cochrane Supply)

Download CSV 198 rows Download EDE B.I.G.-EU JSON Source PDF (unofficial copy) ↗ Compare with your scan Download Easy BACnet Mobile App Google Play

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

BMS integration notes: Lynxspring B848-LX / BP848-LX configurable field controller (Onyxx LX)

Integration in brief

Set the address and baud on the DIP switches and configure the application through the MSVs (equipment type, staging, economizer, sensors). Then set system mode and occupied setpoints from the BMS and read return/supply temperatures, fan status, static pressure and the freeze and TZ sensor 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
MV 11	Mode	System mode (Off/Auto/Cool/Heat)	Write
AV 35	RTSPclg_Occ	Occupied cooling setpoint	Write
AV 36	RTSPhtg_Occ	Occupied heating setpoint	Write
BV 5	SystemOccSchd	System occupancy schedule state	Read
AV 14	ReturnT	Return air temperature	Read
AV 16	SupplyT	Supply air temperature	Read
BV 15	FanStat	Fan status	Read
AV 22	SupplyPres	Supply static pressure	Read
BV 7	FreezeCond	Freeze condition active	Read
BV 24	TZstatus	TZ room sensor comms status	Read

Network setup

MS/TP address is set on DIP switch bank DS2 (1-127); baud on DS1: 010 = 9600, 110 = 19200, 001 = 38400, 011 = 76800.
An EOL jumper terminates the MS/TP trunk on the last controller; a second jumper terminates the TZ sensor bus.
Firmware updates use a USB-COM adapter or a USB to MS/TP converter cable.

Watch out for

Most behaviour depends on the configuration MSVs; a missing location setting leaves the matching value unused.
BV 10 saves objects to flash and restarts the controller; do not write it cyclically.

Lynxspring B848-LX / BP848-LX configurable field controller (Onyxx LX) 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.

Note: the source document has no read/write column, so access here is inferred from the object type (inputs read-only, values writable). Confirm on the live controller before writing.

