Eastron SDM630-Modbus V2 Modbus register map
DIN rail three phase energy meter for 3P4W, 3P3W and 1P2W systems with an RS485 Modbus RTU port. It reports voltage, current, power, power factor, frequency, harmonic distortion and import and export energy counters.
- Protocol
- Modbus RTU
- Defaults
- Per the protocol document: node address 1, 9600 baud, 8 data bits, no parity and one stop bit. Address range 1 to 247.
- Addresses in the manual
- Modicon style numbers (for example 40001 is holding register 0)
- 32 and 64-bit values
- High word first (AB CD)
- Registers listed
- 81
- Checked against
- Eastron SDM630Modbus Smart Meter Modbus Protocol Implementation V1.8
Address base. The register tables print 5-digit Modicon style numbers (3xxxx for input, 4xxxx for holding) and also give the hex start address used on the wire, for example 30001 is wire address 0x0000 and 40003 is 0x0002 (pp. 2-7 of the PDF). The two 6-digit holding numbers (461457, 464513) map to wire 0xF010 and 0xFC00. For example 30001 in the manual (Phase 1 line to neutral voltage) is address 0 on the wire.
Word order. Each value is a 32-bit IEEE 754 float in two registers, most significant register first by default (p. 1). The manual describes a Register Order setting that switches this by writing 2141.0 into it, but the table I read does not list its address.
Modbus Poll and the Modbus protocol itself count from 0. The "Wire address" column is the number to type into Modbus Poll.
Downloads
The register table has every column on this page. The blocks file imports into Modbus Poll. The template JSON holds the same blocks plus unit, scale and access for scripts.
Registers
81 registers
| Manual | Wire | Register | Type | Regs | Unit | Scale | Access | Area |
|---|---|---|---|---|---|---|---|---|
| 30001 | 0 | Phase 1 line to neutral voltageVoltage_L1N |
float32 | 2 | V | 1 | R | Input (FC04) |
| 30003 | 2 | Phase 2 line to neutral voltageVoltage_L2N |
float32 | 2 | V | 1 | R | Input (FC04) |
| 30005 | 4 | Phase 3 line to neutral voltageVoltage_L3N |
float32 | 2 | V | 1 | R | Input (FC04) |
| 30007 | 6 | Phase 1 currentCurrent_L1 |
float32 | 2 | A | 1 | R | Input (FC04) |
| 30009 | 8 | Phase 2 currentCurrent_L2 |
float32 | 2 | A | 1 | R | Input (FC04) |
| 30011 | 10 | Phase 3 currentCurrent_L3 |
float32 | 2 | A | 1 | R | Input (FC04) |
| 30013 | 12 | Phase 1 active powerActivePower_L1 |
float32 | 2 | W | 1 | R | Input (FC04) |
| 30015 | 14 | Phase 2 active powerActivePower_L2 |
float32 | 2 | W | 1 | R | Input (FC04) |
| 30017 | 16 | Phase 3 active powerActivePower_L3 |
float32 | 2 | W | 1 | R | Input (FC04) |
| 30019 | 18 | Phase 1 apparent powerApparentPower_L1 |
float32 | 2 | VA | 1 | R | Input (FC04) |
| 30021 | 20 | Phase 2 apparent powerApparentPower_L2 |
float32 | 2 | VA | 1 | R | Input (FC04) |
| 30023 | 22 | Phase 3 apparent powerApparentPower_L3 |
float32 | 2 | VA | 1 | R | Input (FC04) |
| 30025 | 24 | Phase 1 reactive powerReactivePower_L1 |
float32 | 2 | VAr | 1 | R | Input (FC04) |
| 30027 | 26 | Phase 2 reactive powerReactivePower_L2 |
float32 | 2 | VAr | 1 | R | Input (FC04) |
| 30029 | 28 | Phase 3 reactive powerReactivePower_L3 |
