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IMI Hydronic
TA-Slider 160 / 500 / 750 / 1250 / 1600 BACnet MS/TP actuator

Valve actuator (digital, BACnet MS/TP) · BACnet points list

IMI Hydronic TA-Slider 160 / 500 / 750 / 1250 / 1600 BACnet MS/TP actuator BACnet points list

Updated 12 November 2026

Short answer

Digitally configurable TA-Slider valve actuators (160 N to 1600 N) with BACnet MS/TP. Over the bus they take a relative setpoint, report position, interpolated flow and two optional temperature sensors, and expose stroke/flow limits, change-over regimes, temperature limitation and an error log. The 160/500 and the 750/1250/1600 documents print the same object table, except that only the larger actuators have the second relay (BV 4).

This page lists 90 BACnet objects for the IMI Hydronic TA-Slider 160 / 500 / 750 / 1250 / 1600 BACnet MS/TP actuator — 48 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from IMI Hydronic’s own free documentation, linked below.

Manufacturer: IMI Hydronic
Model: TA-Slider 160 / 500 / 750 / 1250 / 1600 BACnet MS/TP actuator
Equipment: Valve actuator (digital, BACnet MS/TP)
Equipment type: Valves & actuators
BACnet objects: 90 (48 writable)
Transport: BACnet MS/TP
Firmware: 2.5.0
Also known as: TA-Slider 750, TA-Slider 1250, TA-Slider 1600, TA-Slider 750 Plus, TA-Slider 1600 Plus, TA-Slider 750 2T, TA-Slider 1600 2T, 322226, 322227, 322228, TA-Slider 160, TA-Slider 500, TA-Slider 160 BACnet MS/TP, TA-Slider 500 BACnet MS/TP R24, TA-Slider 160 CO, IMI TA TA-Slider, 322224 13011, 322225 13011
Source document: TA-Slider 750/1250/1600 BACnet MS/TP Protocol Implementation Conformance Statement - PICS · rev. 11.2024

Download CSV 90 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 IMI Hydronic’s current documentation and the live device before use. Not official IMI Hydronic information. Terms of use.

BMS integration notes: IMI Hydronic TA-Slider 160 / 500 / 750 / 1250 / 1600 BACnet MS/TP actuator

Integration in brief

Configure the actuator with HyTune (device ID, baud, parity) and set Signal Source to BusCom, then write the relative setpoint AV 0 and read back position, flow and the motor status. Set AV 2 if you want an error when the BMS stops sending.

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
AV 0	Control Setpoint	Relative setpoint, 0-100 %	Write
AI 0	Actuator position Feedback	Actuator position, %	Read
MI 0	Motor status	Motor status (7 = error)	Read
AI 7	FlowFeedback SI	Interpolated flow, l/h (needs valve type)	Read
BI 0	Override Status	Manual/electrical override active	Read
AV 10	Errors code	Error code (0 = no error)	Read

Enable & remote start

The actuator follows AV 0 only when Signal Source (MSI 11) is BusCom; that is set with the HyTune app and TA-Dongle.

Heartbeat & communication loss

AV 2 Cyclic control timeout (0-60 min, default 0 = off) raises a CyclicTime error if no control signal arrives within the time.

Network setup

Baud rate Auto (default), 9600-115200; device ID, baud and parity are set with HyTune.
Device instance defaults to a value computed from the serial number; Max_Master and Location are writable.
RS-485 termination: switched on with HyTune on the 160/500; on the 750/1250/1600 remove the jumper behind the wire connector on the communication board.

Watch out for

Flow objects need the valve type defined (AV 31 or HyTune), otherwise they are meaningless.
Change-over by bus uses BV 2 (regime) and BV 3 (relay for a 6-way valve) and needs HyTune pre-configuration (FW 2.5.0+).

IMI Hydronic TA-Slider 160 / 500 / 750 / 1250 / 1600 BACnet MS/TP actuator 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.