198 of 198 shown

Type

Multi-stateOther

Access

Units

Show

Lynxspring B848-LX / BP848-LX configurable field controller (Onyxx LX) BACnet Points List
			Description			States
AI	0	AI_1	Analog input 1		Write
AI	1	AI_2	Analog input 2		Write
AI	2	AI_3	Analog input 3		Write
AI	3	AI_4	Analog input 4		Write
AI	4	AI_5	Analog input 5		Write
AI	5	AI_6	Analog input 6		Write
AI	6	AI_7	Analog input 7		Write
AI	7	AI_8	Analog input 8		Write
AO	1	AO_1	Analog output 1	%	Write
AO	2	AO_2	Analog output 2	%	Write
AO	3	AO_3	Analog output 3	%	Write
AO	4	AO_4	Analog output 4	%	Write
BO	0	BO_1	Binary output 1		Write	0=Off, 1=On
BO	1	BO_2	Binary output 2		Write	0=Off, 1=On
BO	2	BO_3	Binary output 3		Write	0=Off, 1=On
BO	3	BO_4	Binary output 4		Write	0=Off, 1=On
BO	4	BO_5	Binary output 5		Write	0=Off, 1=On
BO	5	BO_6	Binary output 6		Write	0=Off, 1=On
BO	6	BO_7	Binary output 7		Write	0=Off, 1=On
BO	7	BO_8	Binary output 8		Write	0=Off, 1=On
AV	0	AddrList_Grp1	Address List, Group 1 (qty)		Write
AV	1	AddrList_Grp2	Address List, Group 1 (qty)		Write
AV	2	AddrList_Grp3	Address List, Group 1 (qty)		Write
AV	5	ZNbOnline	Number of zones currently online		Read
AV	6	ZHtgDemand	Zones Heating Demand	%	Read
AV	7	ZClgDemand	Zones Cooling Demand	%	Read
AV	8	ZTmin	Minimum Zones Room temp.	°F	Read
AV	9	ZTavg	Average Zones Room temp.	°F	Read
AV	10	ZTmax	Maximum Zones Room temp.	°F	Read
AV	11	ZUnoccHLTSP	Zones unoccupied H.L. temp. setpoint	°F	Write
AV	12	ZUnoccLLTSP	Zones unoccupied L.L. temp. setpoint	°F	Write
AVmin	14	ReturnT	Return temp.	°F	Read
AV	15	RoomTSP	Room (return) temp. Setpoint	°F	Write
AVmin	16	SupplyT	Supply temp.	°F	Read
AV	17	HLsupTSP	H.L. supply temp. setpoint (recom. 50°C)	°F	Write
AV	18	LLsupTSP	L.L. supply temp. setpoint (recom. 8°C)	°F	Write
AV	19	FZsupTSP	Freeze supply temp. setpoint (recom. 3°C)	°F	Write
AV	20	FanStThreshold	Fan analog input status threshold	%	Write
AV	21	FanMinAO	Fan analog min. output	%	Write
AVmin	22	SupplyPres	Supply static pressure		Read
AV	23	SupplyPresSP	Supply static pressure setpoint		Write
AV	24	FanMinOnTime	Fan minimum ON time		Write
AV	26	MotionTime	Motion sensor active time		Write
AV	27	OvrTime	Occupancy override active time		Write
AV	28	FanMaxAO	Fan analog max output		Write
AV	29	OAT	Outside air temp.	°F	Read
AV	30	RoomCO2	Room (return) CO2	ppm	Read
AV	31	RoomCO2SP	Room (return) CO2 Setpoint	ppm	Write
AV	33	RTSPmin_Occ	Minimum Room temp. setpoint	°F	Write
AV	34	RTSPmax_Occ	Maximum Room temp. setpoint	°F	Write
AVmin	35	RTSPclg_Occ	Room temp. cooling setpoint, occupied	°F	Write
AVmin	36	RTSPhtg_Occ	Room temp. heating setpoint, occupied	°F	Write
AV	37	RTSP_DeadBand	RTSP deadband between Clg and Htg	°F	Write
AV	38	RTSPclg_Unocc	Room temp. cooling setpoint, unoccupied	°F	Write
AV	39	RTSPhtg_Unocc	Room temp. heating setpoint, unoccupied	°F	Write
AV	40	RTSPclg_STBdt	Standby mode, RTSP clg offset (pos.)	°F	Write
AV	41	RTSPhtg_STBdt	Standby mode, RTSP htg offset (neg.)	°F	Write
AV	42	ActiveRTSP_Clg	Active cooling room temp. setpoint	°F	Read
AV	43	ActiveRTSP_Htg	Active heating room temp. setpoint	°F	Read
