Easy BACnet- Home
- BACnet points lists
- Badger Meter
- Dynasonics TFX-500w clamp-on ultrasonic flow meter (BACnet MS/TP)
Ultrasonic flow meter (clamp-on) · BACnet points list
Badger Meter Dynasonics TFX-500w clamp-on ultrasonic flow meter (BACnet MS/TP) BACnet points list
Updated 6 November 2026
The TFX-500w's RS-485 port runs Modbus RTU or BACnet MS/TP. Over BACnet it gives flow rate and velocity (home-screen units, US and metric), net/positive/negative/gross totals as single-precision AVs and 64-bit Large Analog Values, overflow counters, unit selections, three writable cutoff settings, signal strength and four command BOs.
This page lists 46 BACnet objects for the Badger Meter Dynasonics TFX-500w clamp-on ultrasonic flow meter (BACnet MS/TP) — 7 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Badger Meter’s own free documentation, linked below.
- Manufacturer
- Badger Meter
- Model
- Dynasonics TFX-500w clamp-on ultrasonic flow meter (BACnet MS/TP)
- Equipment
- Ultrasonic flow meter (clamp-on)
- Equipment type
- Thermostats, sensors & meters
- BACnet objects
- 46 (7 writable)
- Transport
- BACnet MS/TP
- Firmware
- v2.00.278 (PICS)
- Also known as
- TFX-500w, TFX-500, Dynasonics TFX-500w, TTM-UM-02773
Reference only, provided as-is: verify against Badger Meter’s current documentation and the live device before use. Not official Badger Meter information. Terms of use.
BMS integration notes: Badger Meter Dynasonics TFX-500w clamp-on ultrasonic flow meter (BACnet MS/TP)
In Main Menu > System Setup > Communication select BACnet MS/TP, set MAC and BACnet ID, match the trunk settings and choose read-only or read/write access. Read flow rate, a net or positive total and signal strength.
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 800 | Flow Rate (gal/min) | Flow rate, gpm | Read |
| AV 2401 | Positive Flow Totalizer (gal) | Forward flow total, gallons | Read |
| AV 2400 | Net Flow Totalizer (gal) | Net (forward minus reverse) total, gallons | Read |
| AV 801 | Velocity (ft/sec) | Fluid velocity, ft/s | Read |
| AV 5500 | Signal Strength | Ultrasonic signal strength (low = bad reading) | Read |
Enable & remote start
BACnet writes only work when the meter's Access setting in the BACnet MS/TP menu is read/write.
Network setup
- Main Menu > System Setup > Communication > BACnet MS/TP: MAC 1-254, BACnet ID 0-4,194,303.
- Baud (9600-115200), parity, stop bits and max MAC must match the master.
- Built-in termination resistor is enabled in the communication settings.
- Connecting the USB programming cable disables the RS-485 port.
Watch out for
- Writing BO 0 Reset Totalizers zeroes every total.
- Totals overflow; the overflow counters (AV 2304-2307) count rollovers of the home-screen totals.
Badger Meter Dynasonics TFX-500w clamp-on ultrasonic flow meter (BACnet MS/TP) 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.
| Description | States | |||||
|---|---|---|---|---|---|---|
| AV | 600 | Flow Rate on Screen | Flow rate as shown on the home screen | home screen units | Read | |
| AV | 601 | Velocity on Screen | Fluid velocity as shown on the home screen | home screen units | Read | |
| AV | 602 | Delta Time Filtered (ns) | Upstream/downstream transit time difference | ns | Read | |
| AVmin | 800 | Flow Rate (gal/min) | Flow rate | gpm | Read | |
| AVmin | 801 | Velocity (ft/sec) | Fluid velocity | ft/s | Read | |
| AV | 1000 | Flow Rate (l/min) | Flow rate | l/min | Read | |
| AV | 1001 | Velocity (m/sec) | Fluid velocity | m/s | Read | |
| AV | 2300 | Net Flow Totalizer (home screen units) | Total volume, forward minus reverse (can be negative) | home screen units | Read | |
| AV | 2301 | Positive Flow Totalizer (home screen units) | Total volume, forward flow only | home screen units | Read | |
| AV | 2302 | Negative Flow Totalizer (home screen units) | Total volume, reverse flow only | home screen units | Read | |
| AV | 2303 | Gross Flow Totalizer (home screen units) | Total volume, forward plus reverse | home screen units | Read | |
| AV | 2304 | Totalizer Overflow Counter (Net) | Times the net total has overrun (home screen units) | Read | ||
| AV | 2305 | Totalizer Overflow Counter (Positive) | Times the positive total has overrun (home screen units) | Read | ||
| AV | 2306 | Totalizer Overflow Counter (Negative) | Times the negative total has overrun (home screen units) | Read | ||
| AV | 2307 | Totalizer Overflow Counter (Gross) | Times the gross total has overrun (home screen units) | Read | ||
| AVmin | 2400 | Net Flow Totalizer (gal) | Total volume, forward minus reverse (can be negative) | gal | Read | |
| AVmin | 2401 | Positive Flow Totalizer (gal) | Total volume, forward flow only | gal | Read | |
