PLC Communication

PLC Communication

Power Line Carrier (PLC) Communication uses the already existing power distribution lines and wires for data transmission. ModemTec’s modems enable this type of communication over medium or low voltage power lines.

What is PLC Communication?

PLC (Power Line Carrier) Communication technology uses power distribution lines and wires for data transmission. This technology does not require any special cables.

Advantages of PLC Communication

  • Easy installation – no need to install additional cables, antennas, or wireless transmitters
  • Own communication channel – reliable, stable, and secure network without fees and restrictions
  • Independence from mobile operators – no need for signal coverage and third party dependency

PLC Communication Over Medium Voltage Lines


Key Features

  • Operates on power lines up to 22 kV (35kV)
  • Extraordinary communication distance:
    • Cable lines up to 10 km
    • Overhead lines up to 50 km
  • Communication interfaces RS485, RS232, Ethernet*
  • Robust and encrypted communication
  • Line parameters adjustment
  • Automatic network routing*
  • Suitable for both, indoor and outdoor installation

*Valid for MT-MVPLC1-S modem

Modem Comparison

PLC standardMTECG3-PLC
Max. communication rate10 kbps100 kbps
Communication interfacesRS485, RS232RS485, RS232, Ethernet
Reliable and robust communication
Carrier frequency adjustment
Extended cybersecurity
Automatic line quality adjustment
Automatic routing
Remote configuration

PLC Communication Over Low Voltage Lines

PLC modem MT-49R
PLC modem MT-34R

Key Features

  • Operates on any power lines 0 to 1,000 V
  • Communication interface RS485, RS232 or RS422
  • Communication distance up to 5,000 m
  • Single-phase and three-phase variants
  • Advanced DSP algorithms and error-correction codes
  • Routing in the network
  • High transmission output, narrowband communication
  • Easy configuration through RSet application

Typical Applications

  • Communication in the industry and transport
    • Production processes, energy balance
    • Connection with remote sites (boreholes, treatment plants, Photovoltaics …)
    • Maritime transport automation systems
  • Smart grids
    • Meter readings (electricity, water, heat, gas …)
    • Distribution control
  • Building automation
    • Industrial areas, office and residential buildings
    • Museums, archives, historic buildings, halls and stadiums

Modem Comparison

Number of phases for Rx/Tx13
Max. communication rate10 kbps10 kbps
InterfacesRS232, RS485RS232, RS485, RS422
Binary state transfer
Carrier frequency adjustment
Possibility of external coupling