AV	46	PwrExhMinAO	Power exhaust analog min. output	%	Read
AV	47	PwrExhStThres	PwrExh analog input status threshold	%	Read
AV	49	PidSupPresOut	PID supply pressure output	%	Read
AV	50	DehumSP	Dehumidification Setpoint		Read
AV	51	RoomRH	Room(or return) R.H.	%	Read
AV	52	RoomRHSP	Room (or return) R.H. setpoint	%	Write
AV	53	SupplyRH	Supply (hi limit) R.H.	%	Write
AV	54	SupplyRHSP	Supply (hi limit) R.H. setpoint	%	Write
AV	56	SupSPmaxHtg	Supply temp. setpoint @ 100% htg demand	°F	Read
AV	57	SupSPneutral	Supply temp. setpoint @ 0% htg, 0% clg	°F	Read
AV	58	SupSPminClg	Supply temp. setpoint @ 100% clg demand	°F	Read
AV	59	SupSPcalc	Supply temp. setpoint calculated	°F	Write
AV	60	ComprLockout	Compressor Lockout	°F	Write
AV	61	ComprStgDelay	Compressor stages delay	s	Write
AV	62	HtgStgDelay	Heating stages delay	s	Write
AV	63	FanRunTime	Fan run time before stages permitted	s	Write
AV	65	FanHtgOffDelay	Delay to stop fan if no heating demand	%	Write
AV	66	FanClgOffDelay	Delay to stop fan if no cooling demand	%	Write
AV	67	EconMinPos	Economizer minimum position	%	Write
AV	68	EconMaxPos	Economizer maximum CO2 position	%	Write
AV	69	PwrExhOff	Power Exh off (Economizer position)	%	Write
AV	70	PwrExhOn	Power Exh on (Economizer position)	%	Write
AV	71	OATHumAuth	Outside air temp humidifier authorize	°F	Write
AV	72	OATHtgAuth	Outside air temp Heating authorize	°F	Write
AV	73	OATEconAuth	Outside air temp Economizer authorize	°F	Read
AV	75	OAHum	Outside air Humidity	°F	Read
AV	76	OAE	Outside air Enthalpy	BTU/lb	Read
AV	77	EnthSP	Economizer Enthalpy Setpoint	BTU/lb	Write
AV	78	MixedAirTSP	Economizer Mixed Air Setpoint	°F	Write
AV	79	MAT	Economizer Mixed Air Temperature	°F	Write
AV	80	Calib_RoomT	Room temp. calibration	°F	Write
AV	81	Calib_RoomSP	Room temp. Setpoint calibration	°F	Write
AV	89	ChOverSP	Changeover temperature setpoint	°F	Write
AV	90	ChOverT	Changeover temperature reading	°F	Write
AV	91	HtgRunTme	Heating run time (for floating output)	s	Write
AV	92	ClgRunTme	Cooling run time (for floating output)	s	Write
BV	2	ZOvr	Zones occupancy override activated		Read
BV	3	ZMotion	Zones motion detected		Read	0=Off, 1=Active
BVmin	5	SystemOccSchd	System occupancy schedule		Read	0=Off, 1=Active
BV	6	EconOccSched	Economiser occupancy schedule		Read	0=Night, 1=Day
BVmin	7	FreezeCond	Freeze condition active ?		Read	0=Night, 1=Day
BV	8	FreeClgAuth	Free cooling authorized?		Read	0=No, 1=Yes
BV	10	SaveAndRestart	Save objects to flash and restart		Read	0=Normal, 1=Active
BV	14	FanControl	Supply fan control		Write	0=Normal, 1=Active
BVmin	15	FanStat	Fan status		Read	0=Continuous, 1=Intermittent
BV	16	PwrExhStat	Power exhaust status		Read	0=Off, 1=On
BV	17	FanHtgDemand	Intermittent fan demand on Heating		Read	0=Off, 1=On
BV	18	FanClgDemand	Intermittent fan demand on Cooling		Read	0=Off, 1=On
BV	19	Dehdemand	Dehumidification Demand		Read	0=Off, 1=On
BV	20	DehAuth	Dehumidification Authorization		Read	0=No, 1=Yes
BV	21	EnthalpyAuth	Economizer Enthalpy Authorization		Read	0=No, 1=Yes
BV	23	DehAuth	Dehumidification Authorization		Read	0=No, 1=Yes
