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X2 controllers with BACnet MS/TP (CS1-BAC-002)

Thermostat / room controller · BACnet points list

Vector Controls X2 controllers with BACnet MS/TP (CS1-BAC-002) BACnet points list

Updated 12 November 2026

Short answer

The X2 BACnet MS/TP module maps the X2 operating system into a fixed set of objects: controller state and access locks, universal and virtual inputs with offsets, up to four control loops, analog and digital outputs (with override values and state), fan stages and eight alarms. Objects only appear for the I/O the specific X2 product has.

This page lists 148 BACnet objects for the Vector Controls X2 controllers with BACnet MS/TP (CS1-BAC-002) — 76 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Vector Controls’s own free documentation, linked below.

Manufacturer: Vector Controls
Model: X2 controllers with BACnet MS/TP (CS1-BAC-002)
Equipment: Thermostat / room controller
Equipment type: Thermostats, sensors & meters
BACnet objects: 148 (76 writable)
Transport: BACnet MS/TP
Firmware: Not stated
Also known as: X2-BAC, CS1-BAC-002, AEX-BAC, TCX2, TCI2, SxC2, TRI2, TCX2-40863, TCX2-23343, TCX2-24273, TCX2-14050, X2 BACnet MS/TP
Source document: X2-BACnet MS/TP · 70-00-0218D V1.4 · rev. 2026-08-26

Download CSV 148 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 Vector Controls’s current documentation and the live device before use. Not official Vector Controls information. Terms of use.

BMS integration notes: Vector Controls X2 controllers with BACnet MS/TP (CS1-BAC-002)

Integration in brief

Use BV 0 for on/off and MV 0 for occupied/unoccupied, write loop set points (AV 211 for loop 1) and feed sensor values through the virtual inputs if needed. Read the universal inputs, loop outputs and the alarm MVs.

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 0	OpStOo	Controller on/off	Write
MV 0	OpStCoSt	Occupied / unoccupied	Write
MV 1	OpStHeCo	Cool / heat mode	Write
AV 211	LP-01-SSP	Loop 1 set point	Write
AI 101	UI-01	Universal input 1 (e.g. room temperature)	Read
MV 211	LP-01-ST	Loop 1 state	Read
AV 213	LP-01-PROP	Loop 1 output, %	Read
MV 601	AL-01	Alarm 1 state	Write

Enable & remote start

BV 3-7 lock or unlock local access to modes, set points, manual control, heat/cool change and time programs.

Heartbeat & communication loss

Virtual inputs (AV 109-116) set to the communication module must be rewritten within the controller's timeout, or the input and its functions are disabled and Err 4 shows.

Sensors & values from the BMS

Write sensor values from the BMS to the virtual inputs VI-01..VI-04 (AV 109, 111, 113, 115) when they are set to the communication module.

Network setup

MS/TP MAC (CO03, default 3), baud (CO04, 0 = auto-detect, 9600-115200), max master (CO05) and device ID (CO06-CO09) are set in the controller's COM parameters (login code 241).
Device object name auto-builds as AEX-BAC-<device ID> when CO15 = 2 or 3.

Watch out for

Vector does not recommend changing parameters through ParAdd/ParValue (AV 12/AV 13); use it only as a workaround.
Temperature units follow MV 2 (Celsius/Fahrenheit).

Vector Controls X2 controllers with BACnet MS/TP (CS1-BAC-002) 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.

