Siemens DP/AS-Interface Link 20E User Manual

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Page 1

Preface, Contents

SIMATIC NET

DP/AS-Interface Link 20E

Manual

Technical Description, Installation Instructions, Operation

Data Exchange between DP Master and AS-i Slave

Using the Command Interface

Slave Diagnostics Eliminating Problems /

Error Displays

Appendix

AS-Interface Protocol Implementation Conformance Statements

1 2

3 4

Industrial Ethernet

AS–Interface

Release 11/2002 C79000-G8976-C138–04

PROFIBUS

AS-Interface

Structure of the PROFIBUS Parameter Assignment and Configuration Frame

References

Note on the CE Mark

Glossary

Index

B C D E

Page 2

Classification of Safety-Related Notices

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 or severe personal injury will result if proper precautions are not taken.

Warning

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

Caution

with warning triangle indicates that minor personal injury can result if proper precautions are not taken.

Caution

without warning triangle indicates that damage to property can result if proper precautions are not taken.

Notice

indicates that an undesirable result or status can result if the relevant notice is ignored.

Note

highlights important information on the product, using the product, or part of the documentation that is of particular importance and that will be of benefit to the user.

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Trademarks

SIMATICR, SIMATIC HMIR and SIMATIC NETR are registered trademarks of SIEMENS AG.

Third parties using for their own purposes any other names in this document which refer to trademarks might infringe upon the rights of the trademark owners.

Safety Instructions Regarding your Product:

Before you use the product described here, read the safety instructions below thoroughly.

Qualified Personnel

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.

Correct Usage of Hardware Products

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.

Before you use the supplied sample programs or programs you have written yourself, make certain that no injury to persons nor damage to equipment can result in your plant or process.

EU Directive: Do not start up until you have established that the machine on which you intend to run this component complies with the directive 89/392/EEC.

Correct Usage of Software Products

Note the following:

Warning

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

Before you use the supplied sample programs or programs you have written yourself, make certain that no injury to persons nor damage to equipment can result in your plant or process.

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Prior to Startup

Prior to startup, note the following:

Caution

Prior to startup, note the information and follow the instructions in the latest documentation. You will find the ordering data for this documentation in the relevant catalogs or contact your local Siemens office.

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 and Drives Postfach 4848, D-90327 Nuernberg

Siemens Aktiengesellschaft G79000–G8976–C138–04

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.

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Preface

Purpose of the Manual

This manual supports you when using the DP/AS-Interface Link 20E module, shortened to DP/AS-i Link 20E in the following chapters. It contains information about how PROFIBUS DP masters can address AS-i actuators and AS-i sensors via this module.

We recommend the following procedure when...

... You want an overall picture of the AS-Interface.

– First read the ‘AS-Interface Introduction and Basic Information’ manual (not

part of this documentation package). This contains general information about the AS-Interface, abbreviated to AS-i in the following chapters.

... You want to set up an AS-i system and include the DP/AS-i Link 20E module in

it: – You will find the information you require about connecting and operating the

DP/AS-i Link 20E module in Chapter 1.

... You want to know how to operate the DP/AS-i Link 20E from the point of view of

the PROFIBUS DP master: – Read Chapter 2 in this manual. – Chapter 3 explains the command interface.

Requirements

To understand this manual, you require the following:

S A working knowledge of PROFIBUS DP S You should be familiar with the ‘AS-Interface Introduction and Basic Information’

manual (not supplied with this documentation package).

Diskette with the GSD file

The accompanying diskette contains the GSD file that you require for configuring a DP/AS-i Link 20E module with your DP master (see Section 1.9.1).

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Preface

DP/AS-Interface Link 20E

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1 Technical Description, Installation Instructions, Operation 9. . . . . . . . . . . . . . . .

1.1 General Notes on Operation – Safety Warnings 10. . . . . . . . . . . . . . . . . . . . .

1.2 Application of the Module 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 Technical Data of the Module 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4 Installing the Module 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.5 Front Panel – Access to all Functions 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.6 Connection Elements 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.7 Display and Control Elements 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.7.1 Status Display 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.7.2 Slave Display for AS-i Slaves 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.7.3 Displaying and Setting the PROFIBUS Address 23. . . . . . . . . . . . . . . . . . . . .

1.8 Configuring the AS-Interface with the SET Button (Button Configuration) 25

1.9 Configuring the DP/AS-i Link 20E as a DP Slave on the DP Master 28. . . .

1.9.1 General Procedure 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.9.2 Importing a GSD File 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.9.3 Configuration in STEP 7 – Basic Configuration 33. . . . . . . . . . . . . . . . . . . . . .

1.9.4 Configuring in STEP 7 – Slave Configuration 36. . . . . . . . . . . . . . . . . . . . . . . .

1.9.5 Upload Actual Configuration 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.10 Transmission Rate on PROFIBUS 42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 Data Exchange Between the DP Master and AS-i Slave 43. . . . . . . . . . . . . . . . . . . .

2.1 Preparation for Operation – an Overview 44. . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2 How the Interfaces Work 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.3 Transferring AS-i Binary Values 46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.3.1 Addressing AS-i Slaves 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.3.2 Accessing AS-i Binary Data 51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.4 Transferring AS-i Analog Values 52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.4.1 Calling Acyclic Services 54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.4.2 Programming 56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.4.3 Programming Examples 60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.5 PROFIBUS DP Control Commands 61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 Using the Command Interface 63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1 Command Interface of the DP/AS-Interface Link 20E 64. . . . . . . . . . . . . . . . .

