Siemens DP-ASi User Manual

Preface, Contents

SIMATIC

Distributed I/O System
DP/ASi Link

Manual

Overview

ASi Basics

Configuration Options

Installing and Wiring DP/ASi Link

Configuring the DP/ASi Link

DP/ASi Link to S7

Operating Modes

Diagnostics and Error Handling

Appendices

1
2
3
4
5
6
7
8

EWA 4NEB 710 6055-02b

Edition 3

Technical Data

I/O Code

Parameterization Message

Configuration Message

Glossary, Index

A
B
C
D

Safety Guidelines

!

!

!

This manual contains notices which you should observe to ensure your own personal safety, as
well as to protect the product and connected equipment. These notices are highlighted in the
manual by a warning triangle and are marked as follows according to the level of danger:

Danger

indicates that death, severe personal injury or substantial property damage will result if proper
precautions are not taken.

Warning

indicates that death, severe personal injury or substantial property damage can result if proper
precautions are not taken.

Caution

indicates that minor personal injury or property damage can result if proper precautions are not taken.

Note

draws your attention to particularly important information on the product, handling the product, or
to a particular part of the documentation.

Qualified Personnel

Correct Usage

!

Trademarks

The reproduction, transmission or use of this document or its
contents is not permitted without express written authority.
Offenders will be liable for damages. All rights, including rights
created by patent grant or registration of a utility model or design, are
reserved.

Siemens AG
Automation Group
Industrial Automation Systems
P.O. Box 4848, D-90327 Nuremberg

The device/system may only be set up and operated in conjunction with this manual.
Only qualified personnel should be allowed to install and work on this equipment. Qualified

persons are defined as persons who are authorized to commission, to ground, and to tag circuits,
equipment, and systems in accordance with established safety practices and standards.

Note the following:

Warning

This device and its components may only be used for the applications described in the catalog or the
technical description, and only in connection with devices or components from other manufacturers
which have been approved or recommended by Siemens.

This product can only function correctly and safely if it is transported, stored, set up, and installed
correctly, and operated and maintained as recommended.

SIMATIC and SIMATIC NET are registered trademarks of SIEMENS AG.
Some of the other designations used in these documents are also registered trademarks; the own-

er’s rights may be violated if they are used be third parties for their own purposes.

Disclaimer of LiabilityCopyright  Siemens AG 1995 All rights reserved
We have checked the contents of this manual for agreement with the

hardware and software described. Since deviations cannot be pre­cluded entirely, we cannot guarantee full agreement. However , the
data in this manual are reviewed regularly and any necessary cor­rections included in subsequent editions. Suggestions for improve­ment are welcomed.

Technical data subject to change.
 Siemens AG 1995

Siemens Aktiengesellschaft Order No. 6ES7 156-0AA00-8BA0

Distributed I/O System DP/ASi Link

Preface

03

Purpose of manual

Manual contents

Applicability

The information contained in this manual will enable you to:

 install an Actuator Sensor Interface (ASi)
 commission the DP/ASi link

The scope of delivery of MLFB 6ES7 156-0AA00-8AA0 consists of the
manual:

Distributed I/O System

DP/ASi Link, Edition 3

 installing and wiring the distributed I/O system DP/ASi link
 configuring the DP/ASi link
 diagnostics and error handling
 technical data

The present manual is valid for:

6ES7 156-0AA00-0XA0 03
6ES7 156-0AA01-0XA0 01

The present manual contains a description of all the functions incorporated in
the DP/ASi link at the time this manual was published. We reserve the right
to describe modified functions in a Product Information.

Distributed I/O System DP/ASi Link
EWA 4NEB 710 6055-02b

Order No.

DP/ASi Link

Release (or Later)

DP/ASi Link

Manual

Edition

iii

Preface

Changes from
previous edition

Compared to the previous edition of this manual, Distributed I/O System DP/
ASi Link having the Order No. 6ES7 156-0AA00-8AA0, Edition 2, the fol-

lowing changes have been incorporated:

 DP/ASi link to S7
 diagnostics during operation with an S7/M7 DP master

The DP/ASi link meets the requirements and criteria of the following stan-

Standards and
approvals

dards and approvals:

 IEC 1131, Part 2
 EN 50170 Volume 2, PROFIBUS
 ASi: Actuator Sensor Interface Complete Specification
 CE mark requirements
 CSA, UL and FM approvals

You will find complete details of approvals and standards in appendix A.1.

How this manual
fits in

This manual, DP/ASi Link, describes the DP/ASi link and the installation of
the ASi.

The description of the PROFIBUS-DP and a master interface such as
IM 308-C do not form a part of this manual. You will find further information
on these subjects in the manual called Distributed I/O System ET 200, Order
No. 6ES5 998-3ES12.

