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EM Series 3-Phase Energy Meter with EMCOMMS Module (BACnet MS/TP)

Power and energy meter (3-phase, BACnet MS/TP) · BACnet points list

Johnson Controls EM Series 3-Phase Energy Meter with EMCOMMS Module (BACnet MS/TP) BACnet points list

Updated 6 November 2026

Short answer

The EMCOMMS is the RS485 module of the Johnson Controls EM series three-phase energy meter. It speaks BACnet MS/TP (or Modbus) and by default learns the baud rate, protocol and MAC address from the live MS/TP trunk. Objects cover system and per-phase voltage, current, power, power factor, energy (as accumulators and as analog inputs), demand power, two pulse inputs and the PowerPrint installation checks.

This page lists 267 BACnet objects for the Johnson Controls EM Series 3-Phase Energy Meter with EMCOMMS Module (BACnet MS/TP) — 199 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Johnson Controls’s own free documentation, linked below.

Manufacturer: Johnson Controls
Model: EM Series 3-Phase Energy Meter with EMCOMMS Module (BACnet MS/TP)
Equipment: Power and energy meter (3-phase, BACnet MS/TP)
Equipment type: Thermostats, sensors & meters
BACnet objects: 267 (199 writable)
Transport: BACnet MS/TP
Firmware: 1.1.4
Default device instance: 665000 + last three digits of the serial number
Also known as: EMCOMMS, EM Series, EM 3 Phase Energy Meter, JCI EM meter, EMCOMMS BACnet
Source document: BACnet Protocol Guide EMCOMMS · LIT-12013039 · rev. 2018-08-17 (Rev 0A)

Download CSV 267 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 Johnson Controls’s current documentation and the live device before use. Not official Johnson Controls information. Terms of use.

BMS integration notes: Johnson Controls EM Series 3-Phase Energy Meter with EMCOMMS Module (BACnet MS/TP)

Integration in brief

Connect the RS485 terminals to a live MS/TP trunk and let the meter auto-detect baud rate, protocol and MAC address, then discover it (device ID 665 plus the last three serial digits). Read system real power, energy, voltage, current, power factor and demand, and watch the condition flags for wiring or sensor problems.

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 600	Total Real Power	Total real power, kW	Write
AI 700	Total Real Energy (AI)	Total real energy, kWh	Read
AI 800	Demand Total Real Power	Demand real power over the demand window, kW	Write
AI 420	Phase Average RMS Voltage	Average phase voltage, V	Write
AI 520	Phase Average RMS Current	Average phase current, A	Write
AI 550	System Power Factor	System true power factor	Write
AI 410	Line Frequency	Line frequency, Hz	Write
AV 400	Active Conditions	Bit-coded active system conditions	Read

Network setup

Factory default is automatic: the meter learns baud rate (9600-115200), protocol and a free MAC address (0-127) by listening to an active MS/TP master on the trunk. It cannot learn on an idle line.
Default device ID is 665000 plus the last three digits of the label serial number (serial 123456 gives 665456).
To lock the settings, write AV 123 (MAC address), AV 124 (baud rate) and MSV 126 (parity); writing them turns the matching Auto BV off.
MAC addresses 128-254 always run as MS/TP subordinate (no token passing); 0-127 run as master when Max Info Frames is not 0 and the address is within Max Master.
Holding the setup button while powering up clears the learned automatic settings.

Watch out for

Writing a new baud rate to AV 124 cannot be undone remotely; the meter goes silent until the trunk matches.
AV 190 with the reset key wipes the whole configuration, including energy totals, MAC address and device ID.
Leaving an energy object Out Of Service stops it from accumulating new energy.
S and T phase objects sit at R phase instance +1000 and +2000; System Phase Selection (MSV 161) sets which phases feed the system totals.
Accumulator (ACC) energy objects wrap to 0 at 999,999; the AI versions of the same energy do not wrap.

Johnson Controls EM Series 3-Phase Energy Meter with EMCOMMS Module (BACnet MS/TP) 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.