BVmin	24	TZstatus	TZxxx communication status		Read	0=Normal, 1=Fault
BV	40	ChOverStatus	Change over status		Read	0=Cold, 1=Hot
BV	41	Anti_Ice	Ice detection status on coil		Read	0=Normal, 1=Ice_Detected
BV	42	Drain_Pan	Overflow detection inside drain pan		Read	0=Normal, 1=Overflow
MV	0	Units_Type	Units configuration (temp. & Pressure)		Write	1=°F, H2O, 2=°C, H2O, 3=°F, PA, 4=°C, PA
MV	1	Tstor10K_Type	Thermistors type (std type 3 or type 2)		Write	1=Other, 2=Type 3 (std), 3=Type 2
MV	2	RoomT_Loc	Room temp. physical location		Write	As printed: None; AI-1..AI-8; Tzone; AdrList
MV	3	RoomTSP_Loc	Room (return) temp. SP location (occ.)		Write	As printed: None; AI-1..AI-8; Tzone; AdrList
MV	4	Units_Type	Cooling control type		Write	1=None, 2=1 Stage, 3=2 Stage, 4=3 Stage, 5=4 Stage, 6=1 modulating, 7=2 modulating, 8=1 Stg + 1 mod.
MV	5	Clg_Type	Cooling BO physical loc. (first stage)		Write	As printed: None; BO-2..BO-8
MV	6	ClgBO_Loc	Cooling AO physical loc. (first stage)		Write	As printed: None; AO-1..AO-4
MV	7	ClgAO_Loc	Cooling output 1 formula		Write	1=0-10 VDC, Dir., 2=0-10 VDC, Rev., 3=2-10 VDC, Dir., 4=2-10 VDC, Rev., 5=Off-On, 6=Pulse, Dir., 7=Pulse, Rev.
MV	8	Clg2_Form	Cooling output 2 formula		Write	1=0-10 VDC, Dir., 2=0-10 VDC, Rev., 3=2-10 VDC, Dir., 4=2-10 VDC, Rev., 5=Off-On, 6=Pulse, Dir., 7=Pulse, Rev.
MV	9	Clg3_Form	Cooling output 3 formula		Write	1=0-10 VDC, Dir., 2=0-10 VDC, Rev., 3=2-10 VDC, Dir., 4=2-10 VDC, Rev., 5=Off-On, 6=Pulse, Dir., 7=Pulse, Rev.
MV	10	Clg4_Form	Cooling output 4 formula		Write	1=0-10 VDC, Dir., 2=0-10 VDC, Rev., 3=2-10 VDC, Dir., 4=2-10 VDC, Rev., 5=Off-On, 6=Pulse, Dir., 7=Pulse, Rev.
MVmin	11	Mode	System Mode		Write	1=Off, 2=Auto, 3=Cool, 4=Heat
MV	12	FanMode	Fan mode		Write	As printed: Low. Medium; High, Auto
MV	13	Htg_Type	Heating control type		Write	1=None, 2=1 Stage, 3=2 Stage, 4=3 Stage, 5=4 Stage, 6=1 modulating, 7=2 modulating, 8=1 Stg + 1 mod., 9=1 Auto + 1 mod
MV	14	HtgBO_Loc	Heating BO physical loc. (first stage)		Write	As printed: None; BO-2..BO-8
MV	15	HtgAO_Loc	Heating AO physical loc. (first stage)		Write	As printed: None; AO-1..AO-4
MV	16	Htg1_Form	Heating output 1 formula		Write	1=0-10 VDC, Dir., 2=0-10 VDC, Rev., 3=2-10 VDC, Dir., 4=2-10 VDC, Rev., 5=Off-On, 6=Pulse, Dir., 7=Pulse, Rev.
MV	17	Htg2_Form	Htg2_Form		Write	1=0-10 VDC, Dir., 2=0-10 VDC, Rev., 3=2-10 VDC, Dir., 4=2-10 VDC, Rev., 5=Off-On, 6=Pulse, Dir., 7=Pulse, Rev.
MV	18	Htg3_Form	Htg3_Form		Write	1=0-10 VDC, Dir., 2=0-10 VDC, Rev., 3=2-10 VDC, Dir., 4=2-10 VDC, Rev., 5=Off-On, 6=Pulse, Dir., 7=Pulse, Rev.
MV	19	Htg4_Form	Htg4_Form		Write	1=0-10 VDC, Dir., 2=0-10 VDC, Rev., 3=2-10 VDC, Dir., 4=2-10 VDC, Rev., 5=Off-On, 6=Pulse, Dir., 7=Pulse, Rev.
MV	20	CO2_Loc	CO2 sensor physical location		Write	As printed: None; AI-1..AI-8; External
MV	21	CO2_Form	CO2 sensor Formula		Write	1=Min, 2=Avg, 3=Max
MV	23	Fan_Type	Fan conrol type (BO-0 and/or AO)		Write	1=Off-On, 2=Modulating, 3=Off-On + Mod.
MV	24	FanAO_Form	Fan analog output formula		Write	1=0-10 VDC, 2=2-10 VDC, 3=Unused
MV	25	FanStat_Loc	Fan status physical location		Write	As printed: None; AI-1..AI-8; External
