Programmable Logic Controllers (PLCs)

Programmable Logic Controllers (PLCs) have been an integral part of factory automation and industrial process control for decades. These systems perform many functions, providing a variety of analog and digital input and output interfaces; signal processing; data conversion; and various communication protocols. All of the PLC’s components and functions are centered around the controller, which is programmed for a specific task. PLCs control a wide array of applications from simple lighting functions to environmental systems to chemical processing plants.

How a PLC works

PLC How It Works Diagram

  • The PLC receives information’s through different sensors.

  • Sequentially executes programs according to the information from input sensors.

  • Gives the solution of problems and sends appropriate commands as output.

Device Types

AspenTech Inmation supports different types of PLC devices. For further information, refer to one of the following pages:

Configuration

The configuration of PLC datasources is described in detail in the PLC Datasource Object Guide.