267 of 267 shown

Type

Multi-state

Access

Units

Show

Johnson Controls EM Series 3-Phase Energy Meter with EMCOMMS Module (BACnet MS/TP) BACnet Points List
			Description			States
ACC	210	Pulse Input 1	Pulse count at pulse input terminal 1		Read
ACC	220	Pulse Input 2	Pulse count at pulse input terminal 2		Read
ACC	700	Total Real Energy (ACC)	Total real energy, system phases (integer)	kWh	Read
ACC	702	Total Real Energy (ACC) - Import	Import part	kWh	Read
ACC	704	Total Real Energy (ACC) - Export	Export part	kWh	Read
ACC	706	Total Real Energy (ACC) - Net	Net (import minus export)	kWh	Read
ACC	720	System Real Energy (ACC)	System real energy from net real power (integer)	kWh	Read
ACC	722	System Real Energy (ACC) - Import	Import part	kWh	Read
ACC	724	System Real Energy (ACC) - Export	Export part	kWh	Read
ACC	740	Total Reactive Energy (ACC)	Total reactive energy, system phases (integer)	kVARh	Read
ACC	742	Total Reactive Energy (ACC) - Import	Import part	kVARh	Read
ACC	744	Total Reactive Energy (ACC) - Export	Export part	kVARh	Read
ACC	760	Total Apparent Energy (ACC)	Total apparent energy, system phases (integer)	kVAh	Read
ACC	762	Total Apparent Energy (ACC) - Import	Import part	kVAh	Read
ACC	764	Total Apparent Energy (ACC) - Export	Export part	kVAh	Read
ACC	1700	Total R Phase Real Energy (ACC)	R phase total real energy (integer)	kWh	Read
ACC	1702	Total R Phase Real Energy (ACC) - Import	Import part	kWh	Read
ACC	1704	Total R Phase Real Energy (ACC) - Export	Export part	kWh	Read
ACC	1706	Total R Phase Real Energy (ACC) - Net	Net (import minus export)	kWh	Read
ACC	1740	Total R Phase Reactive Energy (ACC)	R phase total reactive energy (integer)	kVARh	Read
ACC	1742	Total R Phase Reactive Energy (ACC) - Import	Import part	kVARh	Read
ACC	1744	Total R Phase Reactive Energy (ACC) - Export	Export part	kVARh	Read
ACC	1760	Total R Phase Apparent Energy (ACC)	R phase total apparent energy (integer)	kVAh	Read
ACC	1762	Total R Phase Apparent Energy (ACC) - Import	Import part	kVAh	Read
ACC	1764	Total R Phase Apparent Energy (ACC) - Export	Export part	kVAh	Read
AI	310	Temperature	Ambient temperature at the meter	°F	Write
AI	312	Temperature - Smoothed	Smoothed (filtered) value	°F	Write
AI	314	Temperature - Minimum	Lowest reading since last reset	°F	Write
AI	316	Temperature - Maximum	Highest reading since last reset	°F	Write
AI	318	Temperature - Average	Average since last reset	°F	Write
AI	380	Power Supply Voltage	Meter supply voltage after rectification	V	Write
AI	382	Power Supply Voltage - Smoothed	Smoothed (filtered) value	V	Write
AI	384	Power Supply Voltage - Minimum	Lowest reading since last reset	V	Write
AI	386	Power Supply Voltage - Maximum	Highest reading since last reset	V	Write
AI	388	Power Supply Voltage - Average	Average since last reset	V	Write
AImin	410	Line Frequency	AC line frequency	Hz	Write
AI	412	Line Frequency - Smoothed	Smoothed (filtered) value	Hz	Write
AI	414	Line Frequency - Minimum	Lowest reading since last reset	Hz	Write
AI	416	Line Frequency - Maximum	Highest reading since last reset	Hz	Write
AI	418	Line Frequency - Average	Average since last reset	Hz	Write
AImin	420	Phase Average RMS Voltage	Average RMS voltage of valid phases	V	Write
AI	422	Phase Average RMS Voltage - Smoothed	Smoothed (filtered) value	V	Write
AI	424	Phase Average RMS Voltage - Minimum	Lowest reading since last reset	V	Write
AI	426	Phase Average RMS Voltage - Maximum	Highest reading since last reset	V	Write
AI	428	Phase Average RMS Voltage - Average	Average since last reset	V	Write
AI	450	Phase to Phase Average RMS Voltage	Average phase-to-phase RMS voltage	V	Write
AI	452	Phase to Phase Average RMS Voltage - Smoothed	Smoothed (filtered) value	V	Write
AI	454	Phase to Phase Average RMS Voltage - Minimum	Lowest reading since last reset	V	Write
AI	456	Phase to Phase Average RMS Voltage - Maximum	Highest reading since last reset	V	Write
AI	458	Phase to Phase Average RMS Voltage - Average	Average since last reset	V	Write
AImin	520	Phase Average RMS Current	Average RMS current of valid phases	A	Write
AI	522	Phase Average RMS Current - Smoothed	Smoothed (filtered) value	A	Write
AI	524	Phase Average RMS Current - Minimum	Lowest reading since last reset	A	Write
AI	526	Phase Average RMS Current - Maximum	Highest reading since last reset	A	Write
AI	528	Phase Average RMS Current - Average	Average since last reset	A	Write
AI	540	Phase Average Current Angle	Average current angle of valid phases	degrees	Write
AI	542	Phase Average Current Angle - Smoothed	Smoothed (filtered) value	degrees	Write
AI	544	Phase Average Current Angle - Minimum	Lowest reading since last reset	degrees	Write
AI	546	Phase Average Current Angle - Maximum	Highest reading since last reset	degrees	Write
AI	548	Phase Average Current Angle - Average	Average since last reset	degrees	Write
AImin	550	System Power Factor	System true power factor		Write
AI	552	System Power Factor - Smoothed	Smoothed (filtered) value		Write
AI	554	System Power Factor - Minimum	Lowest reading since last reset		Write
AI	556	System Power Factor - Maximum	Highest reading since last reset		Write
AI	558	System Power Factor - Average	Average since last reset		Write
AImin	600	Total Real Power	Absolute sum of phase real power	kW	Write
AI	602	Total Real Power - Smoothed	Smoothed (filtered) value	kW	Write