148 of 148 shown

Type

BinaryMulti-state

Access

Units

Show

Vector Controls X2 controllers with BACnet MS/TP (CS1-BAC-002) BACnet Points List
			Description			States
AV	0	#CtrLp	Number of control loops		Read
AV	1	#BinIn	Number of binary inputs		Read
AV	2	#uIn	Number of universal inputs		Read
AV	3	#vIn	Number of virtual inputs		Read
AV	4	#BinOut	Number of binary outputs		Read
AV	5	#aOut	Number of analog outputs		Read
AV	6	#Fan	Number of fan outputs		Read
AV	7	#FlOut	Number of floating outputs		Read
AV	8	#Alarm	Number of alarms		Read
AV	9	#AuxFun	Number of auxiliary functions		Read
AV	10	#Sched	Number of time schedules		Read
AV	11	#PerSchd	Number of switching times / time schedule		Read
BVmin	0	OpStOo	Operation state		Write	0=Off, 1=On
MVmin	0	OpStCoSt	Operation state Occupied/Unoccupied		Write	1=Occupied, 2=Unoccupied
MVmin	1	OpStHeCo	Operation state Cool/Heat		Write	1=Cool, 2=Heat
MV	2	Degree	Operation state Celsius/Fahrenheit		Write	1=Celsius, 2=Fahrenheit
BV	1	FanOnly	Operation state Fan Only		Write	0=Inactive, 1=Active
BV	2	Schedule	Operation state Time Schedules		Write	0=Inactive, 1=Active
BV	3	AccOpMod	Enable access to operation modes		Write	0=Disable, 1=Enable
BV	4	AccSp	Enable access to set points		Write	0=Disable, 1=Enable
BV	5	AccMan	Enable manual control in cascade and for fan speeds		Write	0=Disable, 1=Enable
BV	6	AccHeCo	Enable change of heating/cooling mode for 2 pipe systems		Write	0=Disable, 1=Enable
BV	7	AccSchd	Enable access to time programs		Write	0=Disable, 1=Enable
MV	3	OpStOPMS	Operation State Master/Slave mode		Write	1=Master, 2=Slave
MV	4	OpStWink	Operation State “Wink” function		Write	1=Wink OFF, 2=Wink ON
MV	5	OpStSWM	Operation State Summer/Winter mode		Write	1=Summer, 2=Winter
AImin	101	UI-01	Universal input 1 value		Read
AV	101	UI-01-OS	Universal input 1 offset (calibration = 01u6)		Write
AI	102	UI-02	Universal input 2 value		Read
AV	102	UI-02-OS	Universal input 2 offset		Write
AI	103	UI-03	Universal input 3 value		Read
AV	103	UI-03-OS	Universal input 3 offset		Write
AI	104	UI-04	Universal input 4 value		Read
AV	104	UI-04-OS	Universal input 4 offset		Write
AI	105	UI-05	Universal input 5 value		Read
AV	105	UI-05-OS	Universal input 5 offset		Write
AI	106	UI-06	Universal input 6 value		Read
AV	106	UI-06-OS	Universal input 6 offset		Write
AI	107	UI-07	Universal input 7 value		Read
AV	107	UI-07-OS	Universal input 7 offset		Write
AI	108	UI-08	Universal input 8 value		Read
AV	108	UI-08-OS	Universal input 8 offset		Write
AV	109	VI-01	Virtual input 1 value		Write
AV	110	VI-01-OS	Virtual input 1 offset		Write
AV	111	VI-02	Virtual input 2 value		Write
AV	112	VI-02-OS	Virtual input 2 offset		Write
AV	113	VI-03	Virtual input 3 value		Write
AV	114	VI-03-OS	Virtual input 3 offset		Write
AV	115	VI-04	Virtual input 4 value		Write
AV	116	VI-04-OS	Virtual input 4 offset		Write
MVmin	601	AL-01	Alarm 1		Write	1=Not Active, 2=Active, 3=Not Active. Needs confirmation
MV	602	AL-02	Alarm 2		Write	1=Not Active, 2=Active, 3=Not Active. Needs confirmation
MV	603	AL-03	Alarm 3		Write	1=Not Active, 2=Active, 3=Not Active. Needs confirmation
MV	604	AL-04	Alarm 4		Write	1=Not Active, 2=Active, 3=Not Active. Needs confirmation
MV	605	AL-05	Alarm 5		Write	1=Not Active, 2=Active, 3=Not Active. Needs confirmation