MV	26	FanStat_Form	Fan status formula		Write	1=Off-On, 2=0-10 VDC, %, 3=2-10 VDC, %
MV	27	OAT_Loc	Outside air temp. physical location		Write	As printed: None; AI-1..AI-8; External
MV	28	SupT_Loc	Supply temp. physical location		Write	As printed: None; AI-1..AI-8; External
MV	29	Econ_Type	Economizer control		Write	1=None, 2=Off-Auto, 3=Modulating
MV	30	Econ_Loc	Economizer physical location		Write	1=None, 2=BO-5, 3=BO-6, 4=BO-7, 5=BO-8, 6=AO-1, 7=AO-2, 8=AO-3, 9=AO-4
MV	31	Econ_Form	Economizer output formula		Write	1=Off-On, 2=0-10 VDC, 3=2-10 VDC
MV	32	PwrExh_Type	Power exhaust control type ==VAR==		Write	1=None, 2=Off-On, 3=Modulating, 4=Off-On + Mod.
MV	33	PwrExhBO_Loc	Power exhaust BO physical location		Write	1=None, 2=Off-On, 3=Modulating, 4=Off-On + Mod.
MV	34	PwrExhAO_Loc	Power exhaust AO physical location		Write	As printed: None; BO-2..BO-8
MV	35	PwrExhAO_Form	Power exhaust analog output formula		Write	1=0-10 VDC, 2=2-10 VDC, 3=Unused
MV	36	PwrExhStat_Loc	Power exhaust status physical location		Write	1=None, 2=AI-1, 3=AI-2, 4=AI-3, 5=AI-4, 6=AI-5, 7=AI-6, 8=AI-7, 9=AI-8, 10=External
MV	37	PwrExStat_Form	Power exhaust status formula		Write	1=Off-On, 2=0-10 VDC, 3=2-10 VDC
MV	38	RetT_Loc	Return temp. physical location		Write	As printed: None; AI-1..AI-8; External
MV	40	BypassDmp_Loc	Bypass damper physical location		Write	1=None, 2=Float BO-2,3, 3=Float BO-3,4, 4=Float BO-4,5, 5=Float BO-5,6, 6=Float BO-6,7, 7=Float BO-7,8, 8=AO-1, 9=AO-2, 10=AO-3, 11=AO-4
MV	41	BypassDmp_Form	Bypass damper output formula		Write	1=0-10 VDC, Dir., 2=0-10 VDC, Rev., 3=2-10 VDC, Dir., 4=2-10 VDC, Rev., 5=Floating, Dir., 6=Floating, Rev.
MV	42	PresSnsr_Loc	Pressor Sensor Location		Write	As printed: None; AI-1..AI-8; External
MV	43	PresSnsr_Form	Pressure sensor formula		Write	1=0-10 VDC, 1.0", 2=0-10 VDC, 2.5", 3=0-10 VDC, 5.0", 4=2-10 VDC, 1.0", 5=2-10 VDC, 2.5", 6=2-10 VDC, 5.0"
MV	44	Motion_Loc	Motion sensor location		Write	1=Auto Detect, 2=NO, AI-4 (BI), 3=NC, AI-4 (BI), 4=NO, AI-5 (BI), 5=NC, AI-5 (BI), 6=NO, AI-6 (BI), 7=NC, AI-6 (BI), 8=NO, AI-7 (BI), 9=NC, AI-7 (BI), 10=NO, AI-8 (BI), 11=NC, AI-8 (BI), 12=External
MV	45	SystemSch_Loc	System scheduler location		Write	As printed: None (Off); None (On); Scheduler; AI-1 (BI)..AI-8 (BI); External
MV	46	EconSch_Loc	Economizer scheduler location		Write	As printed: None (Off); None (On); Scheduler; AI-1 (BI)..AI-8 (BI); External
MV	47	Hum_Type	Humidifier control type ==VAR==		Write	1=None, 2=1 Stage, 3=2 Stage, 4=Modulating, 5=1 Stg + 1 mod., 6=Auto + mod.
MV	48	HumBO_Loc	Hum. BO physical loc. (first stage)		Write	As printed: None; BO-2..BO-8
MV	49	HumAO_Loc	Hum. AO physical loc. (first stage)		Write	As printed: None; AO-1..AO-4
MV	50	Hum1_Form	Humidifier output 1 formula		Write	1=0-10 VDC, Dir., 2=0-10 VDC, Rev., 3=2-10 VDC, Dir., 4=2-10 VDC, Rev., 5=Off-On, 6=Pulse, Dir., 7=Pulse, Rev.
MV	51	Hum2_Form	Humidifier output 2 formula		Write	1=0-10 VDC, Dir., 2=0-10 VDC, Rev., 3=2-10 VDC, Dir., 4=2-10 VDC, Rev., 5=Off-On, 6=Pulse, Dir., 7=Pulse, Rev.
