Easy BACnet
  1. Home
  2. BACnet points lists
  3. Contemporary Controls
  4. Carlo Gavazzi EM21 via BASgatewayLX

Power and energy meter · BACnet points list

Contemporary Controls Carlo Gavazzi EM21 via BASgatewayLX BACnet points list

Updated 12 November 2026

Short answer

Gateway profile for the Carlo Gavazzi EM21 three-phase meter: 44 Analog Inputs, 31 polled by default. It reads line-neutral and line-line voltages, phase currents, W, VA and VAR per phase and in total, PF, phase sequence, frequency and imported kWh/kvarh.

This page lists 44 BACnet objects for the Contemporary Controls Carlo Gavazzi EM21 via BASgatewayLX — 0 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Contemporary Controls’s own free documentation, linked below.

Manufacturer
Contemporary Controls
Model
Carlo Gavazzi EM21 via BASgatewayLX
Equipment
Power and energy meter
Equipment type
Thermostats, sensors & meters
BACnet objects
44 (0 writable)
Transport
BACnet IP
Firmware
Not stated
Also known as
EM21, EM21 72D, Carlo Gavazzi EM21 Modbus
Source document
BASgatewayLX Modbus device profile Carlo_Gavazzi_EM21_Power_Meter · Carlo_Gavazzi_EM21_Power_Meter_LX.csv
Download CSV 44 rows Download EDE B.I.G.-EU JSON Manufacturer PDF ↗ Compare with your scan Download Easy BACnet Mobile App Google Play

Reference only, provided as-is: verify against Contemporary Controls’s current documentation and the live device before use. Not official Contemporary Controls information. Terms of use.

BMS integration notes: Contemporary Controls Carlo Gavazzi EM21 via BASgatewayLX

Integration in brief

Map total active power, imported active energy (kWh+) and system line-neutral voltage first. The listed objects are read-only.

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.

ObjectNameWhyAccess
AI 21W TotalTotal active powerRead
AI 30KWh(+) TOTImported active energy (kWh+)Read
AI 19V L-N TotalSystem line-neutral voltageRead
AI 20V L-L TotalSystem line-line voltageRead
AI 7A L1Current L1Read
AI 27PF TotalTotal power factorRead
AI 29HzFrequencyRead

Network setup

Watch out for

Contemporary Controls Carlo Gavazzi EM21 via BASgatewayLX 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.

44 of 44 shown
Type
Analog
Show
Contemporary Controls Carlo Gavazzi EM21 via BASgatewayLX BACnet Points List
DescriptionStates
AI1V L1-NModbus 400001VRead
AI2V L2-NModbus 400003VRead
AI3V L3-NModbus 400005VRead
AI4V L1-L2Modbus 400007VRead
AI5V L2-L3Modbus 400009VRead
AI6V L3-L1Modbus 400011VRead
AImin7A L1Modbus 400013ARead
AI8A L2Modbus 400015ARead
AI9A L3Modbus 400017ARead
AI10W L1Modbus 400019WRead
AI11W L2Modbus 400021WRead
AI12W L3Modbus 400023WRead
AI13VA L1Modbus 400025VARead
AI14VA L2Modbus 400027VARead
AI15VA L3Modbus 400029VARead
AI16VAR L1Modbus 400031VARRead
AI17VAR L2Modbus 400033VARRead
AI18VAR L3Modbus 400035VARRead
AImin19V L-N TotalModbus 400037VRead
AImin20V L-L TotalModbus 400039VRead
AImin21W TotalModbus 400041WRead
AI22VA TotalModbus 400043VARead
AI23VAR TotalModbus 400045VARRead
AI24PF L1Modbus 400047PFRead
AI25PF L2Modbus 400048PFRead
AI26PF L3Modbus 400049PFRead
AImin27PF TotalModbus 400050PFRead
AI28Phase sequenceModbus 400051Read
AImin29HzModbus 400052HzRead
AImin30KWh(+) TOTModbus 400053kWhRead
AI31Kvarh(+) TOTModbus 400055Read
AI32Version codeModbus 400771; not polled by defaultRead
AI33Revision codeModbus 400772; not polled by defaultRead
AI34Programming lockModbus 400773; not polled by defaultRead
AI35Carlo Gavazzi Controls identification codeModbus 400012; not polled by defaultRead
AI36PASSWORDModbus 404097; not polled by defaultRead
AI37Type of applicationModbus 404098; not polled by defaultRead
AI38Measuring systemModbus 404099; not polled by defaultRead
AI39Current transformer ratioModbus 404100; not polled by defaultRead
AI40Voltage transformer ratioModbus 404102; not polled by defaultRead
AI41Kwh per pulseModbus 404104; not polled by defaultRead
AI42RS485 instrument addressModbus 404105; not polled by defaultRead
AI43Reset of all meters (KwhTOT and KvarhTOT)Modbus 412289; not polled by defaultRead
AI44Instrument serial numberModbus 420481; not polled by defaultRead
Object ID lookup: Contemporary Controls BASgatewayLX Carlo Gavazzi EM21 point IDs by name

Integration notes

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 Carlo Gavazzi EM21 via BASgatewayLX 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 Contemporary Controls Carlo Gavazzi EM21 via BASgatewayLX

How many BACnet points does the Contemporary Controls Carlo Gavazzi EM21 via BASgatewayLX have?

This list has 44 BACnet objects: 44 analog inputs. The exact set on a given unit depends on its firmware, installed options and configuration.

Which Contemporary Controls Carlo Gavazzi EM21 via BASgatewayLX BACnet points are writable?

None of the listed objects are marked writable in the source documentation. The source has no read/write column, so this is inferred from object type.

Where is the official Contemporary Controls Carlo Gavazzi EM21 via BASgatewayLX BACnet documentation?

The source is BASgatewayLX Modbus device profile Carlo_Gavazzi_EM21_Power_Meter (Carlo_Gavazzi_EM21_Power_Meter_LX.csv), published free by Contemporary Controls at https://www.ccontrols.com/support/dp/Carlo_Gavazzi_EM21_Power_Meter_LX.zip.

What are the minimum BACnet points to integrate the Contemporary Controls Carlo Gavazzi EM21 via BASgatewayLX?

Start with AI 21 W Total (Total active power); AI 30 KWh(+) TOT (Imported active energy (kWh+)); AI 19 V L-N Total (System line-neutral voltage); AI 20 V L-L Total (System line-line voltage); AI 7 A L1 (Current L1); AI 27 PF Total (Total power factor); AI 29 Hz (Frequency).

How do I check these points on the real Carlo Gavazzi EM21 via BASgatewayLX?

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 Contemporary Controls BACnet points lists

Source: BASgatewayLX Modbus device profile Carlo_Gavazzi_EM21_Power_Meter · Carlo_Gavazzi_EM21_Power_Meter_LX.csv. Object names, instances and units are reproduced as published; descriptions are our own.