LESSON 1 SCADA HMI

4th year na aq jusko

PLC – Programmable Logic Controller

can handle the binary input and output of the logic statement which are stored in its memory. In fact, a ____is a small Distributed Control System (DCS).

HMI – Human Machine Interface

is a hardware device that runs software that makes it possible for humans to interact with a machine

IPC – INDUSTRIAL PC

PC is a computer intended for industrial purposes (production of goods and services), with a form factor between a nettop and a server rack.

SCADA – Supervisory Control and Data Acquisition

is an application or system utilized for the real-time collection of data from one or more remote locations.

1.RTUs (Remote Terminal Units)

2.Field Instruments (Inputs)

3.Communications Network

4.SCADA HMI

There are four components considered part of the basic architecture found in nearly every running SCADA system.

Remote terminal units (RTUs)

are compact microprocessor-based control units installed at several different physical locations of the system.

Field Instruments (Inputs)

This comprises all the field devices monitored and controlled by the RTUs. The type of instruments, as well as the quantity needed in a SCADA system, is determined by the type and size of the application itself.

Communications Network

A well-designed network is essential for the efficient and reliable flow of information in a SCADA system. Some of the most common connectivity platforms are Ethernet (wired), optical fiber, and Wi-Fi.

Central SCADA

This HMI station may be referred to as

DCS – Distributed Control System

is a system of sensors, controllers, and associated computers that are distributed throughout a plant. Each of these elements serves a unique purpose such as data acquisition, process control, as well as data storage and graphical display.

SCADA

Monitoring and Control

HMI

Control and Monitoring

DCS

Proprietary (Straight Brand)

IEC 61131-3

the first vendor-independent standardized programming language for industrial automation. It was established by the International Electrotechnical Commission (IEC), a worldwide standard organization founded in 1906 and recognized worldwide for standards in the controls industry by over 50 countries

EDS – Electronic Data Sheet

are simple text files used by network configuration tools to help you identify products and easily commission them on a network.

ESI – EtherCAT Slave Information

is a master/slave protocol, which means that there is one master device (implemented completely in the software) and multiple slave devices (implemented in the hardware) connected to a network. Every cycle, the master device sends one standard Ethernet frame which encapsulates multiple EtherCAT datagrams.