ABB M1M 96 power meter

Register map(s) for this device, with a note of how far each has been checked. Addresses are 0-based, as on the wire. Scale and byte order are confirmed only at the hardware-verified rung.

coherence-checked

Round-trips through a real Modbus stack with no overlapping addresses and a word-order-sensitive codec — the map is internally coherent and wire-decodable. Does NOT prove byte-order or scaling match a real device: the emulator is seeded from the map's own types, so a uniformly wrong byte-order still round-trips. Only hardware-verified confirms byte-order/scale on the wire.

point	address (0-based)	type	scale	unit
Active energy - import	20480	U64BE	0.01	kWh
Active energy - export	20484	U64BE	0.01	kWh
Reactive energy - import	20492	U64BE	0.01	kvarh
Reactive energy - export	20496	U64BE	0.01	kvarh
Apparent energy - import	20504	U64BE	0.01	kVA
Total Active energy - import (Tariffs)	20848	U16	0.01	kWh
Total Active energy - export (Tariffs)	20880	U16	0.01	kWh
Total Reactive energy - import (Tariffs)	20912	U16	0.01	kvarh
Total Reactive energy - export (Tariffs)	20944	U16	0.01	kvarh
Three phase system voltage	23296	U32BE	0.1	V
Phase voltage L1	23298	U32BE	0.1	V
Phase voltage L2	23300	U32BE	0.1	V
Phase voltage L3	23302	U32BE	0.1	V
Line voltage L1-L2	23304	U32BE	0.1	V
Line voltage L3-L2	23306	U32BE	0.1	V
Line voltage L1-L3	23308	U32BE	0.1	V
Three phase system current	23310	U32BE	0.01	A
Current L1	23312	U32BE	0.01	A
Current L2	23314	U32BE	0.01	A
Current L3	23316	U32BE	0.01	A
Current N	23318	U32BE	0.01	A
Active Power total	23322	I32BE	0.01	W
Active Power L1	23324	I32BE	0.01	W
Active Power L2	23326	I32BE	0.01	W
Active power L3	23328	I32BE	0.01	W
Reactive Power total	23330	I32BE	0.01	VAR
Reactive Power L1	23332	I32BE	0.01	VAR
Reactive Power L2	23334	I32BE	0.01	VAR
Reactive Power L3	23336	I32BE	0.01	VAR
Apparent Power total	23338	I32BE	0.01	VAR
Apparent Power L1	23340	I32BE	0.01	VA
Apparent Power L2	23342	I32BE	0.01	VA
Apparent power L3	23344	I32BE	0.01	VA
Frequency	23346	U16	0.01	Hz
Power Total Angle	23347	I16	0.1	°
Power Angle L1	23348	I16	0.1	°
Power Angle L2	23349	I16	0.1	°
Power Angle L3	23350	I16	0.1	°
Voltage Angle L1	23351	I16	0.1	°
Voltage Angle L2	23352	I16	0.1	°
Voltage Angle L3	23353	I16	0.1	°
Current Angle L1	23357	I16	0.1	°
Current Angle L2	23358	I16	0.1	°
Current Angle L3	23359	I16	0.1	°
Power factor total	23360	I16	0.001
Power factor L1	23361	I16	0.001
Power factor L2	23362	I16	0.001
Power factor L3	23363	I16	0.001
Cosphi (displacement factor total)	23368	I16	0.001
Cosphi (displacement factor L1)	23369	I16	0.001
Cosphi (displacement factor L2)	23370	I16	0.001
Cosphi (displacement factor L3)	23371	I16	0.001
Average current L1	23508	U32BE	0.01	A
Average current L2	23510	U32BE	0.01	A
Average current L3	23512	U32BE	0.01	A
Average current neutral	23514	U32BE	0.01	A
Average voltage L1	23516	U32BE	0.1	V
Average voltage L2	23518	U32BE	0.1	V
Average voltage L3	23520	U32BE	0.1	V
Average voltage L1-L2	23522	U32BE	0.1	V
Average voltage L2-L3	23524	U32BE	0.1	V
Average voltage L1-L3	23526	U32BE	0.1	V
Average active power total	23528	I32BE	0.01	W
Average active power L1	23530	I32BE	0.01	W
Average active power L2	23532	I32BE	0.01	W
Average active power L3	23534	I32BE	0.01	W
Average reactive power total	23536	I32BE	0.01	VAR
