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BTU (energy) meter, two-channel · BACnet points list
ONICON System-1000 Flow and Energy Measurement System BACnet points list
Updated 6 November 2026
The System-1000 is a one- or two-channel BTU meter with native BACnet MS/TP or BACnet IP. Per channel it exposes energy rate, flow, supply, return and delta temperature, an aux input and COP as Analog Inputs, and energy, volume and aux totals (non-resettable, year-to-date, previous year and resettable user totals) as Analog Values. Binary Inputs give mode, alarms and a system fault.
This page lists 83 BACnet objects for the ONICON System-1000 Flow and Energy Measurement System — 14 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from ONICON’s own free documentation, linked below.
- Manufacturer
- ONICON
- Model
- System-1000 Flow and Energy Measurement System
- Equipment
- BTU (energy) meter, two-channel
- Equipment type
- Thermostats, sensors & meters
- BACnet objects
- 83 (14 writable)
- Transport
- BACnet MS/TP, BACnet IP
- Firmware
- Firmware 1.x (PICS: firmware 1.3.0, application 1.26.1)
- Default device instance
- 57017
- Also known as
- System-1000, SYS-1000, SYS-1100-111, SYS-1100-121, SYS-1200-111, SYS-1200-121, ONICON System 1000 BTU meter
Reference only, provided as-is: verify against ONICON’s current documentation and the live device before use. Not official ONICON information. Terms of use.
BMS integration notes: ONICON System-1000 Flow and Energy Measurement System
Set the MS/TP address (default 128 is a slave address, so it must be changed to 0-127) or the IP settings from the meter menu, then power-cycle. Read energy rate, flow, temperatures and the energy totals for each channel, plus the alarm and fault BIs.
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 |
|---|---|---|---|
| AI 0 | Energy Rate Ch. 1 | Channel 1 thermal energy rate | Read |
| AI 1 | Volume Rate Ch. 1 | Channel 1 flow rate | Read |
| AI 3 | Supply Temp Ch. 1 | Channel 1 supply temperature | Read |
| AI 4 | Return Temp Ch. 1 | Channel 1 return temperature | Read |
| AV 0 | Energy Total Mode 1 Ch. 1 | Channel 1 energy total, non-resettable (mode 1) | Read |
| AV 8 | Volume Total Mode 1 Ch. 1 | Channel 1 volume total, non-resettable (mode 1) | Read |
| BI 0 | Mode Indication Ch. 1 | Channel 1 mode: cooling/forward or heating/reverse | Read |
| BI 1 | Alarm Ch. 1 | Channel 1 reading outside its limits | Read |
| BI 9 | System Fault | Meter system error | Read |
Network setup
- Menu: User Configurations > Network > BACnet MS/TP or BACnet UDP/IP.
- MS/TP defaults: 38400 baud, address 128 (slave, set 0-127 to communicate), device instance 57017, Max Master 127.
- BACnet IP defaults: IP 192.168.1.24, mask 255.255.255.0, UDP port 47808, instance 57017.
- Power-cycle the meter after any network change.
Watch out for
- The default MS/TP address 128 is a slave address; the meter will not join the token ring until it is set to 0-127.
- Two objects are printed as AI 6; check which instance holds Delta Temp Ch. 1.
- Only the User totals reset (write 0); the other totals are non-resettable.
ONICON System-1000 Flow and Energy Measurement System 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.
