Search results
Results from the WOW.Com Content Network
A programmable logic controller (PLC) or programmable controller is an industrial computer that has been ruggedized and adapted for the control of manufacturing processes, such as assembly lines, machines, robotic devices, or any activity that requires high reliability, ease of programming, and process fault diagnosis.
Design changes that happen early in the design process are less expensive when compared to those that take place after it is introduced into full-scale production. The cost of the change increases with its development time. [3] Fundamentally, design changes can be classified into pre production and post production changes.
Distributed Network Protocol 3 (DNP3) is a set of communications protocols used between components in process automation systems. Its main use is in utilities such as electric and water companies. Usage in other industries is not common. It was developed for communications between various types of data acquisition and control
Examples of operational technology include: Programmable logic controllers (PLCs) Supervisory control and data acquisition systems (SCADA) Distributed control systems (DCS) Computer numerical control (CNC) systems, including computerized machine tools; Scientific equipment (e.g. digital oscilloscopes)
In remote applications, such as a large water treatment plant, PLCs may connect directly to SCADA over a wireless link, or more commonly, utilise an RTU for the communications management. PLCs are specifically designed for control and were the founding platform for the IEC 61131-3 programming languages. For economical reasons, PLCs are often ...
An industrial control system (ICS) is an electronic control system and associated instrumentation used for industrial process control.Control systems can range in size from a few modular panel-mounted controllers to large interconnected and interactive distributed control systems (DCSs) with many thousands of field connections.
A very early example of a Direct Digital Control DCS was completed by the Australian business Midac in 1981–82 using R-Tec Australian designed hardware. The system installed at the University of Melbourne used a serial communications network, connecting campus buildings back to a control room "front end".
Change committee: The change committee decides whether a CHANGE REQUEST will be implemented or not. Sometimes this task is performed by the project manager as well. Change builder: The change builder is the person who plans and implements the change; it could be argued that the planning component is (partially) taken on by the project manager.