Lovato Electric DMG300 Modbus register map
Also covers DMG 300
Lovato DMG300 digital multimeter/power analyser; Modbus RTU, ASCII or TCP through its communication port or expansion modules
- Official
- 91 registers
- Modbus TCP and RTU
- Revision 2 · 2026-10-17
Official: Written from the manufacturer's documentation, but not tested on a device yet. Check the map against the manufacturer's documentation before you write to a live device. Tested it? Report a test.
Communication
- Protocol
- Modbus TCP and RTU
- Unit ID
- 1
- TCP port
- 502default
- Serial
- 9600 8N1 · 9600 baud, 8 data bits, none parity, 1 stop bit
- Byte / word order
- ABCD · bytes big-endian, words high first
- Addresses
- 1-based · wire address = address − 1
Connection values are defaults: the device may be configured differently.
Map
- Registers
- 91 input registers
- Groups
- 4
- Revision
- 2 · 2026-10-17
- Added
- ()
- File
- maps/lovato-electric/dmg300.mbmap.json · 16 KB · history
- SHA-256
- 412021c89a0b00f2e84afed2a798bf87f097969a9154802cefbd62626a1d441d
- Manufacturer
- lovatoelectric.com
Sources and notes
- Digital multimeters-analyzers DMG series, Communication protocol Modbus · version I317IGB02_22 measure tables (table 2 onwards); rows marked for this model
Source: Lovato Electric, "DMG series Modbus communication protocol", I317IGB02_22
- Addresses are the table addresses of the protocol, which are 1-based: the query uses the table address minus one.
- Measurements are read with FC04; 32-bit values are high word first.
- Not in this map: the maximum, minimum and average blocks (0x0400-0x0A62), commands (0x2FF0), event log, setup parameters and waveforms.
| Area | Address | Name | Type | Access | Unit | Scale | Description |
|---|---|---|---|---|---|---|---|
| IR | 2 | uint32 ABCD | R | V | ×0.01 | ||
| IR | 4 | uint32 ABCD | R | V | ×0.01 | ||
| IR | 6 | uint32 ABCD | R | V | ×0.01 | ||
| IR | 8 | uint32 ABCD | R | A | ×0.0001 | ||
| IR | 10 | uint32 ABCD | R | A | ×0.0001 | ||
| IR | 12 | uint32 ABCD | R | A | ×0.0001 | ||
| IR | 14 | uint32 ABCD | R | V | ×0.01 | ||
| IR | 16 | uint32 ABCD | R | V | ×0.01 | ||
| IR | 18 | uint32 ABCD | R | V | ×0.01 | ||
| IR | 20 | int32 ABCD | R | W | ×0.01 | Power scale may change with the device setting (see protocol note on power measurements) | |
| IR | 22 | int32 ABCD | R | W | ×0.01 | Power scale may change with the device setting (see protocol note on power measurements) | |
| IR | 24 | int32 ABCD | R | W | ×0.01 | Power scale may change with the device setting (see protocol note on power measurements) | |
| IR | 26 | int32 ABCD | R | var | ×0.01 | Power scale may change with the device setting (see protocol note on power measurements) | |
| IR | 28 | int32 ABCD | R | var | ×0.01 | Power scale may change with the device setting (see protocol note on power measurements) | |
| IR | 30 | int32 ABCD | R | var | ×0.01 | Power scale may change with the device setting (see protocol note on power measurements) | |
| IR | 32 | uint32 ABCD | R | VA | ×0.01 | Power scale may change with the device setting (see protocol note on power measurements) | |
| IR | 34 | uint32 ABCD | R | VA | ×0.01 | Power scale may change with the device setting (see protocol note on power measurements) | |
| IR | 36 | uint32 ABCD | R | VA | ×0.01 | Power scale may change with the device setting (see protocol note on power measurements) | |
| IR | 38 | int32 ABCD | R | ×0.0001 | |||
| IR | 40 | int32 ABCD | R | ×0.0001 | |||
| IR | 42 | int32 ABCD | R | ×0.0001 | |||