| Description | States | |||||
|---|---|---|---|---|---|---|
| AImin | 0 | Energy Rate Ch. 1 | Thermal energy rate | Btu/h (configurable) | Read | |
| AImin | 1 | Volume Rate Ch. 1 | Flow rate (result if channels are combined) | gpm (configurable) | Read | |
| AI | 2 | Volume Rate Primary Only Ch. 1 | Primary flow meter only | gpm (configurable) | Read | |
| AImin | 3 | Supply Temp Ch. 1 | Supply temperature | °F (configurable) | Read | |
| AImin | 4 | Return Temp Ch. 1 | Return temperature | °F (configurable) | Read | |
| AI | 5 | Delta Temp Ch. 1 | Supply-return temperature difference | °F (configurable) | Read | |
| AI | 6 | AUX Input Ch. 1 | Secondary (aux) rate input, if used | Read | ||
| AI | 7 | Efficiency COP Ch. 1 | COP; needs an electric meter on the aux input | Read | ||
| AI | 8 | Energy Rate Ch. 2 | Thermal energy rate | Btu/h (configurable) | Read | |
| AI | 9 | Volume Rate Ch. 2 | Flow rate (result if channels are combined) | gpm (configurable) | Read | |
| AI | 10 | Volume Rate Primary Only Ch. 2 | Primary flow meter only | gpm (configurable) | Read | |
| AI | 11 | Supply Temp Ch. 2 | Supply temperature | °F (configurable) | Read | |
| AI | 12 | Return Temp Ch. 2 | Return temperature | °F (configurable) | Read | |
| AI | 13 | Delta Temp Ch. 2 | Supply-return temperature difference | °F (configurable) | Read | |
| AI | 14 | AUX Input Ch. 2 | Secondary (aux) rate input, if used | Read | ||
| AI | 15 | Efficiency COP Ch. 2 | COP; needs an electric meter on the aux input | Read | ||
| AI | 16 | Therm Energy Net Rate Ch1-Ch2 | Thermal energy rate | Btu/h (configurable) | Read | |
| AVmin | 0 | Energy Total Mode 1 Ch. 1 | Energy total, non-resettable (mode 1) | Read | ||
| AV | 1 | Energy Total Mode 2 Ch. 1 | Energy total, non-resettable (mode 2: reverse/heating) | Read | ||
| AV | 2 | YTD Eng Total Mode 1 Ch. 1 | Energy total, year-to-date (mode 1) | Read | ||
| AV | 3 | YTD Eng Total Mode 2 Ch. 1 | Energy total, year-to-date (mode 2: reverse/heating) | Read | ||
| AV | 4 | PrevYr Eng Total Mode 1 Ch. 1 | Energy total, previous year (mode 1) | Read | ||
| AV | 5 | PrevYr Eng Total Mode 2 Ch. 1 | Energy total, previous year (mode 2: reverse/heating) | Read | ||
| AV | 6 | User Energy Total Mode 1 Ch. 1 | Energy total, resettable (mode 1) | Write | ||
| AV | 7 | User Energy Total Mode 2 Ch. 1 | Energy total, resettable (mode 2: reverse/heating) | Write | ||
| AVmin | 8 | Volume Total Mode 1 Ch. 1 | Volume total, non-resettable (mode 1) | Read | ||
| AV | 9 | Volume Total Mode 2 Ch. 1 | Volume total, non-resettable (mode 2: reverse/heating) | Read | ||
| AV | 10 | YTD Vol Total Mode 1 Ch. 1 | Volume total, year-to-date (mode 1) | Read | ||
| AV | 11 | YTD Vol Total Mode 2 Ch. 1 | Volume total, year-to-date (mode 2: reverse/heating) | Read | ||
| AV | 12 | PrevYr Vol Total Mode 1 Ch. 1 | Volume total, previous year (mode 1) | Read | ||
| AV | 13 | PrevYr Vol Total Mode 2 Ch. 1 | Volume total, previous year (mode 2: reverse/heating) | Read | ||
| AV | 14 | User Vol Total Mode 1 Ch. 1 | Volume total, resettable (mode 1) | Write | ||
| AV | 15 | User Vol Total Mode 2 Ch. 1 | Volume total, resettable (mode 2: reverse/heating) | Write | ||
| AV | 16 | AuxIn Total Ch. 1 | Aux rate meter total, non-resettable | Read | ||
| AV | 17 | YTD Aux Total Ch. 1 | Aux rate meter total, year-to-date | Read | ||
| AV | 18 | PrevYr Aux Total Ch. 1 | Aux rate meter total, previous year | Read | ||
| AV | 19 | User Aux Total Ch. 1 | Aux rate meter total, resettable | Write | ||
| AV | 20 | Energy Total Mode 1 Ch. 2 | Energy total, non-resettable (mode 1) | Read | ||
| AV | 21 | Energy Total Mode 2 Ch. 2 | Energy total, non-resettable (mode 2: reverse/heating) | Read | ||
| AV | 22 | YTD Eng Total Mode 1 Ch. 2 | Energy total, year-to-date (mode 1) | Read | ||
