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WattsOn-MCM modular multi-circuit meter (BACnet IP)

Multi-circuit power and energy meter (submeter) · BACnet points list

Elkor WattsOn-MCM modular multi-circuit meter (BACnet IP) BACnet points list

Updated 6 November 2026

Short answer

The WattsOn-MCM serves up to 60 metered channels (20 cards x 3) over BACnet IP. Fixed objects give network status, fault bitstrings, read-only settings, the MCM-V voltages, PT ratios, angles and frequency. Card data (per-card info and per-channel current, power, PF, energy) comes in groups that start at 131072; this list gives the first object of each group and the formula for the rest. Everything is read-only over BACnet.

This page lists 124 BACnet objects for the Elkor WattsOn-MCM modular multi-circuit meter (BACnet IP) — 0 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Elkor’s own free documentation, linked below.

Manufacturer: Elkor
Model: WattsOn-MCM modular multi-circuit meter (BACnet IP)
Equipment: Multi-circuit power and energy meter (submeter)
Equipment type: Thermostats, sensors & meters
BACnet objects: 124 (0 writable)
Transport: BACnet IP
Firmware: Not stated
Default device instance: -1 (generated from the MAC address)
Also known as: WattsOn-MCM, WattsOn MCM, MCM-V, WMC-PM, WMC-IM, Elkor multi-circuit meter BACnet
Source document: WattsOn-MCM BACnet Object List

Download CSV 124 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 Elkor’s current documentation and the live device before use. Not official Elkor information. Terms of use.

BMS integration notes: Elkor WattsOn-MCM modular multi-circuit meter (BACnet IP)

Integration in brief

Set up cards, CT ratios and voltage mapping in the web interface; the BMS only reads. Map per-channel power (P11), net energy (P13) and current (P10) from the card groups using the instance formula, plus the MCM-V voltages and frequency and the fault_code bitstring.

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 133632	P11-m Power m (ni)	Channel 1 real power, kW (+1 per channel)	Read
AI 134144	P13-m Energy m (ni)	Channel 1 net energy, kWh (+1 per channel)	Read
AI 133376	P10-m Current m (ni)	Channel 1 current, A (+1 per channel)	Read
AI 133888	P12-m PF m (ni)	Channel 1 power factor (+1 per channel)	Read
AI 135800	P19-121 Voltage Va	Phase A line-to-neutral voltage	Read
AI 135956	P20-021 Frequency VI	Line frequency, Hz	Read
Other 601	fault_code	Device fault bits (card, comms, voltage)	Read

Network setup

BACnet port, device instance, APDU size, segmentation and BBMD foreign registration are set in the web interface; objects 3070-3078 (CSV and BI) show the values.
Device instance -1 means it is generated from the MAC address.
Ethernet or Wi-Fi, static or DHCP (MI 3202 / MI 3203).

Watch out for

Channel objects only appear for fitted cards; a polled object can vanish if a card is removed.
Channel number, not card number, drives the per-channel offset: channel = (card - 1) x 3 + phase (A=1, B=2, C=3).
P14/P15 unit codes are printed swapped in the source table.

Elkor WattsOn-MCM modular multi-circuit meter (BACnet IP) 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.