float32 | 2 | VAr | 1 | R | Input (FC04) |
| 30031 | 30 | Phase 1 power factorPowerFactor_L1 · Sign shows current direction: positive for forward current, negative for reverse (manual note 1). |
float32 | 2 | 1 | R | Input (FC04) | |
| 30033 | 32 | Phase 2 power factorPowerFactor_L2 · Sign shows current direction: positive for forward current, negative for reverse (manual note 1). |
float32 | 2 | 1 | R | Input (FC04) | |
| 30035 | 34 | Phase 3 power factorPowerFactor_L3 · Sign shows current direction: positive for forward current, negative for reverse (manual note 1). |
float32 | 2 | 1 | R | Input (FC04) | |
| 30037 | 36 | Phase 1 phase anglePhaseAngle_L1 |
float32 | 2 | ° | 1 | R | Input (FC04) |
| 30039 | 38 | Phase 2 phase anglePhaseAngle_L2 |
float32 | 2 | ° | 1 | R | Input (FC04) |
| 30041 | 40 | Phase 3 phase anglePhaseAngle_L3 |
float32 | 2 | ° | 1 | R | Input (FC04) |
| 30043 | 42 | Average line to neutral voltageVoltageLN_Avg |
float32 | 2 | V | 1 | R | Input (FC04) |
| 30047 | 46 | Average line currentCurrent_Avg |
float32 | 2 | A | 1 | R | Input (FC04) |
| 30049 | 48 | Sum of line currentsCurrent_Sum |
float32 | 2 | A | 1 | R | Input (FC04) |
| 30053 | 52 | Total system active powerActivePower_Total |
float32 | 2 | W | 1 | R | Input (FC04) |
| 30057 | 56 | Total system apparent powerApparentPower_Total |
float32 | 2 | VA | 1 | R | Input (FC04) |
| 30061 | 60 | Total system reactive powerReactivePower_Total |
float32 | 2 | VAr | 1 | R | Input (FC04) |
| 30063 | 62 | Total system power factorPowerFactor_Total · Sign shows current direction (manual note 1). |
float32 | 2 | 1 | R | Input (FC04) | |
| 30067 | 66 | Total system phase anglePhaseAngle_Total |
float32 | 2 | ° | 1 | R | Input (FC04) |
| 30071 | 70 | Supply frequencyFrequency |
float32 | 2 | Hz | 1 | R | Input (FC04) |
| 30073 | 72 | Total imported active energyEnergyImport_kWh |
float32 | 2 | kWh | 1 | R | Input (FC04) |
| 30075 | 74 | Total exported active energyEnergyExport_kWh |
float32 | 2 | kWh | 1 | R | Input (FC04) |
| 30077 | 76 | Total imported reactive energyEnergyImport_kvarh |
float32 | 2 | kvarh | 1 | R | Input (FC04) |
| 30079 | 78 | Total exported reactive energyEnergyExport_kvarh |
float32 | 2 | kvarh | 1 | R | Input (FC04) |
| 30081 | 80 | Total apparent energyEnergyApparent_kVAh |
float32 | 2 | kVAh | 1 | R | Input (FC04) |
| 30083 | 82 | Total ampere-hoursCharge_Ah |
float32 | 2 | Ah | 1 | R | Input (FC04) |
| 30085 | 84 | Total system power demandPowerDemand_Total · Calculated as import minus export (manual note 2). |
float32 | 2 | W | 1 | R | Input (FC04) |
| 30087 | 86 | Maximum total system power demandPowerDemand_TotalMax · The manual prints the unit as VA for this row, while the row above is in W; check against the meter. |
float32 | 2 | VA | 1 | R | Input (FC04) |
| 30101 | 100 | Total system apparent power demandApparentDemand_Total |
float32 | 2 | VA | 1 | R | Input (FC04) |
| 30103 | 102 | Maximum total system apparent power demandApparentDemand_TotalMax |
float32 | 2 | VA | 1 | R | Input (FC04) |
| 30105 | 104 | Neutral current demandCurrentDemand_Neutral |
float32 | 2 | A | 1 | R | Input (FC04) |
| 30107 | 106 | Maximum neutral current demandCurrentDemand_NeutralMax |