| AV | 23 | YTD Eng Total Mode 2 Ch. 2 | Energy total, year-to-date (mode 2: reverse/heating) | Read | ||
| AV | 24 | PrevYr Eng Total Mode 1 Ch. 2 | Energy total, previous year (mode 1) | Read | ||
| AV | 25 | PrevYr Eng Total Mode 2 Ch. 2 | Energy total, previous year (mode 2: reverse/heating) | Read | ||
| AV | 26 | User Energy Total Mode 1 Ch. 2 | Energy total, resettable (mode 1) | Write | ||
| AV | 27 | User Energy Total Mode 2 Ch. 2 | Energy total, resettable (mode 2: reverse/heating) | Write | ||
| AV | 28 | Volume Total Mode 1 Ch. 2 | Volume total, non-resettable (mode 1) | Read | ||
| AV | 29 | Volume Total Mode 2 Ch. 2 | Volume total, non-resettable (mode 2: reverse/heating) | Read | ||
| AV | 30 | YTD Vol Total Mode 1 Ch. 2 | Volume total, year-to-date (mode 1) | Read | ||
| AV | 31 | YTD Vol Total Mode 2 Ch. 2 | Volume total, year-to-date (mode 2: reverse/heating) | Read | ||
| AV | 32 | PrevYr Vol Total Mode 1 Ch. 2 | Volume total, previous year (mode 1) | Read | ||
| AV | 33 | PrevYr Vol Total Mode 2 Ch. 2 | Volume total, previous year (mode 2: reverse/heating) | Read | ||
| AV | 34 | User Vol Total Mode 1 Ch. 2 | Volume total, resettable (mode 1) | Write | ||
| AV | 35 | User Vol Total Mode 2 Ch. 2 | Volume total, resettable (mode 2: reverse/heating) | Write | ||
| AV | 36 | Auxin Total Ch. 2 | Aux rate meter total, non-resettable | Read | ||
| AV | 37 | YTD Aux Total Ch. 2 | Aux rate meter total, year-to-date | Read | ||
| AV | 38 | PrevYr Aux Total Ch. 2 | Aux rate meter total, previous year | Read | ||
| AV | 39 | User Aux Total Ch. 2 | Aux rate meter total, resettable | Write | ||
| AV | 40 | Aux Pulse Input Total 1 | Aux pulse total, non-resettable | Read | ||
| AV | 41 | Aux Pulse Input YTD Total 1 | Aux pulse total, year-to-date | Read | ||
| AV | 42 | Aux Pulse Input PrevYr Total 1 | Aux pulse total, previous year | Read | ||
| AV | 43 | Aux Pulse Input User Total 1 | Aux pulse total, resettable | Write | ||
| AV | 44 | Aux Pulse Input Total 2 | Aux pulse total, non-resettable | Read | ||
| AV | 45 | Aux Pulse Input YTD Total 2 | Aux pulse total, year-to-date | Read | ||
| AV | 46 | Aux Pulse Input PrevYr Total 2 | Aux pulse total, previous year | Read | ||
| AV | 47 | Aux Pulse Input User Total 2 | Aux pulse total, resettable | Write | ||
| AV | 48 | Aux Pulse Input Total 3 | Aux pulse total, non-resettable | Read | ||
| AV | 49 | Aux Pulse Input YTD Total 3 | Aux pulse total, year-to-date | Read | ||
| AV | 50 | Aux Pulse Input PrevYr Total 3 | Aux pulse total, previous year | Read | ||
| AV | 51 | Aux Pulse Input User Total 3 | Aux pulse total, resettable | Write | ||
| AV | 52 | Aux Pulse Input Total 4 | Aux pulse total, non-resettable | Read | ||
| AV | 53 | Aux Pulse Input YTD Total 4 | Aux pulse total, year-to-date | Read | ||
| AV | 54 | Aux Pulse Input PrevYr Total 4 | Aux pulse total, previous year | Read | ||
| AV | 55 | Aux Pulse Input User Total 4 | Aux pulse total, resettable | Write | ||
| AV | 56 | Run hours | Elapsed system run time | h | Read | |
| BImin | 0 | Mode Indication Ch. 1 | Operating mode: Mode 1 cooling/forward, Mode 2 heating/reverse | Read | ||
| BImin | 1 | Alarm Ch. 1 | Flow, temp, energy or aux reading outside limits | Read | ||
| BI | 2 | Mode Indication Ch. 2 | Operating mode: Mode 1 cooling/forward, Mode 2 heating/reverse | Read | ||
| BI | 3 | Alarm Ch. 2 | Flow, temp, energy or aux reading outside limits | Read | ||
| BI | 4 | Aux In Alarm 1 | Digital input alarm (if set as alarm input) | Read | ||
| BI | 5 | Aux In Alarm 2 | Digital input alarm (if set as alarm input) | Read | ||
| BI | 6 | Aux In Alarm 3 | Digital input alarm (if set as alarm input) | Read | ||
| BI | 7 | Aux In Alarm 4 | Digital input alarm (if set as alarm input) | Read | ||
| BImin | 9 | System Fault | System error | Read |
No points match these filters.