| AV | 2402 | Negative Flow Totalizer (gal) | Total volume, reverse flow only | gal | Read | |
| AV | 2403 | Gross Flow Totalizer (gal) | Total volume, forward plus reverse | gal | Read | |
| AV | 2500 | Net Flow Totalizer (liters) | Total volume, forward minus reverse (can be negative) | l | Read | |
| AV | 2501 | Positive Flow Totalizer (liters) | Total volume, forward flow only | l | Read | |
| AV | 2502 | Negative Flow Totalizer (liters) | Total volume, reverse flow only | l | Read | |
| AV | 2503 | Gross Flow Totalizer (liters) | Total volume, forward plus reverse | l | Read | |
| LAV | 2600 | Net Flow Totalizer (home screen units) | Total volume, forward minus reverse (can be negative) (64-bit) | home screen units | Read | |
| LAV | 2601 | Positive Flow Totalizer (home screen units) | Total volume, forward flow only (64-bit) | home screen units | Read | |
| LAV | 2602 | Negative Flow Totalizer (home screen units) | Total volume, reverse flow only (64-bit) | home screen units | Read | |
| LAV | 2603 | Gross Flow Totalizer (home screen units) | Total volume, forward plus reverse (64-bit) | home screen units | Read | |
| LAV | 2700 | Net Flow Totalizer (gal) | Total volume, forward minus reverse (can be negative) (64-bit) | gal | Read | |
| LAV | 2701 | Positive Flow Totalizer (gal) | Total volume, forward flow only (64-bit) | gal | Read | |
| LAV | 2702 | Negative Flow Totalizer (gal) | Total volume, reverse flow only (64-bit) | gal | Read | |
| LAV | 2703 | Gross Flow Totalizer (gal) | Total volume, forward plus reverse (64-bit) | gal | Read | |
| LAV | 2800 | Net Flow Totalizer (liters) | Total volume, forward minus reverse (can be negative) (64-bit) | l | Read | |
| LAV | 2801 | Positive Flow Totalizer (liters) | Total volume, forward flow only (64-bit) | l | Read | |
| LAV | 2802 | Negative Flow Totalizer (liters) | Total volume, reverse flow only (64-bit) | l | Read | |
| LAV | 2803 | Gross Flow Totalizer (liters) | Total volume, forward plus reverse (64-bit) | l | Read | |
| MV | 3000 | Flow Rate Units | Home screen flow rate units | Read | ||
| MV | 3002 | Velocity Units | Home screen velocity units | Read | ||
| MV | 3003 | Flow Total Units | Home screen totalizer units | Read | ||
| AV | 4000 | Low Flow Cutoff | Below this flow, show zero and stop totalizing | Write | ||
| AV | 4001 | Low Signal Cutoff | Below this signal, show zero, stop totalizing, low signal error | Write | ||
| AV | 4002 | High Signal Cutoff | Above this signal, show zero, stop totalizing, oversaturation error | Write | ||
| AVmin | 5500 | Signal Strength | Ultrasonic signal strength | Read | ||
| BO | 0 | Reset Totalizers | Resets all flow totals to zero | Write | ||
| BO | 1 | Unlatch Alarms | Unlatches outputs held in alarm | Write | ||
| BO | 2 | Clear Alarm History | Clears errors, alarms and event codes | Write | ||
| BO | 3 | Reboot Device | Reboots the meter | Write |
No points match these filters.
Object ID lookup: Badger Meter Dynasonics TFX-500w clamp-on ultrasonic flow meter point IDs by name
AV600Flow Rate on ScreenAV601Velocity on ScreenAV602Delta Time Filtered (ns)AV800Flow Rate (gal/min)AV801Velocity (ft/sec)AV1000Flow Rate (l/min)AV1001Velocity (m/sec)AV2300Net Flow Totalizer (home screen units)AV2301Positive Flow Totalizer (home screen units)AV2302Negative Flow Totalizer (home screen units)AV2303Gross Flow Totalizer (home screen units)AV2304Totalizer Overflow Counter (Net)AV2305Totalizer Overflow Counter (Positive)AV2306Totalizer Overflow Counter (Negative)AV2307Totalizer Overflow Counter (Gross)AV2400Net Flow Totalizer (gal)AV2401Positive Flow Totalizer (gal)AV2402Negative Flow Totalizer (gal)AV2403Gross Flow Totalizer (gal)AV2500Net Flow Totalizer (liters)AV2501Positive Flow Totalizer (liters)AV2502Negative Flow Totalizer (liters)AV2503Gross Flow Totalizer (liters)LAV2600Net Flow Totalizer (home screen units)LAV2601Positive Flow Totalizer (home screen units)LAV2602Negative Flow Totalizer (home screen units)LAV2603Gross Flow Totalizer (home screen units)LAV2700Net Flow Totalizer (gal)LAV2701Positive Flow Totalizer (gal)LAV2702Negative Flow Totalizer (gal)LAV2703Gross Flow Totalizer (gal)LAV2800Net Flow Totalizer (liters)LAV2801Positive Flow Totalizer (liters)LAV2802Negative Flow Totalizer (liters)LAV2803Gross Flow Totalizer (liters)MV3000Flow Rate UnitsMV3002Velocity UnitsMV3003Flow Total UnitsAV4000Low Flow CutoffAV4001Low Signal CutoffAV4002High Signal CutoffAV5500Signal StrengthBO0Reset TotalizersBO1Unlatch AlarmsBO2Clear Alarm HistoryBO3Reboot Device
Integration notes
- Each total exists three ways: in home-screen units, gallons and liters; each as an AV (32-bit) and an LAV (64-bit). Map one set.