90 of 90 shown

Type

Access

Units

Show

IMI Hydronic TA-Slider 160 / 500 / 750 / 1250 / 1600 BACnet MS/TP actuator BACnet Points List
			Description			States
AImin	0	Actuator position Feedback	Current actuator position, % of stroke	%	Read
AI	1	Calibrated stroke SI	Stroke found by calibration, µm	µm	Read
AI	2	Calibrated stroke US	Stroke found by calibration, inches	in	Read
AI	3	Motor ontime	Total motor running time since first power-up	s	Read
AI	4	Actuator ontime	Total time in service since first power-up	s	Read
AI	5	Actuator distance SI	Total travel since first power-up, mm	mm	Read
AI	6	Actuator distance US	Total travel since first power-up, inches	in	Read
AImin	7	FlowFeedback SI	Interpolated flow, l/h (needs valve type)	l/h	Read
AI	8	FlowFeedback US	Interpolated flow, USGPM (needs valve type)	USGPM	Read
AI	9	Temperature 1 SI	Sensor 1 temperature, °C (10000/10001 = fault)	°C	Read
AI	10	Temperature 1 US	Sensor 1 temperature, °F (10000/10001 = fault)	°F	Read
AI	11	Temperature 2 SI	Sensor 2 temperature, °C (10000/10001 = fault)	°C	Read
AI	12	Temperature 2 US	Sensor 2 temperature, °F (10000/10001 = fault)	°F	Read
AVmin	0	Control Setpoint	Relative setpoint, % of the active maximum	%	Write
AV	1	Communication address	MS/TP address of the actuator		Write
AV	2	Cyclic control timeout	Error if no control signal within this time (0 = off)	min	Write
AV	3	Max Stroke Limitation R1 SI	Max stroke in regime 1, µm	µm	Write
AV	4	Max Stroke Limitation R1 US	Max stroke in regime 1, inches	in	Write
AV	5	Max Stroke Limitation R2 SI	Max stroke in regime 2, µm	µm	Write
AV	6	Max Stroke Limitation R2 US	Max stroke in regime 2, inches	in	Write
AV	7	Min stroke limitation R1 SI	Min stroke in regime 1, µm	µm	Write
AV	8	Min stroke limitation R1 US	Min stroke in regime 1, inches	in	Write
AVmin	10	Errors code	Active error code (0 = no error)		Read
AV	11	Error 1	Error log, oldest entry		Read
AV	12	Error 2	Error log entry 2		Read
AV	13	Error 3	Error log entry 3		Read
AV	14	Error 4	Error log entry 4		Read
AV	15	Error 5	Error log entry 5		Read
AV	16	Error 6	Error log entry 6		Read
AV	17	Error 7	Error log entry 7		Read
AV	18	Error 8	Error log entry 8		Read
AV	19	Error 9	Error log entry 9		Read
AV	20	Error 10	Error log, newest entry		Read
AV	21	Min stroke limitation R2 SI	Min stroke in regime 2, µm	µm	Write
AV	22	Min stroke limitation R2 US	Min stroke in regime 2, inches	in	Write
AV	23	Max Flow limitation R1 SI	Max flow in regime 1, l/h	l/h	Write
AV	24	Max Flow limitation R1 US	Max flow in regime 1, USGPM	USGPM	Write
AV	25	Max Flow limitation R2 SI	Max flow in regime 2, l/h	l/h	Write
AV	26	Max Flow limitation R2 US	Max flow in regime 2, USGPM	USGPM	Write
AV	27	Min Flow limitation R1 SI	Min flow in regime 1, l/h	l/h	Write
AV	28	Min Flow limitation R1 US	Min flow in regime 1, USGPM	USGPM	Write
AV	29	Min Flow limitation R2 SI	Min flow in regime 2, l/h	l/h	Write
AV	30	Min Flow limitation R2 US	Min flow in regime 2, USGPM	USGPM	Write
AV	31	Valve	Valve type the actuator is mounted on		Write
AV	32	DeltaT Setpoint R1	Delta T limitation setpoint, regime 1	K	Write
AV	33	DeltaT Setpoint R2	Delta T limitation setpoint, regime 2	K	Write
AV	34	Return T Setpoint R1 SI	Return temperature limit, regime 1, °C	°C	Write
AV	35	Return T Setpoint R1 US	Return temperature limit, regime 1, °F	°F	Write
AV	36	Return T Setpoint R2 SI	Return temperature limit, regime 2, °C	°C	Write
AV	37	Return T Setpoint R2 US	Return temperature limit, regime 2, °F	°F	Write
AV	38	Min Flow threshold R1 SI	Flow below which temp limitation stops, regime 1	l/h	Write
AV	39	Min Flow threshold R1 US	Flow below which temp limitation stops, regime 1	USGPM	Write
AV	40	Min Flow threshold R2 SI	Flow below which temp limitation stops, regime 2	l/h	Write
