MBMap Registry
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  2. ABB
  3. M2M / DMTME

ABB M2M / DMTME Modbus register map

Also covers M2M MODBUS, M2M ALARM, M2M I/O, DMTME-I-485

Three-phase panel multimeters (M2M with RS485, DMTME-I-485), Modbus RTU

  • Official
  • 88 registers
  • Modbus 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.

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Communication

Protocol
Modbus RTU
Unit ID
1
Serial
9600 8E1 · 9600 baud, 8 data bits, even parity, 1 stop bit defaults
Byte / word order
ABCD · bytes big-endian, words high first
Addresses
0-based
Max read
48 registers per request

Connection values are defaults: the device may be configured differently.

Map

Registers
88 holding registers
Groups
11
Translation tables
1
Revision
2 · 2026-10-17
Added
()
File
maps/abb/m2m-dmtme.mbmap.json · 19 KB · history
SHA-256
a8705d825b99c6e3418258e6fc91e90d68c97ca93a3bb69891f36a0ea82f8e71
Manufacturer
abb.com

Sources and notes

Source: ABB, "M2M/DMTME Instruments - Communication protocol", technical specification V2.0, 2CSG445011D0201; https://library.abb.com/d/2CSG445011D0201

  • ABB M2M (MODBUS, ALARM and I/O models) and DMTME-I-485 multimeters over RS485.
  • Every value is a 32-bit long (2 registers, high word first); reads and writes use FC03 and FC16. Up to 24 values (48 registers) per read.
  • Registers marked M2M only read as 0 on the DMTME. Active and reactive powers are unsigned on the DMTME.
  • A power factor or cos phi of 2.000 (raw 2000) means not available, e.g. with no current.
  • The instrument type and firmware are only given by FC11 Report slave ID: 80 = DMTME-I-485, 57 = M2M MODBUS, 58 = M2M ALARM, 59 = M2M I/O.
  • Serial settings: 8 data bits, parity even, odd or none, 2400-19200 baud (DMTME) or 4800-19200 baud (M2M). Set the address on the instrument.
AreaAddressNameTypeAccessUnitScaleDescription
HR 4096 uint32 ABCD R V
HR 4098 uint32 ABCD R V
HR 4100 uint32 ABCD R V
HR 4102 uint32 ABCD R V
HR 4104 uint32 ABCD R V
HR 4106 uint32 ABCD R V
HR 4108 uint32 ABCD R V
HR 4110 uint32 ABCD R A ×0.001
HR 4112 uint32 ABCD R A ×0.001
HR 4114 uint32 ABCD R A ×0.001
HR 4116 uint32 ABCD R A ×0.001
HR 4118 int32 ABCD R ×0.001
HR 4120 int32 ABCD R ×0.001
HR 4122 int32 ABCD R ×0.001
HR 4124 int32 ABCD R ×0.001
HR 4126 int32 ABCD R ×0.001
HR 4128 int32 ABCD R ×0.001
HR 4130 int32 ABCD R ×0.001
HR 4132 int32 ABCD R ×0.001
HR 4134 uint32 ABCD R VA
HR 4136 uint32 ABCD R VA
HR 4138 uint32 ABCD R VA
HR 4140 uint32 ABCD R VA
HR 4142 int32 ABCD R W Signed on the M2M, unsigned on the DMTME
HR 4144 int32 ABCD R W Signed on the M2M, unsigned on the DMTME
HR 4146 int32 ABCD R W Signed on the M2M, unsigned on the DMTME
HR 4148 int32 ABCD R W Signed on the M2M, unsigned on the DMTME
HR 4150 int32 ABCD R var Signed on the M2M, unsigned on the DMTME
HR 4152 int32 ABCD R var Signed on the M2M, unsigned on the DMTME
HR 4154 int32 ABCD R var Signed on the M2M, unsigned on the DMTME
HR 4156 int32 ABCD R var Signed on the M2M, unsigned on the DMTME
HR 4158 uint32 ABCD R Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4160 uint32 ABCD R Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4166 uint32 ABCD R Hz ×0.001
HR 4192 uint32 ABCD R A ×0.001
HR 4194 uint32 ABCD R A ×0.001
HR 4196 uint32 ABCD R A ×0.001
HR 4198 int32 ABCD R W Signed on the M2M, unsigned on the DMTME
HR 4200 uint32 ABCD R VA
HR 4208 int32 ABCD R W Signed on the M2M, unsigned on the DMTME
HR 4210 uint32 ABCD R VA M2M only
HR 4212 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4214 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4216 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4218 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4220 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4222 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4224 int32 ABCD R W M2M only
HR 4226 uint32 ABCD R % ×0.01 M2M only; 0 when not defined
HR 4228 uint32 ABCD R % ×0.01 M2M only; 0 when not defined
HR 4230 uint32 ABCD R % ×0.01 M2M only; 0 when not defined
HR 4232 uint32 ABCD R % ×0.01 M2M only; 0 when not defined
HR 4234 uint32 ABCD R % ×0.01 M2M only; 0 when not defined
HR 4236 uint32 ABCD R % ×0.01 M2M only; 0 when not defined
HR 4238 int32 ABCD R W M2M only
HR 4240 int32 ABCD R W M2M only
HR 4242 int32 ABCD R W M2M only
HR 4244 uint32 ABCD R VA M2M only
HR 4246 uint32 ABCD R VA M2M only
HR 4248 uint32 ABCD R VA M2M only
HR 4250 uint32 ABCD R VA M2M only
HR 4252 uint32 ABCD R W M2M I/O only
HR 4254 uint32 ABCD R var M2M I/O only
HR 4256 uint32 ABCD R M2M I/O only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4258 uint32 ABCD R M2M I/O only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4260 uint32 ABCD R A ×0.001 M2M only
HR 4262 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4264 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4266 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4268 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4270 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4272 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4274 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4276 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4278 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4280 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4282 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4284 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4286 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4288 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4290 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4292 uint32 ABCD R M2M only; Unit printed as "Wh * 100" (varh, VAh): either 100 Wh or 0.01 Wh steps; check against the display
HR 4512 uint32 ABCD RW 1-1250 on the DMTME, 1-2000 on the M2M; on the M2M writing sets the CT to (ratio × 5 A)/5 A
HR 4514 uint32 ABCD RW 1-500 on the DMTME, 1-600 on the M2M; on the M2M writing sets the VT to (ratio × 100 V)/100 V
HR 4516 uint32 ABCD RW
HR 4528 uint32 ABCD W Write the register address followed by 55AAh
HR 4530 uint32 ABCD W Write the register address followed by 55AAh
HR 4532 uint32 ABCD W Write the register address followed by 55AAh

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