AI	604	Total Real Power - Minimum	Lowest reading since last reset	kW	Write
AI	606	Total Real Power - Maximum	Highest reading since last reset	kW	Write
AI	608	Total Real Power - Average	Average since last reset	kW	Write
AI	610	Phase Average Real Power	Average phase real power	kW	Write
AI	612	Phase Average Real Power - Smoothed	Smoothed (filtered) value	kW	Write
AI	614	Phase Average Real Power - Minimum	Lowest reading since last reset	kW	Write
AI	616	Phase Average Real Power - Maximum	Highest reading since last reset	kW	Write
AI	618	Phase Average Real Power - Average	Average since last reset	kW	Write
AI	620	Net Real Power	Signed sum of real power (negative = export)	kW	Write
AI	622	Net Real Power - Smoothed	Smoothed (filtered) value	kW	Write
AI	624	Net Real Power - Minimum	Lowest reading since last reset	kW	Write
AI	626	Net Real Power - Maximum	Highest reading since last reset	kW	Write
AI	628	Net Real Power - Overall Average	Overall average since last reset	kW	Write
AI	630	Net Real Power - Import Average	Average while importing	kW	Write
AI	632	Net Real Power - Export Average	Average while exporting	kW	Write
AI	640	Total Reactive Power	Absolute sum of phase reactive power	kVAR	Write
AI	642	Total Reactive Power - Smoothed	Smoothed (filtered) value	kVAR	Write
AI	644	Total Reactive Power - Minimum	Lowest reading since last reset	kVAR	Write
AI	646	Total Reactive Power - Maximum	Highest reading since last reset	kVAR	Write
AI	648	Total Reactive Power - Average	Average since last reset	kVAR	Write
AI	650	Phase Average Reactive Power	Average phase reactive power	kVAR	Write
AI	652	Phase Average Reactive Power - Smoothed	Smoothed (filtered) value	kVAR	Write
AI	654	Phase Average Reactive Power - Minimum	Lowest reading since last reset	kVAR	Write
AI	656	Phase Average Reactive Power - Maximum	Highest reading since last reset	kVAR	Write
AI	658	Phase Average Reactive Power - Average	Average since last reset	kVAR	Write
AI	660	Total Apparent Power	Sum of phase apparent power	kVA	Write
AI	662	Total Apparent Power - Smoothed	Smoothed (filtered) value	kVA	Write
AI	664	Total Apparent Power - Minimum	Lowest reading since last reset	kVA	Write
AI	666	Total Apparent Power - Maximum	Highest reading since last reset	kVA	Write
AI	668	Total Apparent Power - Average	Average since last reset	kVA	Write
AI	670	Phase Average Apparent Power	Average phase apparent power	kVA	Write
AI	672	Phase Average Apparent Power - Smoothed	Smoothed (filtered) value	kVA	Write
AI	674	Phase Average Apparent Power - Minimum	Lowest reading since last reset	kVA	Write
AI	676	Phase Average Apparent Power - Maximum	Highest reading since last reset	kVA	Write
AI	678	Phase Average Apparent Power - Average	Average since last reset	kVA	Write
AImin	700	Total Real Energy (AI)	Total real energy, system phases (float)	kWh	Read
AI	702	Total Real Energy (AI) - Import	Import part	kWh	Read
AI	704	Total Real Energy (AI) - Export	Export part	kWh	Read
AI	706	Total Real Energy (AI) - Net	Net (import minus export)	kWh	Read
AI	720	System Real Energy (AI)	System real energy from net real power (float)	kWh	Read
AI	722	System Real Energy (AI) - Import	Import part	kWh	Read
AI	724	System Real Energy (AI) - Export	Export part	kWh	Read
AI	740	Total Reactive Energy (AI)	Total reactive energy (float)	kVARh	Read
AI	742	Total Reactive Energy (AI) - Import	Import part	kVARh	Read
AI	744	Total Reactive Energy (AI) - Export	Export part	kVARh	Read
AI	760	Total Apparent Energy (AI)	Total apparent energy (float)	kVAh	Read
AI	762	Total Apparent Energy (AI) - Import	Import part	kVAh	Read
AI	764	Total Apparent Energy (AI) - Export	Export part	kVAh	Read
AImin	800	Demand Total Real Power	Demand total real power	kW	Write
AI	802	Demand Total Real Power - Previous	Demand of the last completed window	kW	Write
AI	804	Demand Total Real Power - Minimum	Lowest demand window since last reset	kW	Write
AI	806	Demand Total Real Power - Maximum	Highest demand window since last reset	kW	Write
AI	820	Demand Net Real Power	Demand net real power	kW	Write
AI	822	Demand Net Real Power - Previous	Demand of the last completed window	kW	Write
AI	824	Demand Net Real Power - Minimum	Lowest demand window since last reset	kW	Write
AI	826	Demand Net Real Power - Maximum	Highest demand window since last reset	kW	Write
AI	840	Demand Total Reactive Power	Demand total reactive power	kVAR	Write
AI	842	Demand Total Reactive Power - Previous	Demand of the last completed window	kVAR	Write
AI	844	Demand Total Reactive Power - Minimum	Lowest demand window since last reset	kVAR	Write
AI	846	Demand Total Reactive Power - Maximum	Highest demand window since last reset	kVAR	Write
AI	860	Demand Total Apparent Power	Demand total apparent power	kVA	Write
AI	862	Demand Total Apparent Power - Previous	Demand of the last completed window	kVA	Write
AI	864	Demand Total Apparent Power - Minimum	Lowest demand window since last reset	kVA	Write
AI	866	Demand Total Apparent Power - Maximum	Highest demand window since last reset	kVA	Write
AI	1420	R Phase RMS Voltage	R phase RMS voltage incl. voltage multiplier	V	Write
AI	1422	R Phase RMS Voltage - Smoothed	Smoothed (filtered) value	V	Write
AI	1424	R Phase RMS Voltage - Minimum	Lowest reading since last reset	V	Write
