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Boiler flame safeguard via BACnet gateway · BACnet points list
Cleaver-Brooks CB120 flame safeguard (ProtoNode) BACnet points list
Updated 7 November 2026Unofficial source
A read-only ProtoNode profile for the CB120 flame safeguard: terminal inputs and outputs, status and message codes, flame signal, lockout count, burner minutes and cycles, the last ten lockouts with their burner hours and cycles, and limit/interlock inputs.
This page lists 94 BACnet objects for the Cleaver-Brooks CB120 flame safeguard (ProtoNode) — 0 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from a copy of Cleaver-Brooks’s documentation hosted by watmfg.com, not by Cleaver-Brooks itself, so treat it as unofficial.
- Manufacturer
- Cleaver-Brooks
- Model
- CB120 flame safeguard (ProtoNode)
- Equipment
- Boiler flame safeguard via BACnet gateway
- Equipment type
- Boilers & water heaters
- BACnet objects
- 94 (0 writable)
- Transport
- BACnet MS/TP, BACnet IP
- Firmware
- Not stated
- Default device instance
- 50000 + Modbus Node-ID
- Also known as
- CB120, CB 120, ProtoNode RER, 750-426
- Source document
- Cloud Enabled ProtoNode Gateway Startup Guide (RER/LER) for interfacing Cleaver-Brooks products · 750-426 · rev. 03/2018 (unofficial copy, hosted by watmfg.com)
Reference only, provided as-is: verify against Cleaver-Brooks’s current documentation and the live device before use. Not official Cleaver-Brooks information. Terms of use.
BMS integration notes: Cleaver-Brooks CB120 flame safeguard (ProtoNode)
Read-only. Map the status code, blower and main valve outputs, flame signal and the alarm output, plus the latest lockout message.
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 1 | Status | Burner status code | Read |
| BI 17 | Blower_Out | Blower output on | Read |
| BI 18 | Main_Valve_Out | Main valve output on | Read |
| AI 5 | Flame | Flame signal | Read |
| BI 24 | Alarm_Out | Alarm output | Read |
| AI 11 | LOCKOUT1_MSG | Lockout 1 message code | Read |
Network setup
- BACnet Device Instance = the controller's Modbus Node-ID + Node_Offset (default 50,000), so Node-ID 1 = 50001. Change Node_Offset in the ProtoNode web configurator to pick other instances.
- The ProtoNode RER does BACnet MS/TP or BACnet IP, selected on its S bank DIP switches.
- BACnet MS/TP: one MAC address (1-127) for the whole ProtoNode on the A bank DIP switches; baud on B0-B3 (38400 factory default).
- BACnet IP: default ProtoNode address 192.168.1.24; change it in the web configurator.
Cleaver-Brooks CB120 flame safeguard (ProtoNode) 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 | |||||
