OMRONCQM1H SERIES

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2.0 PLC Hardware Design

PLC Configuration

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Rack

Shoe Box

Micro

Mini

PLC Configuration

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The configuration of PLC refers to the packaging of the components.

Typical configurations are listed below from largest to smallest.

� Rack Type : A rack can often be as large as 18” by 30” by 10”

� Mini: These are similar in function to PLC racks, but about the half size.

Dedicated Backplanes can be used to support the cards OR DIN rail

mountable with incorporated I/O bus in module.

� Shoebox: A compact, all-in-one unit that has limited expansion

capabilities. Lower cost and compactness make these ideal for small

applications. DIN rail mountable.

� Micro: These units can be as small as a deck of cards. They tend to have

fixed quantities of I/O and limited abilities, but costs will be lowest. DIN

rail mountable.

Sizing of PLC

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Micro PLC: I/O up to 32 points

Small PLC: I/O up to 128 points

Medium PLC: I/O up to 1024 points

Large PLC: I/O up to 4096 points

Very Large: I/O up to 8192 points

Basic PLC Schema

CPU

Power Supply

Memory

Input Blocks

Output Blocks

Communications

Expansion Connections

©snaim 2008

Introduction to OMRON PLC

� Features

� Application

CQM1H Features

CQM1H Features cont…

CQM1H Features cont…

What CQM1H can do?

What CQM1H can do? Cont..

What CQM1H can do? Cont..

What CQM1H can do? Cont..

What CQM1H can do? Cont..

What CQM1H can do? Cont..

PLC hardware component design

2.1.1 Power supply unit

2.1.2 CPU- memory

2.1.3 Input and output units

OMRON CQM1H PLC

CQM1H CPU51

PA206

Power Supply Unit

CPU unit

Input Module

Output module

CQM1H-CPU51 0 CH OC 221

RS-232 PORT

INNERBOARDSLOT 1

INNERBOARDSLOT 2

CPU units

Power supply units

Memory cassette (optional)

Inner Boards

Input Units

Output Units

I/O Expansion units and Dedicated Units

CPU Unit Overview

Basic Specification & Maximum Units

Power Supply Units

� Power Supply Units

I/O expansion units

I/O expansion units cont..

CPU Unit description

1

CPU Unit description cont..

2

3

Memory I/O allocation

Memory I/O allocation cont…

I/O Specification

I/O Specification cont…

I/O Specification cont…

I/O Specification cont…

I/O Specification cont…

I/O Specification cont…