CD-ROM

Aids to accessing
the manual

The Distributed I/O System DP/ASi Link can be acquired on a CD-ROM as
an electronic manual.

You can quickly access specific information in the manual using the follow­ing access aids:

 At the beginning of the manual, you will find a complete list of manual

contents and lists of illustrations and tables contained in the whole docu­ment.

 Within the chapters, you will find information in the left-hand margin

giving you an overview of the subject that is dealt with.

 Following the appendices, there is a glossary in which technical terms

used in the manual are defined.

 At the end of the manual, you will find a comprehensive index enabling

rapid access to the information you require.

iv

Distributed I/O System DP/ASi Link

EWA 4NEB 710 6055-02b

Preface

Further support

Should you have any technical queries, please contact your Siemens repre­sentative at the agents or branch office responsible. You will find the address
in the manuals describing the DP masters – for example, in the appendix
“Siemens Worldwide” to the S7-300 Programmable Controller; Hardware
and Installation manual, in catalogs and on CompuServe (GO AUTFORUM).
In addition, you can contact our hotline by calling [phone] (Fax

7001).
Should you require the type file or the GSD file, you can download them

over your modem by dialing [phone].
In the event of queries or remarks concerning the manual itself, please com-

plete the Remarks Form at the end of the manual and return it to the address
specified. We would kindly ask you to enter your own personal assessment of
the manual on the Remarks Form.

T o help you get started with the distributed I/O system ET 200, we hold a
”KO-ET 200” workshop. If you are interested in attending the workshop,
please contact your next area training center or the principal training center
in Nuremberg, Germany, by dialing [phone].

Distributed I/O System DP/ASi Link
EWA 4NEB 710 6055-02b

v

Preface

vi

Distributed I/O System DP/ASi Link

EWA 4NEB 710 6055-02b

Contents

Preface

1 Overview

1.1 Using the DP/ASi Link 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 What is the DP/ASi Link? 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 View of the DP/ASi Link 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 ASi Basics

2.1 Structure of ASi 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2 Elements of ASi 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.3 Example Configuration of a Module 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.4 Connecting Elements 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.5 Interruption or Short-Circuit of the ASi cable 2-7. . . . . . . . . . . . . . . . . . . . . . . . .

3 Configuration Options

3.1 Summary of Configuration Options 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2 Configuration without T Connector and with Power Supply Connector 3-3. . .

3.3 Configuration with T Connector and with Power Supply Connector 3-4. . . . .

3.4 Configuration with Several Power Supply Connectors 3-6. . . . . . . . . . . . . . . . .

3.5 Configuration without Power Supply Connector 3-7. . . . . . . . . . . . . . . . . . . . . .

3.6 Configuration with Programmer Connector 3-9. . . . . . . . . . . . . . . . . . . . . . . . . .

4 Installing and Wiring the DP/ASi Link

4.1 Installation 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.2 Electrical Wiring of DP/ASi Link 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.2.1 Grounded Installation 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.2.2 Ungrounded Installation 4-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.2.3 Connecting the DP/ASi Link to ASi and PROFIBUS-DP 4-8. . . . . . . . . . . . . . .

4.3 Commissioning 4-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.3.1 Selecting the Station Number for PROFIBUS-DP 4-11. . . . . . . . . . . . . . . . . . . . .

4.3.2 Setting a Station Number on the DIP Switch Block 4-12. . . . . . . . . . . . . . . . . . . .

4.3.3 Station Number in EEPROM 4-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Distributed I/O System DP/ASi Link
EWA 4NEB 710 6055-02b

vii

Contents

4.4 Additional Components for PROFIBUS-DP 4-15. . . . . . . . . . . . . . . . . . . . . . . . . .

4.4.1 T Connector (6ES5 762-2CT11) 4-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.4.2 Power Supply Connector (6ES5 762-2CS11) 4-17. . . . . . . . . . . . . . . . . . . . . . . .

4.4.3 Programmer Connector (6ES5 762-2CA12) 4-18. . . . . . . . . . . . . . . . . . . . . . . . .

4.4.4 Cables 4-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.4.5 Terminating Resistor (6ES5 755-2CA11) 4-21. . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.4.6 Adapter Cable (6ES5 755-8CA11) 4-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.4.7 Wiring of PROFIBUS-DP 4-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 Configuring the DP/ASi Link

5.1 Configuring – for Example with COM ET 200 Windows

(Version 2.0 or Later) 5-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.2 Example Using COM ET 200 Windows (Version 2.0 or Later) 5-5. . . . . . . . . .