AI	1426	R Phase RMS Voltage - Maximum	Highest reading since last reset	V	Write
AI	1428	R Phase RMS Voltage - Average	Average since last reset	V	Write
AI	1440	R to S Phase Voltage Angle	Angle between R and S phase voltages	degrees	Write
AI	1442	R to S Phase Voltage Angle - Smoothed	Smoothed (filtered) value	degrees	Write
AI	1444	R to S Phase Voltage Angle - Minimum	Lowest reading since last reset	degrees	Write
AI	1446	R to S Phase Voltage Angle - Maximum	Highest reading since last reset	degrees	Write
AI	1448	R to S Phase Voltage Angle - Average	Average since last reset	degrees	Write
AI	1450	R to S Phase RMS Voltage	R to S phase RMS voltage	V	Write
AI	1452	R to S Phase RMS Voltage - Smoothed	Smoothed (filtered) value	V	Write
AI	1454	R to S Phase RMS Voltage - Minimum	Lowest reading since last reset	V	Write
AI	1456	R to S Phase RMS Voltage - Maximum	Highest reading since last reset	V	Write
AI	1458	R to S Phase RMS Voltage - Average	Average since last reset	V	Write
AI	1520	RMS Current	R phase RMS current incl. current multiplier	A	Write
AI	1522	RMS Current - Smoothed	Smoothed (filtered) value	A	Write
AI	1524	RMS Current - Minimum	Lowest reading since last reset	A	Write
AI	1526	RMS Current - Maximum	Highest reading since last reset	A	Write
AI	1528	RMS Current - Average	Average since last reset	A	Write
AI	1540	Current Angle	R phase current angle (positive = leading)	degrees	Write
AI	1542	Current Angle - Smoothed	Smoothed (filtered) value	degrees	Write
AI	1544	Current Angle - Minimum	Lowest reading since last reset	degrees	Write
AI	1546	Current Angle - Maximum	Highest reading since last reset	degrees	Write
AI	1548	Current Angle - Average	Average since last reset	degrees	Write
AI	1550	Power Factor	R phase true power factor (negative = export)		Write
AI	1552	Power Factor - Smoothed	Smoothed (filtered) value		Write
AI	1554	Power Factor - Minimum	Lowest reading since last reset		Write
AI	1556	Power Factor - Maximum	Highest reading since last reset		Write
AI	1558	Power Factor - Average	Average since last reset		Write
AI	1600	Real Power	R phase real power (negative = export)	kW	Write
AI	1602	Real Power - Smoothed	Smoothed (filtered) value	kW	Write
AI	1604	Real Power - Minimum	Lowest reading since last reset	kW	Write
AI	1606	Real Power - Maximum	Highest reading since last reset	kW	Write
AI	1608	Real Power - Overall Average	Overall average since last reset	kW	Write
AI	1610	Real Power - Import Average	Average while importing	kW	Write
AI	1612	Real Power - Export Average	Average while exporting	kW	Write
AI	1640	Reactive Power	R phase reactive power	kVAR	Write
AI	1642	Reactive Power - Smoothed	Smoothed (filtered) value	kVAR	Write
AI	1644	Reactive Power - Minimum	Lowest reading since last reset	kVAR	Write
AI	1646	Reactive Power - Maximum	Highest reading since last reset	kVAR	Write
AI	1648	Reactive Power - Overall Average	Overall average since last reset	kVAR	Write
AI	1650	Reactive Power - Import Average	Average while importing	kVAR	Write
AI	1652	Reactive Power - Export Average	Average while exporting	kVAR	Write
AI	1660	Apparent Power	R phase apparent power	kVA	Write
AI	1662	Apparent Power - Smoothed	Smoothed (filtered) value	kVA	Write
AI	1664	Apparent Power - Minimum	Lowest reading since last reset	kVA	Write
AI	1666	Apparent Power - Maximum	Highest reading since last reset	kVA	Write
AI	1668	Apparent Power - Overall Average	Overall average since last reset	kVA	Write
AI	1670	Apparent Power - Import Average	Average while importing	kVA	Write
AI	1672	Apparent Power - Export Average	Average while exporting	kVA	Write
AI	1700	Total Real Energy (AI)	R phase total real energy (float)	kWh	Read
AI	1702	Total Real Energy (AI) - Import	Import part	kWh	Read
AI	1704	Total Real Energy (AI) - Export	Export part	kWh	Read
AI	1706	Total Real Energy (AI) - Net	Net (import minus export)	kWh	Read
AI	1740	Total Reactive Energy (AI)	R phase total reactive energy (float)	kVARh	Read
AI	1742	Total Reactive Energy (AI) - Import	Import part	kVARh	Read
AI	1744	Total Reactive Energy (AI) - Export	Export part	kVARh	Read
AI	1760	Total Apparent Energy (AI)	R phase total apparent energy (float)	kVAh	Read
AI	1762	Total Apparent Energy (AI) - Import	Import part	kVAh	Read
AI	1764	Total Apparent Energy (AI) - Export	Export part	kVAh	Read
AI	1800	Demand Real Power	R phase demand real power (windowed average)	kW	Write
AI	1802	Demand Real Power - Previous	Demand of the last completed window	kW	Write
AI	1804	Demand Real Power - Minimum	Lowest demand window since last reset	kW	Write
AI	1806	Demand Real Power - Maximum	Highest demand window since last reset	kW	Write
AI	1840	Demand Reactive Power	R phase demand reactive power	kVAR	Write
AI	1842	Demand Reactive Power - Previous	Demand of the last completed window	kVAR	Write
AI	1844	Demand Reactive Power - Minimum	Lowest demand window since last reset	kVAR	Write
AI	1846	Demand Reactive Power - Maximum	Highest demand window since last reset	kVAR	Write
AI	1860	Demand Apparent Power	R phase demand apparent power	kVA	Write
AI	1862	Demand Apparent Power - Previous	Demand of the last completed window	kVA	Write
AI	1864	Demand Apparent Power - Minimum	Lowest demand window since last reset	kVA	Write
AI	1866	Demand Apparent Power - Maximum	Highest demand window since last reset	kVA	Write