- Names are the manual's descriptive names.
- Writes need the meter's BACnet access setting to allow read/write; it can be set read-only.
- MV 3001 is not listed.
- Source: TFX-500w Clamp-On Meter BACnet MS/TP Protocol User Manual TTM-UM-02773-EN-04 (January 2022).
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 Dynasonics TFX-500w clamp-on ultrasonic flow meter (BACnet MS/TP) 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 Badger Meter Dynasonics TFX-500w clamp-on ultrasonic flow meter (BACnet MS/TP)
How many BACnet points does the Badger Meter Dynasonics TFX-500w clamp-on ultrasonic flow meter (BACnet MS/TP) have?
This list has 46 BACnet objects: 27 analog values, 4 binary outputs, 3 multi-state values, 12 large analog values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Badger Meter Dynasonics TFX-500w clamp-on ultrasonic flow meter (BACnet MS/TP) BACnet points are writable?
7 of the 46 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 Badger Meter Dynasonics TFX-500w clamp-on ultrasonic flow meter (BACnet MS/TP) BACnet documentation?
The source is TFX-500w Clamp-On Meter BACnet MS/TP Protocol User Manual (TTM-UM-02773-EN-04), revision 2022-01, published free by Badger Meter at https://badgermeter.widen.net/content/vyanyuy7x7/original?download=true&x.app=api.
What are the minimum BACnet points to integrate the Badger Meter Dynasonics TFX-500w clamp-on ultrasonic flow meter (BACnet MS/TP)?
Start with AV 800 Flow Rate (gal/min) (Flow rate, gpm); AV 2401 Positive Flow Totalizer (gal) (Forward flow total, gallons); AV 2400 Net Flow Totalizer (gal) (Net (forward minus reverse) total, gallons); AV 801 Velocity (ft/sec) (Fluid velocity, ft/s); AV 5500 Signal Strength (Ultrasonic signal strength (low = bad reading)).
How do I enable BMS control of the Badger Meter Dynasonics TFX-500w clamp-on ultrasonic flow meter (BACnet MS/TP)?
BACnet writes only work when the meter's Access setting in the BACnet MS/TP menu is read/write.
How do I check these points on the real Dynasonics TFX-500w clamp-on ultrasonic flow meter (BACnet MS/TP)?
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 Badger Meter BACnet points lists
- Ultrasonic flow and BTU meter (BACnet MS/TP)
Badger Meter Dynasonics TFX-5000 ultrasonic flow / energy meter (BACnet MS/TP)
Badger Meter Dynasonics TFX-5000 clamp-on ultrasonic flow meters and TFX-5000 energy (BTU) meters, using the built-in RS-485 port in BACnet MS/TP mode.
Also known as: TFX-5000, Dynasonics TFX-5000, TFX-5000 BACnet, TFX-5000 Energy, TTM-UM-03074, clamp-on BTU meter BACnet, Badger ultrasonic flow meter BACnet - Ultrasonic flow and BTU meter (BACnet IP card)
Badger Meter Dynasonics TFX-5000 ultrasonic flow / energy meter (BACnet/IP card)
Badger Meter Dynasonics TFX-5000 flow and energy (BTU) meters fitted with the optional Ethernet card set to BACnet/IP.
Also known as: TFX-5000 BACnet/IP, TFX-5000 Ethernet, Dynasonics TFX-5000 BACnet IP, TTM-UM-03250, TFX-5000 Energy BACnet IP - Electromagnetic flow meter (BACnet daughterboard)
Badger Meter ModMAG M2000 electromagnetic flow meter (BACnet MS/TP and BACnet/IP)
Badger Meter ModMAG M2000 electromagnetic flow meters with the BACnet MS/TP or BACnet/IP communication daughterboard.
Also known as: M2000, ModMAG M2000, M2000 BACnet, M2000 mag meter BACnet, MAG-UM-03547, MAG-UM-03548, Badger mag meter BACnet - Vortex flow / BTU energy meter
Badger Meter VN2000 vortex flow meter (BACnet MS/TP)
Badger Meter VN2000 vortex flow meters for steam, gas and liquids (including BTU/energy models) with the optional BACnet MS/TP card.
Also known as: VN2000, Badger VN2000 vortex, VN2000 BTU meter
Source: TFX-500w Clamp-On Meter BACnet MS/TP Protocol User Manual · TTM-UM-02773-EN-04 · rev. 2022-01. Object names, instances and units are reproduced as published; descriptions are our own.