5.3 Operating the DP/ASi Link with an External Master 5-6. . . . . . . . . . . . . . . . . . .

5.3.1 Configuring with Address Space Optimization 5-7. . . . . . . . . . . . . . . . . . . . . . . .

5.3.2 Simple Configuration 5-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.3.3 Default Start–Up 5-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 DP/ASi Link to S7

6.1 Reading Data Records with SFC 59 ”RD_REC” 6-3. . . . . . . . . . . . . . . . . . . . . .

6.2 Writing Data Records with SFC 58 “WR_REC” 6-6. . . . . . . . . . . . . . . . . . . . . . .

6.3 Example of Re-assigning Parameters to an ASi Slave with S7 6-7. . . . . . . . .

7 Operating Modes

7.1 Automatic Start-up of DP/ASi Link 7-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.2 Normal Operation 7-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.3 Automatic Programming 7-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8 Diagnostics and Error handling

8.1 Diagnostics by Means of LEDs of DP/ASi Link 8-2. . . . . . . . . . . . . . . . . . . . . . .

8.2 Diagnostics by Means of User Program 8-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8.2.1 Diagnostic Fundamentals in Operations with an IM308C 8-7. . . . . . . . . . . . . .

8.2.2 Diagnostic Fundamentals in Operations with an S7/M7 DP Master

(STEP 7) or with Another PROFIBUS-DP Master 8-9. . . . . . . . . . . . . . . . . . . . .

8.2.3 Structure of Diagnosis 8-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8.2.4 Contents of DP Standard Part 8-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8.2.5 Module and First Station Diagnoses for the IM308C 8-14. . . . . . . . . . . . . . . . . .

8.2.6 Module and First Station Diagnoses for the S7/M7 DP Master 8-16. . . . . . . . .

8.2.7 Second Station Diagnosis for the IM308C 8-18. . . . . . . . . . . . . . . . . . . . . . . . . . .

8.2.8 Second Station Diagnosis for the S7/ M7 DP Master 8-20. . . . . . . . . . . . . . . . . .

8.2.9 Diagnostics for a Default Start-Up with the IM308C

(6ES7 156 0AA00-0XA0 or higher, Issue 3) 8-21. . . . . . . . . . . . . . . . . . . . . . . . . .

viii

Distributed I/O System DP/ASi Link

EWA 4NEB 710 6055-02b

A Technical Data

A.1 Standards and Approvals A-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A.2 General Technical Data A-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

B I/O Code
C Parameterization Message

C.1 Structure of the Parameterization Message in Configuring with Address

Optimization C-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C.2 Parameterization Data for ASi Slaves C-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C.3 Optimizing Address Assignment C-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C.4 Structure of the Parameterization Message in Simple Configuration C-10. . . .

D Configuration Message

D.1 Structure of the Configuration Message with a Default Start-Up D-2. . . . . . . .

D.2 Structure of the Configuration Message with a Default Start-Up D-3. . . . . . . .

D.3 Structure of the Configuration Message in Simple Configuration D-7. . . . . . . .

Contents

Glossary
Index

Distributed I/O System DP/ASi Link
EWA 4NEB 710 6055-02b

ix

Contents

Figures

1-1 Integrating the DP/ASi link 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2 Components 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-3 View of DP/ASi link 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1 Example installation of an ASi 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-2 View of module, example of an upper part and a lower part 2-5. . . . . . . . . . . .

3-1 Legend 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-2 PROFIBUS-DP and power supply looped through on DP/ASi link 3-3. . . . . . .

3-3 PROFIBUS-DP and power supply looped through by means of T

connector 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-4 Rule for installation with a T connector 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-5 Configuration with several power supply connectors 3-6. . . . . . . . . . . . . . . . . .

3-6 PROFIBUS-DP looped through T connectors –

external power supply fed separately to every slave station 3-7. . . . . . . . . . . .

3-7 Rule for installation with a T connector 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-8 Configuration with programmer connector 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . .

4-1 Grounded installation of DP/ASi link 4-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-2 Ungrounded installation of DP/ASi link 4-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-3 Location of DIP switch block 4-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-4 T connector 4-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-5 Terminating resistor 4-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-6 Adapter cable 4-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-1 Location of LEDs of DP/ASi link 8-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A-1 DP/ASi link; dimension drawing A-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C-1 Sorting ASi slaves into address space template C-9. . . . . . . . . . . . . . . . . . . . . .

x

Distributed I/O System DP/ASi Link

EWA 4NEB 710 6055-02b

T ables

1-1 Length of the PROFIBUS bus cable as a function of the baud rate on the

PROFIBUS DP bus 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-1 Configuration options 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-2 Length of bus cable when PROFIBUS-DP and power supply

are fed on the same bus cable 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-3 Length of the spur line of the programmer connection as a function of the

baud rate on the PROFIBUS-DP bus 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-1 Spacing between DP/ASi link and cable duct 4-2. . . . . . . . . . . . . . . . . . . . . . . .

4-2 Pin assignment of ASi terminal connection 4-8. . . . . . . . . . . . . . . . . . . . . . . . . .