AV	103	Reset Count	Lifetime count of firmware resets		Read
AV	104	Up Time	Time since last meter reset	s	Read
AV	123	MAC Address	MS/TP MAC address, 0-254		Write
AV	124	RS485 Baud Rate	RS485 baud rate, 1200-460800		Write
AV	134	Smoothed Temperature Response Time	Smoothing response time for temperature	s	Write
AV	142	Smoothed Frequency Response Time	Smoothing response time for frequency and angles	s	Write
AV	144	Smoothed Voltage Response Time	Smoothing response time for voltage	s	Write
AV	154	Smoothed Current Response Time	Smoothing response time for current, angle, PF	s	Write
AV	164	Smoothed Power Response Time	Smoothing response time for power	s	Write
AV	174	Energy Timestamp	Timestamp updated with energy accumulators	ms	Read
AV	182	Demand Synchronization Hour	Hour of day for daily demand sync, 0-23	h	Write
AV	183	Demand Window Time	Maximum demand window length, 0-1440 min	min	Write
AV	184	Elapsed Demand Window	Time into current demand window; write 0 restarts it	min	Write
AV	186	Demand Window Count	Number of completed demand windows		Read
AV	190	Configuration Reset	Write the reset key to restore factory defaults		Write
AV	192	Statistics Reset	Write a key to reset system or all statistics		Write
AV	194	Energy Reset Count	Number of energy resets		Read
AV	208	Pulse Input Debounce Time	Pulse input debounce, 0-255 ms	ms	Write
AV	242	PowerPrint Frequency	Expected PowerPrint line frequency	Hz	Write
AV	244	PowerPrint Frequency Tolerance	PowerPrint frequency tolerance	Hz	Write
AV	246	PowerPrint Voltage Tolerance	PowerPrint voltage tolerance	%	Write
AV	248	PowerPrint Voltage Angle Tolerance	PowerPrint voltage angle tolerance	degrees	Write
AVmin	400	Active Conditions	Bit flags of active system conditions		Read
AV	401	Previous Conditions	Active and latched system condition flags; write 0 clears		Write
AV	1140	Voltage Rating	R phase CVT rated RMS voltage	V	Read
AV	1142	Voltage Multiplier	R phase voltage multiplier (PT ratio)		Write
AV	1144	PowerPrint Voltage	R phase expected PowerPrint voltage	V	Write
AV	1146	PowerPrint Voltage Angle	R phase expected PowerPrint voltage angle	degrees	Write
AV	1150	Current Rating	R phase CVT rated RMS current	A	Read
AV	1152	Current Multiplier	R phase current multiplier		Write
AV	1162	Power Multiplier	R phase power multiplier		Write
AV	1192	Statistics Reset	Write a key to reset R phase statistics		Write
AV	1400	Active Conditions	Bit flags of active R phase conditions		Read
AV	1401	Previous Conditions	Active and latched R phase condition flags; write 0 clears		Write
BI	200	Setup Button	Active while the setup button is pressed		Read
BI	201	Binary Input 1	State of pulse input terminal 1		Read
BI	202	Binary Input 2	State of pulse input terminal 2		Read
BV	111	Identify Meter	Puts the status LEDs into identify mode		Write
BV	112	Auto Protocol	Automatic protocol detection		Write
BV	113	Auto MAC Address	Automatic MAC address selection		Write
BV	114	Auto Baud Rate	Automatic baud rate detection		Write
BV	116	Auto Parity	Automatic parity detection		Write
BV	195	Auto Reset Statistics	Automatic reset of min/max/average statistics		Write
BV	240	PowerPrint Alarm	Active when any PowerPrint condition is active		Read
BV	241	PowerPrint	PowerPrint reference set; write to set or clear		Write
BV	1102	CVT Present	Active when an R phase CVT is connected		Read
BV	1161	Power Multiplier Override	R phase power multiplier overridden		Write
MV	122	RS485 Protocol	RS485 protocol selection		Write	1=Auto, 2=BACnet, 3=Modbus RTU, 4=Modbus ASCII, 5=BACnet and Modbus RTU, 6=BACnet and Modbus ASCII, 7=Modbus RTU and ASCII, 8=Any Protocol
MV	126	RS485 Parity	RS485 parity		Write	1=Auto, 2=No Parity, 3=Odd Parity, 4=Even Parity
MV	133	Temperature Units	Temperature units		Write	1=Degrees Fahrenheit, 2=Degrees Celsius
MV	152	System Current Sensor Technology	Combined current sensor technology of the CVTs		Read	1=Unknown Technology, 2=Conflicted Technology, 3=Multiple Technology, 4=Rogowski Coil, 5=Current Transformer
MV	153	Angle Units	Angle units		Write	1=Degrees, 2=Radians
MV	161	System Phase Selection	Phases included in system values		Write	1=3 Phase, 2=R Phase and S Phase, 3=S Phase and T Phase, 4=R Phase and T Phase
MV	162	Power Spectrum	Wideband or fundamental power measurement		Write	1=Wideband, 2=Fundamental
MV	163	Power Units	Power units		Write	1=Kilowatts, 2=Watts, 3=Megawatts
MV	173	Energy Units	Energy units		Write	1=Kilowatt Hours, 2=Watt Hours, 3=Megawatt Hours
MV	181	Demand Synchronization Mode	Demand window synchronization source		Write	1=No Synchronization, 2=Setup Button, 3=Binary Input 1 (falling), 4=Binary Input 1 (rising), 5=Binary Input 2 (falling), 6=Binary Input 2 (rising), 7=Every Hour, 8=Every Day
MV	1103	CVT Status	R phase CVT status		Read	1=No CVT, 2=No Error, 3=Detection Error, 4=Communication Error, 5=Configuration Error, 6=Version Error, 7=Technology Error
MV	1104	PowerPrint Identity Status	R phase PowerPrint identity status		Write	1=No Identity, 2=Identity Saved, 3=Identity Error
MV	1154	Current Sensor Technology	R phase CVT current sensor technology		Read	1=Unknown Technology, 2=Rogowski Coil, 3=Current Transformer
CSV	1010	CVT Serial Number	R phase CVT serial number		Read
CSV	1020	CVT Model	R phase CVT model		Read
FILE	25000	User Configuration	Read-only copy of the configuration		Read

