MBMap Registry
  1. Devices
  2. Weidmüller
  3. Energy Meter BasicLine EM111-RTU-2P-MID

Weidmüller Energy Meter BasicLine EM111-RTU-2P-MID Modbus register map

Also covers 3099190000

Single-phase MID energy meter, 45 A direct connection, RS485 Modbus RTU

  • Official
  • 33 registers
  • Modbus RTU
  • Revision 1 · 2026-10-18
  • Identity: serial number

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
2400 8N1 · 2400 baud, 8 data bits, none parity, 1 stop bit
Byte / word order
ABCD · bytes big-endian, words high first
Addresses
0-based

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

Map

Registers
12 holding registers, 21 input registers
Groups
5
Revision
1 · 2026-10-18
Added
()
File
maps/weidmuller/em111-rtu-2p-mid.mbmap.json · 7 KB · history
SHA-256
858f13572a913a48b175507d37156db18b753435464d7253b79379d658fec650
Manufacturer
weidmueller.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
Serial number Serial number holding 64512 uint32 ABCD

Sources and notes

Source: Weidmüller, Bedienungsanleitung Energy Meter BasicLine, 3149630000, 00/06.2025

  • Addresses are the hexadecimal protocol start addresses of the manual (30001 is address 0). Measurements are read with function code 4 and the settings with function codes 3 and 16.
  • The manual does not state the byte or word order; floats are read big-endian.
  • Most settings are 32-bit floats holding a whole number. Parity and stop bits and baud rate need a restart to take effect.
  • The display says the parity default is none, while the parity register says the default is 1 (even). The map follows the display.
  • Meter is delivered with ID 1 and 2400 baud; the display allows 1200 to 9600 baud.
AreaAddressNameTypeAccessUnitScaleDescription
IR 0 float32 ABCD R V
IR 6 float32 ABCD R A
IR 12 float32 ABCD R W
IR 18 float32 ABCD R VA
IR 24 float32 ABCD R var
IR 30 float32 ABCD R
IR 70 float32 ABCD R Hz
IR 72 float32 ABCD R kWh
IR 74 float32 ABCD R kWh
IR 76 float32 ABCD R kvarh
IR 78 float32 ABCD R kvarh
IR 84 float32 ABCD R W
IR 86 float32 ABCD R W
IR 88 float32 ABCD R W
IR 90 float32 ABCD R W
IR 92 float32 ABCD R W
IR 94 float32 ABCD R W
IR 258 float32 ABCD R A
IR 264 float32 ABCD R A
IR 342 float32 ABCD R kWh
IR 344 float32 ABCD R kvarh
HR 2 float32 ABCD RW min Allowed values 0, 5, 8, 10, 15, 20, 30 and 60 minutes (default 60). At 0 the demand shows the present value and the maximum demand the highest value since the last reset
HR 12 float32 ABCD RW ms Allowed values 60, 100 and 200 ms (default 60)
HR 18 float32 ABCD RW 0 = one stop bit, no parity; 1 = one stop bit, even parity; 2 = one stop bit, odd parity; 3 = two stop bits, no parity. Needs a restart to take effect
HR 20 float32 ABCD RW Modbus address, 1 to 247
HR 28 float32 ABCD RW 0 = 2400 baud, 1 = 4800, 2 = 9600, 5 = 1200 (default 2400)
HR 86 float32 ABCD RW Energy that pulse output 1 counts: 1 = import active, 2 = total active, 4 = export active (default), 5 = import reactive, 6 = total reactive, 8 = export reactive
HR 61456 uint16 W
HR 63744 uint16 RW
HR 63760 uint16 RW
HR 63776 uint16 RW
HR 64512 uint32 ABCD R
HR 64514 uint16 R Fixed code 0x0020

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