Energy meters

Schneider Electric iEM3355 Modbus register map

DIN-rail energy meter for direct connection up to 125 A, with four-quadrant energy, current, voltage, power and frequency measurement. It supports up to four tariffs, has one programmable digital input and one programmable digital output, an overload alarm and an RS-485 Modbus RTU port.

Protocol
Modbus RTU
Defaults
RS-485 Modbus RTU (p. 55). Baud rate 9600, 19200 or 38400, parity odd, even or none, one stop bit, address 1 to 247, all set on the meter display. Supported functions: 03 read holding registers, 16 write multiple registers, 43/14 read device identification.
Addresses in the manual
1-based register numbers (wire address is the number minus 1)
32 and 64-bit values
Not stated in the manual
Registers listed
75
Checked against
DOCA0005EN-16, 05/2026

Address base. The manual's table format description (p. 56) says the Address column is the value sent in the Modbus frame and the Register column is the decimal register number, where register = address + 1. The addresses recorded here are the Register numbers, so the wire address is the printed number minus 1 (for example register 3000 is address 0x0BB7). For example 30 in the manual (Meter name) is address 29 on the wire.

Word order. The manual does not say how 32-bit floats and 64-bit values are laid out across registers.

Modbus Poll and the Modbus protocol itself count from 0. The "Wire address" column is the number to type into Modbus Poll.

Downloads

Register table (CSV) Modbus Poll blocks (CSV) Modbus Poll template (JSON)

