Omron SYSMAC C series User manual

Cat.

No.

W83-E1-5

-|omron|

C20

Programmable

Controller

USER'S

MANUAL

Introduction

Features

This

user's

manual!

provides

all

the

information

you

need

install,

operate,

and

maintain

the

OMRON

SYSMAC-C20

Programmable

Controller,

which

can

used

for

wide

range

industrial

applications.

The

C20

OMRON’s

response

the

demand

for

low-cost,

versatile

industrial

control

system

that

can

quickly

installed

and

easily

operated

technicians

with

little

experience

with

programmable

controllers.

Improved

cost

effectiveness

All

functions

for

small-scale

control

system

are

integrated

single

housing.

The

C20

can

used

the

place

conventional

relay

control

panels

and

ideally

suited

for

economical

control

manufacturing

and

other

applications

which

require

fewer

input/output

control

points.

Slim

profile

for

convenient

mounting

The

C20's

compact

design

allows

installed

locations

where

space

premium.

Hardly

larger

than

standard

text

book,

the

C20

can

easily

mounted

either

horizontally

vertically

near

the

machinery

operates.

Choice

memory

chips

Either

RAM

EPROM

memory

chips

can

installed

the

C20.

RAM

offers

the

convenience

read/write

memory

for

control

programs

that

are

under

development

subject

modification;

EPROM

chips

can

used

for

“permanent”

storage

for

rarely

changed

programs

when

multiple

copies

are

needed

for

programs.

Optional

optical-fiber

communication

with

the

other

models

the

SYSMAC

C-Series

programmable

controllers,

I/O

linkage

can

accomplished

using

remote

I/O

master

unit

and

optical-fiber

cables.

This

state-of-the-art

technology

enables

noise-free

communications

over

long

distances

ultra-high

speeds.

Detachable

terminal

block

easily

removable

terminal

block

greatly

facilitates

wiring

the

I/O

lines

and

makes

maintenance

convenient.

Upwardly

compatible

peripheral

devices

The

programming

console,

printer

interface

unit,

and

PROM

writer

can

shared

with

all

programmable

controllers

the

SYSMAC

C-Series.

Moreover,

with

the

addition

peripheral

interface,

possible

program

and

operate

the

through

portable

graphic

programming

console

(either

LCD

CRT)

well

multisupport

base

unit.

Introduction

About

this

manual

This

manual

was

designed,

written,

and

illustrated

highly

useful

people

ali

levels

understanding

and

experience

with

program-

mable

controllers,

including

the

first-time

user.

has

also

been

organized

and

indexed

allow

easy

access

specific

information.

The

only

special

knowledge

you

need

understanding

ladder

diagrams

using

the

familiar

symbols

adopted

for

conventional

relay-

based

industrial

systems.

Here's

what

you

will

find

the

following

chapters

and

appendixes:

Chapter

Programmable

controllers

general

and

the

C20

particular

are

introduced.

Each

part

the

C20

illustrated

and

explained,

and

different

system

configurations

are

presented.

Chapter

What

you

need

know

install

the

C20

explained,

including

important

environmental,

wiring,

mounting,

and

power

supply

considerations.

Chapter

You're

introduced

programming

and

the

eight

steps

used

create

control

program.

This

chapter

focuses

the

first

three

—

assessing

the

controlied

operation,

assigning

input/output

points,

and

writing

relay

ladder

diagrams.

Chapters

and5

These

two

chapters

cover

using

the

programming

console

write

your

application

program

and

put

work

controlling

your

equipment

process

through

the

C20.

Chapter

Examples

are

given

which

show

you

simplified

form

some

the

numerous

control

applications

that

can

realized

the

C20.

Appendixes

The

many

peripheral

devices

available

expand

the

C20

system

and

provide

valuable

support

services

are

introduced.

Also

covered

are

the

basic

and

special

instructions

used

programming,

well

product

specifications

and

other

detailed

technical

information.

comprehensive

index

included

for

easy

reference

this

manual.

Contents

Chapter

Introduction

the

C20

1-1

Overview

4-1

Basics

1-1

input/output

section

1-2

Central

processing

unit

1-2

Programming

device

1-2

About

the

SYSMAC-C20

1-2

€20

Components

1-2

CPU

1-4

Programming

console

1-5

Basic

system

configuration

Chapter

Installing

the

C20

2-1

Overview

2-1

But

first...