Average reactive power L1	23538	I32BE	0.01	VAR
Average reactive power L2	23540	I32BE	0.01	VAR
Average reactive power L3	23542	I32BE	0.01	VAR
Average apparent power total	23544	I32BE	0.01	VA
Average apparent power L1	23546	I32BE	0.01	VA
Average apparent power L2	23548	I32BE	0.01	VA
Average apparent power L3	23550	I32BE	0.01	VA
Maximum current L1	23568	U32BE	0.01	A
Maximum current L2	23570	U32BE	0.01	A
Maximum current L3	23572	U32BE	0.01	A
Maximum current neutral	23574	U32BE	0.01	A
Maximum voltage L1	23576	U32BE	0.1	V
Maximum voltage L2	23578	U32BE	0.1	V
Maximum voltage L3	23580	U32BE	0.1	V
Maximum voltage L1-L2	23582	U32BE	0.1	V
Maximum voltage L2-L3	23584	U32BE	0.1	V
Maximum voltage L1-L3	23586	U32BE	0.1	V
Maximum active power total	23588	I32BE	0.01	W
Maximum active power L1	23590	I32BE	0.01	W
Maximum active power L2	23592	I32BE	0.01	W
Maximum active power L3	23594	I32BE	0.01	W
Maximum reactive power total	23596	I32BE	0.01	VAR
Maximum reactive power L1	23598	I32BE	0.01	VAR
Maximum reactive power L2	23600	I32BE	0.01	VAR
Maximum reactive power L3	23602	I32BE	0.01	VAR
Maximum apparent power total	23604	I32BE	0.01	VA
Maximum apparent power L1	23606	I32BE	0.01	VA
Maximum apparent power L2	23608	I32BE	0.01	VA
Maximum apparent power L3	23610	I32BE	0.01	VA
Maximum current L1 timestamp	23628	U32BE	1
Maximum current L2 timestamp	23630	U32BE	1
Maximum current L3 timestamp	23632	U32BE	1
Maximum current neutral timestamp	23634	U32BE	1
Maximum voltage L1 timestamp	23636	U32BE	1
Maximum voltage L2 timestamp	23638	U32BE	1
Maximum voltage L3 timestamp	23640	U32BE	1
Maximum voltage L1-L2 timestamp	23642	U32BE	1
Maximum voltage L2-L3 timestamp	23644	U32BE	1
Maximum voltage L1-L3 timestamp	23646	U32BE	1
Maximum active power total timestamp	23648	U32BE	1
Maximum active power L1 timestamp	23650	U32BE	1
Maximum active power L2 timestamp	23652	U32BE	1
Maximum active power L3 timestamp	23654	U32BE	1
Maximum reactive power total timestamp	23656	U32BE	1
Maximum reactive power L1 timestamp	23658	U32BE	1
Maximum reactive power L2 timestamp	23660	U32BE	1
Maximum reactive power L3 timestamp	23662	U32BE	1
Maximum apparent power total timestamp	23664	U32BE	1
Maximum apparent power L1 timestamp	23666	U32BE	1
Maximum apparent power L2 timestamp	23668	U32BE	1
Maximum apparent power L3 timestamp	23670	U32BE	1
Minimum current L1	23688	U32BE	0.01	A
Minimum current L2	23690	U32BE	0.01	A
Minimum current L3	23692	U32BE	0.01	A
Minimum current neutral	23694	U32BE	0.01	A
Minimum voltage L1	23696	U32BE	0.1	V
Minimum voltage L2	23698	U32BE	0.1	V
Minimum voltage L3	23700	U32BE	0.1	V
Minimum voltage L1-L2	23702	U32BE	0.1	V
Minimum voltage L2-L3	23704	U32BE	0.1	V
Minimum voltage L1-L3	23706	U32BE	0.1	V
Minimum active power total	23708	I32BE	0.01	W
Minimum active power L1	23710	I32BE	0.01	W
Minimum active power L2	23712	I32BE	0.01	W
Minimum active power L3	23714	I32BE	0.01	W
Minimum reactive power total	23716	I32BE	0.01	VAR
Minimum reactive power L1	23718	I32BE	0.01	VAR
Minimum reactive power L2	23720	I32BE	0.01	VAR
Minimum reactive power L3	23722	I32BE	0.01	VAR
Minimum apparent power total	23724	I32BE	0.01	VA
Minimum apparent power L1	23726	I32BE	0.01	VA
Minimum apparent power L2	23728	I32BE	0.01	VA
Minimum apparent power L3	23730	I32BE	0.01	VA
Minimum current L1 timestamp	23748	U32BE	1