Object ID lookup: Johnson Controls EMCOMMS 3-Phase Energy Meter point IDs by name

ACC210Pulse Input 1
ACC220Pulse Input 2
ACC700Total Real Energy (ACC)
ACC702Total Real Energy (ACC) - Import
ACC704Total Real Energy (ACC) - Export
ACC706Total Real Energy (ACC) - Net
ACC720System Real Energy (ACC)
ACC722System Real Energy (ACC) - Import
ACC724System Real Energy (ACC) - Export
ACC740Total Reactive Energy (ACC)
ACC742Total Reactive Energy (ACC) - Import
ACC744Total Reactive Energy (ACC) - Export
ACC760Total Apparent Energy (ACC)
ACC762Total Apparent Energy (ACC) - Import
ACC764Total Apparent Energy (ACC) - Export
ACC1700Total R Phase Real Energy (ACC)
ACC1702Total R Phase Real Energy (ACC) - Import
ACC1704Total R Phase Real Energy (ACC) - Export
ACC1706Total R Phase Real Energy (ACC) - Net
ACC1740Total R Phase Reactive Energy (ACC)
ACC1742Total R Phase Reactive Energy (ACC) - Import
ACC1744Total R Phase Reactive Energy (ACC) - Export
ACC1760Total R Phase Apparent Energy (ACC)
ACC1762Total R Phase Apparent Energy (ACC) - Import
ACC1764Total R Phase Apparent Energy (ACC) - Export
AI310Temperature
AI312Temperature - Smoothed
AI314Temperature - Minimum
AI316Temperature - Maximum
AI318Temperature - Average
AI380Power Supply Voltage
AI382Power Supply Voltage - Smoothed
AI384Power Supply Voltage - Minimum
AI386Power Supply Voltage - Maximum
AI388Power Supply Voltage - Average
AI410Line Frequency
AI412Line Frequency - Smoothed
AI414Line Frequency - Minimum
AI416Line Frequency - Maximum
AI418Line Frequency - Average
AI420Phase Average RMS Voltage
AI422Phase Average RMS Voltage - Smoothed
AI424Phase Average RMS Voltage - Minimum
AI426Phase Average RMS Voltage - Maximum
AI428Phase Average RMS Voltage - Average
AI450Phase to Phase Average RMS Voltage
AI452Phase to Phase Average RMS Voltage - Smoothed
AI454Phase to Phase Average RMS Voltage - Minimum
AI456Phase to Phase Average RMS Voltage - Maximum
AI458Phase to Phase Average RMS Voltage - Average
AI520Phase Average RMS Current
AI522Phase Average RMS Current - Smoothed
AI524Phase Average RMS Current - Minimum
AI526Phase Average RMS Current - Maximum
AI528Phase Average RMS Current - Average
AI540Phase Average Current Angle
AI542Phase Average Current Angle - Smoothed
AI544Phase Average Current Angle - Minimum
AI546Phase Average Current Angle - Maximum
AI548Phase Average Current Angle - Average
AI550System Power Factor
AI552System Power Factor - Smoothed
AI554System Power Factor - Minimum
AI556System Power Factor - Maximum
AI558System Power Factor - Average
AI600Total Real Power
AI602Total Real Power - Smoothed
AI604Total Real Power - Minimum
AI606Total Real Power - Maximum
AI608Total Real Power - Average
AI610Phase Average Real Power
AI612Phase Average Real Power - Smoothed
AI614Phase Average Real Power - Minimum
AI616Phase Average Real Power - Maximum
AI618Phase Average Real Power - Average
AI620Net Real Power
AI622Net Real Power - Smoothed
AI624Net Real Power - Minimum
AI626Net Real Power - Maximum
AI628Net Real Power - Overall Average
AI630Net Real Power - Import Average
AI632Net Real Power - Export Average
AI640Total Reactive Power
AI642Total Reactive Power - Smoothed
AI644Total Reactive Power - Minimum
AI646Total Reactive Power - Maximum
AI648Total Reactive Power - Average
AI650Phase Average Reactive Power
AI652Phase Average Reactive Power - Smoothed
AI654Phase Average Reactive Power - Minimum
AI656Phase Average Reactive Power - Maximum
AI658Phase Average Reactive Power - Average
AI660Total Apparent Power
AI662Total Apparent Power - Smoothed
AI664Total Apparent Power - Minimum
AI666Total Apparent Power - Maximum
AI668Total Apparent Power - Average
AI670Phase Average Apparent Power
AI672Phase Average Apparent Power - Smoothed
AI674Phase Average Apparent Power - Minimum
AI676Phase Average Apparent Power - Maximum
AI678Phase Average Apparent Power - Average
AI700Total Real Energy (AI)
AI702Total Real Energy (AI) - Import
AI704Total Real Energy (AI) - Export
AI706Total Real Energy (AI) - Net
AI720System Real Energy (AI)
AI722System Real Energy (AI) - Import
AI724System Real Energy (AI) - Export
AI740Total Reactive Energy (AI)
AI742Total Reactive Energy (AI) - Import
AI744Total Reactive Energy (AI) - Export
AI760Total Apparent Energy (AI)
AI762Total Apparent Energy (AI) - Import
AI764Total Apparent Energy (AI) - Export
AI800Demand Total Real Power
AI802Demand Total Real Power - Previous
AI804Demand Total Real Power - Minimum
AI806Demand Total Real Power - Maximum
AI820Demand Net Real Power
AI822Demand Net Real Power - Previous
AI824Demand Net Real Power - Minimum
AI826Demand Net Real Power - Maximum
AI840Demand Total Reactive Power
AI842Demand Total Reactive Power - Previous
AI844Demand Total Reactive Power - Minimum
AI846Demand Total Reactive Power - Maximum
AI860Demand Total Apparent Power
AI862Demand Total Apparent Power - Previous
AI864Demand Total Apparent Power - Minimum
AI866Demand Total Apparent Power - Maximum
AI1420R Phase RMS Voltage
AI1422R Phase RMS Voltage - Smoothed
AI1424R Phase RMS Voltage - Minimum
AI1426R Phase RMS Voltage - Maximum
AI1428R Phase RMS Voltage - Average
AI1440R to S Phase Voltage Angle
AI1442R to S Phase Voltage Angle - Smoothed
AI1444R to S Phase Voltage Angle - Minimum
AI1446R to S Phase Voltage Angle - Maximum
AI1448R to S Phase Voltage Angle - Average
AI1450R to S Phase RMS Voltage
AI1452R to S Phase RMS Voltage - Smoothed
AI1454R to S Phase RMS Voltage - Minimum
AI1456R to S Phase RMS Voltage - Maximum
AI1458R to S Phase RMS Voltage - Average
AI1520RMS Current
AI1522RMS Current - Smoothed
AI1524RMS Current - Minimum
AI1526RMS Current - Maximum
AI1528RMS Current - Average
AI1540Current Angle
AI1542Current Angle - Smoothed
AI1544Current Angle - Minimum
AI1546Current Angle - Maximum
AI1548Current Angle - Average
AI1550Power Factor
AI1552Power Factor - Smoothed
AI1554Power Factor - Minimum
AI1556Power Factor - Maximum
AI1558Power Factor - Average
AI1600Real Power
AI1602Real Power - Smoothed
AI1604Real Power - Minimum
AI1606Real Power - Maximum
AI1608Real Power - Overall Average
AI1610Real Power - Import Average
AI1612Real Power - Export Average
AI1640Reactive Power
AI1642Reactive Power - Smoothed
AI1644Reactive Power - Minimum
AI1646Reactive Power - Maximum
AI1648Reactive Power - Overall Average
AI1650Reactive Power - Import Average
AI1652Reactive Power - Export Average
AI1660Apparent Power
AI1662Apparent Power - Smoothed
AI1664Apparent Power - Minimum
AI1666Apparent Power - Maximum
AI1668Apparent Power - Overall Average
AI1670Apparent Power - Import Average
AI1672Apparent Power - Export Average
AI1700Total Real Energy (AI)
AI1702Total Real Energy (AI) - Import
AI1704Total Real Energy (AI) - Export
AI1706Total Real Energy (AI) - Net
AI1740Total Reactive Energy (AI)
AI1742Total Reactive Energy (AI) - Import
AI1744Total Reactive Energy (AI) - Export
AI1760Total Apparent Energy (AI)
AI1762Total Apparent Energy (AI) - Import
AI1764Total Apparent Energy (AI) - Export
AI1800Demand Real Power
AI1802Demand Real Power - Previous
AI1804Demand Real Power - Minimum
AI1806Demand Real Power - Maximum
AI1840Demand Reactive Power
AI1842Demand Reactive Power - Previous
AI1844Demand Reactive Power - Minimum
AI1846Demand Reactive Power - Maximum
AI1860Demand Apparent Power
AI1862Demand Apparent Power - Previous
AI1864Demand Apparent Power - Minimum
AI1866Demand Apparent Power - Maximum
AV103Reset Count
AV104Up Time
AV123MAC Address
AV124RS485 Baud Rate
AV134Smoothed Temperature Response Time
AV142Smoothed Frequency Response Time
AV144Smoothed Voltage Response Time
AV154Smoothed Current Response Time
AV164Smoothed Power Response Time
AV174Energy Timestamp
AV182Demand Synchronization Hour
AV183Demand Window Time
AV184Elapsed Demand Window
AV186Demand Window Count
AV190Configuration Reset
AV192Statistics Reset
AV194Energy Reset Count
AV208Pulse Input Debounce Time
AV242PowerPrint Frequency
AV244PowerPrint Frequency Tolerance
AV246PowerPrint Voltage Tolerance
AV248PowerPrint Voltage Angle Tolerance
AV400Active Conditions
AV401Previous Conditions
AV1140Voltage Rating
AV1142Voltage Multiplier
AV1144PowerPrint Voltage
AV1146PowerPrint Voltage Angle
AV1150Current Rating
AV1152Current Multiplier
AV1162Power Multiplier
AV1192Statistics Reset
AV1400Active Conditions
AV1401Previous Conditions
BI200Setup Button
BI201Binary Input 1
BI202Binary Input 2
BV111Identify Meter
BV112Auto Protocol
BV113Auto MAC Address
BV114Auto Baud Rate
BV116Auto Parity
BV195Auto Reset Statistics
BV240PowerPrint Alarm
BV241PowerPrint
BV1102CVT Present
BV1161Power Multiplier Override
MV122RS485 Protocol
MV126RS485 Parity
MV133Temperature Units
MV152System Current Sensor Technology
MV153Angle Units
MV161System Phase Selection
MV162Power Spectrum
MV163Power Units
MV173Energy Units
MV181Demand Synchronization Mode
MV1103CVT Status
MV1104PowerPrint Identity Status
MV1154Current Sensor Technology
CSV1010CVT Serial Number
CSV1020CVT Model
FILE25000User Configuration

