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  2. Schneider Electric
  3. EM1200 / EM1220

Schneider Electric EM1200 / EM1220 Modbus register map

Conzerv power and energy meters with RS485 Modbus RTU: per-phase power, power factor and energy (EM1200, EM1220), current, voltage and frequency (EM1220), setup, diagnostics and identity

  • Official
  • 70 registers
  • Modbus RTU
  • Revision 3 · 2026-10-31
  • Identity: model, firmware

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
19200 8E1 · 19200 baud, 8 data bits, even parity, 1 stop bit
Byte / word order
CDAB · bytes big-endian, words low first (word swap)
Addresses
1-based · wire address = address − 1

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

Map

Registers
70 holding registers
Groups
10
Translation tables
1
Revision
3 · 2026-10-31
Added
()
File
maps/schneider-electric/em1000-em1100-em1200.mbmap.json · 16 KB · history
SHA-256
279e72b1e2128df334ea025c78f80bd61f19807d71cd9a677355e5ff74356616
Manufacturer
se.com

Device identity

What a tool can read to check that this map fits the connected device (SPEC.md section 4.7). Registers with a role are read like any other register.

Registers
RoleRegisterAddressTypeValues
Firmware Firmware version holding 21 string[5]
Model Model holding 27 uint16 403 = EM1000, 404 = EM1200, 405 = EM1220

Sources and notes

Source: Schneider Electric Conzerv EM1000/EM1200/EM1220 power and energy meter user manual EAV95462-01, chapter 6

  • Only the EM1200 and EM1220 have the RS485 port; the EM1000 has a pulse output and no Modbus. The file keeps its old name.
  • Function 03 to read, 16 to write. Defaults: unit ID 1, 19200 bit/s, even parity, 1 stop bit.
  • Addresses are the manual's absolute addresses (3049 is 43049), so this map is 1-based. Every reading is 32 bits in two registers; floats have the word order that Modscan calls swapped (low word first).
  • No scaling: the meter sends the full value. The manual does not give the units of power and energy.
  • Power, power factor and energy readings return 0 unless the parameter is selected in the setup (Wh/VAh selection). Current, voltage and frequency are only on the EM1220.
  • The factory TURBO block (2501-2599) holds the same readings at other addresses and can be reconfigured; it is not listed.
  • The setup block (1001-1040) can only be read and written as a whole block, so its registers are read-only in this map.
  • Written from the manufacturer's manual; not tested on a device.
AreaAddressNameTypeAccessUnitScaleDescription
HR 3057 float32 CDAB R A EM1220 only
HR 3009 float32 CDAB R A EM1220 only
HR 3025 float32 CDAB R A EM1220 only
HR 3041 float32 CDAB R A EM1220 only
HR 3059 float32 CDAB R V EM1220 only
HR 3011 float32 CDAB R V EM1220 only
HR 3027 float32 CDAB R V EM1220 only
HR 3043 float32 CDAB R V EM1220 only
HR 3061 float32 CDAB R V EM1220 only
HR 3013 float32 CDAB R V EM1220 only
HR 3029 float32 CDAB R V EM1220 only
HR 3045 float32 CDAB R V EM1220 only
HR 3063 float32 CDAB R Hz EM1220 only
HR 3051 float32 CDAB R Returns 0 unless the parameter is selected in the meter setup
HR 3003 float32 CDAB R Returns 0 unless the parameter is selected in the meter setup
HR 3019 float32 CDAB R Returns 0 unless the parameter is selected in the meter setup
HR 3035 float32 CDAB R Returns 0 unless the parameter is selected in the meter setup
HR 3053 float32 CDAB R Returns 0 unless the parameter is selected in the meter setup
HR 3005 float32 CDAB R Returns 0 unless the parameter is selected in the meter setup
HR 3021 float32 CDAB R Returns 0 unless the parameter is selected in the meter setup
HR 3037 float32 CDAB R Returns 0 unless the parameter is selected in the meter setup
HR 3049 float32 CDAB R Returns 0 unless the parameter is selected in the meter setup
HR 3001 float32 CDAB R Returns 0 unless the parameter is selected in the meter setup
HR 3017 float32 CDAB R Returns 0 unless the parameter is selected in the meter setup
HR 3033 float32 CDAB R Returns 0 unless the parameter is selected in the meter setup
HR 3055 float32 CDAB R Returns 0 unless the parameter is selected in the meter setup
HR 3007 float32 CDAB R Returns 0 unless the parameter is selected in the meter setup
HR 3023 float32 CDAB R Returns 0 unless the parameter is selected in the meter setup
HR 3039 float32 CDAB R Returns 0 unless the parameter is selected in the meter setup
HR 3201 float32 CDAB R Returns 0 unless the parameter is selected in the meter setup
HR 3203 float32 CDAB R Returns 0 unless the parameter is selected in the meter setup
HR 3205 float32 CDAB R Returns 0 unless the parameter is selected in the meter setup
HR 3265 uint32 CDAB R s
HR 3267 uint32 CDAB R s
HR 3269 uint32 CDAB R Number of input voltage interruptions
HR 7001 float32 CDAB R Energy stored at the last integrator reset or overflow
HR 7003 float32 CDAB R Energy stored at the last integrator reset or overflow
HR 7005 float32 CDAB R Energy stored at the last integrator reset or overflow
HR 7065 uint32 CDAB R s
HR 7067 uint32 CDAB R s
HR 7069 uint32 CDAB R
HR 1001 float32 CDAB R A Setup block: read and write the 40 registers from 1001 as one block
HR 1003 float32 CDAB R A Setup block: read and write the 40 registers from 1001 as one block
HR 1005 float32 CDAB R V Setup block: read and write the 40 registers from 1001 as one block
HR 1007 float32 CDAB R V Setup block: read and write the 40 registers from 1001 as one block
HR 1009 uint16 R Setup block: read and write the 40 registers from 1001 as one block
HR 1010 uint16 R Setup block: read and write the 40 registers from 1001 as one block; 0-200 mA
HR 1011 uint16 R Setup block: read and write the 40 registers from 1001 as one block
HR 1012 uint16 R Setup block: read and write the 40 registers from 1001 as one block
HR 1013 uint16 R Setup block: read and write the 40 registers from 1001 as one block
HR 1017 uint16 R Setup block: read and write the 40 registers from 1001 as one block
HR 1018 uint16 R Setup block: read and write the 40 registers from 1001 as one block
HR 1019 uint16 R Setup block: read and write the 40 registers from 1001 as one block; 1-247
HR 2001 uint32 CDAB W Write 1 (function 16, both registers) to clear the energy integrator
HR 2003 uint32 CDAB W Write 1 (function 16, both registers) to restore the default setup
HR 2005 uint32 CDAB RW Read and write both registers together
HR 2701 uint32 CDAB R
HR 2703 uint32 CDAB R
HR 2705 uint32 CDAB R
HR 2707 uint32 CDAB R
HR 2709 uint32 CDAB R
HR 2723 uint32 CDAB R
HR 2725 uint32 CDAB R
HR 2727 uint32 CDAB R
HR 1 string[10] R
HR 11 string[10] R EM1200 or EM1220
HR 21 string[5] R e.g. V01.02.02
HR 26 uint16 R e.g. 10202 for V01.02.02
HR 27 uint16 R
HR 28 string[3] R

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