Minimum current L2 timestamp	23750	U32BE	1
Minimum current L3 timestamp	23752	U32BE	1
Minimum current neutral timestamp	23754	U32BE	1
Minimum voltage L1 timestamp	23756	U32BE	1
Minimum voltage L2 timestamp	23758	U32BE	1
Minimum voltage L3 timestamp	23760	U32BE	1
Minimum voltage L1-L2 timestamp	23762	U32BE	1
Minimum voltage L2-L3 timestamp	23764	U32BE	1
Minimum voltage L1-L3 timestamp	23766	U32BE	1
Minimum active power total timestamp	23768	U32BE	1
Minimum active power L1 timestamp	23770	U32BE	1
Minimum active power L2 timestamp	23772	U32BE	1
Minimum active power L3 timestamp	23774	U32BE	1
Minimum reactive power total timestamp	23776	U32BE	1
Minimum reactive power L1 timestamp	23778	U32BE	1
Minimum reactive power L2 timestamp	23780	U32BE	1
Minimum reactive power L3 timestamp	23782	U32BE	1
Minimum apparent power total timestamp	23784	U32BE	1
Minimum apparent power L1 timestamp	23786	U32BE	1
Minimum apparent power L2 timestamp	23788	U32BE	1
Minimum apparent power L3 timestamp	23790	U32BE	1
Phase Voltage harmonics L1 (THD)	23808	U16	0.1	%
Phase Voltage harmonics L1 (2nd,3rd…40th)	23809	U16	0.1	%
Phase Voltage harmonics L2 (THD)	23936	U16	0.1	%
Phase Voltage harmonics L2 (2nd,3rd…40th)	23937	U16	0.1	%
Phase Voltage harmonics L3 (THD)	24064	U16	0.1	%
Phase Voltage harmonics L3 (2nd,3rd…40th)	24065	U16	0.1	%
Current harmonics L1 (THD)	24576	U16	0.1	%
Current harmonics L1 (2nd,3rd…40th)	24577	U16	0.1	%
Current harmonics L2 (THD)	24704	U16	0.1	%
Current harmonics L2 (2nd,3rd…40th)	24705	U16	0.1	%
Current harmonics L3 (THD)	24832	U16	0.1	%
Current harmonics L3 (2nd,3rd…40th)	24833	U16	0.1	%
Unbalances Phase voltage	25088	U32BE	0.1	%
Unbalances Line voltage	25090	U32BE	0.1	%
Unbalances Current	25092	U32BE	0.1	%
Digital Output 1 Status	25344	U16	1
Digital Output 2 Status	25345	U16	1
Digital Input 1&2 Status	25352	U32BE	1
Digital Input 3&4 Status	25354	U32BE	1
Digital Input 3&4 pulse counter	25360	U16	1
Digital Input 1&2 pulse counter	25368	U16	1
Serial number(s)	35072	U16	1
Meter firmware version	35080	U16	1
Product type number ID	35088	U16	1
Linear Slave ID	35089	U16	1
Product tag name	35097	U16	1
Type designation	35168	U16	1
Product Name	35174	U16	1
Date Time	35328	U16	1
Current active tariff (None, 1~4)	35335	U16	1
Tariffs source, 0=RTC, 1=Communication, 2=DI, 0xFF=Disable	35984	U16	1
Input configuration, fixed 0x04E4	35985	U16	1
Weekday type - Monday, 0=weekday, 1=weekend	35986	U16	1
Weekday type - Tuesday, 0=weekday, 1=weekend	35987	U16	1
Weekday type - Wednesday, 0=weekday, 1=weekend	35988	U16	1
Weekday type - Thursday, 0=weekday, 1=weekend	35989	U16	1
Weekday type - Friday, 0=weekday, 1=weekend	35990	U16	1
Weekday type - Saturday, 0=weekday, 1=weekend	35991	U16	1
Weekday type - Sunday, 0=weekday, 1=weekend	35992	U16	1
Weekday Start time - T1, 0xHHMM, 0xFFFF: Disable	35993	U16	1
Weekday Start time - T2, 0xHHMM	35994	U16	1
Weekday Start time - T3, 0xHHMM	35995	U16	1
Weekday Start time - T4, 0xHHMM	35996	U16	1
Weekend Start time - T1, 0xHHMM, 0xFFFF: Disable	36001	U16	1
Weekend Start time - T2, 0xHHMM	36002	U16	1
Weekend Start time - T3, 0xHHMM	36003	U16	1
Weekend Start time - T4, 0xHHMM	36004	U16	1
Special day Start time - T1, 0xHHMM, 0xFFFF: Disable	36009	U16	1
Special day Start time - T2, 0xHHMM	36010	U16	1