124 of 124 shown

Type

AnalogBinaryMulti-state

Units

Show

Elkor WattsOn-MCM modular multi-circuit meter (BACnet IP) BACnet Points List
			Description
FILE	10	/spiffs/template.json			Read
FILE	20	/spiffs/registers.json			Read
MI	300	active_connection	Active link: 1 Ethernet, 2 Wi-Fi, 3 Wi-Fi AP		Read
CSV	300	active_ip			Read
DTV	300	utc_datetime	Current date/time (NTP or battery clock)		Read
CSV	301	active_nm			Read
CSV	302	active_gw			Read
CSV	303	active_dns0			Read
CSV	304	active_dns1			Read
CSV	305	eth_mac			Read
CSV	306	wifi_mac			Read
Other	600	cards_present	Bitstring Value: slots with a card fitted		Read
Othermin	601	fault_code	Bitstring Value: device fault flags		Read
Other	602	card_fault	Bitstring Value: cards with a fault		Read
Other	603	voltage_fault	Bitstring Value: cards with a voltage mismatch		Read
Other	604	missing_fault	Bitstring Value: configured cards now missing		Read
CSV	3009	mbtcp_port			Read
CSV	3010	http_port			Read
CSV	3013	api_udp_port			Read
BI	3015	post_en			Read
CSV	3016	post_seconds			Read
BI	3017	post_auth_en			Read
CSV	3018	post_timeout_s			Read
BI	3019	post_buf_en			Read
CSV	3020	post_buf_limit			Read
BI	3021	ntp_en			Read
CSV	3022	ntp_listen_port			Read
CSV	3023	ntp_port_0			Read
CSV	3024	ntp_port_1			Read
CSV	3025	ntp_port_2			Read
CSV	3026	ntp_rate_m			Read
CSV	3027	ntp_timeout_ms			Read
CSV	3028	ntp_retry_ms			Read
CSV	3029	eth_static_ip			Read
CSV	3030	eth_static_nm			Read
CSV	3031	eth_static_gw			Read
CSV	3032	eth_static_dn0			Read
CSV	3033	eth_static_dn1			Read
CSV	3034	wifi_static_ip			Read
CSV	3035	wifi_static_nm			Read
CSV	3036	wifi_static_gw			Read
CSV	3037	wifi_static_dn0			Read
CSV	3038	wifi_static_dn1			Read
CSV	3040	http_sto_ms			Read
CSV	3041	http_rto_ms			Read
CSV	3042	auto_reboot_s			Read
CSV	3043	reconnect_s			Read
CSV	3048	wifi_chan_start			Read
CSV	3049	wifi_chan_count			Read
CSV	3050	wifi_max_tx_pwr			Read
CSV	3070	bac_port	BACnet UDP port		Read
CSV	3071	bac_instance	Device instance (-1 = from MAC)		Read
BI	3073	mbtcp_en			Read
CSV	3074	bac_apdu_max			Read
CSV	3075	bac_frgn_reg_ip	BBMD address for foreign registration		Read
CSV	3076	bac_frgn_reg_s	Foreign registration TTL, s		Read
BI	3077	bac_segment_en			Read
CSV	3078	bac_seg_to_ms			Read
BI	3079	mqtt_retain_en			Read
CSV	3080	mqtt_max_flying			Read
CSV	3081	mqtt_version_id			Read
BI	3082	mqtt_no_cid_en			Read
BI	3083	mqtt_en			Read
BI	3084	mqtt_persist_en			Read
BI	3085	mqtt_aliases_en			Read
MI	3202	eth_mode	Ethernet mode: 0 static, 1 DHCP		Read
MI	3203	wifi_mode	Wi-Fi mode: 0 static, 1 DHCP		Read
CSV	3250	name			Read
CSV	3251	wifi_ssid			Read
CSV	3254	post_url			Read
CSV	3255	post_auth_user			Read
CSV	3257	ntp_server_0			Read
CSV	3258	ntp_server_1			Read
CSV	3259	ntp_server_2			Read
CSV	3260	post_file_0			Read
CSV	3261	post_file_1			Read
CSV	3262	post_file_2			Read
CSV	3263	post_file_3			Read
CSV	3264	post_file_4			Read
CSV	3270	post_method			Read
CSV	3271	post_headers			Read
CSV	3272	post_ct			Read
CSV	3273	http_headers			Read
CSV	3279	wifi_country			Read
CSV	3350	post_addr_0			Read
CSV	3351	post_addr_1			Read
CSV	3352	post_addr_2			Read
CSV	3353	post_addr_3			Read
CSV	3354	post_addr_4			Read
CSV	131072	P01-n Name n	P01, first of 20: Friendly name of card in slot n		Read
CSV	131328	P02-n ClassName n	P02, first of 20: Type of card in slot n		Read
CSV	131584	P03-n PartNumber n	P03, first of 20: Part number of card in slot n		Read
AI	132096	P05-n ClassID n	P05, first of 20: Type ID of card in slot n		Read
AI	132352	P06-n Serial n	P06, first of 20: Serial number of card in slot n		Read
AI	132608	P07-n HWVersion n	P07, first of 20: Hardware version of card n		Read
AI	132864	P08-n FWVersion n	P08, first of 20: Firmware version of card n		Read
AI	133120	P09-x ChanName/Note m (ni)	P09, first of 120: channel name/note text (interleaved)		Read
AImin	133376	P10-m Current m (ni)	P10, first of 60: Current of channel m	A	Read
AImin	133632	P11-m Power m (ni)	P11, first of 60: Real Power of channel m	kW	Read
AImin	133888	P12-m PF m (ni)	P12, first of 60: Power factor of channel m		Read
AImin	134144	P13-m Energy m (ni)	P13, first of 60: Net energy of channel m	kWh	Read
AI	134400	P14-m React Pwr m	P14, first of 60: Reactive power of channel m	kvar	Read
AI	134656	P15-m Apprnt Pwr m	P15, first of 60: Apparent power of channel m	kVA	Read
AI	134912	P16-x CTRatioPrimary/Secondary	P16, first of 60: CT ratio primary/secondary (interleaved)		Read
AI	135168	P17-m Phase Comp m (ni)	P17, first of 60: CT phase compensation value		Read
Other	135424	P18-n Chan Cfg n	Bitstring Value. P18, first of 20: Channel configuration bitmask		Read
AImin	135800	P19-121 Voltage Va		V	Read
AI	135801	P19-121 Voltage Vb		V	Read
AI	135802	P19-121 Voltage Vc		V	Read
AI	135803	P19-121 Voltage Va-Vb		V	Read
AI	135804	P19-121 Voltage Vb-Vc		V	Read
AI	135805	P19-121 Voltage Vc-Va		V	Read
AImin	135956	P20-021 Frequency VI		Hz	Read
AI	136312	P21-121 PTRatioPrimary Va			Read
AI	136313	P21-122 PTRatioSecondary Va			Read
AI	136314	P21-123 PTRatioPrimary Vb			Read
AI	136315	P21-124 PTRatioSecondary Vb			Read
AI	136316	P21-125 PTRatioPrimary Vc			Read
AI	136317	P21-126 PTRatioSecondary Vc			Read
AI	136508	P22-061 VAngle Va			Read
AI	136509	P22-062 VAngle Vb			Read
AI	136510	P22-063 VAngle Vc			Read
AI	136704	P23-m Energy Imp m	P23, first of 60: Import energy of channel m	kWh	Read
AI	136960	P24-m Energy Exp m	P24, first of 60: Export energy of channel m	kWh	Read

