Easy BACnet- Home
- BACnet points lists
- Bock Water Heaters
- Carlin EZTemp 51110A7 electric water heater control
Electric water heater control · BACnet points list
Bock Water Heaters Carlin EZTemp 51110A7 electric water heater control BACnet points list
Updated 12 November 2026Unofficial source
The Carlin EZTemp 51110A7 is the electric water heater control Bock uses, with BACnet MS/TP on board. Its object list is short: three temperature sensors, heating-stage and relay states, operating mode, the active error and a three-deep error history as multistate inputs, an enable/disable multistate value and the setpoint as an Integer Value.
This page lists 21 BACnet objects for the Bock Water Heaters Carlin EZTemp 51110A7 electric water heater control — 2 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from a copy of Bock Water Heaters’s documentation hosted by BACnet International product catalog, not by Bock Water Heaters itself, so treat it as unofficial.
- Manufacturer
- Bock Water Heaters
- Model
- Carlin EZTemp 51110A7 electric water heater control
- Equipment
- Electric water heater control
- Equipment type
- Boilers & water heaters
- BACnet objects
- 21 (2 writable)
- Transport
- BACnet MS/TP
- Firmware
- Application 02_45, firmware 5.0.1.0
- Also known as
- 51110A7, Carlin EZTemp, EZTemp, Bock electric water heater BACnet
- Source document
- BACnet Protocol Implementation Conformance Statement, Carlin EZTemp 51110A7 (unofficial copy, hosted by BACnet International product catalog)
Reference only, provided as-is: verify against Bock Water Heaters’s current documentation and the live device before use. Not official Bock Water Heaters information. Terms of use.
BMS integration notes: Bock Water Heaters Carlin EZTemp 51110A7 electric water heater control
Enable the heater with MV 12 and write the water temperature setpoint to IV 3 (100-182 °F). Read the temperature sensors, the heating state (MI 1), the operating mode (MI 11) and the active error (MI 2).
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 |
|---|---|---|---|
| MV 12 | Enable Mode | Heater enable: 1 = Enabled, 2 = Disabled | Write |
| IV 3 | Set Point | Water temperature setpoint, 100-182 °F | Write |
| AI 4 | Temp Sensor 1 | Temperature sensor 1, °F | Read |
| AI 5 | Temp Sensor 2 | Temperature sensor 2, °F | Read |
| MI 1 | Control Status | Heating stage state | Read |
| MI 11 | Operating Mode | Operating mode; 5 = Normal | Read |
| MI 2 | Control Error Code | Active error; 1 = None | Read |
Enable & remote start
MV 12 Enable Mode enables or disables the heater from BACnet.
Network setup
- MS/TP at 9600 or 38400 baud; MAC address, baud, Max_Master and Max_Info_Frames are writable in the Network Port object (instance 22).
Watch out for
- The setpoint is an Integer Value object (IV 3), which some older front ends do not support.
Bock Water Heaters Carlin EZTemp 51110A7 electric water heater control 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 | 4 | Temp Sensor 1 | Temperature sensor 1 | °F | Read | |
| AImin | 5 | Temp Sensor 2 | Temperature sensor 2 | °F | Read | |
| AI | 6 | Outdoor Temp Sensor | Outdoor temperature sensor | °F | Read | |
| MImin | 1 | Control Status | Heating stage state | Read | 1 = HEAT_OFF, 2 = HEAT_ON_REQ_1, 3 = HEAT_ON_REQ_2, 4 = HEAT_ON_REQ_3, 5 = HEAT_ON_1, 6 = HEAT_ON_2, 7 = HEAT_ON_3, 8 = HEAT_OFF_REQ_1, 9 = HEAT_OFF_REQ_2, 10 = HEAT_OFF_REQ_3 | |
| MImin | 2 | Control Error Code | Active control error | Read | 1 = None, 2 = Safety relay fail on, 3 = Output 1 relay fail on, 4 = Output 2 relay fail on, 5 = Output 3 relay fail on, 6 = Safety relay fail off, 7 = Output 1 relay fail off, 8 = Output 2 relay fail off, 9 = Output 3 relay fail off, 10 = Temperature Sensor 1 open, 11 = Temperature Sensor 2 open, 12 = Outdoor Temperature Sensor open | |
| MI | 7 | Safety Relay | Safety relay state | Read | 1 = Relay Off, 2 = Relay On | |
| MI | 8 | Output1 Relay | Output relay 1 state | Read | 1 = Relay Off, 2 = Relay On | |
| MI | 9 | Output2 Relay | Output relay 2 state | Read | 1 = Relay Off, 2 = Relay On | |
| MI | 10 | Output3 Relay | Output relay 3 state | Read | 1 = Relay Off, 2 = Relay On | |
