Siemens Simatic S5 IP 240 User manual

SIMATIC S5

IP 240

Counter/Positioning/

Position Decoder Module

Manual

EWA 4NEB 811 6120-02b

Edition 03

Only qualified personnel should install or maintain this equipment after becoming thoroughly familiar

with all warnings, safety notices, and maintenance procedures contained in this manual. The successful

and safe operation of this equipment is dependent upon proper handling, installation, operation, and

maintenance.

The following are definitions of the terms “qualified person,” “danger,” “warning,” and “caution,” as

applicable for this document.

Qualified Person

One who is familiar with the installation,

construction, and operation of this equipment and

the hazards involved. In addition, the person

should have the following qualifications:

• Be trained and authorized to use and tag

circuits and equipment in accordance with

established safety practices

• Be trained in the proper care and use of

protective equipment in accordance with

established safety practices

• Be trained in rendering first aid

Indicates loss of life, severe personal injury, or

substantial property damage will result if

proper precautions are not taken.

Indicates loss of life, severe personal injury, or

substantial property damage can result if

proper precautions are not taken.

Indicates minor personal injury or property

damage can result if proper precautions are not

taken.

CAUTION

WARNING

DANGER

Hazardous voltage.

Can cause death, severe

personal injury, or substantial

property damage.

Restrict use to qualified

personnel.

See safety instructions.

WARNING

STEP 5®and SIMATIC®are registered trademarks of Siemens AG.

First Printing, March 1991

Printed in the Federal Republic of Germany

Siemens has developed this document for its licensees and customers. The information contained herein

is the property of Siemens and may not be copied, used, or disclosed to others without prior written

approval from Siemens. Users are cautioned that the material contained herein is subject to change by

Siemens at any time and without prior notice.

Siemens shall not be responsible for any damages, including consequential damages, caused by reliance

on material presented, including but not limited to typographical, electronic, arithmetic, or listing

errors.

IP 240 Replacement Pages for IP 240 Manual, Edition 3

Supplement to the IP 240 Manual, Order No. 6ES5 998 0TB22, Edition 3

Use of the IP 240 in the S7-400 programmable controller

This manual has been supplemented by Appendices A, B and C. They include information on how

to install S5 modules in an S7-400 programmable controller when using an adapter casing.

Replacement Pages for IP 240 Manual, MLFB 6ES5 998 OTB22, Edition 3

The current manual is valid for the following modules:

• IP 240, MLFB 6ES5 240-1AA21 and

• IP 240, MLFB 6ES5 240-1AA12.

Use with the IP 240, MLFB 6ES5 240-1AA21

The IP 240, MLFB 6ES5 240-1AA21 is a further development of the IP 240, MLFB 6ES5 240-1AA12.

With this MLFB, the module was converted to SMD components as far as possible. The changes to

the module description required as a result of the changes have been included in Edition 3 of this

manual.

The replacement pages at the end of the manual can be ignored in this case.

Use with the IP 240, MLFB 6ES5 240-1AA12

Supplements and changes to the revised module IP 240, MLFB 6ES5 240-1AA21 have been included

in Edition 3 of this manual.

To use this manual with the IP 240, MLFB 6ES5 240-1AA12, you must replace the relevant pages of

the manual with the following pages 2-1 to 2-8, 3-1 to 3-2, 5-1 to 5-4 and 5-7 to 5-8 (at the end of

the manual).

The pages

• for MLFB 6ES5 240-1AA12 have the number 811 6120-01 in the footer

• for MLFB 6ES5 240-1AA21 have the number 811 6120-01a in the footer

EWA 4NEB 811 6120-02c

Preface

Introduction

Addressing

Hardware Installation

Operation

Functional Description

Position Decoding

Counting

IP 252 Expansion

Module Description and Accessories

System Overview

Error Messages

Appendices

Direct Data Interchange with the IP 240

Response Times

Positioning 10

Encoder Signals 13

A/B

Index

EWA4NEB8116120-02b

IP 240 Preface

Preface

In addition to open and closed-loop control, the programmable controllers of the SIMATIC S5 fa-

mily execute special tasks such as positioning and counting. So that these auxiliary functions do

not unnecessarily load the central processor (S5 CPU), they are handled by standalone "intelli-

gent" I/O modules. These have their own microprocessors and execute special time-critical tasks

autonomously.

The two-channel IP 240 module is suitable for the following applications:

•Position decoding

The IP 240 counts and processes pulses from incremental encoders. Cam controllers and limit

switches can be simulated by comparing the actual value with preset tracks.

•Counting

The IP 240 is suitable for gate-controlled counting of rapid pulse trains and for initiating

specific reactions when the count reaches zero.

•IP 252 expansion

The IP 240 operates as a slave for the IP 252 closed-loop control module, thus allowing the

connection of other incremental encoders to the IP 252. The acquired signals are transferred

direct to the IP 252.

•Positioning

The IP 240 enables controlled positioning with cutoff points. As many as 254 positions can be

stored on the IP for this purpose. When a position has been selected, either the direction of

travel or the traversing speed can be specified directly over the IP outputs. The approach is

controlled and monitored via three selectable operating distance ranges. Incremental enco-

ders are used for position sensing.

The module can intervene direct in the process or flag process states over four digital outputs

(two per channel).

The IP 240 has interrupt capability, making it possible to report certain events direct to the S5 CPU.

Standard software function blocks are available for handling the data interchange between the

S5 CPU and the IP 240.