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

75 registers
Manual Wire Register Type Regs Unit Scale Access Area
30 29 Meter nameMeter_Name string 20 1 R Holding (FC03)
50 49 Meter modelMeter_Model string 20 1 R Holding (FC03)
70 69 Manufacturer nameManufacturer string 20 1 R Holding (FC03)
130 129 Serial numberSerial_Number uint32 2 1 R Holding (FC03)
136 135 Hardware revisionHardware_Revision string 5 1 R Holding (FC03)
1637 1636 Present firmware versionFirmware_Version · Encoded in the manual's DLF format, X.Y.ZTT. uint16 1 1 R Holding (FC03)
45000 44999 Diagnostics error status bitsDiagnostics_Error_Status · One bit per diagnostic code: bit 0 = code 101, bit 1 = 102, bits 2 to 8 = codes 201 to 207. 1 means active. bitfield16 1 1 R Holding (FC03)
2004 2003 Meter operation timerMeter_Operation_Timer uint32 2 s 1 R Holding (FC03)
2014 2013 Number of phasesNumber_Of_Phases uint16 1 1 R Holding (FC03)
2015 2014 Number of wiresNumber_Of_Wires uint16 1 1 R Holding (FC03)
2016 2015 Power system configurationPower_System · Values: 0 = 1PH2W L-N, 1 = 1PH2W L-L, 2 = 1PH3W L-L with N, 3 = 3PH3W, 11 = 3PH4W, 13 = 1PH4W multi L with N. Written through the command interface (write by command). uint16 1 1 RW Holding (FC03)
2017 2016 Nominal frequencyNominal_Frequency · Written through the command interface (write by command). uint16 1 Hz 1 RW Holding (FC03)
2129 2128 Energy pulse durationEnergy_Pulse_Duration · Written through the command interface (write by command). uint16 1 ms 1 RW Holding (FC03)
2131 2130 Digital output association for energy pulsePulse_Output_Association · 0 = disabled, 1 = DO1 enabled for the active energy pulse output. Written through the command interface (write by command). uint16 1 1 RW Holding (FC03)
2132 2131 Energy pulse weightPulse_Weight · Written through the command interface (write by command). float32 2 pulse/kWh 1 RW Holding (FC03)
5250 5249 Requested command numberCommand_Requested · First word of the command block (registers 5250 to 5374). uint16 1 1 RW Holding (FC03)
5375 5374 Command statusCommand_Status uint16 1 1 R Holding (FC03)
5376 5375 Command result codeCommand_Result · 0 = valid operation, 3000 = invalid command, 3001 = invalid parameter, 3002 = invalid number of parameters, 3007 = operation not performed. uint16 1 1 R Holding (FC03)
6500 6499 Communication protocolComm_Protocol · 0 = Modbus. uint16 1 1 R Holding (FC03)
6501 6500 Modbus slave addressModbus_Address · Written through the command interface (write by command). uint16 1 1 RW Holding (FC03)
6502 6501 Baud rate codeBaud_Rate · 0 = 9600, 1 = 19200, 2 = 38400. Written through the command interface (write by command). uint16 1 1 RW Holding (FC03)
6503 6502 Parity codeParity · 0 = even, 1 = odd, 2 = none. One stop bit. Written through the command interface (write by command). uint16 1 1 RW Holding (FC03)
7274 7273 Digital input control modeDI_Control_Mode · 0 = normal input status, 2 = multi-tariff control, 3 = input metering, 5 = all energy reset. uint16 1 1 R Holding (FC03)
9673 9672 Digital output control mode statusDO_Control_Mode · 2 = alarm, 3 = pulse (kWh), 6 = pulse (kVARh), 0xFFFF = disabled. uint16 1 1 R Holding (FC03)
3000 2999 Phase 1 currentCurrent_I1 float32 2 A 1 R Holding (FC03)
3002 3001 Phase 2 currentCurrent_I2 float32 2 A 1 R Holding (FC03)
3004 3003 Phase 3 currentCurrent_I3 float32 2 A 1 R Holding (FC03)
3010 3009 Average currentCurrent_Avg float32 2 A 1 R Holding (FC03)
3020 3019 Voltage L1 to L2Voltage_L1_L2 float32 2 V 1 R Holding (FC03)
3022 3021 Voltage L2 to L3Voltage_L2_L3 float32 2 V 1 R Holding (FC03)
3024 3023 Voltage L3 to L1Voltage_L3_L1 float32 2 V 1 R Holding (FC03)
3026 3025 Average line to line voltageVoltage_LL_Avg float32 2 V 1 R Holding (FC03)
3028 3027 Voltage L1 to neutralVoltage_L1_N float32 2 V 1 R Holding (FC03)
3030 3029 Voltage L2 to neutralVoltage_L2_N float32 2 V 1 R Holding (FC03)
3032 3031 Voltage L3 to neutralVoltage_L3_N float32 2 V 1 R Holding (FC03)
3036 3035 Average line to neutral voltageVoltage_LN_Avg float32 2 V 1 R Holding (FC03)
3054 3053 Phase 1 active powerActive_Power_L1 float32 2 kW 1 R Holding (FC03)
3056 3055 Phase 2 active powerActive_Power_L2 float32 2 kW 1 R Holding (FC03)
3058 3057 Phase 3 active powerActive_Power_L3 float32 2 kW 1 R Holding (FC03)
3060 3059 Total active powerActive_Power_Total float32 2 kW 1 R Holding (FC03)
3068 3067 Total reactive powerReactive_Power_Total float32 2 kVAR 1 R Holding (FC03)
3076 3075 Total apparent powerApparent_Power_Total float32 2 kVA 1 R Holding (FC03)
3084 3083 Total power factorPower_Factor_Total · Four-quadrant encoding with values between -2 and 2; the quadrant ranges are listed in the manual. float32 2 1 R Holding (FC03)
3110 3109 FrequencyFrequency float32 2 Hz 1 R Holding (FC03)
3192 3191 Total power factor, IEC formatPF_Total_IEC_Float · Added by the power factor firmware update; ranges from -1 to +1. float32 2 1 R Holding (FC03)
