SCADASupervisor Control And Data Acquisition.

SCADA

RTU PLC HMI TELEMETRY DATA

SYSTEM ACQUISITION

RTURTU: Short for remote terminal unit.

In SCADA systems, an RTU is a device installed at a remote location that collects data, codes the data into a format that is transmittable and transmits the data back to a central station, or master.

PLCPLC: A PROGRAMMABLE LOGIC

CONTROLLER (PLC) is an industrial computer control system that continuously monitors the state of input devices and makes decisions based upon a custom program to control the state of output devices.

HMIHMI: HMI stands for Human

Machine Interface. This is the interface between the operator and the controller. The HMI is the controller operating panel.

Telemetry systemTelemetry system: Telemetry is the wireless

transmission and reception of measured quantities for the purpose of remotely monitoring environmental conditions or equipment parameters. The term is also used in reference to the signals containing such data.

Data AcquisitionData Acquisition: Data acquisition (DAQ) is

the process of measuring an electrical or physical phenomenon such as voltage, current, temperature, pressure, or sound with a computer. A DAQ system consists of sensors, DAQ measurement hardware, and a computer with programmable software.

A Typical SCADA System