Lovato DMG700 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
L1 Phase Voltage	1	U32BE	0.01	V
L2 Phase Voltage	3	U32BE	0.01	V
L3 Phase Voltage	5	U32BE	0.01	V
L1 Current	7	U32BE	0.0001	A
L2 Current	9	U32BE	0.0001	A
L3 Current	11	U32BE	0.0001	A
L1-L2 Voltage	13	U32BE	0.01	V
L2-L3 Voltage	15	U32BE	0.01	V
L3-L1 Voltage	17	U32BE	0.01	V
L1 Active Power	19	I32BE	0.01	W
L2 Active Power	21	I32BE	0.01	W
L3 Active Power	23	I32BE	0.01	W
L1 Reactive Power	25	I32BE	0.01	Var
L2 Reactive Power	27	I32BE	0.01	Var
L3 Reactive Power	29	I32BE	0.01	Var
L1 Apparent Power	31	U32BE	0.01	VA
L2 Apparent Power	33	U32BE	0.01	VA
L3 Apparent Power	35	U32BE	0.01	VA
L1 Power Factor	37	I32BE	0.0001
L2 Power Factor	39	I32BE	0.0001
L3 Power Factor	41	I32BE	0.0001
L1 CosPhi	43	I32BE	0.0001
L2 CosPhi	45	I32BE	0.0001
L3 CosPhi	47	I32BE	0.0001
Frequency	49	U32BE	0.001	Hz
Eqv. Phase Voltage	51	U32BE	0.01	V
Eqv. Phase-To-Phase Voltage	53	U32BE	0.01	V
Eqv. Current	55	U32BE	0.0001	A
Eqv. Active Power	57	I32BE	0.01	W
Eqv. Reactive Power	59	I32BE	0.01	Var
Eqv. Apparent Power	61	U32BE	0.01	VA
Eqv Power Factor	63	I32BE	0.0001
Phase-Phase Voltage Asymmetriy	65	U32BE	0.01	%
Phase-Neural Voltage Asymmetriy	67	U32BE	0.01	%
L1 Voltage Thd	83	U32BE	0.01	%
L1 Current Thd	89	U32BE	0.01	%
Neutral-Earth Voltage	105	U32BE	0.01	V
Neutral Current	107	U32BE	0.0001	A
KW L1-2	111	U32BE	0.01	W
L1 Phase Voltage (HI)	1023	U32BE	0.01	V
L1 Phase Voltage (LO)	1535	U32BE	0.01	V
L1 Phase Voltage (AV)	2047	U32BE	0.01	V
L1 Phase Voltage (MD)	2559	U32BE	0.01	V
2. Harmonic L1 Voltage	3071	U32BE	0.1	%
Analog Input 1	3919	U32BE	0.01
Analog Output 1	3935	U32BE	0.001
DIPS COUNTER	6143	U32BE	1
Total imp. Active Energy	6687	U32BE	0.01	kWh
Total exported Active Energy	6689	U32BE	0.01	kWh
Total imp. Reactive Energy	6691	U32BE	0.01	kvarh
Total exp. Reactive Energy	6693	U32BE	0.01	kvarh
Total Apparent Energy	6695	U32BE	0.01	kVAh
Partial imp. Active Energy	6697	U32BE	0.01	kWh
Partial exp. Active Energy	6699	U32BE	0.01	kWh
Total imp. Active Energy (4 words)	6943	U64BE	0.01	kWh
Total exported Active Energy (4 words)	6947	U64BE	0.01	kWh
Total imp. Reactive Energy (4 words)	6951	U64BE	0.01	kvarh
Total exp. Reactive Energy (4 words)	6955	U64BE	0.01	kvarh
Total Apparent Energy (4 words)	6959	U64BE	0.01	kVAh
Counter 1	7423	U32BE	1	Nr
Total Hour meter	7679	U32BE	1	s
Partial Hour meter	7681	U32BE	1	s
Phase sequence	8307	U16	1
OR of all Inputs	8447	U16	1
Input 1	8448	U16	1
OR of all Outputs	8463	U16	1
Output 1	8464	U16	1
EVENTS POINTER	8655	U16	1
EVENTS COUNTER	8656	U16	1
STOP/START LOGGER	8690	U16	1
RESET FLASH	8691	U16	1
RTC Year	10479	U16	1
RTC Month	10480	U16	1
RTC Day	10481	U16	1
RTC Hour	10482	U16	1
RTC Minutes	10483	U16	1
RTC Seconds	10484	U16	1
System reboot / Save to flash memory	12032	U16	1
Command Register	12271	U16	1
2. Harmonic L1 Voltage	12543	U16	0.1	%
ACTUAL WEEK ENERGY QUALITY	13279	U16	0.1	%
CT primary (DMG300/700/800/900) / Menu number selection (DMG110/6xx)	20479	U16	1
Submenu number selection (DMG110/6xx)	20480	U16	1
CT secondary (DMG300/700/800/900) / Parameter number selection (DMG110/6xx)	20481	U16	1
Rated voltage (DMG300/700/800/900) / Parameter value (DMG110/6xx)	20483	U32BE	1	V
Language	20607	U16	1
Enable passwords	20735	U16	1
Integration mode	20863	U16	1
Hour counters enable	20991	U16	1
Trend graph measure	21119	U16	1

link settings as documented (unverified): RTU/ASCII/TCP; default 9600 8N1; unit ID 1; FC 03,04,06,07,16,17,23; Supports Modbus RTU and ASCII on RS-485, and Modbus TCP on expansion modules.

bench facts as documented (unverified)

max registers/read	80
identification notes	Function 17 (Report Slave ID) returns device type (e.g., AAh for DMG700), software revision, hardware revision, and parameter revision.
FC 43 device ID	not supported
doc revision	Doc. I317IGB02_22.doc

⚠ disputed: total_imported_active_energy @ 6688 — disputed by Lovato Modbus Protocol document I317 I GB 02_22 which lists Total Imported Active Energy at address 1A20H (6688 in decimal) but the actual register address is 1A20H (6688 decimal) while the document lists 6944 decimal in some third-party software maps. However, 1A20H is exactly 6688 decimal, so the address is correct but the other energy registers are offset: total_exported_active_energy is at 1A22H (6690 decimal), total_imported_reactive_energy is at 1A24H (6692 decimal), total_exported_reactive_energy is at 1A26H (6694 decimal), and total_apparent_energy is at 1A28H (6696 decimal).

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

confirmed: Doc. I317IGB02_22.doc — confirmed by Lovato Modbus Protocol document I317 I GB 02_22
confirmed: Function 17 (Report Slave ID) returns AAh for DMG700 — confirmed by Lovato Modbus Protocol document I317 I GB 02_22
confirmed: Max read registers is 80 — confirmed by Lovato Modbus Protocol document I317 I GB 02_22
confirmed: Baud rates [1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200] — confirmed by Lovato Modbus Protocol document I317 I GB 02_22
confirmed: Default baud rate is 9600 — confirmed by Lovato Modbus Protocol document I317 I GB 02_22
confirmed: Default unit ID is 1 — confirmed by Lovato Modbus Protocol document I317 I GB 02_22
confirmed: l1_phase_voltage @ 2, l2_phase_voltage @ 4, l3_phase_voltage @ 6, l1_current @ 8, l2_current @ 10, l3_current @ 12 — confirmed by AGG Software Lovato Modbus Register Map and Lovato Modbus Protocol document I317 I GB 02_22

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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