3194 3193 Total power factor, lead/lag formatPF_Total_LeadLag_Float · Added by the power factor firmware update; ranges from -1 to +1. float32 2 1 R Holding (FC03)
3196 3195 Total power factor, IEC format, integerPF_Total_IEC_Int · Integer encoding of the IEC power factor; see the manual for the scaling. uint16 1 1 R Holding (FC03)
3197 3196 Total power factor, lead/lag format, integerPF_Total_LeadLag_Int · Integer encoding of the lead/lag power factor; see the manual for the scaling. uint16 1 1 R Holding (FC03)
4191 4190 Active tariff rateActive_Tariff · 0 = multi-tariff disabled, 1 to 4 = rate A to rate D. It can only be set this way when the tariff mode is set to by communication. uint16 1 1 RW Holding (FC03)
3204 3203 Total active energy importTotal_Active_Energy_Import · Manual type name is Int64; the manual describes it as an unsigned 64-bit value. Cannot be reset. uint64 4 Wh 1 R Holding (FC03)
3208 3207 Total active energy exportTotal_Active_Energy_Export · Cannot be reset. uint64 4 Wh 1 R Holding (FC03)
3220 3219 Total reactive energy importTotal_Reactive_Energy_Import · Cannot be reset. uint64 4 VARh 1 R Holding (FC03)
3224 3223 Total reactive energy exportTotal_Reactive_Energy_Export · Cannot be reset. uint64 4 VARh 1 R Holding (FC03)
3256 3255 Partial active energy importPartial_Active_Energy_Import · Partial counter that can be reset. uint64 4 Wh 1 R Holding (FC03)
3272 3271 Partial reactive energy importPartial_Reactive_Energy_Import · Partial counter that can be reset. uint64 4 VARh 1 R Holding (FC03)
3518 3517 Phase 1 active energy importActive_Energy_Import_L1 uint64 4 Wh 1 R Holding (FC03)
3522 3521 Phase 2 active energy importActive_Energy_Import_L2 uint64 4 Wh 1 R Holding (FC03)
3526 3525 Phase 3 active energy importActive_Energy_Import_L3 uint64 4 Wh 1 R Holding (FC03)
3558 3557 Input metering accumulationInput_Metering_Accumulation · The manual gives the unit only as "Unit", set by the input metering configuration. uint64 4 1 R Holding (FC03)
4196 4195 Rate A active energy importRate_A_Active_Energy_Import uint64 4 Wh 1 R Holding (FC03)
4200 4199 Rate B active energy importRate_B_Active_Energy_Import uint64 4 Wh 1 R Holding (FC03)
4204 4203 Rate C active energy importRate_C_Active_Energy_Import uint64 4 Wh 1 R Holding (FC03)
4208 4207 Rate D active energy importRate_D_Active_Energy_Import uint64 4 Wh 1 R Holding (FC03)
45100 45099 Total active energy import (float)Total_Active_Energy_Import_F · Revision 16 of the manual prints the unit as kWh for the float energy registers; an older revision (DOCA0005EN-12) printed Wh for the same registers. float32 2 kWh 1 R Holding (FC03)
45102 45101 Total active energy export (float)Total_Active_Energy_Export_F float32 2 kWh 1 R Holding (FC03)
45104 45103 Total reactive energy import (float)Total_Reactive_Energy_Import_F float32 2 kVARh 1 R Holding (FC03)
45106 45105 Total reactive energy export (float)Total_Reactive_Energy_Export_F float32 2 kVARh 1 R Holding (FC03)
45108 45107 Partial active energy import (float)Partial_Active_Energy_Import_F float32 2 kWh 1 R Holding (FC03)
45110 45109 Partial reactive energy import (float)Partial_Reactive_Energy_Import_F float32 2 kVARh 1 R Holding (FC03)
45128 45127 Phase 1 reactive energy import (float)Reactive_Energy_Import_L1_F · Added by the 1PH4W multi L-N update. float32 2 kVARh 1 R Holding (FC03)
45130 45129 Phase 2 reactive energy import (float)Reactive_Energy_Import_L2_F · Added by the 1PH4W multi L-N update. float32 2 kVARh 1 R Holding (FC03)
45132 45131 Phase 3 reactive energy import (float)Reactive_Energy_Import_L3_F · Added by the 1PH4W multi L-N update. float32 2 kVARh 1 R Holding (FC03)
45001 45000 Overload alarm setupOverload_Alarm_Setup · 0x0000 = disabled, 0x0100 = enabled. Written through the command interface (write by command). bitfield16 1 1 RW Holding (FC03)
45002 45001 Overload alarm pickup setpointOverload_Alarm_Pickup · Written through the command interface (write by command). float32 2 kW 1 RW Holding (FC03)
45005 45004 Overload alarm activated statusOverload_Alarm_Active · 0x0000 = inactive, 0x0100 = active. bitfield16 1 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

  1. Download the Modbus Poll blocks file.
  2. Open Modbus Poll, connect to the device and set its unit ID. The manual does not state the word order for 32-bit values. Check one known value (a voltage or a counter) and switch the setting if it reads wrong.
  3. 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.
  4. 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: iEM3100 / iEM3200 / iEM3300 series user manual (productinfo.se.com)

DOCA0005EN-16, 05/2026, p. 55-56, 62-69. Read on 2026-10-24.

Also used: iEM3100 / iEM3200 / iEM3300 series online manual: Communications using Modbus (productinfo.se.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.

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