AV	41	Min Flow threshold R2 US	Flow below which temp limitation stops, regime 2	USGPM	Write
AV	42	Min stroke threshold R1 SI	Stroke below which temp limitation stops, regime 1	µm	Write
AV	43	Min stroke threshold R1 US	Stroke below which temp limitation stops, regime 1	in	Write
AV	44	Min stroke threshold R2 SI	Stroke below which temp limitation stops, regime 2	µm	Write
AV	45	Min stroke threshold R2 US	Stroke below which temp limitation stops, regime 2	in	Write
AV	46	Heating reference Supply DT	Reference supply delta T for heating return-temp limit	K	Write
AV	47	Cooling reference Supply DT	Reference supply delta T for cooling return-temp limit	K	Write
AV	48	ChangeOver Temp Switch R1 SI	Supply temp that switches to cooling, °C	°C	Write
AV	49	ChangeOver Temp Switch R1 US	Supply temp that switches to cooling, °F	°F	Write
AV	50	ChangeOver Temp Switch R2 SI	Supply temp that switches to heating, °C	°C	Write
AV	51	ChangeOver Temp Switch R2 US	Supply temp that switches to heating, °F	°F	Write
AV	52	CoRegime switching DT	Temperature difference needed to switch regimes	K	Write
BImin	0	Override Status	Mechanical or electrical override active		Read	0=No, 1=Yes
BI	1	Physical Binary Input	State of the physical binary input		Read	0=Off, 1=On
BI	2	Temp Limitation Status	Current status of the temperature limitation		Read	0=Inactive, 1=Active
BI	3	Temp 1 Used	Defines whether the Temperature sensor 1 is used or not		Read	0=Not used, 1=Used
BI	4	Temp 2 Used	Defines whether the Temperature sensor 2 is used or not		Read	0=Not used, 1=Used
BV	0	Valve opening type	Valve direction (push-to-close or push-to-open)		Read	0=Push-to-close, 1=Push-to-open
BV	1	Force calibration	Request forced calibration		Write	0=Off, 1=On
BV	2	Bus Binary input	Regime or flushing request from the bus (see MSI 10)		Write	0=Regime1 / No flushing, 1=Regime2 / Flushing
BV	3	Relay1	Relay 1 command when its trigger is BusCom		Write	0=Deactivated, 1=Activated
BV	4	Relay2	Relay 2 command when its trigger is BusCom		Write	0=Deactivated, 1=Activated
BV	5	Enable Limited Stroke	Enable stroke limits (read-only with some change-over types)		Write	0=Deactivated, 1=Activated
MImin	0	Motor status	Motor status		Read	1=Stopped, 2=Retracting, 3=Extending, 4=Calibration, 5=Manual-override, 6=Clogging, 7=Error
MI	1	Power type	Power type		Read	1=Low, 2=High, 3=USB
MI	2	Actuator Control Characteristics	Characteristic of the actuator		Read	1=Linear, 2=Equal Percentage Modified (EQM), 3=Inverted EQM
MI	3	Actuator Speed	Actuator speed (set with HyTune)	s/mm	Read
MI	4	Operating Mode	Heating or cooling mode (sets defaults and limits)		Read	1=Heating, 2=Cooling
MI	5	Current CoRegime	Current change-over regime status		Read	1=Regime1, 2=Regime2
MI	6	CoRegime switching	Switching mode between regimes 1 and 2		Read	1=None, 2=Dual-Range input Signal, 3=BusCom, 4=Temperature detection, 6=Delta Temperature Detection, 7=Binary input
MI	7	Temp 1 location	Location on which the Temperature sensor 1 is installed		Read	1=Supply side, 2=Return side
MI	8	Temp 2 location	Location on which the Temperature sensor 2 is installed		Read	1=Supply side, 2=Return side
MI	9	Temp Limitation Type	Temperature limitation type to be chosen between DT or return temperature		Read	1=None, 2=DT limitation, 3=T return limitation
MI	10	Bus Binary Action	What BV 2 does when regime switching is BusCom		Read	1=None, 2=Change-Over, 3=Flushing
MI	11	Signal Source	SignalSource used to control the TA-Slider		Read	1=Analog (V), 5=BusCom
MV	0	RS-485 Baud rate	Baud rate for the BACnet MS/TP communication		Write
MV	1	Valve Control Char	Control characteristic of the valve type		Write	1=Linear, 2=EQM

