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Functional Devices RIBTW24B-BCAO BACnet relay with analog output BACnet points list
Updated 12 November 2026
A BACnet MS/TP relay module with one relay (BO1), one analog output in percent (AO1), one binary input and one analog input. All four objects are plain I/O; there is no on-board control logic.
This page lists 4 BACnet objects for the Functional Devices RIBTW24B-BCAO BACnet relay with analog output — 2 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Functional Devices’s own free documentation, linked below.
- Manufacturer
- Functional Devices
- Model
- RIBTW24B-BCAO BACnet relay with analog output
- Equipment
- Other equipment (BACnet relay / I/O module)
- Equipment type
- Other equipment
- BACnet objects
- 4 (2 writable)
- Transport
- BACnet MS/TP
- Firmware
- Firmware 2.04, application 1.5 (the device object table prints 1.3)
- Default device instance
- 277000
- Also known as
- RIBTW24B-BCAO, BACnet RIB analog output
- Source document
- RIBTW24B-BCAO PICS v1.5 · rev. 2017-05-17
Reference only, provided as-is: verify against Functional Devices’s current documentation and the live device before use. Not official Functional Devices information. Terms of use.
BMS integration notes: Functional Devices RIBTW24B-BCAO BACnet relay with analog output
Write BO1 for the relay and AO1 for the 0-100 % output; read BI1 and AI1.
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 |
|---|---|---|---|
| BO 1 | BO1 | Relay command | Command |
| AO 1 | AO1 | Analog output, 0-100 % | Command |
| BI 1 | BI1 | Binary input status | Read |
| AI 1 | AI1 | Analog input value | Read |
Network setup
- The PICS prints the device object ID default as DE277000 (vendor ID 277); it is writable.
- MS/TP master; baud rates are listed in the PICS. Max_Master defaults to 127.
Functional Devices RIBTW24B-BCAO BACnet relay with analog output 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 | |||||
|---|---|---|---|---|---|---|
| AImin | 1 | AI1 | Analog input: 0-5/0-10 Vdc or 10K T2/T3 thermistor | any BACnet unit (writable) | Read | |
| AOmin | 1 | AO1 | Analog output, 0-100 % | % | Command | |
| BImin | 1 | BI1 | Binary input | Read | Inactive/Active text user-set | |
| BOmin | 1 | BO1 | Relay output | Command |
No points match these filters.
Object ID lookup: Functional Devices RIBTW24B-BCAO BACnet relay with analog output point IDs by name
Integration notes
- Object names are user-writable and the PICS prints no factory default name, so each object is listed by its printed ID (BI1, BO1...).
- The PICS prints the AO identifier as "A01"; it is Analog Output 1.
- AO1 and BO1 have 16-level priority arrays; AO1 is fixed at 0-100 %.
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 RIBTW24B-BCAO BACnet relay with analog output 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 Functional Devices RIBTW24B-BCAO BACnet relay with analog output
How many BACnet points does the Functional Devices RIBTW24B-BCAO BACnet relay with analog output have?
This list has 4 BACnet objects: 1 analog input, 1 analog output, 1 binary input, 1 binary output. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Functional Devices RIBTW24B-BCAO BACnet relay with analog output BACnet points are writable?
2 of the 4 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 Functional Devices RIBTW24B-BCAO BACnet relay with analog output BACnet documentation?
The source is RIBTW24B-BCAO PICS v1.5, revision 2017-05-17, published free by Functional Devices at https://www.functionaldevices.com/sfsites/c/cms/delivery/media/MCMZAXTTRWMFFHVOP2XN54A2ANAI.
What are the minimum BACnet points to integrate the Functional Devices RIBTW24B-BCAO BACnet relay with analog output?
Start with BO 1 BO1 (Relay command); AO 1 AO1 (Analog output, 0-100 %); BI 1 BI1 (Binary input status); AI 1 AI1 (Analog input value).
How do I check these points on the real RIBTW24B-BCAO BACnet relay with analog output?
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.
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Source: RIBTW24B-BCAO PICS v1.5 · rev. 2017-05-17. Object names, instances and units are reproduced as published; descriptions are our own.