Integration notes

Objects from the BACnet Protocol Guide EMCOMMS (LIT-12013039, Rev 0A, 2018-08-17), pages 10-48; the guide describes one object per heading rather than in a single table.
Only the system and R phase objects are listed. S phase and T phase objects repeat the R phase ones at instance +1000 and +2000 (for example AI 2600 and AI 3600 are S and T phase real power).
Statistic and part objects (Smoothed, Minimum, Maximum, Average, Previous, Import, Export, Net) are printed only as an ID with a short label under their main object; the names here join the main object name and that label and may differ from the object names the meter reports.
Units are the defaults. Power, energy, temperature and angle units follow MSV 163, MSV 173, MSV 133 and MSV 153.
Access W covers read/write objects, write-only reset keys (AV 190, AV 192, AV 1192) and W0 objects, where only writing 0 is allowed (it resets that statistic or clears latched flags).
The guide lists Accumulator objects (energy and pulse counts) next to Analog Input versions of the same energy values; both read the same internal register.

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 EM Series 3-Phase Energy Meter with EMCOMMS Module (BACnet MS/TP) 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 Johnson Controls EM Series 3-Phase Energy Meter with EMCOMMS Module (BACnet MS/TP)

How many BACnet points does the Johnson Controls EM Series 3-Phase Energy Meter with EMCOMMS Module (BACnet MS/TP) have?

This list has 267 BACnet objects: 179 analog inputs, 34 analog values, 3 binary inputs, 10 binary values, 1 file, 13 multi-state values, 25 accumulators, 2 characterstring values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which Johnson Controls EM Series 3-Phase Energy Meter with EMCOMMS Module (BACnet MS/TP) BACnet points are writable?

199 of the 267 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 Johnson Controls EM Series 3-Phase Energy Meter with EMCOMMS Module (BACnet MS/TP) BACnet documentation?