Object ID lookup: ONICON System-1000 Flow and Energy Measurement System point IDs by name
AI0Energy Rate Ch. 1AI1Volume Rate Ch. 1AI2Volume Rate Primary Only Ch. 1AI3Supply Temp Ch. 1AI4Return Temp Ch. 1AI5Delta Temp Ch. 1AI6AUX Input Ch. 1AI7Efficiency COP Ch. 1AI8Energy Rate Ch. 2AI9Volume Rate Ch. 2AI10Volume Rate Primary Only Ch. 2AI11Supply Temp Ch. 2AI12Return Temp Ch. 2AI13Delta Temp Ch. 2AI14AUX Input Ch. 2AI15Efficiency COP Ch. 2AI16Therm Energy Net Rate Ch1-Ch2AV0Energy Total Mode 1 Ch. 1AV1Energy Total Mode 2 Ch. 1AV2YTD Eng Total Mode 1 Ch. 1AV3YTD Eng Total Mode 2 Ch. 1AV4PrevYr Eng Total Mode 1 Ch. 1AV5PrevYr Eng Total Mode 2 Ch. 1AV6User Energy Total Mode 1 Ch. 1AV7User Energy Total Mode 2 Ch. 1AV8Volume Total Mode 1 Ch. 1AV9Volume Total Mode 2 Ch. 1AV10YTD Vol Total Mode 1 Ch. 1AV11YTD Vol Total Mode 2 Ch. 1AV12PrevYr Vol Total Mode 1 Ch. 1AV13PrevYr Vol Total Mode 2 Ch. 1AV14User Vol Total Mode 1 Ch. 1AV15User Vol Total Mode 2 Ch. 1AV16AuxIn Total Ch. 1AV17YTD Aux Total Ch. 1AV18PrevYr Aux Total Ch. 1AV19User Aux Total Ch. 1AV20Energy Total Mode 1 Ch. 2AV21Energy Total Mode 2 Ch. 2AV22YTD Eng Total Mode 1 Ch. 2AV23YTD Eng Total Mode 2 Ch. 2AV24PrevYr Eng Total Mode 1 Ch. 2AV25PrevYr Eng Total Mode 2 Ch. 2AV26User Energy Total Mode 1 Ch. 2AV27User Energy Total Mode 2 Ch. 2AV28Volume Total Mode 1 Ch. 2AV29Volume Total Mode 2 Ch. 2AV30YTD Vol Total Mode 1 Ch. 2AV31YTD Vol Total Mode 2 Ch. 2AV32PrevYr Vol Total Mode 1 Ch. 2AV33PrevYr Vol Total Mode 2 Ch. 2AV34User Vol Total Mode 1 Ch. 2AV35User Vol Total Mode 2 Ch. 2AV36Auxin Total Ch. 2AV37YTD Aux Total Ch. 2AV38PrevYr Aux Total Ch. 2AV39User Aux Total Ch. 2AV40Aux Pulse Input Total 1AV41Aux Pulse Input YTD Total 1AV42Aux Pulse Input PrevYr Total 1AV43Aux Pulse Input User Total 1AV44Aux Pulse Input Total 2AV45Aux Pulse Input YTD Total 2AV46Aux Pulse Input PrevYr Total 2AV47Aux Pulse Input User Total 2AV48Aux Pulse Input Total 3AV49Aux Pulse Input YTD Total 3AV50Aux Pulse Input PrevYr Total 3AV51Aux Pulse Input User Total 3AV52Aux Pulse Input Total 4AV53Aux Pulse Input YTD Total 4AV54Aux Pulse Input PrevYr Total 4AV55Aux Pulse Input User Total 4AV56Run hoursBI0Mode Indication Ch. 1BI1Alarm Ch. 1BI2Mode Indication Ch. 2BI3Alarm Ch. 2BI4Aux In Alarm 1BI5Aux In Alarm 2BI6Aux In Alarm 3BI7Aux In Alarm 4BI9System Fault
Integration notes
- The object list prints 'AI 6' twice: once for Delta Temp Ch. 1 and once for AUX Input Ch. 1. Delta Temp Ch. 1 is listed here as AI 5, the gap in the sequence; confirm on the meter.