4-3 Pin assignment of 12-pin device connector 4-9. . . . . . . . . . . . . . . . . . . . . . . . .

4-4 Station number selection on DIP switch block 4-11. . . . . . . . . . . . . . . . . . . . . . .

4-5 PROFIBUS-DP cables 4-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-6 Order Numbers for cables in standard lengths

(core cross-section 0.75 mm

2

, maximum current loading 4 A) 4-20. . . . . . . . . .

4-7 Order Numbers for cables having a Z number

(core cross-section 0.75 mm

2

, maximum current loading 4 A) 4-20. . . . . . . . . .

4-8 Order Number for circular connector 4-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1 Assigning the slave to the ASi address, an example 5-5. . . . . . . . . . . . . . . . . .

5-2 I/O Area Assignment 5-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-1 Parameters for SFC 59 “RD_REC” 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-2 Parameters for SFC 58 “WR_REC” 6-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-3 Structure of data record 140: Read lists and flags 6-3. . . . . . . . . . . . . . . . . . . .

6-4 Structure of data record 141: Read parameter echoes of ASi slaves 6-4. . . .

6-5 Structure of data record 2: Read response 6-5. . . . . . . . . . . . . . . . . . . . . . . . . .

6-6 Error codes in byte 1 of data record 2 6-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-7 Structure of data record 142: Write parameters to ASi slaves 6-6. . . . . . . . . .

6-8 Structure of data record 143: Modify operating address of ASi slave 6-6. . . .

6-9 Srtructure of data record 144: Set DP/ASi link to “Offline” mode 6-6. . . . . . . .

8-1 Meanings of display LEDs 8-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-2 LED display for modes and bus faults on PROFIBUS-DP 8-3. . . . . . . . . . . . .

8-3 LED display for faults on ASi side 8-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-4 Combination of several LEDs 8-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-5 Parameters for SFC 13 “DPNRM_DG” 8-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-6 Structure of diagnostic message 8-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-7 Diagnostic message structure for the S7/M7 DP master 8-11. . . . . . . . . . . . . .

8-8 Structure of station status 1 8-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-9 Structure of station status 2 8-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-10 Structure of bytes 6 to 11 of diagnostic message 8-14. . . . . . . . . . . . . . . . . . . . .

8-11 Structure of diagnosis, bytes 12 to 15 8-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-12 Structure of bytes 6 to 12 of diagnostic message for operations with

IM308C 8-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-13 Structure of diagnosis, bytes 13 to 16 8-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-14 Structure of bytes 16 to 19 in diagnostic message 8-18. . . . . . . . . . . . . . . . . . .

8-15 Structure of diagnostic data, bytes 20 and 21 8-18. . . . . . . . . . . . . . . . . . . . . . .

8-16 Assignment of ASi address to bit positions, bytes 22 to 25 8-19. . . . . . . . . . . . .

Contents

Distributed I/O System DP/ASi Link
EWA 4NEB 710 6055-02b

xi

Contents

8-17 Structure of bytes 17 to 19 in diagnostic message 8-20. . . . . . . . . . . . . . . . . . .

8-18 Assignment of the ASi address to bit positions, bytes 20 to 23 8-20. . . . . . . . .

8-19 Basic structure of diagnostic message 8-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-20 Indication of failed ASi slaves 8-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-21 Actual ASi configuration 8-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

B-1 I/O code of ASi slaves B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C-1 Structure of the DP standard part in parameterization message C-2. . . . . . . .

C-2 Structure of station status in parameterization message C-3. . . . . . . . . . . . . .

C-3 Structure of byte 7 for initialization C-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C-4 Default values of bytes 8 to 14 for initialization C-4. . . . . . . . . . . . . . . . . . . . . .

C-5 Value of control byte (byte 15) C-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C-6 Parameterization data for an ASi slave C-6. . . . . . . . . . . . . . . . . . . . . . . . . . . .

C-7 Assignment of parameterization data of ASi slaves to byte numbers of

parameterization message C-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C-8 Assigning the DP standard part C-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C-9 Default values of bytes 8 to 14 for initialization C-10. . . . . . . . . . . . . . . . . . . . . . .

C-10 Definition of response when setpoint and actual configurations differ C-10. . . .

C-11 I/O code of configured ASi slaves C-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

D-1 Configuration message structure for a default start-up D-2. . . . . . . . . . . . . . . .

D-2 Default assignment of bytes 0 to 14 of the configuration message,

shown in hexadecimal numbers D-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

D-3 Value of identification byte in configuration message D-4. . . . . . . . . . . . . . . . .

D-4 Value of the I/O length byte in configuration message D-4. . . . . . . . . . . . . . . .