|---|---|---|---|---|---|---|
| BI | 1 | Safety_Relay | Modbus 40007, bit 0 | Read | ||
| BI | 2 | Main_Valve_In | Modbus 40007, bit 1 | Read | ||
| BI | 3 | Delayed_Valve_In | Modbus 40007, bit 2 | Read | ||
| BI | 4 | Pilot_Valve_In | Modbus 40007, bit 3 | Read | ||
| BI | 5 | Ignition_In | Modbus 40007, bit 4 | Read | ||
| BI | 6 | Blower_In | Modbus 40007, bit 5 | Read | ||
| BI | 7 | Op_Cntrl | Modbus 40007, bit 6 | Read | ||
| BI | 8 | Run_Intlck | Modbus 40007, bit 7 | Read | ||
| BI | 9 | LAG1 | Modbus 40007, bit 8 | Read | ||
| BI | 10 | LAG2 | Modbus 40007, bit 11 | Read | ||
| BI | 11 | Fuel_Vlv_POC | Modbus 40007, bit 12 | Read | ||
| BI | 12 | High_Fire_Intlck | Modbus 40007, bit 13 | Read | ||
| BI | 13 | Low_Fire_Start | Modbus 40007, bit 14 | Read | ||
| BI | 14 | Ref_AC_Line | Modbus 40007, bit 15 | Read | ||
| BI | 15 | Ignition_Out | Modbus 40008, bit 1 | Read | ||
| BI | 16 | Pilot_Valve_Out | Modbus 40008, bit 2 | Read | ||
| BImin | 17 | Blower_Out | Modbus 40008, bit 3 | Read | ||
| BImin | 18 | Main_Valve_Out | Modbus 40008, bit 4 | Read | ||
| BI | 19 | Delayed_Valve_Out | Modbus 40008, bit 5 | Read | ||
| BI | 20 | Internal_Safety_Out | Modbus 40008, bit 6 | Read | ||
| BI | 21 | LowFireOut | Modbus 40008, bit 8 | Read | ||
| BI | 22 | HighFireOut | Modbus 40008, bit 9 | Read | ||
| BI | 23 | Rel_to_ModOut | Modbus 40008, bit 10 | Read | ||
| BImin | 24 | Alarm_Out | Modbus 40008, bit 11 | Read | ||
| AImin | 1 | Status | Modbus 40001 | Read | ||
| AI | 2 | Msgn | Modbus 40002 | Read | ||
| AI | 3 | Gstat | Modbus 40003 | Read | ||
| AI | 4 | Timer | Modbus 40004 | Read | ||
| AImin | 5 | Flame | Modbus 40005 | Read | ||
| AI | 6 | Logstat | Modbus 40006 | Read | ||
| AI | 7 | Lockout_Count | Modbus 40015 | Read | ||
| AI | 8 | Sysmins | Modbus 40009-10 | Read | ||
| AI | 9 | Bnrmins | Modbus 40011-12 | Read | ||
| AI | 10 | Cycles | Modbus 40013-14 | Read | ||
| AImin | 11 | LOCKOUT1_MSG | Modbus 40016 | Read | ||
| AI | 12 | LOCKOUT1_MODULE | Modbus 40017 | Read | ||
| AI | 13 | LOCKOUT2_MSG | Modbus 40022 | Read | ||
| AI | 14 | LOCKOUT2_MODULE | Modbus 40023 | Read | ||
| AI | 15 | LOCKOUT3_MSG | Modbus 40028 | Read | ||
| AI | 16 | LOCKOUT3_MODULE | Modbus 40029 | Read | ||
| AI | 17 | LOCKOUT4_MSG | Modbus 40034 | Read | ||
| AI | 18 | LOCKOUT4_MODULE | Modbus 40035 | Read | ||
| AI | 19 | LOCKOUT5_MSG | Modbus 40040 | Read | ||
| AI | 20 | LOCKOUT5_MODULE | Modbus 40041 | Read | ||
| AI | 21 | LOCKOUT6_MSG | Modbus 40046 | Read | ||
| AI | 22 | LOCKOUT6_MODULE | Modbus 40047 | Read | ||
| AI | 23 | LOCKOUT7_MSG | Modbus 40052 | Read | ||
| AI | 24 | LOCKOUT7_MODULE | Modbus 40053 | Read | ||