MV	52	RoomRH_Loc	Room (return) RH sensor location		Write	As printed: None; AI-1..AI-8; External; Local TZ200; TZ200 List
MV	53	RoomRH_Form	Room (return) RH sensor formula		Write	1=0-10 VDC, %, 2=2-10 VDC, %, 3=Unused
MV	54	SupplyRH_Loc	Supply (hi limit) R.H. sensor location		Write	As printed: None; AI-1..AI-8; External
MV	55	SupplyRH_Form	Supply (hi limit) R.H. sensor formula		Write	1=0-10 VDC, %, 2=2-10 VDC, %, 3=Unused
MV	56	Deh_Loc	Dehumidification output location		Write	As printed: None; BO-2 – BO8; Modulating
MV	57	HumInput	Humidity Input		Write	As printed: None; AI-1 – AI-8; External; Local TZ200; TZ200 List
MV	58	MixedAirTempInput	Mixed Air Temp Input		Write	As printed: None; AI-1 – AI-8; External
MV	60	HtgDemandType	Heating demand type selection (in occupied mode)		Write	1=Minimum, 2=Average, 3=Maximum
MV	61	ClgDemandType	Cooling demand type selection (in occupied mode)		Write	1=Minimum, 2=Average, 3=Maximum
MV	62	RoomTSPType	Room temp setpoint type (in occupied mode)		Write	1=Heating, 2=Central, 3=Cooling
MV	65	Equipment	Equipment Type		Write	1=RTU/AHU, 2=Heatpump
MV	66	RevValve	Reversing Valve Type (O/B)		Write	1=None, 2=O (O on cool), 3=B (B on heat)
MV	67	OB_Loc	Reversing Valve O/B Output Location		Write	1=None, 2=BO-2, 3=BO-3, 4=BO-4, 5=BO-5, 6=BO-6, 7=BO-7, 8=BO-8
MV	68	HtgClgMode	Heating/cooling mode		Read	1=Heat, 2=Cool, 3=Unused
MV	72	TimedOvrStatus	Timed Override Status		Read	1=Idle, 2=TimeOvrRequest, 3=TimeOvrCancel
MV	90	ChOverTyp	FCU ChangeOver input type		Write	As printed: None, ChOver NO Heat, ChOver NO Cool, ChOver Sensor
MV	91	ChOverLoc	FCU ChangeOver input location		Write	As printed: None; AI1-AI8; External
MV	92	Anti_Ice_Loc	Anti ice input location (BI)		Write	As printed: None; AI1-AI8
MV	93	Freeze_Lo	Freezing detection location (BI)		Write	As printed: None; AI1-AI8
MV	94	FanLock	Fan lock		Read	1=None, 2=Lock
MV	95	Cond_Loc	Condensation input location		Write	As printed: None; AI1-AI8
MV	96	SeqOper	CFG Control sequence of operation		Write	As printed: Cool-heat-Auto; Cool-Heat, Cool Only; Heat Only
MV	97	Fan_Seq	CFG Control fan sequence		Write	As printed: L-M-H, L_H; L-M-H-A; L-H-A, On-Auto
MV	98	Key Lock	CFG Keypad lock level		Write	1=None, 2=Fan, 3=Mode, 4=Fan+Mode, 5=All
LO	1	PidRoomT_Clg	Room temp. control loop, cooling (Direct acting, Kp 20, Ki 0.05, bias 0)		Read
LO	2	PidRoomT_Htg	Room temp. control loop, heating (Reverse acting, Kp 20, Ki 0.05, bias 0)		Read
LO	4	PidSupPres	Supply pressure control loop (Direct acting, Kp 75, Ki 5, bias 50)		Read
LO	6	PidSupT	Supply temp. control loop (Direct acting, Kp 5, Ki 0.1, bias 50)		Read
LO	7	PidHL_SupT	Supply temp. high limit control loop (Reverse acting, Kp 5, Ki 0.1, bias 50)		Read
LO	8	PidLL_SupT	Supply temp. low limit control loop (Direct acting, Kp 5, Ki 0.1, bias 50)		Read
LO	10	PidRoomRH	Room RH control loop (Reverse acting, Kp 20, Ki 0.05, bias 0)		Read
LO	11	PidHL_SupHR	Supply RH high limit control loop (Direct acting, Kp 10, Ki 0.05, bias 0)		Read
LO	12	PidMAT	Mix air T for economizer control (Direct acting, Kp 10, Ki 0.05, bias 0)		Read