2-1

Static

electricity

2-1

Memory

chips

2-2

Installing

memory

chips

2-3

Testing

the

environment

2-3

Dealing

with

problems

noise

2-3

Control

panel

wiring

2-3

External

wiring

2-4

Noise-suppression

measures

2-4

Power

supply

2-4

Grounding

2-5

Control

panel

mounting

2-5

Mounting

dimensions

2-6

Power

supply

2-6

Grounding

2-7

Battery

2-7

Protections

against

power

failure

Chapter

Introduction

programming

3-1

Overview

3-1

Relay

ladder

diagram

method

3-1

Eight

basic

programming

steps

3-2

Step

1—Assessing

the

controlled

operation

3-2

input/output

requirements

3-2

Sequence,

timing,

and

relationship

assessment

3-3

Step

2—Assigning

I/Os

3-3

Points

and

channels

3-3

I/O

channe!

assignment

3-3

Assigning

internal

auxiliary

relays

3-4

Assigning

numbers

timers

and

counters

3-4

Step

3—Writing

relay

ladder

diagram

3-5

Step

4—Turning

the

ladder

diagram

into

code

3-6

Sample

program

for

coding

practice

Contents

Chapter

Using

the

programming

console

4-1

Overview

4-1

The

keyboard

4-1

Numeric

keys

4-1

CLR

key

4-2

Operation

keys

4-2

Instruction

keys

4-3

Made

switch

4-3

Console

display

4-4

PROGRAM

mode

4-4

erase

existing

memory

4-5

Getting

started,

summarized

4-5

Exampie

program

4-6

Step

5—Entering

the

program

the

CPU

4-9

Deleting

instructions

4-9

Inserting

instructions

Chapter

Checking

and

running

your

program

5-1

Overview

5-1

Step

6—Editing

the

program

5-1

Quick-search

editing

functions

5-1

Going

directly

known

address

5-2

Searching

for

specific

instruction

5-3

END

INSTRUCTION

message

5-3

Searching

relay

contacts

5-4

function

summary

5-4

Address

5-4

Specific

instruction

5-4

Specific

contact

5-5

Step

7—Testing

for

errors

5-5

Status

check

5-5

Forced

set/reset

5-6

Forced

relay

set

5-6

Forced

relay

reset

5-7

Forced

timer

set

5-7

Changing

set

value

timer

counter

5-8

Input/Output

monitor

5-9

Rapid

check

counter/timer

values

5-9

Rapid

check

relay

status

5-10

Step

8—Saving

your

program

cassette

tape

5-12

and

verifying

the

program

5-12

Verifying

the

program

Chapter

Application

examples

6-1~

Overview

6-1

Automatic

control

warehouse

door

6-3

Automatic

lubricating

oil

supplier

6-4

Conveyor

belt

motor

control

6-6

Automatic

car

washing

machine

6-7

Bottle

label

detection

Contents

Appendix

System

expansion

and

peripherals

A-1

Overview

A-2

Expansion

1/0

unit

A-3

1/0

link

unit

A-5

1/0

link

unit

wiring

A-6

Channel

and

end

station

setting

A-14

PROM

writer

A-14

Graphic

programming

console

A-17

Multisupport

base

A-18

Printer

interface

unit

A-19

Link

adapter

Instruction

words

B-1

Overview

B-10

Special

Instructions

Scan

time

C-1

Overview

C-3

Listof

instruction

execution

times

C-4

Sean

time

calculation

examples

Assignment

1/0

channel

and

relay

numbers

D-1

1/0

channel

assignment

D-1

Relay

assignment

Maintenance

and

troubleshooting

E-1

Overview

E-1

Inspection

E-4

Troubleshooting

Specifications

F-{

Overview

F-1

Available

types

F-3

Ratings

F-3

Characteristics

F-5

Input/Output

specifications

F-19

Sink

unit

F-20

Dimensions

Mounting

kit

G-1

Overview

List

instructions

H-1

Basic

instruction

H-2

Applied

instructions

Chapter

Introduction

the

C20

Overview

Basics

This

introductory

chapter

explains

why

programmable

controllers

have

become

such

valuable

part

modernfactories.

The

SYSMAC-C20

described,

including

its

basic

components

and

operating

principles.

Programmable

controllers,

PCs,

evolved

industries

sought

econo-

mical

ways

automate

their

production

lines,

particularly

those

involved

the

manufacturing

equipment

and

other

heavy

industry

products.

The

PCs

took

the

place

relay-based

control

systems

which

were

comparatively

slower,

less

reliable,

and

which

presented

formidable

wiring

and

maintenance

requirements.

PCs

operate

monitoring

input

signals

from

such

sources

pushbut-

tons,

sensors,

and

limit

switches.

When

changes

are

detected

the

signais,

the

controller

system

reacts,

through

user-programmed

internal

logic,

produce

output

signals.

These

signals

operate

the

external

loads

the

controlled

system,

such

relays,

motor

controls,

indicator

lights,

and

ajarms.

This

type

control

system

eliminates

much

the

wiring

and

rewiring

that

was

necessary

with

the

conventional

relay-based

system.

Instead,

the

programmed

logic

provides

the

“wiring

network”

which

can

changed

required

simply

reprogramming

the

PC.

Thus

the

automated

processes

production

line

can

controlled

and

modified

will,

for

highly

economical

adaptability

changing

manufacturing

environ-

ment.

