PLC and RTU Communication interface

Modern RTUs and PLCs (Programmable Logic Controllers) offer a wide variety of communications means, either built in directly or through a module.

The following list represents a variety of transmission methods supported:

  • RS-232/RS-442/RS-485
  • Dialup telephone lines
  • Dedicated telephone lines
  • Microwave
  • Satellite
  • X.25
  • Ethernet
  • 802.11a/b/g
  • Radio (VHF, UHF, etc)
  • Wireless
  • Modbus
  • Profibus
  • Fieldbus etc

Author: Arjun Venkatraman