المتحكم المبرمج

 

المتحكم المبرمج

المتحكم المبرمج

PROGRAMMABLE LOGIC CONTROLLER PLC

د . م / محمد محمود اسماعيل

مدرس بكلية الهندسة – جامعة قناة السويس

مدير قسم الأجهزة والتحكم بشركة اسيتو الصناعية

 

  • مقدمة
  • خلفيه تاريخيه
  • مزايا استخدام أجهزة التحكم
  • متطلبات للحاكمات القابله للبرمجه
  • أجزاء أجهزة التحكم المرمج

Introduction

Historical Background

Advantages of Using PLC

Requirements for Computation

Components of a PLC

المقدمة

INTRODUCTION

Definitions of PLC

Programmable logic controller ( PLC ) .

Programmable controller ( PC ) .

IsA device that is capable of being programmed to performa controlling function .

خلفيه تاريخيه

HISTORICAL BACKGROUND

The first PLC Construction by General Motors in 1968 .

1968 Concept of the programmable controller .

1969 Hardware – based central processing unit – Logic in

  • Struction .

1972 Source code edit .

1974 Multiprocessing PLCL Logic , timer / counter , data move , arithmetic 12k memory , 1024 input and output .

1976 Remote input / output System .

1977 Micropeocessor – based PLC with logic processor .

1978 Universal input / output structure .

1979 Bit – slice processor architecture .

1980 High – performance remote input / output wit in – telligent input / output Modules and block Transfer .

1981 Medium speed data highway ( token passing ) .

1982 Macrocode , multiprocessing 4th generation PLC.

1983 Basic language coprocessor Bulk storage .

1986 Flexibel multi language programmable controllers.

مزايا استخدام أجهزة التحكم

Advantages of Using PLC

PLC are easy to program and install .

The speed with which internal times operate is much faster .

Than – conventional time delay relay systems .

Accessto PLCs could be restricted or protected

PLCs have the advantage of problem – solving capabitities , over any other type of control system .

PLCs are usually designed with communication ca –

Pabilities that allow to interface with local or remote com – puter systems or operator .

PLCs are extremely reliable

متطلبات للحاكمات القابلة للبرمجة

Requirements for Computation

Function of input / output data & Instructions of HC

The main Componfnts of A human Compuitation

The main Components of the Machine Computing

MACHINE COMPUTING

Consequently , every PLC must have the following com – ponents ;

  • A Processor Capable of interpreting and executing pro – grams .
  • A Memory for storing programs and Data .
  • A Means of Transferring information between the mem – ory and the Processor .
  • And between the PLC and the Outside World .

أجزاء أجهزة التحكم

COMPONENTS OF PLC

POWER SUPPLY
IPLC BLOCK DIAGRAM

The Input Interface .

The Output Interace .

The CPU and MEMORY .

The Power Supply .

The Programming Languages .

The Programming Device , Programming Terminal .

A programming device , or programming terminal .

Allows a user to enter instructions into memory in the form of a program .