Special day Start time - T3, 0xHHMM	36011	U16	1
Special day Start time - T4, 0xHHMM	36012	U16	1
Special day - Total number, 1~50	36051	U16	1
Special day - Current special day number, 1~Total number	36052	U16	1
Special day - Entry Date, 0xYYMMDDxx (xx fixed FF)	36053	U32BE	1
Special day - Entry ID, 1~Total number	36055	U16	1
Wires	36069	U16	1
DST Start Date time, 0xYYMMDDHH	36070	U32BE	1
DST End Date time, 0xYYMMDDHH	36072	U32BE	1
DST Enable, 0=Disable, 1=Enable	36074	U16	1
Address, 1~247	36075	U16	1
Baudrate,9600~115200	36076	U32BE	1
Parity	36078	U16	1
DHCP, 0=disable, 1=enable	36079	U16	1
IP, A.B.C.D=0xAABBCCDD	36080	U32BE	1
Mask, A.B.C.D=0xAABBCCDD	36082	U32BE	1
Gateway, A.B.C.D=0xAABBCCDD	36084	U32BE	1
Timer up counter	36087	U32BE	0.1	hour
Timer down counter	36089	U32BE	0.1	hour
CT primary	35840	U32BE	1
CT secondary	35842	U32BE	1
VT primary	35844	U32BE	1
VT secondary	35846	U32BE	1
Average Active power total Scaler 1	51994	I32BE	1	W
Average Active power L1 Scaler 1	51996	I32BE	1	W
Average Active power L2 Scaler 1	51998	I32BE	1	W
Average Active power L3 Scaler 1	52000	I32BE	1	W
Average Reactive power total Scaler 1	52002	I32BE	1	VAR
Average Reactive power L1 Scaler 1	52004	I32BE	1	VAR
Average Reactive power L2 Scaler 1	52006	I32BE	1	VAR
Average Reactive power L3 Scaler 1	52008	I32BE	1	VAR
Average Apparent power total Scaler 1	52010	I32BE	1	VA
Average Apparent power L1 Scaler 1	52012	I32BE	1	VA
Average Apparent power L2 Scaler 1	52014	I32BE	1	VA
Average Apparent power L3 Scaler 1	52016	I32BE	1	VA
Max Active power total Scaler 1	52200	I32BE	1	W
Max Active power L1 Scaler 1	52202	I32BE	1	W
Max Active power L2 Scaler 1	52204	I32BE	1	W
Max Active power L3 Scaler 1	52206	I32BE	1	W
Max Reactive power total Scaler 1	52208	I32BE	1	VAR
Max Reactive power L1 Scaler 1	52210	I32BE	1	VAR
Max Reactive power L2 Scaler 1	52212	I32BE	1	VAR
Max Reactive power L3 Scaler 1	52214	I32BE	1	VAR
Max Apparent power total Scaler 1	52216	I32BE	1	VA
Max Apparent power L1 Scaler 1	52218	I32BE	1	VA
Max Apparent power L2 Scaler 1	52220	I32BE	1	VA
Max Apparent power L3 Scaler 1	52222	I32BE	1	VA
Min Active power total Scaler 1	52260	I32BE	1	W
Min Active power L1 Scaler 1	52262	I32BE	1	W
Min Active power L2 Scaler 1	52264	I32BE	1	W
Min Active power L3 Scaler 1	52266	I32BE	1	W
Min Reactive power total Scaler 1	52268	I32BE	1	VAR
Min Reactive power L1 Scaler 1	52270	I32BE	1	VAR
Min Reactive power L2 Scaler 1	52272	I32BE	1	VAR
Min Reactive power L3 Scaler 1	52274	I32BE	1	VAR
Min Apparent power total Scaler 1	52276	I32BE	1	VA
Min Apparent power L1 Scaler 1	52278	I32BE	1	VA
Min Apparent power L2 Scaler 1	52280	I32BE	1	VA
Min Apparent power L3 Scaler 1	52282	I32BE	1	VA
Average Active power total Scaler 1	52380	I32BE	1	W
Average Active power L1 Scaler 1	52382	I32BE	1	W
Average Active power L2 Scaler 1	52384	I32BE	1	W
Average Active power L3 Scaler 1	52386	I32BE	1	W
Average Reactive power total Scaler 1	52388	I32BE	1	VAR
Average Reactive power L1 Scaler 1	52390	I32BE	1	VAR
Average Reactive power L2 Scaler 1	52392	I32BE	1	VAR
Average Reactive power L3 Scaler 1	52394	I32BE	1	VAR
Average Apparent power total Scaler 1	52396	I32BE	1	VA
Average Apparent power L1 Scaler 1	52398	I32BE	1	VA
Average Apparent power L2 Scaler 1	52400	I32BE	1	VA
Average Apparent power L3 Scaler 1	52402	I32BE	1	VA

