SCADA

Tesco Controls

As one of the oldest SCADA system integrators in the world, TESCO is able to bring a unique level of experience and ability to your projects.

Introduction

The term SCADA refers to a central system that monitors and controls a complete site or a system spread out over a long distance (kilometers/miles). The bulk of the site control is actually performed automatically by a Remote Terminal Unit (RTU), or by a Programmable Logic Controller (PLC). Host control functions are almost always restricted to basic site over-ride or supervisory level capability. For example, a PLC may control the flow of cooling water through part of an industrial process, but the SCADA system may allow an operator to change the control set point for the flow, and will allow any alarm conditions such as loss of flow or high temperature to be recorded and displayed. The feedback control loop is closed through the RTU or PLC; the SCADA system monitors the overall performance of that loop.

SCADA Benefits

It collects, delivers and presents real-time supervisory control and data acquisition information accurately and quickly. Graphical displays assist plant operators with control operations to optimize processes in industrial and utility plants. Process information for engineers and managers is easily accessible.

It offers peer-to-peer communications allowing several systems to control separate areas of a process, yet share common variables across a network as if they were local.