MV	606	AL-06	Alarm 6		Write	1=Not Active, 2=Active, 3=Not Active. Needs confirmation
MV	607	AL-07	Alarm 7		Write	1=Not Active, 2=Active, 3=Not Active. Needs confirmation
MV	608	AL-08	Alarm 8		Write	1=Not Active, 2=Active, 3=Not Active. Needs confirmation
MVmin	211	LP-01-ST	Loop 1 state		Read	1=Disabled, 2=Heating, 3=Cooling
AVmin	211	LP-01-SSP	Loop 1 saved set point		Write
AV	212	LP-01-CSP	Loop 1 calculated set point		Read
AVmin	213	LP-01-PROP	Loop 1 proportional output 0-100%	%	Read
MV	212	LP-01-DO	Loop 1 binary output: Activated binary stage		Read	1=SOFF, 2=S01, 3=S02, 4=S03, …, 64=S63
MV	221	LP-02-ST	Loop 2 state		Read	1=Disabled, 2=Heating, 3=Cooling
AV	221	LP-02-SSP	Loop 2 saved set point		Write
AV	222	LP-02-CSP	Loop 2 calculated set point		Read
AV	223	LP-02-PROP	Loop 2 proportional output 0-100%	%	Read
MV	222	LP-02-DO	Loop 2 binary output: Activated binary stage		Read	1=SOFF, 2=S01, 3=S02, 4=S03, …, 64=S63
MV	231	LP-03-ST	Loop 3 state		Read	1=Disabled, 2=Heating, 3=Cooling
AV	231	LP-03-SSP	Loop 3 saved set point		Write
AV	232	LP-03-CSP	Loop 3 calculated set point		Read
AV	233	LP-03-PROP	Loop 3 proportional output 0-100%	%	Read
MV	232	LP-03-DO	Loop 3 binary output: Activated binary stage		Read	1=SOFF, 2=S01, 3=S02, 4=S03, …, 64=S63
MV	241	LP-04-ST	Loop 4 state		Read	1=Disabled, 2=Heating, 3=Cooling
AV	241	LP-04-SSP	Loop 4 saved set point		Write
AV	242	LP-04-CSP	Loop 4 calculated set point		Read
AV	243	LP-04-PROP	Loop 4 proportional output 0-100%	%	Read
MV	242	LP-04-DO	Loop 4 binary output: Activated binary stage		Read	1=SOFF, 2=S01, 3=S02, 4=S03, …, 64=S63
MV	311	AO-01-ST	Analog output 1 state		Write	1=Off, 2=Normal, 3=Manual, 4=Override
AV	311	AO-01-VAL	Analog output 1 value 0-100%	%	Read
AV	312	AO-01-OV	Analog output 1 override value 0-100%	%	Write
MV	321	AO-02-ST	Analog output 2 state		Write	1=Off, 2=Normal, 3=Manual, 4=Override
AV	321	AO-02-VAL	Analog output 2 value 0-100%	%	Read
AV	322	AO-02-OV	Analog output 2 override value 0-100%	%	Write
MV	331	AO-03-ST	Analog output 3 state		Write	1=Off, 2=Normal, 3=Manual, 4=Override
AV	331	AO-03-VAL	Analog output 3 value 0-100%	%	Read
AV	332	AO-03-OV	Analog output 3 override value 0-100%	%	Write
AV	411	DO-01-FLT	DO 1 value in 3-point floating (DO1 open / DO2 close)	%	Read
AV	412	DO-01-FLT-OV	DO 1 override value in analog mode 3-point floating	%	Write
MV	411	DO-01-ST	Current State for DO 1		Write	1=Off, 2=Normal, 3=Manual, 4=Override
AV	431	DO-03-FLT	DO 3 value in 3-point floating (DO3 open / DO4 close)		Read
AV	432	DO-03-FLT-OV	DO 3 override value in 3-point floating	%	Write
MV	431	DO-03-ST	Current State for DO 3		Write	1=Off, 2=Normal, 3=Manual, 4=Override
AV	451	DO-05-FLT	DO 5 value in 3-point floating (DO5 open / DO6 close)		Read
AV	452	DO-05-FLT-OV	DO 5 override value in 3-point floating	%	Write
MV	451	DO-05-ST	Current State for DO 5		Write	1=Off, 2=Normal, 3=Manual, 4=Override
AV	413	DO-01-PWM	DO 1 in PWM from 0-100%	%	Read
AV	414	DO-01-PWM-OV	DO 1 override value in PWM from 0-100%	%	Write
AV	423	DO-02-PWM	DO 2 in PWM from 0-100%	%	Read
AV	424	DO-02-PWM-OV	DO 2 override value in PWM from 0-100%	%	Write
MV	421	DO-02-ST	Current State for DO 2		Write	1=Off, 2=Normal, 3=Manual, 4=Override
