欧姆龙PLC操作手册_c20p_c28p_c40p_c60p(2)

TABLE OF CONTENTS

SECTION 1

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

System Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 2

System Installation and Wiring. . . . . . . . . . . . . . . . . . . . .

2-1General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2Installation Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3Dimensions and Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4I/O Connecting Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5Wiring CPUs and Expansion I/O Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6I/O Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7Special Wiring Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Switch Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 3

Maintenance and Inspection. . . . . . . . . . . . . . . . . . . . . . .

3-1General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2Self-diagnostic Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3Replacing Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4Preventive Measures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Appendices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A.Standard Models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B.Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C.Programming Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D.

Programming Console Operations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

27

13

1414162124274446

51

5252535659

61

61677379

8789

vii

About this Manual:

This manual has been prepared to provide the information necessary to install, set up, and maintainyour C-series P-type Programmable Controller, a low-cost, compact, versatile industrial control sys-tem providing up to 148 I/O points. For information regarding system programming and operation,refer to the Operation Manual.

Analog I/O Units are also not described in detail in this manual because a separate manual is pro-vided for them (SYSMAC K-type Analog I/O Units Operation Guide, Cat.No. W122)

Section 1 describes the basic Units that can be used to build a K-type PC, explains how the Unitscan be combined, and provides example system configurations.

Section 2 covers actual system installation and wiring, including switch settings.Section 3 provides information on maintaining your PC in good working condition.

WARNINGFailure to read and understand the information provided in this manual may result in

personal injury or death, damage to the product, or product failure. Please read eachsection in its entirety and be sure you understand the information provided in the sectionand related sections before attempting any of the procedures or operations given.

ix

SECTION 1Introduction

1-1

Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1-1CPUs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1-2Expansion I/O Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1-3Analog Timer Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1-4I/O Link Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . System Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

223567

1-2

1

NomenclatureSection 1-1

1-1Nomenclature

1-1-1CPUs

EPROM socket,DIP switch

High-speed Counter

Indicators

Memory

2

This section gives the names and functions of the various components ofP-type PCs and the basic Units with which they can be combined in aSystem.

In the diagram below, the C28P is shown as a representative model. Refer toAppendix A Standard Models for your model’s exact specifications.

Power supplyGround

Outputs

Indicators

CPU,

Expansion I/OUnit, AnalogTimer Unit,Analog I/OUnit, or I/OLink Unitconnector

High-speed counterInputs24-VDC output(HDM(98)–) inputs

Peripheral connector

When the high-speed counter (HDM(98)) is not being used, the two

high-speed counter input terminals can be used as normal DC input termi-nals. Their ON/OFF response time, however, will be shorter (0.15 ms max.).Regardless of whether or not the high-speed counter command is beingused, DIP switch pins 7 and 8 must be off whenever the hardware reset isnot being used.

The diagram below shows the functions of the various indicators, taking theC20P as an example.

OUTPUT 5 CH

0 1 2 3 4 5 6 7OUTPUT: Shows whether the output is ON or OFF.POWER: Stays lit while power is turned on to thePC.

RUN: Stays lit while the PC is operating normally.

POWERRUNALARM: Blinks during battery abnormality or scantime overrun. At this time PC operation will be ALARMintermittent.

ERRORERROR: Lights when self-diagnosis detects anINPUT 0 CH

abnormality. The PC will stop operating.0 1 2 3 4 5 6 7INPUT: Shows whether the input is ON or OFF.

8 9 10 11Each of the C-series P-type PCs is provided with a built-in RAM (random-ac-cess memory), as well as a ROM (read-only memory) chip socket. Eithermay be used with ease. It is recommended to use the RAM for programmingand, when the program is completed, to save it in a ROM chip for protection.The memory capacity in either case is 1,194 addresses.

Nomenclature

ROM Socket and DIPSwitch

Section 1-1

Beneath the cover are the DIP switch and the socket where an EPROM chipmay be installed. For details, see 2-8-1 Setting the CPU DIP Switch and2-8-2 EPROM Installation. Only DIP switch pins 1 and 2 are on when theCPU is delivered.

ROM socket87654, 32, 1Turn ON to use hardware reset (0001).Turn OFF if FUN 61 is not used.Turn ON for English display.Turn ON to inhibit ALARM indicator.ROM: ON (RAM: OFF)RAM: ON (ROM: OFF)CAUTION: In case of battery failure, data stored in

the RAM, the DM area, the HR area, etc., will not be preserved.

1-1-2Expansion I/O Units

In the diagram below, the C20P is shown as a representative model. Refer toAppendix A Standard Models for your model’s exact specifications.

Power supplyGround

Outputs

Indicators

CPU,

ExpansionI/O Unit, or I/O Link Unitconnector

CPU,

ExpansionI/O Unit,

Analog TimerUnit, AnalogI/O Unit, or I/O Link Unitconnector

CPU left/rightselector

Inputs24-VDC output

3

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