- The table gives no units. Defaults shown are typical US units; energy, flow and temperature units are set on the meter.
- Channel 2 objects (AI 8-15, AV 20-39, BI 2-3) carry data only on two-channel models. AI 16 (net rate between channels) is used only when configured.
- Access is not in the object list. The PICS says the 'user defined' and aux pulse totals can be reset by writing 0; the resettable User totals are marked W here, all else R.
- BI 2 is printed with the description 'current flow direction' and BI 3 with the mode text; the names suggest the descriptions are swapped by one row.
- BI 8 is not listed.
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 System-1000 Flow and Energy Measurement System 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 ONICON System-1000 Flow and Energy Measurement System
How many BACnet points does the ONICON System-1000 Flow and Energy Measurement System have?
This list has 83 BACnet objects: 17 analog inputs, 57 analog values, 9 binary inputs. The exact set on a given unit depends on its firmware, installed options and configuration.
Which ONICON System-1000 Flow and Energy Measurement System BACnet points are writable?
14 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. The source has no read/write column, so this is inferred from object type.
Where is the official ONICON System-1000 Flow and Energy Measurement System BACnet documentation?
The source is System-1000 Flow and Energy Measurement System Installation and Operation Guide (DOC-0008270 Rev.B), published free by ONICON at https://www.onicon.com/wp-content/uploads/2026/05/System-1000-manual-DOC-0008270.pdf.
What are the minimum BACnet points to integrate the ONICON System-1000 Flow and Energy Measurement System?
Start with AI 0 Energy Rate Ch. 1 (Channel 1 thermal energy rate); AI 1 Volume Rate Ch. 1 (Channel 1 flow rate); AI 3 Supply Temp Ch. 1 (Channel 1 supply temperature); AI 4 Return Temp Ch. 1 (Channel 1 return temperature); AV 0 Energy Total Mode 1 Ch. 1 (Channel 1 energy total, non-resettable (mode 1)); AV 8 Volume Total Mode 1 Ch. 1 (Channel 1 volume total, non-resettable (mode 1)); BI 0 Mode Indication Ch. 1 (Channel 1 mode: cooling/forward or heating/reverse); BI 1 Alarm Ch. 1 (Channel 1 reading outside its limits); BI 9 System Fault (Meter system error).
How do I check these points on the real System-1000 Flow and Energy Measurement System?
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 ONICON BACnet points lists
- Turbine flow meter (insertion)
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ONICON F-1500 series insertion turbine flow meters with the communication type set to BACnet MS/TP.
Also known as: F-1500, F-1500 Series Turbine Meter, ONICON F-1500 BACnet - Ultrasonic flow meter
ONICON F-4600 Inline Ultrasonic Flow Meter (LCD)
ONICON F-4600 inline ultrasonic flow meters with LCD and the BACnet MS/TP output.
Also known as: F-4600, F-4600-BAC, F4600, ONICON F-4600 - Electromagnetic flow meter
ONICON FT-3000 series (FT-3200) inline electromagnetic flow meter, BACnet MS/TP
ONICON FT-3000 series inline electromagnetic flow meters with the BACnet MS/TP output (PICS model FT-32**-*****-21**).
Also known as: FT-3200, FT-3000, FT-32**-*****-21**, ONICON FT-3000 BACnet - BTU (energy) meter
ONICON System-10-BAC BTU Meter Network Interface
ONICON System-10 BTU meters fitted with the BACnet network interface (BACnet MS/TP or BACnet IP).
Also known as: System-10-BAC, System-10, System 10 BTU meter, ONICON System-10 - BTU (energy) meter
ONICON System-20 BTU Meter
ONICON System-20 BTU meters with the RS485 BACnet MS/TP interface, used on chilled and hot water loops.
Also known as: System-20, System 20, ONICON System-20, S-20 BTU meter - BTU (energy) meter, clamp-on ultrasonic
ONICON System-40 BTU Measurement System
ONICON System-40 BTU measurement systems (clamp-on ultrasonic flow plus supply/return temperature) with the BACnet MS/TP interface.
Also known as: System-40, System 40, System-40-BAC, ONICON System-40
Source: System-1000 Flow and Energy Measurement System Installation and Operation Guide · DOC-0008270 Rev.B. Object names, instances and units are reproduced as published; descriptions are our own.