AV	433	DO-03-PWM	DO 3 in PWM from 0-100%	%	Read
AV	434	DO-03-PWM-OV	DO 3 override value in PWM from 0-100%	%	Write
AV	443	DO-04-PWM	DO 4 in PWM from 0-100%	%	Read
AV	444	DO-04-PWM-OV	DO 4 override value in PWM from 0-100%	%	Write
MV	441	DO-04-ST	Current State for DO 4		Write	1=Off, 2=Normal, 3=Manual, 4=Override
AV	453	DO-05-PWM	DO 5 in PWM from 0-100%	%	Read
AV	454	DO-05-PWM-OV	DO 5 override value in PWM from 0-100%	%	Write
AV	463	DO-06-PWM	DO 6 in PWM from 0-100%	%	Read
AV	464	DO-06-PWM-OV	DO 6 override value in PWM from 0-100%	%	Write
MV	461	DO-06-ST	Current State for DO 6		Write	1=Off, 2=Normal, 3=Manual, 4=Override
AV	473	DO-07-PWM	DO 7 in PWM from 0-100%	%	Read
AV	474	DO-07-PWM-OV	DO 7 override value in PWM from 0-100%	%	Write
MV	471	DO-07-ST	Current State for DO 7		Write	1=Off, 2=Normal, 3=Manual, 4=Override
BV	411	DO-01-BIN	DO 1 in binary		Read	0=Off, 1=On
BV	412	DO-01-BIN-OV	DO 1 override value in binary		Write	0=Off, 1=On
AV	511	DO-01-RT	Run time totalizer in hours	h	Read
BV	511	DO-01-ALA	Run time limit exceeded		Read	0=No Error, 1=RT Limit Reached
BV	421	DO-02-BIN	DO 2 in binary		Read	0=Off, 1=On
BV	422	DO-02-BIN-OV	DO 2 override value in binary		Write	0=Off, 1=On
AV	521	DO-02-RT	Run time totalizer in hours	h	Read
BV	521	DO-02-ALA	Run time limit exceeded		Read	0=No Error, 1=RT Limit Reached
BV	431	DO-03-BIN	DO 3 in binary		Read	0=Off, 1=On
BV	432	DO-03-BIN-OV	DO 3 override value in binary		Write	0=Off, 1=On
AV	531	DO-03-RT	Run time totalizer in hours	h	Read
BV	531	DO-03-ALA	Run time limit exceeded		Read	0=No Error, 1=RT Limit Reached
BV	441	DO-04-BIN	DO 4 in binary		Read	0=Off, 1=On
BV	442	DO-04-BIN-OV	DO 4 override value in binary		Write	0=Off, 1=On
AV	541	DO-04-RT	Run time totalizer in hours	h	Read
BV	541	DO-04-ALA	Run time limit exceeded		Read	0=No Error, 1=RT Limit Reached
BV	451	DO-05-BIN	DO 5 in binary		Read	0=Off, 1=On
BV	452	DO-05-BIN-OV	DO 5 override value in binary		Write	0=Off, 1=On
AV	551	DO-05-RT	Run time totalizer in hours	h	Read
BV	551	DO-05-ALA	Run time limit exceeded		Read	0=No Error, 1=RT Limit Reached
BV	461	DO-06-BIN	DO 6 in binary		Read	0=Off, 1=On
BV	462	DO-06-BIN-OV	DO 6 override value in binary		Write	0=Off, 1=On
AV	561	DO-06-RT	Run time totalizer in hours	h	Read
BV	561	DO-06-ALA	Run time limit exceeded		Read	0=No Error, 1=RT Limit Reached
BV	471	DO-07-BIN	DO 7 in binary		Read	0=Off, 1=On
BV	472	DO-07-BIN-OV	DO 7 override value in binary		Write	0=Off, 1=On
AV	571	DO-07-RT	Run time totalizer in hours	h	Read
BV	571	DO-07-ALA	Run time limit exceeded		Read	0=No Error, 1=RT Limit Reached
MV	412	DO-01-FAN	Analog output 1 value FAN1 (AO1); named FAN1 in lead-lag fan mode		Read	1=Fan Off, 2=Fan Low, 3=Fan Medium, 4=Fan High
MV	413	DO-01-FAN-OV	Analog output 1 override value FAN1; named FAN1-OV in lead-lag fan mode		Write	1=Fan Off, 2=Fan Low, 3=Fan Medium, 4=Fan High, 5=Fan Auto
MV	442	DO-04-FAN	Analog output 2 value FAN2 (AO2); named FAN2 in lead-lag fan mode		Read	1=Fan Off, 2=Fan Low, 3=Fan Medium, 4=Fan High
MV	443	DO-04-FAN-OV	Analog output 2 override value FAN2; named FAN2-OV in lead-lag fan mode		Write	1=Fan Off, 2=Fan Low, 3=Fan Medium, 4=Fan High, 5=Fan Auto
AV	12	ParAdd	Address of parameter, address per the doc's table		Write
AV	13	ParValue	Parameter value		Write