| AI | 25 | LOCKOUT8_MSG | Modbus 40058 | Read | ||
| AI | 26 | LOCKOUT8_MODULE | Modbus 40059 | Read | ||
| AI | 27 | LOCKOUT9_MSG | Modbus 40064 | Read | ||
| AI | 28 | LOCKOUT9_MODULE | Modbus 40065 | Read | ||
| AI | 29 | LOCKOUT10_MSG | Modbus 40070 | Read | ||
| AI | 30 | LOCKOUT10_MODULE | Modbus 40071 | Read | ||
| AI | 31 | LOCKOUT1_BNRHRS | Modbus 40018-19 | Read | ||
| AI | 32 | LOCKOUT1_BNRCYCS | Modbus 40020-21 | Read | ||
| AI | 33 | LOCKOUT2_BNRHRS | Modbus 40024-25 | Read | ||
| AI | 34 | LOCKOUT2_BNRCYCS | Modbus 40026-27 | Read | ||
| AI | 35 | LOCKOUT3_BNRHRS | Modbus 40030-31 | Read | ||
| AI | 36 | LOCKOUT3_BNRCYCS | Modbus 40032-34 | Read | ||
| AI | 37 | LOCKOUT4_BNRHRS | Modbus 40036-37 | Read | ||
| AI | 38 | LOCKOUT4_BNRCYCS | Modbus 40038-39 | Read | ||
| AI | 39 | LOCKOUT5_BNRHRS | Modbus 40042-43 | Read | ||
| AI | 40 | LOCKOUT5_BNRCYCS | Modbus 40044-45 | Read | ||
| AI | 41 | LOCKOUT6_BNRHRS | Modbus 40048-49 | Read | ||
| AI | 42 | LOCKOUT6_BNRCYCS | Modbus 40050-51 | Read | ||
| AI | 43 | LOCKOUT7_BNRHRS | Modbus 40054-55 | Read | ||
| AI | 44 | LOCKOUT7_BNRCYCS | Modbus 40056-57 | Read | ||
| AI | 45 | LOCKOUT8_BNRHRS | Modbus 40060-61 | Read | ||
| AI | 46 | LOCKOUT8_BNRCYCS | Modbus 40062-63 | Read | ||
| AI | 47 | LOCKOUT9_BNRHRS | Modbus 40066-67 | Read | ||
| AI | 48 | LOCKOUT9_BNRCYCS | Modbus 40068-69 | Read | ||
| AI | 49 | LOCKOUT10_BNRHRS | Modbus 40072-73 | Read | ||
| AI | 50 | LOCKOUT10_BNRCYCS | Modbus 40074-75 | Read | ||
| BI | 25 | Op_Control | Modbus 40901, bit 0 | Read | ||
| BI | 26 | Aux_1 | Modbus 40901, bit 1 | Read | ||
| BI | 27 | Aux_2 | Modbus 40901, bit 2 | Read | ||
| BI | 28 | Aux_3 | Modbus 40901, bit 3 | Read | ||
| BI | 29 | High_water | Modbus 40901, bit 4 | Read | ||
| BI | 30 | Low_Water | Modbus 40901, bit 5 | Read | ||
| BI | 31 | High_Oil_Temp | Modbus 40901, bit 6 | Read | ||
| BI | 32 | Low_Oil_Temp | Modbus 40901, bit 7 | Read | ||
| BI | 33 | Low_Oil_Press | Modbus 40902, bit 0 | Read | ||
| BI | 34 | Low_Atom_Media | Modbus 40902, bit 1 | Read | ||
| BI | 35 | Low_Gas_Press | Modbus 40902, bit 2 | Read | ||
| BI | 36 | High_Gas_Press | Modbus 40902, bit 3 | Read | ||
| BI | 37 | Aux_Gas | Modbus 40902, bit 4 | Read | ||
| BI | 38 | High_Press | Modbus 40902, bit 5 | Read | ||
| BI | 39 | High_Temp | Modbus 40902, bit 6 | Read | ||
| BI | 40 | Aux_4 | Modbus 40902, bit 7 | Read | ||
| BI | 41 | Aux_5 | Modbus 40903, bit 0 | Read | ||
| BI | 42 | Aux_6 | Modbus 40903, bit 1 | Read | ||
| BI | 43 | Aux_7 | Modbus 40903, bit 2 | Read | ||
| BI | 44 | Air_Flow | Modbus 40903, bit 3 | Read |
No points match these filters.