Object ID lookup: Elkor WattsOn-MCM modular multi-circuit meter point IDs by name

FILE10/spiffs/template.json
FILE20/spiffs/registers.json
MI300active_connection
CSV300active_ip
DTV300utc_datetime
CSV301active_nm
CSV302active_gw
CSV303active_dns0
CSV304active_dns1
CSV305eth_mac
CSV306wifi_mac
CSV3009mbtcp_port
CSV3010http_port
CSV3013api_udp_port
BI3015post_en
CSV3016post_seconds
BI3017post_auth_en
CSV3018post_timeout_s
BI3019post_buf_en
CSV3020post_buf_limit
BI3021ntp_en
CSV3022ntp_listen_port
CSV3023ntp_port_0
CSV3024ntp_port_1
CSV3025ntp_port_2
CSV3026ntp_rate_m
CSV3027ntp_timeout_ms
CSV3028ntp_retry_ms
CSV3029eth_static_ip
CSV3030eth_static_nm
CSV3031eth_static_gw
CSV3032eth_static_dn0
CSV3033eth_static_dn1
CSV3034wifi_static_ip
CSV3035wifi_static_nm
CSV3036wifi_static_gw
CSV3037wifi_static_dn0
CSV3038wifi_static_dn1
CSV3040http_sto_ms
CSV3041http_rto_ms
CSV3042auto_reboot_s
CSV3043reconnect_s
CSV3048wifi_chan_start
CSV3049wifi_chan_count
CSV3050wifi_max_tx_pwr
CSV3070bac_port
CSV3071bac_instance
BI3073mbtcp_en
CSV3074bac_apdu_max
CSV3075bac_frgn_reg_ip
CSV3076bac_frgn_reg_s
BI3077bac_segment_en
CSV3078bac_seg_to_ms
BI3079mqtt_retain_en
CSV3080mqtt_max_flying
CSV3081mqtt_version_id
BI3082mqtt_no_cid_en
BI3083mqtt_en
BI3084mqtt_persist_en
BI3085mqtt_aliases_en
MI3202eth_mode
MI3203wifi_mode
CSV3250name
CSV3251wifi_ssid
CSV3254post_url
CSV3255post_auth_user
CSV3257ntp_server_0
CSV3258ntp_server_1
CSV3259ntp_server_2
CSV3260post_file_0
CSV3261post_file_1
CSV3262post_file_2
CSV3263post_file_3
CSV3264post_file_4
CSV3270post_method
CSV3271post_headers
CSV3272post_ct
CSV3273http_headers
CSV3279wifi_country
CSV3350post_addr_0
CSV3351post_addr_1
CSV3352post_addr_2
CSV3353post_addr_3
CSV3354post_addr_4
CSV131072P01-n Name n
CSV131328P02-n ClassName n
CSV131584P03-n PartNumber n
AI132096P05-n ClassID n
AI132352P06-n Serial n
AI132608P07-n HWVersion n
AI132864P08-n FWVersion n
AI133120P09-x ChanName/Note m (ni)
AI133376P10-m Current m (ni)
AI133632P11-m Power m (ni)
AI133888P12-m PF m (ni)
AI134144P13-m Energy m (ni)
AI134400P14-m React Pwr m
AI134656P15-m Apprnt Pwr m
AI134912P16-x CTRatioPrimary/Secondary
AI135168P17-m Phase Comp m (ni)
AI135800P19-121 Voltage Va
AI135801P19-121 Voltage Vb
AI135802P19-121 Voltage Vc
AI135803P19-121 Voltage Va-Vb
AI135804P19-121 Voltage Vb-Vc
AI135805P19-121 Voltage Vc-Va
AI135956P20-021 Frequency VI
AI136312P21-121 PTRatioPrimary Va
AI136313P21-122 PTRatioSecondary Va
AI136314P21-123 PTRatioPrimary Vb
AI136315P21-124 PTRatioSecondary Vb
AI136316P21-125 PTRatioPrimary Vc
AI136317P21-126 PTRatioSecondary Vc
AI136508P22-061 VAngle Va
AI136509P22-062 VAngle Vb
AI136510P22-063 VAngle Vc
AI136704P23-m Energy Imp m
AI136960P24-m Energy Exp m