D-5 Configuration message for masters with reduced parameter assignment D-7

D-6 IDs for the variable part of the configuration message D-7. . . . . . . . . . . . . . . . .

xii

Distributed I/O System DP/ASi Link

EWA 4NEB 710 6055-02b

Overview

1

Introduction

Devices and mod­ules

In this chapter

You use the DP/ASi link to interface the Actuator Sensor Interface to the
PROFIBUS-DP.

The DP/ASi link operates as a DP slave and requires a DP master – for exam­ple, an IM 308-C.

In Section You Will Find on Page

1.1 Using the DP/ASi Link 1-2

1.2 What is the DP/ASi Link? 1-3

1.3 View of the DP/ASi Link 1-5

Distributed I/O System DP/ASi Link
EWA 4NEB 710 6055-02b

1-1

Overview

1.1 Using the DP/ASi Link

Definition

ASi and PROFI­BUS-DP

The DP/ASi link connects the Actuator Sensor Interface (referred to in the
following as ASi) to the PROFIBUS-DP.

PROFIBUS-DP conforms to the PROFIBUS-DP standard EN 50170 Vol­ume 2, PROFIBUS; the term DP means ”distributed I/O”.

You will find an explanation of how the ASi works in Chapter 2.

Higher level

slave

DP

DP master

PROFIBUS-DP

DP/ASi

link

ASi

Explanation

ASi master

IP 66/67

Installation

1-2

Lowest level

Figure 1-1 Integrating the DP/ASi link

SensorActuator

SensorActuator

Up to 31 binary actuators and sensors are networked over the ASi cable. The
DP/ASi link is used to interface the ASi cable to PROFIBUS-DP. You can
operate up to 122 DP/ASi links to PROFIBUS-DP, should you use the
IM 308-C, for example, as the DP master.

ASi allows one ASi master. The DP/ASi link is the ASi master.

The DP/ASi link meets the IP 66/IP 67 degree of protection.

Owing to the IP 66/IP 67 degree of protection, you can use the DP/ASi link in
a harsh industrial environment. There is no preferred mounting location for
the DP/ASi link.

Distributed I/O System DP/ASi Link

EWA 4NEB 710 6055-02b

1.2 What is the DP/ASi Link?

Overview

Definition

Overview

Components

The DP/ASi link connects the actuator sensor interface (ASi) to the PROFI­BUS-DP field bus. In doing so, the protocols of the bus systems are conver­ted.

The DP/ASi link belongs to the Distributed I/O.
The DP/ASi link is a DP slave. In addition, other components belong to the

DP/ASi link. Not all components are necessarily required for operation:

T connector

PS

Power supply connector

Programmer connector

Bus cable

Power supply cable

Bus cable incl. power supply cable

SV

cntr

PG

2-core

3-core

5-core

Terminating resistor

Adapter cable

Figure 1-2 Components

Master interface

The DP/ASi link can be operated, for example, with the following master
interface module and COM ET 200 version:

 IM 308-C (version 1 or later)
 COM ET 200 Windows (version 2.0 or later).

Characteristics

The DP/ASi link has the following characteristics:

 IP 66/IP 67 degree of protection

 Compact design

Distributed I/O System DP/ASi Link
EWA 4NEB 710 6055-02b

The DP/ASi link is installed in degrees of protection IP 66 and IP 67.
When assembling, note that IP 66/IP 67 is insured only when you follow
the rules on installation set out in section 4.1.

The DP/ASi link is suitable for applications requiring little space. Its di­mensions are 2058057 mm plus the T connector.

1-3

Overview

 Connections

– PROFIBUS-DP
– ASi cable
– 24 V DC power supply

 Optical isolation between PROFIBUS-DP and ASi
 Direct ET 200 Handheld connection possible for setting the station num-

ber (using an adapter cable)

 ASi diagnostics using LEDs

The diagnosis can also be read using the DP master.

 The DP/ASi link has LEDs with the following meanings

– RUN
– BF (bus error)
– ASi POWER FAIL (ASi power supply failure)
– CONFIG ERROR (configuration error)
– AUTOPROG AV (automatic programming possible)
– CONFIG MODE (configuration mode)
– ASi-SLAVE FAIL (5 LEDs for displaying the failed ASi slave)

 The DP/ASi link can be operated on the PROFIBUS-DP with a baud rate

of up to 12000 kBd.

 Length of PROFIBUS bus cable

The following values apply to installation of the DP/ASi link for the
PROFIBUS bus cable as a function of the baud rate on the bus.

