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Other equipment (BACnet relay / fan safety module) · BACnet points list
Functional Devices RIBMNWLB-7-BC fan safety circuit / relay module BACnet points list
Updated 12 November 2026
A BACnet MS/TP module with two relays and eight binary inputs. From the factory it runs a stand-alone fan safety circuit: BO1 only closes when BI1-BI6 are all closed, BI1-BI6 can latch, and BO2 follows BI7. The safety function can be turned off so it works as a plain 2-relay, 7-input RIB.
This page lists 11 BACnet objects for the Functional Devices RIBMNWLB-7-BC fan safety circuit / relay module — 3 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
- RIBMNWLB-7-BC fan safety circuit / relay module
- Equipment
- Other equipment (BACnet relay / fan safety module)
- Equipment type
- Other equipment
- BACnet objects
- 11 (3 writable)
- Transport
- BACnet MS/TP
- Firmware
- Firmware 2.04, application 1.7
- Default device instance
- 277000
- Also known as
- RIBMNWLB-7-BC, RIBTWLB-7-BC, RIBTWLB-7-BC-N4
- Source document
- RIBMNWLB-7-BC PICS v1.7 · rev. 2019-07-16
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 RIBMNWLB-7-BC fan safety circuit / relay module
In fan-safety mode, start the fan through BO1 and read BI1-BI6 to find which safety tripped; clear latches with BV1. To use it as a plain relay module, set AND_Function_Enable (BO1) and Bind_BI7 (BO2) to 0.
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 | Fan start relay (AND of BI1-BI6 in safety mode) | Command |
| BV 1 | CLR Latches | Write 1 to reset latched safeties | Write |
| BI 7 | BI7 | Fan current status (safety mode) | Read |
| BI 1 | BI1 | Safety input 1 | Read |
| BI 2 | BI2 | Safety input 2 | Read |
Enable & remote start
Fan-safety mode is on by default (BO1 proprietary property AND_Function_Enable = 1); set it to 0 to drive BO1 freely.
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.
- DIP switch hand/off/auto on BO1 and BO2 acts at priority 8; the AND and BI7 bindings act at priority 12.
Watch out for
- A BMS write to BO1 at a priority below 12 is overridden while the AND function holds it off.
- Latched safety inputs stay latched until BV1, the local pushbutton or a power cycle resets them.
Functional Devices RIBMNWLB-7-BC fan safety circuit / relay module 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 | |||||
|---|---|---|---|---|---|---|
| BOmin | 1 | BO1 | Relay 1; fan-safety AND output by default | Command | ||
| BO | 2 | BO2 | Relay 2; bound to BI7 by default | Command | ||
| BImin | 1 | BI1 | Binary input 1; safety/latching input in fan-safety mode | Read | ||
| BImin | 2 | BI2 | Binary input 2; safety/latching input in fan-safety mode | Read | ||
| BI | 3 | BI3 | Binary input 3; safety/latching input in fan-safety mode | Read | ||
| BI | 4 | BI4 | Binary input 4; safety/latching input in fan-safety mode | Read | ||
| BI | 5 | BI5 | Binary input 5; safety/latching input in fan-safety mode | Read | ||
| BI | 6 | BI6 | Binary input 6; safety/latching input in fan-safety mode | Read | ||
| BImin | 7 | BI7 | Binary input 7; fan current status in fan-safety mode | Read | ||
| BI | 8 | BI8 | Latch reset pushbutton (hardware, not general purpose) | Read | ||
| BVmin | 1 | CLR Latches | Write 1 to clear latched inputs; returns to 0 | Write |
No points match these filters.
Object ID lookup: Functional Devices RIBMNWLB-7-BC fan safety circuit / relay module 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...). BV1 defaults to "CLR Latches".
- Fan-safety logic is set through proprietary properties (277001-277009) on BO1, BO2 and BI1-BI6, not through extra objects: AND_Function_Enable, AND_Output_Stat and AND_Output_Priority (default 12) on BO1, Bind_BI7 and its priority (default 12) on BO2, Latch_Enabled and Input_Latched on BI1-BI6.
- DIP switches give hand ON/OFF/AUTO on BO1 and BO2 at priority 8 (writable); BI1-BI6 latching is chosen by DIP switch.
- BI8 is wired to the latch reset pushbutton, not a field input.
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 RIBMNWLB-7-BC fan safety circuit / relay module 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 RIBMNWLB-7-BC fan safety circuit / relay module
How many BACnet points does the Functional Devices RIBMNWLB-7-BC fan safety circuit / relay module have?
This list has 11 BACnet objects: 8 binary inputs, 2 binary outputs, 1 binary value. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Functional Devices RIBMNWLB-7-BC fan safety circuit / relay module BACnet points are writable?
3 of the 11 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 RIBMNWLB-7-BC fan safety circuit / relay module BACnet documentation?
The source is RIBMNWLB-7-BC PICS v1.7, revision 2019-07-16, published free by Functional Devices at https://www.functionaldevices.com/sfsites/c/cms/delivery/media/MCTG7KSXWEOFDSXGKWMOUZ5OPNQI.
What are the minimum BACnet points to integrate the Functional Devices RIBMNWLB-7-BC fan safety circuit / relay module?
Start with BO 1 BO1 (Fan start relay (AND of BI1-BI6 in safety mode)); BV 1 CLR Latches (Write 1 to reset latched safeties); BI 7 BI7 (Fan current status (safety mode)); BI 1 BI1 (Safety input 1); BI 2 BI2 (Safety input 2).
How do I enable BMS control of the Functional Devices RIBMNWLB-7-BC fan safety circuit / relay module?
Fan-safety mode is on by default (BO1 proprietary property AND_Function_Enable = 1); set it to 0 to drive BO1 freely.
How do I check these points on the real RIBMNWLB-7-BC fan safety circuit / relay module?
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: RIBMNWLB-7-BC PICS v1.7 · rev. 2019-07-16. Object names, instances and units are reproduced as published; descriptions are our own.