Object ID lookup: Vector Controls X2 controllers with BACnet MS/TP (CS1-BAC-002) point IDs by name

AV0#CtrLp
AV1#BinIn
AV2#uIn
AV3#vIn
AV4#BinOut
AV5#aOut
AV6#Fan
AV7#FlOut
AV8#Alarm
AV9#AuxFun
AV10#Sched
AV11#PerSchd
BV0OpStOo
MV0OpStCoSt
MV1OpStHeCo
MV2Degree
BV1FanOnly
BV2Schedule
BV3AccOpMod
BV4AccSp
BV5AccMan
BV6AccHeCo
BV7AccSchd
MV3OpStOPMS
MV4OpStWink
MV5OpStSWM
AI101UI-01
AV101UI-01-OS
AI102UI-02
AV102UI-02-OS
AI103UI-03
AV103UI-03-OS
AI104UI-04
AV104UI-04-OS
AI105UI-05
AV105UI-05-OS
AI106UI-06
AV106UI-06-OS
AI107UI-07
AV107UI-07-OS
AI108UI-08
AV108UI-08-OS
AV109VI-01
AV110VI-01-OS
AV111VI-02
AV112VI-02-OS
AV113VI-03
AV114VI-03-OS
AV115VI-04
AV116VI-04-OS
MV601AL-01
MV602AL-02
MV603AL-03
MV604AL-04
MV605AL-05
MV606AL-06
MV607AL-07
MV608AL-08
MV211LP-01-ST
AV211LP-01-SSP
AV212LP-01-CSP
AV213LP-01-PROP
MV212LP-01-DO
MV221LP-02-ST
AV221LP-02-SSP
AV222LP-02-CSP
AV223LP-02-PROP
MV222LP-02-DO
MV231LP-03-ST
AV231LP-03-SSP
AV232LP-03-CSP
AV233LP-03-PROP
MV232LP-03-DO
MV241LP-04-ST
AV241LP-04-SSP
AV242LP-04-CSP
AV243LP-04-PROP
MV242LP-04-DO
MV311AO-01-ST
AV311AO-01-VAL
AV312AO-01-OV
MV321AO-02-ST
AV321AO-02-VAL
AV322AO-02-OV
MV331AO-03-ST
AV331AO-03-VAL
AV332AO-03-OV
AV411DO-01-FLT
AV412DO-01-FLT-OV
MV411DO-01-ST
AV431DO-03-FLT
AV432DO-03-FLT-OV
MV431DO-03-ST
AV451DO-05-FLT
AV452DO-05-FLT-OV
MV451DO-05-ST
AV413DO-01-PWM
AV414DO-01-PWM-OV
AV423DO-02-PWM
AV424DO-02-PWM-OV
MV421DO-02-ST
AV433DO-03-PWM
AV434DO-03-PWM-OV
AV443DO-04-PWM
AV444DO-04-PWM-OV
MV441DO-04-ST
AV453DO-05-PWM
AV454DO-05-PWM-OV
AV463DO-06-PWM
AV464DO-06-PWM-OV
MV461DO-06-ST
AV473DO-07-PWM
AV474DO-07-PWM-OV
MV471DO-07-ST
BV411DO-01-BIN
BV412DO-01-BIN-OV
AV511DO-01-RT
BV511DO-01-ALA
BV421DO-02-BIN
BV422DO-02-BIN-OV
AV521DO-02-RT
BV521DO-02-ALA
BV431DO-03-BIN
BV432DO-03-BIN-OV
AV531DO-03-RT
BV531DO-03-ALA
BV441DO-04-BIN
BV442DO-04-BIN-OV
AV541DO-04-RT
BV541DO-04-ALA
BV451DO-05-BIN
BV452DO-05-BIN-OV
AV551DO-05-RT
BV551DO-05-ALA
BV461DO-06-BIN
BV462DO-06-BIN-OV
AV561DO-06-RT
BV561DO-06-ALA
BV471DO-07-BIN
BV472DO-07-BIN-OV
AV571DO-07-RT
BV571DO-07-ALA
MV412DO-01-FAN
MV413DO-01-FAN-OV
MV442DO-04-FAN
MV443DO-04-FAN-OV
AV12ParAdd
AV13ParValue

