TS06 Sample Content

8/2/2019 TS06 Sample Content

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2011, ISATS06 (1.3) 1

Standards

Certification

Education & Training

Publishing

Conferences & Exhibits

Industrial Data

Communications Systems

TS06, Version 1.3

2011

2

Sample Course Schedule

DAY 1

Section 1: What is Data Communications?

Group Exercise #1 Using a Telephone

Section 2: Physical Layer Basics

Lab Exercise #1 Analog Signal Analysis

Section 3: The EIA-232 Standard

Lab Exercise #2 Solving TIA-232 Problems and Digital Wave Shape

Analysis

Section 4: Beyond 232, other Standards

Group Exercise #2 Selecting Standards

Section 5: Data Link Layer Basics, Encoding, Timing/Framing

Lab Exercise #3 Asynchronous Parameters

Section 6: Framing and Error Handling

Lab Exercise #4 Analyzing XMODEM Protocol

Section 7: Wireless Serial Communications


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General Course Goals

Discuss the basic concepts of layered protocols and theISO OSI Reference Model

Develop an understanding of the Serial Standards EIA-232,422, 423, 485, and 530, as they apply to the industrial setting

Explain Local Area Network (LAN) topologies and protocols

Identify transmission techniques such as broadband, carrier-band and baseband

Discuss media access techniques: CSMA/CD, token passing,master/slave

Define the basic serial terms such as asynchronous vs.

synchronous, half/full duplex and DTE/DCE Review analog Modem technology

Explain analog and digital telephone company technology

4

General Course Goals (contd)

Discuss fiber optic technology, how to apply it and how totroubleshoot fiber optic networks

Compare Modbus and DNP3.0 serial protocols

Review current wireless technologies for plant and SCADA

applications

Review and compare popular wide-area networking technologies

Decide when to use repeaters, bridges, routers, gatewaysand switches

Outline the use of Ethernet in industrial applications and

Industrial Ethernet differences

Explain design methodology for LAN using Ethernet

Define troubleshooting and diagnostic techniques

Use common network and communication diagnostic tools


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Section 1: What is Data Communications?

Examples of Data Communications in Business and

Industry

Special Requirements for Industrial Control

What are Protocols?

Organizing Protocols in Layers

Making a phone call:

A Layered Protocol in Everyday Life

Swapping-out (replacing) Protocol Layer

Rules of communications

6

What is Data Communications? (contd)

Data communications is the electronic transmission of

data between computers, controllers or otherelectronic devices

There are many different types of datacommunications systems in business and industry

In this course we will explore several different aspects

of data communications


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What is Required for Communications

A pair of programs running on the two computer/devices thatare designed to share information

A communications channel to carry transmitted data to the

destination (the receiver)

Electrical interfaces and mechanisms to convert computerelectrical signals into a channel-suitable form

An agreed-upon set of rules for representing data and for

managing the data exchange process (a protocol)

Computer/Device Computer/Device

Data Data

ReceivingProgram

Sending

Program

CommunicationChannel

ConversionInterface

ConversionInterface

Logic to coordinate

with the sending

program (rules)

Logic to coordinate

with the receiving

program (rules)

Sending/ReceivingCircuitry

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Examples of Data Communication in Business

Main-frame to terminal serial links

Local Area Networks (LANs)

Communications to computer peripherals such as printers,scanners and modems

Wide Area Networks (WANs) and the Internet

Printer

Local Area Network

Mainframe

Router

Terminal

Workstation Workstation Workstation

Terminal

Wide Area Networkor

Internet

Serial EIA-232

Parallel


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Examples of Data Communication in Industry

Data Highways and Control LANs Remote I/O Systems

Supervisory Control and Data Acquisition (SCADA)

Field and Device Buses

Serial Links

Device Network

PLC Highway

SCADA Host

Custody Printer(USB Serial)

PLC PLC

Remote I/O

HMIs

Smart Motor Starters

SCADA Radio

Control LAN

PLC DH+

I/O

bus

Profibus-DP

ETHERNET

Radio

EIA-232

TerminalProgramming

DNP3.0 Protocol

Pipeline RTUs LANGateway

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Special Requirements for Industrial Control

Industrial networks are just like regular business networksexcept they have a few special requirements:

Predictable throughput and scheduling

Extremely low (zero?) downtime

Scalable size (without performance loss)

Used and maintained by people who are not

communications specialists

Operate in harsh and hazardous environments

May impact safety if malfunctioning/not-functioning

Industrial automation vendors originally developed their own(proprietary) communication technologies

Most automation systems today borrow technology frombusiness/IT networks and (possibly) modify it to meet industrialrequirements


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Building Up the Elements

As we already said, communications requires several

elements: a means of encoding data, acommunication mechanism that can transport the

data, and software running on computers at bothends that have the necessary logic to initiate,maintain and terminate communications

We will start with basic concepts and build up todiscussing modern LAN and WAN technologies.

We will also be introducing you to several standards

and giving you a good basic communicationsvocabulary and conceptual grounding

12

Group Exercise #1:

Communication Concepts in Daily Life

You use the telephone all the time. Consider how you place acall, answer a call, and terminate a call. What rules do you

follow? What words/phrases do you use and why?

Is there any sort of communication layering going on whenyou use the phone system to make a call? Is it different for

Cellular versus wired phone lines?

Do you need to be aware of, and understand, the underlyingtechnology in order to make a phone call?


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Group Exercise #1:Analog phone call as model

What constitutes the Physical layer that enables voice to betransmitted between the two persons?

How do you know if your message is being received properly?

How does a phone conversation encompass the following

aspects of digital communications:

Media Access Control (Lift handset, Dial tone)

Destination addressing (Phone number)

Session initiation (Self introduction)

Flow control and pacing (Conversation and verbal clues)

Data representation (Language)

Error correction (Request repetition)

Framing (Sentences)

Session termination (Hang up)

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Communication Handshaking/Protocols

1 PHONE OFFHOOK

2 RECEIVE DIALTONE

3 DIAL NUMBER

ROUTING TODESTINATION

4 DISTANT PHONERINGS

5 PARTYANSWERS

6 YOU INITIATEEXCHANGE

HELLO

CONNECTIONREQUESTED

CONNECT DATA TRANSMISSIONBEGINS

CLEAR TO USECIRCUIT

REQUEST USEOF CIRCUIT

7 YOU SPEAK

OKYes

WHAT??.....Can you hold

FLOW CONTROL ANDERROR CORRECTION

TERMINATETRANSMISSION

8 YOU SAY ByeAND HANG UP

OKthanks forcallingGoodbye

HI this is Bill X, I needto speak to Joe Y

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