Object ID lookup: Cleaver-Brooks CB120 flame safeguard point IDs by name
BI1Safety_RelayBI2Main_Valve_InBI3Delayed_Valve_InBI4Pilot_Valve_InBI5Ignition_InBI6Blower_InBI7Op_CntrlBI8Run_IntlckBI9LAG1BI10LAG2BI11Fuel_Vlv_POCBI12High_Fire_IntlckBI13Low_Fire_StartBI14Ref_AC_LineBI15Ignition_OutBI16Pilot_Valve_OutBI17Blower_OutBI18Main_Valve_OutBI19Delayed_Valve_OutBI20Internal_Safety_OutBI21LowFireOutBI22HighFireOutBI23Rel_to_ModOutBI24Alarm_OutAI1StatusAI2MsgnAI3GstatAI4TimerAI5FlameAI6LogstatAI7Lockout_CountAI8SysminsAI9BnrminsAI10CyclesAI11LOCKOUT1_MSGAI12LOCKOUT1_MODULEAI13LOCKOUT2_MSGAI14LOCKOUT2_MODULEAI15LOCKOUT3_MSGAI16LOCKOUT3_MODULEAI17LOCKOUT4_MSGAI18LOCKOUT4_MODULEAI19LOCKOUT5_MSGAI20LOCKOUT5_MODULEAI21LOCKOUT6_MSGAI22LOCKOUT6_MODULEAI23LOCKOUT7_MSGAI24LOCKOUT7_MODULEAI25LOCKOUT8_MSGAI26LOCKOUT8_MODULEAI27LOCKOUT9_MSGAI28LOCKOUT9_MODULEAI29LOCKOUT10_MSGAI30LOCKOUT10_MODULEAI31LOCKOUT1_BNRHRSAI32LOCKOUT1_BNRCYCSAI33LOCKOUT2_BNRHRSAI34LOCKOUT2_BNRCYCSAI35LOCKOUT3_BNRHRSAI36LOCKOUT3_BNRCYCSAI37LOCKOUT4_BNRHRSAI38LOCKOUT4_BNRCYCSAI39LOCKOUT5_BNRHRSAI40LOCKOUT5_BNRCYCSAI41LOCKOUT6_BNRHRSAI42LOCKOUT6_BNRCYCSAI43LOCKOUT7_BNRHRSAI44LOCKOUT7_BNRCYCSAI45LOCKOUT8_BNRHRSAI46LOCKOUT8_BNRCYCSAI47LOCKOUT9_BNRHRSAI48LOCKOUT9_BNRCYCSAI49LOCKOUT10_BNRHRSAI50LOCKOUT10_BNRCYCSBI25Op_ControlBI26Aux_1BI27Aux_2BI28Aux_3BI29High_waterBI30Low_WaterBI31High_Oil_TempBI32Low_Oil_TempBI33Low_Oil_PressBI34Low_Atom_MediaBI35Low_Gas_PressBI36High_Gas_PressBI37Aux_GasBI38High_PressBI39High_TempBI40Aux_4BI41Aux_5BI42Aux_6BI43Aux_7BI44Air_Flow
Integration notes
- Each Cleaver-Brooks controller on the ProtoNode is its own BACnet device; the object instances below are the same on every device.
- The profile has only AI and BI objects and the guide marks none as write points, so all are read-only.
- The guide gives no engineering units or state texts; units appear only where the object name carries them (DEG F / DEG C).
- Where a description is filled in, it gives the register from the guide's Modbus column.
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 CB120 flame safeguard (ProtoNode) 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 Cleaver-Brooks CB120 flame safeguard (ProtoNode)
How many BACnet points does the Cleaver-Brooks CB120 flame safeguard (ProtoNode) have?
This list has 94 BACnet objects: 50 analog inputs, 44 binary inputs. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Cleaver-Brooks CB120 flame safeguard (ProtoNode) BACnet points are writable?
None of the listed objects are marked writable in the source documentation.
Where is the official Cleaver-Brooks CB120 flame safeguard (ProtoNode) BACnet documentation?
Cleaver-Brooks does not publish it on its own website. This list comes from Cloud Enabled ProtoNode Gateway Startup Guide (RER/LER) for interfacing Cleaver-Brooks products (750-426), revision 03/2018, a copy hosted by watmfg.com at https://watmfg.com/watmfg23082016/wp-content/uploads/2016/09/750-426-ProtoNode-Cloud.pdf. Ask Cleaver-Brooks or its representative for the current revision.
What are the minimum BACnet points to integrate the Cleaver-Brooks CB120 flame safeguard (ProtoNode)?
Start with AI 1 Status (Burner status code); BI 17 Blower_Out (Blower output on); BI 18 Main_Valve_Out (Main valve output on); AI 5 Flame (Flame signal); BI 24 Alarm_Out (Alarm output); AI 11 LOCKOUT1_MSG (Lockout 1 message code).