Integration notes

Objects are created only for the inputs, outputs, loops and alarms the X2 product actually has; the datasheet scope table says which exist.
Digital output objects depend on how each output is configured (fan, 3-point floating, PWM or binary); the same instance can appear in several of these tables, listed here once.
Alarm MVs (601-608) can only be written to Not Active when the alarm is waiting for confirmation.
Other controller parameters are reached through ParAdd/ParValue (an address + value pair), not as separate objects.
Controller information AVs 0-11 report how many loops, inputs, outputs, alarms and schedules the controller has.

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 X2 controllers with BACnet MS/TP (CS1-BAC-002) 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 Vector Controls X2 controllers with BACnet MS/TP (CS1-BAC-002)

How many BACnet points does the Vector Controls X2 controllers with BACnet MS/TP (CS1-BAC-002) have?

This list has 148 BACnet objects: 8 analog inputs, 75 analog values, 29 binary values, 36 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which Vector Controls X2 controllers with BACnet MS/TP (CS1-BAC-002) BACnet points are writable?

76 of the 148 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 Vector Controls X2 controllers with BACnet MS/TP (CS1-BAC-002) BACnet documentation?

The source is X2-BACnet MS/TP (70-00-0218D V1.4), revision 2026-08-26, published free by Vector Controls at https://vectorcontrols.com/application/files/1517/8775/5952/70-00-0218D_X2-BACnet_V1_4.pdf.

What are the minimum BACnet points to integrate the Vector Controls X2 controllers with BACnet MS/TP (CS1-BAC-002)?

Start with BV 0 OpStOo (Controller on/off); MV 0 OpStCoSt (Occupied / unoccupied); MV 1 OpStHeCo (Cool / heat mode); AV 211 LP-01-SSP (Loop 1 set point); AI 101 UI-01 (Universal input 1 (e.g. room temperature)); MV 211 LP-01-ST (Loop 1 state); AV 213 LP-01-PROP (Loop 1 output, %); MV 601 AL-01 (Alarm 1 state).

How do I enable BMS control of the Vector Controls X2 controllers with BACnet MS/TP (CS1-BAC-002)?

BV 3-7 lock or unlock local access to modes, set points, manual control, heat/cool change and time programs.

Does the Vector Controls X2 controllers with BACnet MS/TP (CS1-BAC-002) need a BACnet heartbeat or have a communication timeout?

Virtual inputs (AV 109-116) set to the communication module must be rewritten within the controller's timeout, or the input and its functions are disabled and Err 4 shows.

Can the BMS supply sensor values to the Vector Controls X2 controllers with BACnet MS/TP (CS1-BAC-002)?