| IR | 50 | uint32 ABCD | R | Hz | ×0.001 | ||
| IR | 52 | uint32 ABCD | R | V | ×0.01 | ||
| IR | 54 | uint32 ABCD | R | V | ×0.01 | ||
| IR | 56 | uint32 ABCD | R | A | ×0.0001 | ||
| IR | 58 | int32 ABCD | R | W | ×0.01 | ||
| IR | 60 | int32 ABCD | R | var | ×0.01 | ||
| IR | 62 | uint32 ABCD | R | VA | ×0.01 | ||
| IR | 64 | int32 ABCD | R | ×0.0001 | |||
| IR | 66 | uint32 ABCD | R | % | ×0.01 | ||
| IR | 68 | uint32 ABCD | R | % | ×0.01 | ||
| IR | 70 | uint32 ABCD | R | % | ×0.01 | ||
| IR | 72 | uint32 ABCD | R | A | ×0.0001 | ||
| IR | 84 | uint32 ABCD | R | % | ×0.01 | ||
| IR | 86 | uint32 ABCD | R | % | ×0.01 | ||
| IR | 88 | uint32 ABCD | R | % | ×0.01 | ||
| IR | 90 | uint32 ABCD | R | % | ×0.01 | ||
| IR | 92 | uint32 ABCD | R | % | ×0.01 | ||
| IR | 94 | uint32 ABCD | R | % | ×0.01 | ||
| IR | 96 | uint32 ABCD | R | % | ×0.01 | ||
| IR | 98 | uint32 ABCD | R | % | ×0.01 | ||
| IR | 100 | uint32 ABCD | R | % | ×0.01 | ||
| IR | 6688 | uint32 ABCD | R | kWh | ×0.01 | ||
| IR | 6690 | uint32 ABCD | R | kWh | ×0.01 | ||
| IR | 6692 | uint32 ABCD | R | kvarh | ×0.01 | ||
| IR | 6694 | uint32 ABCD | R | kvarh | ×0.01 | ||
| IR | 6696 | uint32 ABCD | R | kVAh | ×0.01 | ||
| IR | 6698 | uint32 ABCD | R | kWh | ×0.01 | ||
| IR | 6700 | uint32 ABCD | R | kWh | ×0.01 | ||
| IR | 6702 | uint32 ABCD | R | kvarh | ×0.01 | ||
| IR | 6704 | uint32 ABCD | R | kvarh | ×0.01 | ||
| IR | 6706 | uint32 ABCD | R | kVAh | ×0.01 | ||
| IR | 6944 | uint64 ABCD | R | kWh | ×0.01 | ||
| IR | 6948 | uint64 ABCD | R | kWh | ×0.01 | ||
| IR | 6952 | uint64 ABCD | R | kvarh | ×0.01 | ||
| IR | 6956 | uint64 ABCD | R | kvarh | ×0.01 | ||
| IR | 6960 | uint64 ABCD | R | kVAh | ×0.01 | ||
| IR | 6964 | uint64 ABCD | R | kWh | ×0.01 | ||
| IR | 6968 | uint64 ABCD | R | kWh | ×0.01 | ||
| IR | 6972 | uint64 ABCD | R | kvarh | ×0.01 | ||
| IR | 6976 | uint64 ABCD | R | kvarh | ×0.01 | ||
| IR | 6980 | uint64 ABCD | R | kVAh | ×0.01 | ||
| IR | 6984 | uint64 ABCD | R | kWh | ×0.01 | ||
| IR | 6988 | uint64 ABCD | R | kWh | ×0.01 | ||
| IR | 6992 | uint64 ABCD | R | kvarh | ×0.01 | ||
| IR | 6996 | uint64 ABCD | R | kvarh | ×0.01 | ||
| IR | 7000 | uint64 ABCD | R | kVAh | ×0.01 | ||
| IR | 7004 | uint64 ABCD | R | kWh | ×0.01 | ||
| IR | 7020 | uint64 ABCD | R | kVAh | ×0.01 | ||
| IR | 7024 | uint64 ABCD | R | kWh | ×0.01 | ||
| IR | 7040 | uint64 ABCD | R | kVAh | ×0.01 | ||
| IR | 7044 | uint64 ABCD | R | kWh | ×0.01 | ||
| IR | 7060 | uint64 ABCD | R | kVAh | ×0.01 | ||
| IR | 7424 | uint32 ABCD | R | ||||
| IR | 7426 | uint32 ABCD | R | ||||
| IR | 7428 | uint32 ABCD | R | ||||
| IR | 7430 | uint32 ABCD | R | ||||
| IR | 7680 | uint32 ABCD | R | s | |||
| IR | 7682 | uint32 ABCD | R | s | |||
| IR | 8449 | uint16 | R | ||||
| IR | 8456 | uint16 | R | ||||
| IR | 8465 | uint16 | R | ||||
| IR | 8472 | uint16 | R | ||||
| IR | 8481 | uint16 | R | ||||
| IR | 8488 | uint16 | R | ||||
| IR | 8497 | uint16 | R | ||||
| IR | 8504 | uint16 | R | ||||
| IR | 8513 | uint16 | R | ||||
| IR | 328 | uint16 | R | ||||
| IR | 20224 | uint16 | R | ||||
| IR | 20231 | uint16 | R |
No registers match
Try part of the name, an address (decimal or 0x hex) or clear the filters.
Help improve this map
- I tested it on a deviceReport whether it worked, even if you did not write the map.
- Suggest a correctionEdit the file on GitHub; it opens a pull request.
- Report a problemA wrong address, type, scale or byte order.
- Read the formatWhat each key of the file means (SPEC.md).