Object ID lookup: IMI Hydronic TA-Slider 160 / 500 / 750 / 1250 / 1600 BACnet MS/TP actuator point IDs by name

AI0Actuator position Feedback
AI1Calibrated stroke SI
AI2Calibrated stroke US
AI3Motor ontime
AI4Actuator ontime
AI5Actuator distance SI
AI6Actuator distance US
AI7FlowFeedback SI
AI8FlowFeedback US
AI9Temperature 1 SI
AI10Temperature 1 US
AI11Temperature 2 SI
AI12Temperature 2 US
AV0Control Setpoint
AV1Communication address
AV2Cyclic control timeout
AV3Max Stroke Limitation R1 SI
AV4Max Stroke Limitation R1 US
AV5Max Stroke Limitation R2 SI
AV6Max Stroke Limitation R2 US
AV7Min stroke limitation R1 SI
AV8Min stroke limitation R1 US
AV10Errors code
AV11Error 1
AV12Error 2
AV13Error 3
AV14Error 4
AV15Error 5
AV16Error 6
AV17Error 7
AV18Error 8
AV19Error 9
AV20Error 10
AV21Min stroke limitation R2 SI
AV22Min stroke limitation R2 US
AV23Max Flow limitation R1 SI
AV24Max Flow limitation R1 US
AV25Max Flow limitation R2 SI
AV26Max Flow limitation R2 US
AV27Min Flow limitation R1 SI
AV28Min Flow limitation R1 US
AV29Min Flow limitation R2 SI
AV30Min Flow limitation R2 US
AV31Valve
AV32DeltaT Setpoint R1
AV33DeltaT Setpoint R2
AV34Return T Setpoint R1 SI
AV35Return T Setpoint R1 US
AV36Return T Setpoint R2 SI
AV37Return T Setpoint R2 US
AV38Min Flow threshold R1 SI
AV39Min Flow threshold R1 US
AV40Min Flow threshold R2 SI
AV41Min Flow threshold R2 US
AV42Min stroke threshold R1 SI
AV43Min stroke threshold R1 US
AV44Min stroke threshold R2 SI
AV45Min stroke threshold R2 US
AV46Heating reference Supply DT
AV47Cooling reference Supply DT
AV48ChangeOver Temp Switch R1 SI
AV49ChangeOver Temp Switch R1 US
AV50ChangeOver Temp Switch R2 SI
AV51ChangeOver Temp Switch R2 US
AV52CoRegime switching DT
BI0Override Status
BI1Physical Binary Input
BI2Temp Limitation Status
BI3Temp 1 Used
BI4Temp 2 Used
BV0Valve opening type
BV1Force calibration
BV2Bus Binary input
BV3Relay1
BV4Relay2
BV5Enable Limited Stroke
MI0Motor status
MI1Power type
MI2Actuator Control Characteristics
MI3Actuator Speed
MI4Operating Mode
MI5Current CoRegime
MI6CoRegime switching
MI7Temp 1 location
MI8Temp 2 location
MI9Temp Limitation Type
MI10Bus Binary Action
MI11Signal Source
MV0RS-485 Baud rate
MV1Valve Control Char