How do I check these points on the real CB120 flame safeguard (ProtoNode)?
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 Cleaver-Brooks BACnet points lists
- Boiler feedwater deaerator and surge tank controller via BACnet gateway
Cleaver-Brooks ADAC 1000 deaerator / surge tank control (ProtoNode, EtherNet/IP)
Cleaver-Brooks deaerator and surge tank packages with the ADAC 1000 PLC control, read through a ProtoNode RER gateway over EtherNet/IP.
Also known as: ADAC 1000, ADAC_1000, ProtoNode RER, 750-426 - Boiler feedwater deaerator and surge tank controller via BACnet gateway
Cleaver-Brooks ADAC deaerator / surge tank control (ProtoNode)
Cleaver-Brooks deaerator and surge tank packages with the ADAC control, read through a ProtoNode RER gateway.
Also known as: ADAC, CB deaerator control, ProtoNode RER, 750-426 - Boiler flame safeguard via BACnet gateway
Cleaver-Brooks CB780 flame safeguard with expanded annunciator (ProtoNode)
Cleaver-Brooks boilers with the CB780 burner management control and expanded annunciator, read through a ProtoNode RER gateway.
Also known as: CB780, CB 780, CB780E, ProtoNode RER, 750-426 - Hot water boiler control via BACnet gateway
Cleaver-Brooks Falcon Hydronic boiler control (ProtoNode)
Cleaver-Brooks hot water boilers with the Falcon hydronic burner control, read through a ProtoNode RER gateway.
Also known as: Falcon Hydronic, ClearFire Falcon, CB Falcon, ProtoNode RER, 750-426 - Steam boiler control via BACnet gateway
Cleaver-Brooks Falcon Steam boiler control (ProtoNode)
Cleaver-Brooks steam boilers with the Falcon steam burner control, read through a ProtoNode RER gateway.
Also known as: Falcon Steam, CB Falcon steam, ProtoNode RER, 750-426 - Boiler flame safeguard and fuel-air ratio control via BACnet gateway
Cleaver-Brooks FARC with CB780 / CB783 burner control (ProtoNode)
Cleaver-Brooks boilers with a CB780/CB783 burner control and FARC fuel-air ratio control, read through a ProtoNode RER gateway.
Also known as: FARC, CB 780/783, CB783, ProtoNode RER, 750-426 - Steam or hot water boiler control via BACnet gateway
Cleaver-Brooks Hawk 1000 boiler control (ProtoNode)
Cleaver-Brooks boilers with the Hawk 1000 PLC boiler control, read through a ProtoNode RER gateway.
Also known as: Hawk 1000, CB Hawk 1000, ProtoNode RER, 750-426 - Steam or hot water boiler control via BACnet gateway
Cleaver-Brooks Hawk 2000 boiler control (ProtoNode)
Cleaver-Brooks boilers with the Hawk 2000 control, read through a ProtoNode RER gateway.
Also known as: Hawk 2000, CB Hawk 2000, ProtoNode RER, 750-426 - Steam or hot water boiler control via BACnet gateway
Cleaver-Brooks Hawk 4000 boiler control (ProtoNode)
Cleaver-Brooks boilers with the Hawk 4000 PLC boiler control, read through a ProtoNode RER gateway.
Also known as: Hawk 4000, CB Hawk 4000, ProtoNode RER, 750-426 - Steam or hot water boiler control via BACnet gateway
Cleaver-Brooks Hawk 4000 V2 boiler control (ProtoNode)
Cleaver-Brooks boilers with the HAWK 4000 V2 PLC boiler control, read through a ProtoNode RER gateway.
Also known as: HAWK 4000 V2, CB HAWK 4000 V2, HAWK_4000_V2, ProtoNode RER, 750-426 - Steam or hot water boiler control via BACnet gateway
Cleaver-Brooks Hawk 4500 boiler control (ProtoNode, EtherNet/IP)
Cleaver-Brooks boilers with the Hawk 4500 PLC boiler control, read through a ProtoNode RER gateway over EtherNet/IP.
