---
lang: "en"
title: "LKM354 LoRaWAN Meter Reader with Gateway for Meters with MODBUS TCP to IEC62056-21 Protocol"
sku: "LKM354"
canonical_url: "https://shop.marcomweb.it/en/modbus/lkm354-lorawan-meter-reader-with-gateway-for-meters-with-modbus-tcp-to-iec62056-21-protocol"
brand: "MARCOM S.r.l."
end_of_life: "false"
---

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LKM354 LoRaWAN Meter Reader with Gateway for Meters with MODBUS TCP to IEC62056-21 Protocol

The LKM series 868 MHz LoRaWAN meter reader with electric meter protocol to Modbus protocol gateway is able to read IEC62056-21 energy meters and convert the data into Modbus registers so that field devices or remote applications can measure data via Modbus TCP. Meter data is sent to the LoRaWAN server through the LoRaWAN gateway at user-defined periods. Meter data can also be simultaneously sent to the MQTT server. OBIS codes of the read meters are fully definable by the end-user.
Typical applications: Automatic meter reading, telemetry, energy management.

## Technical Features

- Wide range power input 5-48V (max. 60V) DC
- Supports 2 x 10/100Base-T(X) ports
- Supports Full/Half-Duplex, auto MDI/MDI-X on each port
- Supports 1 x RS232 and 1 x RS485 Serial connection up to 115200 Baud
- Integrated web interface for ease of use
- Radio band options: 868 MHz
EU 868 MHz - Europe, LoRaWAN RF communication
- Configurable LoRaWAN data sending interval
- 2 different gateway operating modes: 
 IEC meter to Modbus TCP serial gateway with MQTT editor
 IEC meter to Modbus RTU TCP/IP gateway with MQTT editor
- Read up to 20 IEC meters and convert their data to Modbus TCP or RTU
- Read up to 48 OBIS registers, all user-configurable from web interface
- MQTT editor with different data transfer options
 OBIS values as data objects
 OBIS values as Modbus frames
- Integrated LoRaWAN duty cycle control
- Integrated LoRaWAN payload size control. User can read data at any interval
- LKM automatically splits based on maximum allowed payload size and duty cycle block times.
- Over-the-air activation (OTAA) or activation by personalization (ABP) selectable
- User-defined LoRaWAN port
- Adaptive Data Rate functionality
- Selectable Uplink data rate
- Selectable power level
- LoRaWAN Class C and Class A support
- Easy to follow device status on the web interface
- Easy to follow LoRaWAN packets on the web interface
- Easy to follow meter reading and Modbus communication status from the web interface.
- Easy to follow LoRaWAN packets on the web interface
- Easy to follow meter reading and Modbus communication status from the web interface
- Easily follow OBIS to Modbus mapping status from the web interface
- Easily follow meter reading data from the web interface
- IP filter based on White List or Black List up to 20 IP addresses
- Web-based firmware update
- Ability to store 2 firmwares on the same device (only 1 active)
- Wide operating temperature range from -40 to 85 °C
- Robust IP-40 metal housing design
- DIN rail mounting

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Source: https://shop.marcomweb.it/en/modbus/lkm354-lorawan-meter-reader-with-gateway-for-meters-with-modbus-tcp-to-iec62056-21-protocol

MARCOM S.r.l. — a trusted supplier for industrial automation and building automation.