Table 1-1 Length of the PROFIBUS bus cable as a function of the baud rate on the

PROFIBUS DP bus

Baud Rate Max. Length of Bus Cable

< 187.5 kBd 1200 m per segment

187.5 kBd 1000 m per segment
500 kBd 400 m per segment

1500 kBd 200 m per segment

> 1500 kBd 100 m per segment

1-4

Distributed I/O System DP/ASi Link

EWA 4NEB 710 6055-02b

1.3 View of the DP/ASi Link

Overview

View

SINEC
L2-DP
+ PS

2 connections for

PROFIBUS-DP

Fig. 1-3 contains an illustration of the DP/ASi link.
You will find detailed descriptions of the different areas of the DP/ASi link in

Chapter 4.

DP / ASi LINK

RUN BF

124816+

+ + + = ASi SLAVE FAIL

LEDs Connection

ASi POWER FAIL
CONFIG ERROR

AUTOPROG A V
CONFIG MODE

6ES7 156-0AA01-0XA0

Screw-type cover

for DIP switch

block

ASi

3

123456

for ASi cable

+ 1

Figure 1-3 View of DP/ASi link

Distributed I/O System DP/ASi Link
EWA 4NEB 710 6055-02b

1-5

Overview

1-6

Distributed I/O System DP/ASi Link

EWA 4NEB 710 6055-02b

ASi Basics

2

Introduction

Definition

Overview

In this chapter

If you wish to acquire a general idea of ASi, this is the right chapter for you.
If you are already familiar with ASi, you can skip this chapter.

The Actuator Sensor Interface is a wiring system to which a master and up to
31 slaves can be connected.

The ASi master (the DP/ASi link) periodically transfers input and output data
from and to all the ASi slaves within a period not exceeding 5 ms.

The slaves may be configured as modules or intelligent actuators and sensors.
Intelligent sensors are BEROs, for instance.

After you have studied this chapter, you will know how the ASi is structured
and how it operates.

In Section You Will Find on Page

2.1 Structure of ASi 2-2

2.2 Elements of ASi 2-3

2.3 Example Configuration of a Module 2-5

2.4 Connecting Elements 2-6

2.5 Interruption or Short-Circuit of the ASi Cable 2-7

Distributed I/O System DP/ASi Link
EWA 4NEB 710 6055-02b

2-1

ASi Basics

2.1 Structure of ASi

Structure

You can install the ASi as branched with a single 2-wire cable. You connect
the DP/ASi link, the different ASi slaves and the ASi power supply unit to
any point on the ASi cable.

Example installa-

Fig. 2-1 shows an example installation of an ASi.

tion

a

Connection of DP/ASi link by means
of ASi cable

b

Remote ASi slave with external power
supply unit

c

ASi with star termination

d

You can also connect the ASi power
supply unit directly to an ASi slave.

b

To PROFIBUS-DP

DP/ASi link

a

ASi slave

ASi distribu-

tion unit

ASi power

supply unit

d

ASi distribu-

tion unit

ASi slave ASi slave

ASi slave ASi slave

ASi slave

ASi slave

Ext. power

supply unit

Figure 2-1 Example installation of an ASi

ASi slave

c

ASi slave

2-2

Distributed I/O System DP/ASi Link

EWA 4NEB 710 6055-02b

2.2 Elements of ASi

ASi Basics

DP/ASi link

ASi slave

The DP/ASi link is the ASi master. It controls communication in the ASi.
The DP/ASi link periodically exchanges data with the ASi slaves.

ASi slaves are the input and output channels of the ASi. ASi slaves transfer
data to the DP/ASi link when requested to do so by the DP/ASi link. ASi
slaves are:

 Modules

You connect up to 4 binary actuators and sensors to a single module.
A supply voltage of 24 VDC is available for the actuators and sensors at

the output of the modules.
You can combine different upper and lower parts to form a module, de-

pending on the application. The configuration of a module depends on
the:

– ASi cable used
– number of inputs and outputs (I/O code)
– use of an external power supply unit
You will find an example of a module in section 2.3.

 Intelligent actuators or sensors

You connect intelligent actuators and sensors directly to the ASi cable.

I/O code

ID code

You differentiate between the individual ASi slaves by means of an ASi ad­dress that you can set. You set the ASi address, for example, by using the ASi
addressing unit (Order No: 3RX9 400-0AA00).

All ASi slaves are supplied ex works with an ASi address of 0. This ASi ad­dress is not enabled within the ASi for data exchange.

The I/O code contains the definition of the distribution of the inputs and out­puts of the different ASi slaves. You will find the complete I/O code in Ap­pendix B.

You choose the ASi slave type according to the distribution of inputs and
outputs. From the viewpoint of the DP/ASi link, sensors are inputs and actua­tors are outputs.

The ID code is an additional code that be optionally used for any ASi slave.
The ID code is specified for every ASi slave. The default value for the ID
code is 0.

Distributed I/O System DP/ASi Link
EWA 4NEB 710 6055-02b

2-3

ASi Basics

ASi distribution
unit

ASi cable

!