EWA 4NEB 811 6120-02a

IP 240 Introduction

Introduction

The following pages contain information which will help you to use this manual.

Description of Contents

The contents of this manual can be divided into blocks according to topic:

• Module description

• Addressing

• Hardware installation and notes on operation

• Functional description

• Position decoding, counting, IP 252 expansion, positioning

• Direct data interchange with the IP 240

• Response times, encoder signals

• Error messages

At the end of the book you will find correction forms. Please enter any suggestions you may have

in the way of improvements or corrections in this form and send it to us. Your comments will help

us to improve the next edition.

Courses

SIEMENS provide SIMATIC S5 users with extensive opportunities for training.

For more information, please contact your SIEMENS representative.

Reference Literature

This manual is a comprehensive description of the IP 240. Topics not specific to the IP 240,

however, are only briefly dealt with. You will find more detailed information in the following

literature:

•Speicherprogrammierbare Steuerungen SPS (available in German only)

Volume 1: Logic and sequential controls; from the control problem to the control program.

Günter Wellenreuther, Dieter Zastrow

Braunschweig 1987

Contents:

- How a programmable controller works

- The theory of logic control using the STEP 5 programming language for SIMATIC S5 pro-

grammable controllers.

Order No.: ISBN 3-528-04464-0

EWA 4NEB 811 6120-02a

vii

Introduction IP 240

•Automating with the S5-115U

SIMATIC S5 programmable controllers

Hans Berger

Siemens AG, Berlin and Munich 1989

Contents:

- STEP 5 programming language

- Program processing

- Integral blocks

- Interfaces to the peripherals

Order No.: ISBN 3-8009-1526-X

• Automating with the S5-135U

SIMATIC S5 programmable controllers

Hans Berger

Siemens AG, Berlin and Munich 1989

Contents:

- STEP 5 programming language

- Program processing

- Integral blocks

- Interfaces to the peripherals

- Multiprocessor operation

Order No.: ISBN 3-8009-1537-5

• Automating with the SIMATIC S5-155U

SIMATIC S5 programmable controllers

Hans Berger

Siemens AG, Berlin and Munich 1989

Order No.: ISBN 3-8009-1538-3

You can find information on the range of units in the following catalogs:

• ST 52.3 ”S5-115U Programmable Controller”

• ST 57 ”Standard Function Blocks and Drivers for U-Range Programmable Controllers”

• ST 59 ”S5 Programmers”

• ET 1.1 ”ES 902 C Modular Packaging System 19 in. Design”

• MP 11 Thermocouples, Compensating Boxes

There are separate manuals for other components and modules (e.g. CPUs and SINEC L1). We refer

to these information sources at the appropriate points in the text.

viii

EWA 4NEB 811 6120-02a

IP 240 Introduction

Conventions

In order to improve the readability of the manual, a menu-style breakdown was used, i.e.:

• The individual chapters can be quickly located by means of a thumb register.

• There is an overview containing the headings of the individual chapters at the beginning of

the manual.

• Each chapter is preceded by a breakdown of its subject matter.

The individual chapters are subdivided into sections and subsections. Bold face type is used for

further subdivisions.

• Pages, figures and tables are numbered separately in each chapter. The page following the

chapter breakdown contains a list of the figures and tables appearing in that particular

chapter.

Certain conventions were observed when writing the manual. These are explained below.

• A number of abbreviations have been used.

Example: Central processing unit (CPU)

• Footnotes are identified by a superscript consisting of a small digit (e.g. ”1”) or ”*”. The actual

footnote is generally at the bottom of the page or underneath a table.

• Cross-references are shown as follows:

”( Section 7.3.2)” refers to subsection 7.3.2.

No references are made to individual pages.

• Actions required from the user are introduced by the symbol .

• All dimensions in drawings etc. are given in millimetres (mm). This is followed by the value in

inches in parentheses. Example: 187 (7.29).

• Values can be expressed by binary, decimal or hexadecimal numbers. The number system is in-

dicated by a subscript; example: F000H.

• Especially important imformation is written in text boxes. A heading in the upper part of the

text box defines the meaning of the note.

Note

is important imformation on the product, the handling of the product or parts of

documentation that have to be observed very carefully.

Warning

means that loss of life, severe personal injury or substantial property damage can

result if proper precautions are not taken.

EWA 4NEB 811 6120-02a

Introduction IP 240

Manuals can only describe the current version of the programmable controller. Should

modifications or supplements become necessary in the course of time, a supplement will be

prepared and included in the manual the next time it is revised. The relevant version or edition of

the manual appears on the cover. In the event of a revision, the edition number will be

incremented by ”1”.

EWA 4NEB 811 6120-02a

IP 240 Introduction

Conventions

The following conventions are used in this book and are listed for your reference:

Convention Definition Example

A box that indicates a type of hazard,

describes its implications, and tells you

how to avoid the hazard is a cautionary

statement. Some cautionary statements

include a graphic symbol representing

an electrical or radio-frequency hazard.

All cautionary statements have one of

the following levels of caution:

• A danger indicates that loss of

life, severe personal injury, or

substantial property damage

will result if proper precautions

are not taken.

• A warning indicates that loss of

life, severe personal injury, or

substantial property damage

can result if proper precautions

are not taken.

• A caution indicates that minor

personal injury or property

damage can result if proper

precautions are not taken.

GWA 4NEB 811 6120-02a

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