link settings as documented (unverified): RTU/TCP; baud 9600/19200/38400/57600/115200; FC 03,16

bench facts as documented (unverified)

terminals	3-pole plug contact
A/B polarity	polarity dependent
termination	120 Ohm resistors at both ends of the line
connector	3-pole plug contact, RJ45
shield/ground	shield should be connected to ground in one end
max registers/read	125
broadcast	supported
protocol notes	When using function code 16 (10H), all registers of the same function must be written consecutively.
model register	8966
serial register	8900
firmware register	8908
doc revision	9AKK108467A2704 [1.3]

field reports — community-sourced, unverified (checked 2026-06-11)

When reading multi-register values (such as 64-bit energy values spanning 4 registers), the registers must be read together in a single request. Attempting to read them one by one or partially will result in incorrect data (e.g., returning 0 or 25565) or an Illegal Data Value exception. [source]
confirmed: comms defaults (baud rates 9600 to 115200, Modbus RTU/TCP, function codes 3 and 16) — confirmed by ABB M1M 20 User Manual and M1M Modbus Communication Manual
confirmed: identification registers (serial @ 8900, firmware @ 8908, model/product name @ 8966) — confirmed by ABB M1M 30 Modbus Register Map and M1M Modbus map V1.2
confirmed: physical properties (3-pole terminal for RTU, RJ45 for TCP, polarity dependent, 120 Ohm termination, shield grounded at one end) — confirmed by ABB M1M 20 User Manual and M1M Modbus Communication Manual
confirmed: quirks (broadcast supported, max read registers 125, consecutive write requirement for FC16) — confirmed by ABB M1M Modbus Communication Manual (9AKK108467A2704)

The trust ladder

Each rung states what it proved and what it did not. Gray until proven; green is earned by hardware only.

generated — A prompt produced it. Unproven — anyone can regenerate this.
structure-verified — Decode path is structurally sound (addresses, widths, finite values). Does NOT prove word order or scaling.
coherence-checked — Round-trips through a real Modbus stack with no overlapping addresses and a word-order-sensitive codec — the map is internally coherent and wire-decodable. Does NOT prove byte-order or scaling match a real device: the emulator is seeded from the map's own types, so a uniformly wrong byte-order still round-trips. Only hardware-verified confirms byte-order/scale on the wire.
hardware-verified (software-key) x1 — Matched a real device with operator-attested readings as ground truth — the only rung that confirms word order + scaling on the wire.

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