You use the ASi distribution unit when you

 branch the ASi cable without using an ASi slave
 reroute the ASi cable to a normal 2-wire cable.

The ASi distribution unit is designed as a module and is not assigned an ASi
address.

You connect the different elements via an ASi cable that is protected against
polarity reversal.

Within the ASi, you can branch the ASi cable over a total length of up to
100 m. You can connect your elements to the ASi cable at any points you
like.

Caution

If you connect the ASi cable to a ring feeder or roll up the ASi cable, reli­able data transfer is not assured.

According to the ASi standard, multiple interconnections of the ASi cable
are prohibited, as is rolling it up (not even as a standby).

ASi power supply
unit

!

External power
supply

For the ASi power supply, you require a separate ASi power supply unit. The
ASi power supply unit is connected directly to the ASi cable. Data are super­imposed on the supply voltage. The ASi power supply unit has data decoup­ling and supplies a voltage of approximately 30 VDC.

ASi power supply units are available in different protection classes. Apart
from power supply units in IP 20, we also provide a power supply unit in
IP 66/IP 67. You can acquire it by ordering 6EP1 632-1AL01.

Caution

If you overload the power supply unit, either erroneous data transfer takes
place on the ASi cable or none at all.

If the supply voltage falls, it is possible that individual ASi slaves will not
operate properly. Please pay attention to the data sheets for the ASi slaves
you are using.

Do not load the ASi power supply unit above its rated output.

The external power supply is optically isolated from the ASi power supply.
You use an external power supply when an ASi slave requires a higher load

voltage or a higher load current.

2-4

You connect an external power supply unit directly to the module concerned.

Distributed I/O System DP/ASi Link

EWA 4NEB 710 6055-02b

2.3 Example Configuration of a Module

ASi Basics

Module configura­tion

Every module consists of an upper part and a lower part.
As an example, you can see an illustration in Fig. 2-2 of an upper part with

two inputs and two outputs and a lower part for the ASi cable without an in­terface for an external power supply.

The upper part is attached to the lower part with four attaching screws (see
remark g).

Module lower

part

c

b

a

Module upper

d

part

I1

I2

O3

e

O4

f

a

Contact spikes with two contacts per core

b

ASi cable aperture

c

Seals for the cable apertures that are not required

d

Actuator/sensor connection with M12 bush

e

Display LEDs for input and output

f

Drilled through-hole for attaching the module

g

Screws for attaching the upper part to the lower part

Figure 2-2 View of module, example of an upper part and a lower part

g

Distributed I/O System DP/ASi Link
EWA 4NEB 710 6055-02b

2-5

ASi Basics

2.4 Connecting Elements

Connecting

Penetration tech­nique

Contacts for 2-wire
cable

You connect the elements of the ASi by attaching the modules to the ASi
cable. You do not have to operate the ASi cable for this.

The ASi cable is connected to the DP/ASi link by means of a connector.

In section 2.3, Fig. 2-2, you can see an illustration of an example of a mod­ule.

You place the ASi cable in the module lower part. By attaching the module
upper part to the lower part, the two contact spikes per core penetrate the
insulation of the ASi cable and establish the contact.

You will find comprehensive installation instructions in the description of the
module that you wish to integrate in the ASi.

Should you wish to use a normal 2-wire cable instead of the ASi cable, con­nect it to the module in accordance with the manufacturer’s specifications.

2-6

Distributed I/O System DP/ASi Link

EWA 4NEB 710 6055-02b

2.5 Interruption or Short-Circuit of the ASi cable

ASi Basics

ASi short-circuit

ASi interruption

!

ASi slave reaction

!

If the ASi cable is short-circuited due to pinching or fraying of the insulation,
data exchange no longer takes place on the ASi cable.

If the ASi cable is interrupted, you can no longer address the actuators or
sensors which, as viewed from the DP/ASi link, are located downstream of
the point of interruption.

The actuators and sensors upstream of the point of interruption are still able
to operate.

Warning

If the ASi fails completely or partially, the DP/ASi link can no longer ad­dress the actuators and sensors affected by the failure.

Data is no longer exchanged with the ASi slaves affected.

If an ASi slave detects a failure of the ASi, the response depends on the ASi
slave concerned.

Warning

There is a possibility of the ASi slave retaining its latest state after a failure
– for instance, outputs that have been set remain set.

Study the description of the ASi slave.

Distributed I/O System DP/ASi Link
EWA 4NEB 710 6055-02b

2-7

ASi Basics

2-8

Distributed I/O System DP/ASi Link

EWA 4NEB 710 6055-02b

Configuration Options

3

Introduction

Tip

In this chapter

At this point we will show you how you integrate the DP/ASi link into the
PROFIBUS-DP, and what you have to bear in mind when you do so.

The power supply (PS) described in this chapter is the 24 VDC power supply
of the DP/ASi link, which is required to operate it.