Integration notes

Taken from the protocol implementation tables (object, name, access, unit, value range, default, resolution) of both TA-Slider documents; footnote markers after names are removed.
Differences between the two documents: BV 4 Relay2 exists only on the 750/1250/1600; the 160/500 document prints AV 0 as "ControlSetpoint" and MSI 1 state 2 as reserved; stroke and flow ranges are model-specific.
Many objects come in SI and US pairs (µm/in, l/h/USGPM, °C/°F); read the one that matches your units.
Several limits and temperature functions only apply when the change-over regime, valve type (AV 31) or temperature limitation is configured, usually with the HyTune app and TA-Dongle. Access [RW] (relay, limited stroke) is writable only in some configurations.
Some objects need firmware 1.1.0 (main board 4.0.0), 2.4.4/2.4.5 or 2.5.0 per the footnotes; BV 3/BV 4 relays need the relay option.
TA-Slider 160/500 document (dated 29/01/2024): https://assets.imi-hydronic.com/Documents/Instructions/IMI_TA/Low/TA-Slider_160-500_BACnet_MS-TP_Protocol_Implementation.pdf

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 TA-Slider 160 / 500 / 750 / 1250 / 1600 BACnet MS/TP actuator 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 IMI Hydronic TA-Slider 160 / 500 / 750 / 1250 / 1600 BACnet MS/TP actuator

How many BACnet points does the IMI Hydronic TA-Slider 160 / 500 / 750 / 1250 / 1600 BACnet MS/TP actuator have?

This list has 90 BACnet objects: 13 analog inputs, 52 analog values, 5 binary inputs, 6 binary values, 12 multi-state inputs, 2 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which IMI Hydronic TA-Slider 160 / 500 / 750 / 1250 / 1600 BACnet MS/TP actuator BACnet points are writable?

48 of the 90 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 IMI Hydronic TA-Slider 160 / 500 / 750 / 1250 / 1600 BACnet MS/TP actuator BACnet documentation?

The source is TA-Slider 750/1250/1600 BACnet MS/TP Protocol Implementation Conformance Statement - PICS, revision 11.2024, published free by IMI Hydronic at https://assets.imi-hydronic.com/Documents/Instructions/IMI_TA/Low/TA-Slider_750-1250-1600_BACnet_MS-TP_Protocol_Implementation.pdf.

What are the minimum BACnet points to integrate the IMI Hydronic TA-Slider 160 / 500 / 750 / 1250 / 1600 BACnet MS/TP actuator?

Start with AV 0 Control Setpoint (Relative setpoint, 0-100 %); AI 0 Actuator position Feedback (Actuator position, %); MI 0 Motor status (Motor status (7 = error)); AI 7 FlowFeedback SI (Interpolated flow, l/h (needs valve type)); BI 0 Override Status (Manual/electrical override active); AV 10 Errors code (Error code (0 = no error)).

How do I enable BMS control of the IMI Hydronic TA-Slider 160 / 500 / 750 / 1250 / 1600 BACnet MS/TP actuator?

The actuator follows AV 0 only when Signal Source (MSI 11) is BusCom; that is set with the HyTune app and TA-Dongle.

Does the IMI Hydronic TA-Slider 160 / 500 / 750 / 1250 / 1600 BACnet MS/TP actuator need a BACnet heartbeat or have a communication timeout?

AV 2 Cyclic control timeout (0-60 min, default 0 = off) raises a CyclicTime error if no control signal arrives within the time.

How do I check these points on the real TA-Slider 160 / 500 / 750 / 1250 / 1600 BACnet MS/TP actuator?

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 IMI Hydronic BACnet points lists

Control valve (pressure-independent, flow and energy measuring)
IMI Hydronic TA-Smart smart control valve (BACnet MS/TP and BACnet IP)
IMI TA-Smart, TA-Smart-Dp and TA-Smart fail-safe 2-way control valves DN15-150 with ultrasonic flow measurement, BACnet MS/TP or BACnet IP versions.
140 objects · 69 writable
Also known as: TA-Smart, TA-Smart-Dp, TA-Smart fail-safe, IMI TA-Smart, 322231, 322232, 322233, TA-Smart BACnet IP, TA-Smart BACnet MS/TP

Source: TA-Slider 750/1250/1600 BACnet MS/TP Protocol Implementation Conformance Statement - PICS · rev. 11.2024. Object names, instances and units are reproduced as published; descriptions are our own.