Integration notes

Card parameter objects: instance = 131072 + (Parameter ID - 1) x 256 + (card number - 1) for per-card groups, or + (channel number - 1) for per-channel groups (channels 1-60; channel 4 = card 2 phase A). Only the first object of each group is listed, with the template name as printed.
Card objects exist only when a card is fitted in that slot and supports the parameter; a full system has over 1,000 objects. P14, P15, P23 and P24 are only on some card models.
P14 (reactive power) is printed with unit code 9 and P15 (apparent power) with code 12; in BACnet those codes mean kVA and kvar, the reverse of the printed unit names. Units here follow the names (kvar, kVA).
fault_code, card_fault, voltage_fault, missing_fault, cards_present and P18 Chan Cfg are BitString Value objects (listed as type Other). Network status rows are typed 'CS' in the table and listed as CharacterString Values.
Up to 100 user-defined AIs (instances 0-99) can be created in the web interface; they are not listed. The Structured View objects are also left out.
All settings are read-only over BACnet and are changed in the web interface (System > Advanced Configuration).

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 WattsOn-MCM modular multi-circuit meter (BACnet IP) 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 Elkor WattsOn-MCM modular multi-circuit meter (BACnet IP)

How many BACnet points does the Elkor WattsOn-MCM modular multi-circuit meter (BACnet IP) have?

This list has 124 BACnet objects: 31 analog inputs, 11 binary inputs, 2 files, 3 multi-state inputs, 70 characterstring values, 1 datetime value, 6 others. The exact set on a given unit depends on its firmware, installed options and configuration.

Which Elkor WattsOn-MCM modular multi-circuit meter (BACnet IP) BACnet points are writable?

None of the listed objects are marked writable in the source documentation.

Where is the official Elkor WattsOn-MCM modular multi-circuit meter (BACnet IP) BACnet documentation?

The source is WattsOn-MCM BACnet Object List, published free by Elkor at https://www.elkor.net/pdfs/MCM-BACnet_Object_List.pdf.

What are the minimum BACnet points to integrate the Elkor WattsOn-MCM modular multi-circuit meter (BACnet IP)?

Start with AI 133632 P11-m Power m (ni) (Channel 1 real power, kW (+1 per channel)); AI 134144 P13-m Energy m (ni) (Channel 1 net energy, kWh (+1 per channel)); AI 133376 P10-m Current m (ni) (Channel 1 current, A (+1 per channel)); AI 133888 P12-m PF m (ni) (Channel 1 power factor (+1 per channel)); AI 135800 P19-121 Voltage Va (Phase A line-to-neutral voltage); AI 135956 P20-021 Frequency VI (Line frequency, Hz); Other 601 fault_code (Device fault bits (card, comms, voltage)).

How do I check these points on the real WattsOn-MCM modular multi-circuit meter (BACnet IP)?

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 Elkor BACnet points lists

Source: WattsOn-MCM BACnet Object List. Object names, instances and units are reproduced as published; descriptions are our own.