---
lang: "en"
title: "LKM144: IEC62056-21 Energy Meter to MODBUS RTU Gateway"
sku: "LKM144"
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brand: "MARCOM S.r.l."
end_of_life: "false"
---

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LKM144: IEC62056-21 energy meter (RS485 port) to MODBUS RTU (RS485 port) gateway

The LKM series Modbus RTU to IEC62056-21 gateway is designed for use with electricity meters that communicate using the IEC62056-21 standard. Meters supporting the IEC62056-21 standard have read tables containing various data such as import energy, export energy, phase voltages, and currents. The LKM series Modbus RTU to IEC62056-21 Gateway automatically reads these values and maps them to Modbus registers. Field devices or software systems can easily read the data via the Modbus RTU protocol, allowing energy meter readings to be smoothly integrated into field automation systems without the need to implement the IEC6056-21 protocol.

## Technical Features

- RS232 DB9 male on the modem side and 2-wire RS485 on the meter side
- Automatically reads electricity meters communicating in the IEC62056-21 standard and maps them to the predefined MODBUS register table
- Up to 10 energy meters can be read on the RS485 network
- Modbus address configurable via Modbus commands
- Reading period configurable on the IEC6056-21 side via Modbus commands
- Reading table number configurable on the IEC6056-21 side via Modbus commands
- Dual power input: can be powered via RS232 line or external power input
- Wide range power input: 3.3 V - 28 V DC
- Wide operating temperature range from -40 to 85 ° C
- Very small form factor, only 2.1 x 4.2 x 4.4 cm
- Customization of the reading process and logging of tables according to customer request
- Firmware upgradeable over serial line

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Source: https://shop.marcomweb.it/en/dlms/lkm144-iec62056-21-energy-meter-to-modbus-rtu-gateway

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