1. Evolution of NCS
Networked Control System

8. DISTRIBUTED CONTROL
SYSTEM
• A system of dividing plant or process
control into several areas of responsibility,
each managed by its own controller, with
the whole system connected to form a
single entity, usually by means of
communication buses..

11. Localized vs Distributed
Localized Distributed
Processing
tool
Programmable logic
controller / Programmable
controller
Remote Terminal Unit
Priority Data Acquisition
Local Automation
Data Transmission (Opt)
Data Acquisition
Data Transmission
Local Automation (Opt)
•Both PLC/PC and RTU support all automation functions only the
priority/ sequence differ.
•In practice, it is possible to use a Controller as RTU or RTU as
Controller