float32 | 2 | A | 1 | R | Input (FC04) |
| 30201 | 200 | Line 1 to line 2 voltageVoltage_L1L2 |
float32 | 2 | V | 1 | R | Input (FC04) |
| 30203 | 202 | Line 2 to line 3 voltageVoltage_L2L3 |
float32 | 2 | V | 1 | R | Input (FC04) |
| 30205 | 204 | Line 3 to line 1 voltageVoltage_L3L1 |
float32 | 2 | V | 1 | R | Input (FC04) |
| 30207 | 206 | Average line to line voltageVoltageLL_Avg |
float32 | 2 | V | 1 | R | Input (FC04) |
| 30225 | 224 | Neutral currentCurrent_Neutral |
float32 | 2 | A | 1 | R | Input (FC04) |
| 30235 | 234 | Phase 1 line to neutral voltage THDVoltageTHD_L1N |
float32 | 2 | % | 1 | R | Input (FC04) |
| 30237 | 236 | Phase 2 line to neutral voltage THDVoltageTHD_L2N |
float32 | 2 | % | 1 | R | Input (FC04) |
| 30239 | 238 | Phase 3 line to neutral voltage THDVoltageTHD_L3N |
float32 | 2 | % | 1 | R | Input (FC04) |
| 30241 | 240 | Phase 1 current THDCurrentTHD_L1 |
float32 | 2 | % | 1 | R | Input (FC04) |
| 30243 | 242 | Phase 2 current THDCurrentTHD_L2 |
float32 | 2 | % | 1 | R | Input (FC04) |
| 30245 | 244 | Phase 3 current THDCurrentTHD_L3 |
float32 | 2 | % | 1 | R | Input (FC04) |
| 30249 | 248 | Average line to neutral voltage THDVoltageTHD_Avg |
float32 | 2 | % | 1 | R | Input (FC04) |
| 30251 | 250 | Average line current THDCurrentTHD_Avg |
float32 | 2 | % | 1 | R | Input (FC04) |
| 30259 | 258 | Phase 1 current demandCurrentDemand_L1 |
float32 | 2 | A | 1 | R | Input (FC04) |
| 30261 | 260 | Phase 2 current demandCurrentDemand_L2 |
float32 | 2 | A | 1 | R | Input (FC04) |
| 30263 | 262 | Phase 3 current demandCurrentDemand_L3 |
float32 | 2 | A | 1 | R | Input (FC04) |
| 30265 | 264 | Maximum phase 1 current demandCurrentDemandMax_L1 |
float32 | 2 | A | 1 | R | Input (FC04) |
| 30267 | 266 | Maximum phase 2 current demandCurrentDemandMax_L2 |
float32 | 2 | A | 1 | R | Input (FC04) |
| 30269 | 268 | Maximum phase 3 current demandCurrentDemandMax_L3 |
float32 | 2 | A | 1 | R | Input (FC04) |
| 30343 | 342 | Total active energy (import plus export)EnergyTotal_kWh |
float32 | 2 | kWh | 1 | R | Input (FC04) |
| 30345 | 344 | Total reactive energy (import plus export)EnergyTotal_kvarh |
float32 | 2 | kvarh | 1 | R | Input (FC04) |
| 30347 | 346 | Phase 1 imported active energyEnergyImport_kWh_L1 |
float32 | 2 | kWh | 1 | R | Input (FC04) |
| 30349 | 348 | Phase 2 imported active energyEnergyImport_kWh_L2 |
float32 | 2 | kWh | 1 | R | Input (FC04) |
| 30351 | 350 | Phase 3 imported active energyEnergyImport_kWh_L3 |
float32 | 2 | kWh | 1 | R | Input (FC04) |
| 30353 | 352 | Phase 1 exported active energyEnergyExport_kWh_L1 |
float32 | 2 | kWh | 1 | R | Input (FC04) |
| 30355 | 354 | Phase 2 exported active energyEnergyExport_kWh_L2 |
float32 | 2 | kWh | 1 | R | Input (FC04) |
| 30357 | 356 | Phase 3 exported active energyEnergyExport_kWh_L3 |
float32 | 2 | kWh | 1 | R | Input (FC04) |
| 40003 | 2 | Demand periodDemandPeriod · Allowed values 0, 5, 8, 10, 15, 20, 30 or 60 minutes, default 60. Zero makes demand show the current value. |
float32 | 2 | min | 1 | RW | Holding (FC03) |
| 40011 | 10 | Wiring system typeSystemType · 1 = 1P2W, 2 = 3P3W, 3 = 3P4W. Writing needs the password. |