Object ID lookup: Lynxspring B848-LX / BP848-LX configurable field controller point IDs by name

AI0AI_1
AI1AI_2
AI2AI_3
AI3AI_4
AI4AI_5
AI5AI_6
AI6AI_7
AI7AI_8
AO1AO_1
AO2AO_2
AO3AO_3
AO4AO_4
BO0BO_1
BO1BO_2
BO2BO_3
BO3BO_4
BO4BO_5
BO5BO_6
BO6BO_7
BO7BO_8
AV0AddrList_Grp1
AV1AddrList_Grp2
AV2AddrList_Grp3
AV5ZNbOnline
AV6ZHtgDemand
AV7ZClgDemand
AV8ZTmin
AV9ZTavg
AV10ZTmax
AV11ZUnoccHLTSP
AV12ZUnoccLLTSP
AV14ReturnT
AV15RoomTSP
AV16SupplyT
AV17HLsupTSP
AV18LLsupTSP
AV19FZsupTSP
AV20FanStThreshold
AV21FanMinAO
AV22SupplyPres
AV23SupplyPresSP
AV24FanMinOnTime
AV26MotionTime
AV27OvrTime
AV28FanMaxAO
AV29OAT
AV30RoomCO2
AV31RoomCO2SP
AV33RTSPmin_Occ
AV34RTSPmax_Occ
AV35RTSPclg_Occ
AV36RTSPhtg_Occ
AV37RTSP_DeadBand
AV38RTSPclg_Unocc
AV39RTSPhtg_Unocc
AV40RTSPclg_STBdt
AV41RTSPhtg_STBdt
AV42ActiveRTSP_Clg
AV43ActiveRTSP_Htg
AV46PwrExhMinAO
AV47PwrExhStThres
AV49PidSupPresOut
AV50DehumSP
AV51RoomRH
AV52RoomRHSP
AV53SupplyRH
AV54SupplyRHSP
AV56SupSPmaxHtg
AV57SupSPneutral
AV58SupSPminClg
AV59SupSPcalc
AV60ComprLockout
AV61ComprStgDelay
AV62HtgStgDelay
AV63FanRunTime
AV65FanHtgOffDelay
AV66FanClgOffDelay
AV67EconMinPos
AV68EconMaxPos
AV69PwrExhOff
AV70PwrExhOn
AV71OATHumAuth
AV72OATHtgAuth
AV73OATEconAuth
AV75OAHum
AV76OAE
AV77EnthSP
AV78MixedAirTSP
AV79MAT
AV80Calib_RoomT
AV81Calib_RoomSP
AV89ChOverSP
AV90ChOverT
AV91HtgRunTme
AV92ClgRunTme
BV2ZOvr
BV3ZMotion
BV5SystemOccSchd
BV6EconOccSched
BV7FreezeCond
BV8FreeClgAuth
BV10SaveAndRestart
BV14FanControl
BV15FanStat
BV16PwrExhStat
BV17FanHtgDemand
BV18FanClgDemand
BV19Dehdemand
BV20DehAuth
BV21EnthalpyAuth
BV23DehAuth
BV24TZstatus
BV40ChOverStatus
BV41Anti_Ice
BV42Drain_Pan
MV0Units_Type
MV1Tstor10K_Type
MV2RoomT_Loc
MV3RoomTSP_Loc
MV4Units_Type
MV5Clg_Type
MV6ClgBO_Loc
MV7ClgAO_Loc
MV8Clg2_Form
MV9Clg3_Form
MV10Clg4_Form
MV11Mode
MV12FanMode
MV13Htg_Type
MV14HtgBO_Loc
MV15HtgAO_Loc
MV16Htg1_Form
MV17Htg2_Form
MV18Htg3_Form
MV19Htg4_Form
MV20CO2_Loc
MV21CO2_Form
MV23Fan_Type
MV24FanAO_Form
MV25FanStat_Loc
MV26FanStat_Form
MV27OAT_Loc
MV28SupT_Loc
MV29Econ_Type
MV30Econ_Loc
MV31Econ_Form
MV32PwrExh_Type
MV33PwrExhBO_Loc
MV34PwrExhAO_Loc
MV35PwrExhAO_Form
MV36PwrExhStat_Loc
MV37PwrExStat_Form
MV38RetT_Loc
MV40BypassDmp_Loc
MV41BypassDmp_Form
MV42PresSnsr_Loc
MV43PresSnsr_Form
MV44Motion_Loc
MV45SystemSch_Loc
MV46EconSch_Loc
MV47Hum_Type
MV48HumBO_Loc
MV49HumAO_Loc
MV50Hum1_Form
MV51Hum2_Form
MV52RoomRH_Loc
MV53RoomRH_Form
MV54SupplyRH_Loc
MV55SupplyRH_Form
MV56Deh_Loc
MV57HumInput
MV58MixedAirTempInput
MV60HtgDemandType
MV61ClgDemandType
MV62RoomTSPType
MV65Equipment
MV66RevValve
MV67OB_Loc
MV68HtgClgMode
MV72TimedOvrStatus
MV90ChOverTyp
MV91ChOverLoc
MV92Anti_Ice_Loc
MV93Freeze_Lo
MV94FanLock
MV95Cond_Loc
MV96SeqOper
MV97Fan_Seq
MV98Key Lock
LO1PidRoomT_Clg
LO2PidRoomT_Htg
LO4PidSupPres
LO6PidSupT
LO7PidHL_SupT
LO8PidLL_SupT
LO10PidRoomRH
LO11PidHL_SupHR
LO12PidMAT