| MImin | 11 | Operating Mode | Control operating mode | Read | 1 = Version display mode, 2 = Soft lockout mode, 3 = Lockout mode, 4 = Latchup mode, 5 = Normal mode, 6 = Display mode, 7 = Setting mode, 8 = Diagnostic start mode, 9 = Diagnostic mode, 10 = Modbus mode | |
| MI | 13 | Error 1 code | Error history, first entry | Read | Same states as MI 2 | |
| MI | 16 | Error 2 code | Error history, second entry | Read | Same states as MI 2 | |
| MI | 19 | Error3 code | Error history, third entry | Read | Same states as MI 2 | |
| MVmin | 12 | Enable Mode | Heater enable / disable | Write | 1 = Enabled, 2 = Disabled | |
| IVmin | 3 | Set Point | Water temperature setpoint (100-182) | °F | Write | |
| IV | 14 | Error 1 File Number | Diagnostic file number for error 1 | Read | ||
| IV | 15 | Error 1 Line Number | Diagnostic line number for error 1 | Read | ||
| IV | 17 | Error 2 File Number | Diagnostic file number for error 2 | Read | ||
| IV | 18 | Error 2 File Number | Diagnostic line number for error 2 (name printed as File Number) | Read | ||
| IV | 20 | Error 3 File Number | Diagnostic file number for error 3 | Read | ||
| IV | 21 | Error 3 Line Number | Diagnostic line number for error 3 | Read |
No points match these filters.
Object ID lookup: Bock Water Heaters Carlin EZTemp 51110A7 electric water heater control point IDs by name
AI4Temp Sensor 1AI5Temp Sensor 2AI6Outdoor Temp SensorMI1Control StatusMI2Control Error CodeMI7Safety RelayMI8Output1 RelayMI9Output2 RelayMI10Output3 RelayMI11Operating ModeMI13Error 1 codeMI16Error 2 codeMI19Error3 codeMV12Enable ModeIV3Set PointIV14Error 1 File NumberIV15Error 1 Line NumberIV17Error 2 File NumberIV18Error 2 File NumberIV20Error 3 File NumberIV21Error 3 Line Number
Integration notes
- Only MV 12 (Enable Mode) and IV 3 (Set Point) are writable.
- Multistate state numbers are given in the order the PICS lists the state texts, starting at 1.
- IV 18 is printed with the name 'Error 2 File Number', the same as IV 17; by position it is the error 2 line number.
- The MS/TP Network Port object (instance 22) supports 9600 and 38400 baud; MAC address, link speed, Max_Master and Max_Info_Frames are writable there.
- Device profile B-SA, BACnet protocol revision 19; segmentation supported.
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 Carlin EZTemp 51110A7 electric water heater control 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 Bock Water Heaters Carlin EZTemp 51110A7 electric water heater control
How many BACnet points does the Bock Water Heaters Carlin EZTemp 51110A7 electric water heater control have?
This list has 21 BACnet objects: 3 analog inputs, 10 multi-state inputs, 1 multi-state value, 7 integer values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Bock Water Heaters Carlin EZTemp 51110A7 electric water heater control BACnet points are writable?
2 of the 21 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 Bock Water Heaters Carlin EZTemp 51110A7 electric water heater control BACnet documentation?
Bock Water Heaters does not publish it on its own website. This list comes from BACnet Protocol Implementation Conformance Statement, Carlin EZTemp 51110A7, a copy hosted by BACnet International product catalog at https://www.bacnetinternational.net/catalog/manu/bock%20water%20heaters,%20inc./PICS_conformance_pic_v4.pdf. Ask Bock Water Heaters or its representative for the current revision.
What are the minimum BACnet points to integrate the Bock Water Heaters Carlin EZTemp 51110A7 electric water heater control?
Start with MV 12 Enable Mode (Heater enable: 1 = Enabled, 2 = Disabled); IV 3 Set Point (Water temperature setpoint, 100-182 °F); AI 4 Temp Sensor 1 (Temperature sensor 1, °F); AI 5 Temp Sensor 2 (Temperature sensor 2, °F); MI 1 Control Status (Heating stage state); MI 11 Operating Mode (Operating mode; 5 = Normal); MI 2 Control Error Code (Active error; 1 = None).
How do I enable BMS control of the Bock Water Heaters Carlin EZTemp 51110A7 electric water heater control?
MV 12 Enable Mode enables or disables the heater from BACnet.
How do I check these points on the real Carlin EZTemp 51110A7 electric water heater control?
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.
Source: BACnet Protocol Implementation Conformance Statement, Carlin EZTemp 51110A7. Object names, instances and units are reproduced as published; descriptions are our own.