float32 | 2 | 1 | RW | Holding (FC03) | |
| 40013 | 12 | Pulse output 1 on-timePulse1Width · 60, 100 or 200, default 100. |
float32 | 2 | ms | 1 | RW | Holding (FC03) |
| 40015 | 14 | Password lock statusPasswordLock · Reads 0 when locked and 1 when unlocked. Reading also restarts the one minute password timeout. Writing any value re-locks. |
float32 | 2 | 1 | R | Holding (FC03) | |
| 40019 | 18 | Serial parity and stop bitsNetworkParityStop · 0 = no parity, 1 stop bit (default); 1 = even parity; 2 = odd parity; 3 = no parity, 2 stop bits. Needs a restart. |
float32 | 2 | 1 | RW | Holding (FC03) | |
| 40021 | 20 | Modbus node addressNetworkNode · 1 to 247, default 1. Needs a restart. |
float32 | 2 | 1 | RW | Holding (FC03) | |
| 40023 | 22 | Pulse output 1 energy per pulse indexPulse1Divisor · 0 = 0.0025, 1 = 0.01, 2 = 0.1, 3 = 1, 4 = 10, 5 = 100 kWh (kvarh) per pulse. |
float32 | 2 | 1 | RW | Holding (FC03) | |
| 40025 | 24 | Password entryPassword · Write the password here to unlock protected registers. Default password is 0000. |
float32 | 2 | 1 | RW | Holding (FC03) | |
| 40029 | 28 | Serial baud rate indexNetworkBaud · 0 = 2400, 1 = 4800, 2 = 9600 (default), 3 = 19200, 4 = 38400. |
float32 | 2 | 1 | RW | Holding (FC03) | |
| 40087 | 86 | Pulse output 1 energy sourcePulse1EnergyType · 1 import active, 2 total active, 4 export active (default), 5 import reactive, 6 total reactive, 8 export reactive. |
float32 | 2 | 1 | RW | Holding (FC03) | |
| 461457 | 61456 | Reset maximum demandResetDemand · Writing 0x0000 resets the maximum demand values. Wire address 0xF010 (the printed number is 6 digits). |
uint16 | 1 | 1 | W | Holding (FC03) | |
| 464513 | 64512 | Meter serial numberSerialNumber · Unsigned 32-bit, read only. Wire address 0xFC00 (the printed number is 6 digits). |
uint32 | 2 | 1 | R | Holding (FC03) |
Scale is the number to multiply the raw value by to get the unit. Types with more than one register (32 and 64-bit) follow the word order above.
Open in Modbus Poll
- Download the Modbus Poll blocks file.
- Open Modbus Poll, connect to the device and set its unit ID. In Modbus Poll set Word order to AB CD.
- In the blocks panel on the right, click Import CSV and pick the file. CSV import is a Pro feature. Without Pro, Modbus Poll polls the first 20 values of your blocks.
- The wire addresses are already in the file, so there is no 0-based or 1-based conversion to do.
Once the values look right, export the tag list to Ignition, Kepware, Node-RED, Home Assistant or Voltrus SCADA.
Source and accuracy
Manufacturer document: Eastron SDM630-Modbus Smart Meter Modbus Protocol Implementation (www.eastroneurope.com)
Eastron SDM630Modbus Smart Meter Modbus Protocol Implementation V1.8, PDF pp. 1-7. Read on 2026-10-24.
Also used: Eastron Europe SDM630 product page (www.eastroneurope.com)
Addresses, types, units and scale are taken from the document above. Names and descriptions are written by Voltrus. Firmware versions can differ, so confirm a value on your own device before you rely on it.
Found a mistake? Report it by email with the register address and the manual page.
Read more: Eastron SDM630 Modbus register map and simulator