Also known as: Hawk 4500, CB Hawk 4500, ProtoNode RER, 750-426 - Steam boiler control via BACnet gateway
Cleaver-Brooks Hawk 5000 boiler control (ProtoNode)
Cleaver-Brooks steam boilers with the Hawk 5000 control, read through a ProtoNode RER gateway.
Also known as: Hawk 5000, CB Hawk 5000, ProtoNode RER, 750-426 - Steam or hot water boiler control via BACnet gateway
Cleaver-Brooks Hawk ICS boiler control (ProtoNode)
Cleaver-Brooks boilers with the Hawk ICS control, read through a ProtoNode RER gateway.
Also known as: Hawk ICS, CB ICS, ProtoNode RER, 750-426 - Boiler lead/lag master panel via BACnet gateway
Cleaver-Brooks Hawk Master Panel lead/lag (ProtoNode)
Cleaver-Brooks Hawk Master Panels sequencing up to eight Hawk boilers (A-H), read through a ProtoNode RER gateway.
Also known as: Hawk Master Panel, Hawk Master, CB Master Panel, ProtoNode RER, 750-426 - Boiler interface module via BACnet gateway
Cleaver-Brooks HSC Boiler Interface Module (ProtoNode)
Cleaver-Brooks HSC boiler interface modules (one boiler each), read through a ProtoNode RER gateway.
Also known as: Boiler Interface Module, HSC Boiler Interface, BIM, ProtoNode RER, 750-426 - Multi-boiler sequencer (hot water boiler plant) via BACnet gateway
Cleaver-Brooks HSC Hydronic System Controller (ProtoNode)
Cleaver-Brooks HSC panels sequencing up to 10 condensing and 10 non-condensing boilers, read through a ProtoNode RER gateway.
Also known as: HSC, Hydronic System Controller, CB HSC, ProtoNode RER, 750-426 - Pump interface module (boiler plant pumps) via BACnet gateway
Cleaver-Brooks HSC Pump Interface Module (ProtoNode)
Cleaver-Brooks HSC pump interface modules (up to four system pumps), read through a ProtoNode RER gateway.
Also known as: Pump Interface Module, HSC Pump Interface, ProtoNode RER, 750-426 - Boiler water level controller via BACnet gateway
Cleaver-Brooks LCS Level Control System (ProtoNode)
Cleaver-Brooks LCS water level controllers (one or two tanks), read through a ProtoNode RER gateway.
Also known as: LCS, Level Control System, ProtoNode RER, 750-426 - Boiler feed pump controller via BACnet gateway
Cleaver-Brooks PCS Pump Control System (ProtoNode)
Cleaver-Brooks PCS pump controllers (up to four pumps on header pressure or tank level), read through a ProtoNode RER gateway.
Also known as: PCS, Pump Control System, ProtoNode RER, 750-426 - Electric power meter via BACnet gateway
Cleaver-Brooks Shark 100 power meter profile (ProtoNode)
Shark 100 power meters supplied on Cleaver-Brooks equipment, read through a ProtoNode RER gateway.
Also known as: Shark 100, Electro Industries Shark 100, ProtoNode RER, 750-426 - Electric power meter via BACnet gateway
Cleaver-Brooks Shark 200 power meter profile (ProtoNode)
Shark 200 power meters supplied on Cleaver-Brooks equipment, read through a ProtoNode RER gateway.
Also known as: Shark 200, Electro Industries Shark 200, ProtoNode RER, 750-426 - Process loop controller via BACnet gateway
Cleaver-Brooks UDC 2500 loop controller profile (ProtoNode)
Honeywell UDC 2500 loop controllers supplied on Cleaver-Brooks equipment, read through a ProtoNode RER gateway.
Also known as: UDC 2500, UDC2500, Honeywell UDC 2500, ProtoNode RER, 750-426
Source: Cloud Enabled ProtoNode Gateway Startup Guide (RER/LER) for interfacing Cleaver-Brooks products · 750-426 · rev. 03/2018. Object names, instances and units are reproduced as published; descriptions are our own.