Atypical

programmable

controller

has

three

basic

components—an

input/output

section,

central

processing

unit

(CPU),

and

programming

device.

Input/output

section

This

section

consists

wiring

and

interfacing

relays

that

connect

the

equipment

being

controlled.

Central

processing

unit

The

CPU

contains

the

control

circuitry

well

the

memory

that

stores

the

contro!

plan

that

guides

equipment

operation.

the

heart

the

and

organizes

ail

controller

activity

scanning

the

control

plan

along

with

the

status

the

inputs

and

executes

specified

commands

specified

outputs.

Introduction

the

C20

About

the

SYSMAC-C20

C20

Components

CPU

Programming

device

This

device

used

enter

the

control

plan

into

the

CPU's

memory.

operator

keys

the

instructions

used

sequentially

contro!

the

application

process.

There

are

several

programming

methods;

the

case

the

SYSMAC

C-Series,

relay

ladder

diagram

prog

ramming

used

because

plant

personnel

are

familiar

with

that

format

and

provides

for

convenient

record-keeping.

The

C20

comes

two

versions,

basic

unit

and

expandable

unit.

The

capabilities

the

basic

unit

include

1194

program

statements,

I/O

points,

and

136

internai

auxiliary

relays.

The

expandable

unit

functionally

identicai

the

basic

unit

except

that

can

expanded

using

expansion

units

include

140

I/O

points.

The

C20

offers

the

flexibility

either

RAM-

EPROM-based

operation.

When

RAM

chip

installed

the

memory,

programs

written

the

user

can

modified

and

rewritten.

EPROM

provides

semi-permanent

storage

for

completed

programs.

The

programming

console

can

detached

and

upwardly

compatible

with

the

full

line

SYSMAC

C-Series

programmabie

controllers.

Due

its

compact

design,

the

C20

incorporates

the

detachable

I/O

terminals

and

microprocessor

functions

single

housing

called

the

CPU.

The

detachable

programming

console

functions

the

program-

ming

device.

Additionally,

various

optional

peripheral

devices

are

available

support

system

expansion.

The

two

main

components

are

explained

and

illustrated

the

several

pages.

Central

processing

unit

The

CPU

the

main

enclosure

the

C20

incorporating

the

micro-

processor

and

I/O

terminals.

The

controlling

program

written

using

programming

device

stored

and

executed

the

CPU.

Console

screws

These

stud

screws

are

removed

with

flat-bladed

screwdriver

open

the

cover

for

initial

setting

and

maintenance

purposes.

Input

terminals

These

terminals

are

used

connect

the

wiring

carrying

input

signals

from

the

devices

the

controlled

system.

Input/output

indicators

These

LEDs

show

the

state

the

signals

(by

turning

red

when

and

dark

when

OFF)

for

each

the

input

and

output

terminals.

LED

indicators

(POWER,

RUN,

ERROR/ALARM)

These

LEDs

light

show

the

state

the

main

power

supply

(ON/OFF),

when

the

C20

the

RUN

mode,

and

any

error

has

occurred.

Power

terminals

These

terminals

connect

the

power

source

and

are

grounded

resistance

less

than

100Q.

Output

terminals

These

terminals

are

used

connect

the

wiring

carrying

output

signals

from

the

CPU

the

output

devices.

Connector

for

expansion

1/0

units

This

available

only

the

expandable

type

CPU

and

used

connect

expansion

I/O

units

increase

the

number

I/O

points.

Connector

for

peripheral

devices

This

connects

the

programming

console

another

peripheral

device.

Introduction

the

C20

Programming

console

This

the

standard

programming

device

used

with

the

C20.

The

control

programs

written

the

programming

console

are

stored

and

run

the

CPU.

PROIS

PROGRAMMING

CONSOLE

Mounting

screws

These

two

screws

secure

the

detachable

programming

console

the

CPU.

LCD

This

displays

the

program

being

written

and

used

for

checking

and

monitoring

program

operation.

also

displays

error

messages.

Contrast

control

The

contrast

control

adjusts

contrast

level

display.

Keypad

The

color-coded

keypad

functionally

divided

into

the

following

areas:

White

keys

used

input

program

addresses,

timing

values,

and

other

types

numeric

entry

Red

One

key

used

clear

the

display

Yellow

keys

used

provide

editing

functions

while

writing

and

correcting

the

control

program

Gray

keys

used

input

instruction

words

used

the

program

The

function

each

key

detailed

Chapter

Mode

selector

switch

This

three-position

switch

selects

one

three

operation

modes

the

PC:

program,

monitor,

and

run.

These

modes

are

explained

detail

Chapters

and

Jacks

for

connecting

cassette

tape

recorder

Programs

may

saved

standard

cassette

tape

recorder

connected

the

output

(MIC)

jack.

Previously

written

programs

can

also

supplied

the

CPU

via

the

input

(EAR)

jack.

These

operations

are

explained

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