If you are already familiar with the configuration options of the PROFIBUS­DP – for example, from the Distributed I/O System ET 200C manual, you can
skip this chapter.

In this chapter we take a look at the PROFIBUS-DP side of the DP/ASi link.

In Section You Will Find on Page

3.1 Summary of Configuration Options 3-2

3.2 Configuration without T Connector and with Power Supply
Connector

3.3 Configuration with T Connector and with Power Supply
Connector

3.4 Configuration with Several Power Supply Connectors 3-6

3.5 Configuration without Power Supply Connector 3-7

3.6 Configuration with Programmer Connector 3-9

3-3

3-4

Distributed I/O System DP/ASi Link
EWA 4NEB 710 6055-02b

3-1

g p pp y

(y p

Configuration Options

3.1 Summary of Configuration Options

Configuration
options

PROFIBUS-DP presents you with different configuration options for combin­ing the PROFIBUS-DP and the 24 V power supply of the devices. The fol­lowing T able 3-1 shows the different options.

Table 3-1 Configuration options

Power Supply Connector for Device’s

Configuration Refer to

Internal Power Consumption

Configuration with power supply con­nector

Configuration without T connector Section 3.2
Configuration with T connector Section 3.3
Configuration with programmer

connector

Configuration with several power supply connectors (the degree of expansion is
limited with a PS connector)

Configuration without power supply
connector (every L2 station has a sepa­rate power supply)

Configuration without power supply con­nector

Configuration with programmer

connector

Legend for
following sections

Configuration options are described in the following using illustrations for a
possible installation. We use the following legend:

Section 3.6

Section 3.4

Section 3.5

Section 3.6

3-2

T connector

PS

Power supply connector

Programmer connector

Bus cable

Power supply (PS) cable

Bus cable incl. PS cable

PS

cntr
PG

2-core
3-core (see note)

5-core

Terminating resistor

Adapter cable

Figure 3-1 Legend

Note

The 2-core bus cable must not be incorporated between the power supply
unit and a load.

If you incorporate the bus cable in the power supply cable, an inadmissible
spur line occurs. Data transfer is no longer assured in the PROFIBUS-DP.

Distributed I/O System DP/ASi Link

EWA 4NEB 710 6055-02b

Configuration Options

3.2 Configuration without T Connector and with Power Supply Connec­tor

Definition

Advantage

Constraint

Cables

In a configuration with a looped-through field bus and a power supply, the
DP/ASi link is connected directly to the PROFIBUS-DP.

The power supply is gated by means of the power supply connector with the
PROFIBUS-DP in a single cable.

You do not require a T connector.
The power supply is fed along the bus cable, i.e. an external power supply of

the slave station is not required.

If a slave station is disconnected from the bus, ”bus traffic” is interrupted for
the slave stations that follow it.

Bus traffic may be disrupted for the slave stations still on the bus owing to
the absence of the terminating resistor.

The degree of expansion with a power supply connector is limited (refer to
section 3.4).

You use cables of different design for the installation:

 If you wish to use prefabricated Siemens cables, please turn to sec-

tion 4.4.4.

 If you wish to prepare your own cables, please turn to section 4.4.7.

Installation

Distributed I/O System DP/ASi Link
EWA 4NEB 710 6055-02b

Fig. 3-2 shows a possible installation for the configuration with a power sup­ply connector and without a T connector:

Figure 3-2 PROFIBUS-DP and power supply looped through on DP/ASi link

External

power supply

PROFIBUS-DP

PS-

SV

cntr

DP/ASi link

DP/ASi link

3-3

Configuration Options

3.3 Configuration with T Connector and with Power Supply Connector

Definition

Advantage

Constraint

Cables

Installation

In a configuration with a power supply connector and a T connector, the DP/
ASi link is connected by means of a T connector to the PROFIBUS-DP.

The power supply is gated by means of the power supply connector with the
PROFIBUS-DP in a single cable.

A slave station can be disconnected at any time from the bus without the ”bus
traffic” being interrupted for the other slave stations.

The power supply is fed along the bus cable, i.e. an external power supply of
the slave station is not required.

The degree of expansion with a PS connector is limited (refer to section 3.4).

You use cables of different design for the installation:

 If you wish to use prefabricated Siemens cables, please turn to sec-

tion 4.4.4.

 If you wish to prepare your own cables, please turn to section 4.4.7.

Fig. 3-3 shows a possible installation for the configuration with a power sup­ply connector and with a T connector:

3-4

External
power supply

PS

PS

cntr

PROFIBUS-DP

Figure 3-3 PROFIBUS-DP and power supply looped through by means of T

connector

DP/ASi link

DP/ASi link

Distributed I/O System DP/ASi Link

EWA 4NEB 710 6055-02b