Integration notes

The guide has no read/write column; access is inferred from its tags (Status = read-only; Cfg, User and Cmd = writable).
The B848-LX and BP848-LX guides print the same object table (one typo apart: AV 14 tagged "Staus"); the BP848-LX guide asks for firmware 2.238 or later.
MSV 4-7 names look shifted by one row in the guide (MSV 4 printed as Units_Type for cooling control type, MSV 5 Clg_Type, MSV 6 ClgBO_Loc, MSV 7 ClgAO_Loc); MSV 17-19 repeat the name as description; kept as printed. BV 7 FreezeCond and BV 15 FanStat print state texts (Night/Day, Continuous/Intermittent) that look copied from other rows; kept as printed.
Some MSV state lists are printed in short form (for example "AI-1..AI-8"); those are kept as printed rather than numbered. MSV 33 prints the power exhaust type states.
AV 40 is printed with a gap ("RTSPclg_STBd t"); listed as RTSPclg_STBdt to match AV 41.
Temperature units are listed as °F; the guide prints °F and °C ranges and the controller can be set to metric.

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 B848-LX / BP848-LX configurable field controller (Onyxx LX) 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 Lynxspring B848-LX / BP848-LX configurable field controller (Onyxx LX)

How many BACnet points does the Lynxspring B848-LX / BP848-LX configurable field controller (Onyxx LX) have?

This list has 198 BACnet objects: 8 analog inputs, 4 analog outputs, 75 analog values, 8 binary outputs, 20 binary values, 9 loops, 74 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which Lynxspring B848-LX / BP848-LX configurable field controller (Onyxx LX) BACnet points are writable?

143 of the 198 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. The source has no read/write column, so this is inferred from object type.

Where is the official Lynxspring B848-LX / BP848-LX configurable field controller (Onyxx LX) BACnet documentation?

Lynxspring does not publish it on its own website. This list comes from B848-LX Installation and Wiring Guide, a copy hosted by Cochrane Supply at https://www.cochranesupply.com/media/assets/product/documents/Lynxspring/B848%20Installation%20and%20Wiring%20Guide.pdf. Ask Lynxspring or its representative for the current revision.

What are the minimum BACnet points to integrate the Lynxspring B848-LX / BP848-LX configurable field controller (Onyxx LX)?

Start with MV 11 Mode (System mode (Off/Auto/Cool/Heat)); AV 35 RTSPclg_Occ (Occupied cooling setpoint); AV 36 RTSPhtg_Occ (Occupied heating setpoint); BV 5 SystemOccSchd (System occupancy schedule state); AV 14 ReturnT (Return air temperature); AV 16 SupplyT (Supply air temperature); BV 15 FanStat (Fan status); AV 22 SupplyPres (Supply static pressure); BV 7 FreezeCond (Freeze condition active); BV 24 TZstatus (TZ room sensor comms status).

How do I check these points on the real B848-LX / BP848-LX configurable field controller (Onyxx LX)?

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 Lynxspring BACnet points lists

Source: B848-LX Installation and Wiring Guide. Object names, instances and units are reproduced as published; descriptions are our own.