The source is BACnet Protocol Guide EMCOMMS (LIT-12013039), revision 2018-08-17 (Rev 0A), published free by Johnson Controls at https://docs.johnsoncontrols.com/bas/api/khub/documents/tmILegJJiJ6TGn6bbAol6Q/content.

What are the minimum BACnet points to integrate the Johnson Controls EM Series 3-Phase Energy Meter with EMCOMMS Module (BACnet MS/TP)?

Start with AI 600 Total Real Power (Total real power, kW); AI 700 Total Real Energy (AI) (Total real energy, kWh); AI 800 Demand Total Real Power (Demand real power over the demand window, kW); AI 420 Phase Average RMS Voltage (Average phase voltage, V); AI 520 Phase Average RMS Current (Average phase current, A); AI 550 System Power Factor (System true power factor); AI 410 Line Frequency (Line frequency, Hz); AV 400 Active Conditions (Bit-coded active system conditions).

How do I check these points on the real EM Series 3-Phase Energy Meter with EMCOMMS Module (BACnet MS/TP)?

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 Johnson Controls BACnet points lists

Source: BACnet Protocol Guide EMCOMMS · LIT-12013039 · rev. 2018-08-17 (Rev 0A). Object names, instances and units are reproduced as published; descriptions are our own.

Johnson Controls EM Series 3-Phase Energy Meter with EMCOMMS Module (BACnet MS/TP) BACnet points list

BMS integration notes: Johnson Controls EM Series 3-Phase Energy Meter with EMCOMMS Module (BACnet MS/TP)

Minimum points to map

Network setup

Watch out for

Johnson Controls EM Series 3-Phase Energy Meter with EMCOMMS Module (BACnet MS/TP) BACnet objects

Integration notes

Questions about the Johnson Controls EM Series 3-Phase Energy Meter with EMCOMMS Module (BACnet MS/TP)

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Johnson Controls ATC1100 Fan Coil Controller - Application #2003 (Two-Pipe, On/Off Valve, Staged Fan, On/Off Damper)

Johnson Controls ATC1100 Fan Coil Controller - Application #2004 (Two-Pipe, 0-10V Valve, Staged Fan, On/Off Damper)

Johnson Controls ATC1100 Fan Coil Controller - Application #2005 (Two-Pipe, On/Off Valve, Var-Speed Fan, Floating Damper)

Johnson Controls ATC1100 Fan Coil Controller - Application #2006 (Two-Pipe, 0-10V Valve, Var-Speed Fan, Floating Damper)

Johnson Controls ATC1100 Fan Coil Controller - Application #2007 (Two-Pipe, On/Off Valve, Var-Speed Fan, On/Off Damper)

Johnson Controls ATC1100 Fan Coil Controller - Application #2008 (Two-Pipe, 0-10V Valve, Var-Speed Fan, On/Off Damper)

Johnson Controls ATC1500 Fan Coil Controller - Application #3001 (Two-Pipe, On/Off Valve, Staged Fan, Floating Damper)

Johnson Controls ATC1500 Fan Coil Controller - Application #3002 (Two-Pipe, On/Off Valve, Staged Fan, On/Off Damper)

Johnson Controls ATC1500 Fan Coil Controller - Application #3003 (Two-Pipe, 0-10V Valve, Staged Fan, Floating Damper)

Johnson Controls ATC1500 Fan Coil Controller - Application #3004 (Two-Pipe, 0-10V Valve, Staged Fan, On/Off Damper)

Johnson Controls ATC1500 Fan Coil Controller - Application #3005 (Two-Pipe, On/Off Valve, Var-Speed Fan, Floating Damper)

Johnson Controls ATC1500 Fan Coil Controller - Application #3006 (Two-Pipe, On/Off Valve, Var-Speed Fan, On/Off Damper)

Johnson Controls ATC1500 Fan Coil Controller - Application #3007 (Two-Pipe, 0-10V Valve, Var-Speed Fan, Floating Damper)

Johnson Controls ATC1500 Fan Coil Controller - Application #3008 (Two-Pipe, 0-10V Valve, Var-Speed Fan, On/Off Damper)

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Johnson Controls ATC1500 Fan Coil Controller - Application #4002 (Four-Pipe, On/Off Valve, Staged Fan, On/Off Damper)

Johnson Controls ATC1500 Fan Coil Controller - Application #4003 (Four-Pipe, 0-10V Valve, Staged Fan, Floating Damper)

Johnson Controls ATC1500 Fan Coil Controller - Application #4004 (Four-Pipe, 0-10V Valve, Staged Fan, On/Off Damper)

Johnson Controls ATC1500 Fan Coil Controller - Application #4005 (Four-Pipe, Six-Way Valve, Staged Fan, Floating Damper)

Johnson Controls ATC1500 Fan Coil Controller - Application #4006 (Four-Pipe, Six-Way Valve, Staged Fan, On/Off Damper)

Johnson Controls ATC1500 Fan Coil Controller - Application #4007 (Four-Pipe, On/Off Valve, Var-Speed Fan, Floating Damper)

Johnson Controls ATC1500 Fan Coil Controller - Application #4008 (Four-Pipe, On/Off Valve, Var-Speed Fan, On/Off Damper)

Johnson Controls ATC1500 Fan Coil Controller - Application #4009 (Four-Pipe, 0-10V Valve, Var-Speed Fan, Floating Damper)

Johnson Controls ATC1500 Fan Coil Controller - Application #4010 (Four-Pipe, 0-10V Valve, Var-Speed Fan, On/Off Damper)

Johnson Controls ATC1500 Fan Coil Controller - Application #4011 (Four-Pipe, Six-Way Valve, Var-Speed Fan, Floating Damper)

Johnson Controls ATC1500 Fan Coil Controller - Application #4012 (Four-Pipe, Six-Way Valve, Var-Speed Fan, On/Off Damper)

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