3.2 Command Interface for SIMATIC S7 70. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3 Description of the AS-i Slave Commands 76. . . . . . . . . . . . . . . . . . . . . . . . . . .

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Contents

3.3.1 Set_Permanent_Parameter 80. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.2 Get_Permanent_Parameter 81. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.3 Write_Parameter 82. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.4 Read_Parameter 83. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.5 Store_Actual_Parameters 84. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.6 Set_Extended_Permanent_Configuration 85. . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.7 Get_Extended_Permanent_Configuration 86. . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.8 Store_Actual_Configuration 87. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.9 Get_Extended_Actual_Configuration 88. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.10 Set_LPS 89. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.11 Set_Offline_Mode 90. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.12 Select Autoprogramming 91. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.13 Set_Operation_Mode 92. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.14 Change_AS-i_Slave_Address 93. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.15 Get_AS-i_Slave_Status 94. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.16 Get_LPS, Get_LAS, Get_LDS, Get_Flags 95. . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.17 Get_Extended_Total_Configuration 98. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.18 Store_Extended_Total_Configuration 103. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.19 Write_Extended_Parameter_List 108. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.20 Read_Extended_Parameter_Echo_List 109. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.21 Read_Version_ID 110. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.22 Read_AS-i_Slave_ID 112. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.23 Read_AS-i_Slave_Extended_ID1 113. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.24 Write_AS-i_Slave_Extended_ID1 114. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.25 Read_AS-i_Slave_Extended_ID2 115. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.26 Read_AS-i_Slave_I/O 116. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.27 Get_LPF 117. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.28 Write_AS-i_Slave_Parameter_String 118. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.29 Read_AS-i_Slave_Parameter_String 119. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.30 Read_AS-i_Slave_ID_String 120. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.31 Read_AS-i_Slave_Diagnostic_String 121. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 Slave Diagnostics 123. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1 Overview 124. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.2 Station Status 1 to 3 125. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.3 PROFIBUS Address of the DP Master and Vendor ID 127. . . . . . . . . . . . . . . .

4.4 Structure of ID-Related Diagnostics 127. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.5 Structure of the Device-Related Diagnostic Information 127. . . . . . . . . . . . . . .

5 Dealing with Problems/Error Displays 131. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.1 Replacing a Defective AS-i Slave/Automatic Address Programming 132. . . .

5.2 Error Displays/Remedying Errors 133. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Contents

A AS-Interface Protocol Implementation Conformance Statement (PICS) 137. . . . .

B Structure of the PROFIBUS DP Parameter Assignment

and Configuration Frame 141. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C References 145. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

D Notes on the CE Mark 147. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E Glossary 149. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E.1 Terms Relating to AS-Interface 150. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E.2 Terms Relating to PROFIBUS 153. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Contents

DP/AS-Interface Link 20E

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Technical Description, Installation Instructions, Operation

This chapter explains the performance, installation and basic functions of the master module DP/AS-Interface Link 20E module (DP/AS-i Link 20E).

You will learn the following:

S How to install the DP/AS-i Link 20E module S The display and control elements of the DP/AS-i Link 20E module S How to configure the DP/AS-i Link 20E module with the push button S How to configure a SIMATIC S7 DP master in STEP 7 S How to set the PROFIBUS address for the DP/AS-i Link 20E module

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Technical Description, Installation Instructions, Operation

1.1 General Notes on Operation – Safety Warnings

Caution

When handling and installing the DP/AS-i Link 20E module, make sure that you adhere to the ESD guidelines.

The DP/AS-i Link 20E module must only be connected when the AS-i power supply unit is turned off.

Caution

Noise immunity/grounding To ensure the noise immunity of the DP/AS-i Link 20E module, both the

DP/AS-i Link 20E module and the AS-i power supply unit must be grounded correctly.

Caution

The AS-i power supply unit used must provide a low voltage, safely isolated from the network. This safe isolation can be implemented according to the following requirements:

S VDE 0100 Part 410 = HD 384-4-4 = IEC 364-4-41

(as functional extra-low voltage with safe isolation) or

S VDE 0805 = EN60950 = IEC 950

(as safety extra-low voltage SELV) or

S VDE 0106 Part 101

Note

The DP/AS-i Link 20E module can be configured, installed and started up independent of the PROFIBUS installation.

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Technical Description, Installation Instructions, Operation

1.2 Application of the Module

DP Slave and AS-Interface Master

The DP/AS-i Link 20E module is both a PROFIBUS DP slave and an AS master at the same time:

S The DP/AS-i Link 20E module connects the actuator-sensor interface with

PROFIBUS DP.

S Using the DP/AS-i Link 20E module, you can access the inputs and outputs of

the AS-i slaves from PROFIBUS DP. Depending on the slave type, you can access binary values or analog values.

The following AS-i slaves can be used: – Standard Slaves / AS–i Analog Slaves – Slaves with the extended addressing mode

Wider networking via PROFIBUS DP

AS-i power supply

ADR

DP/AS-Interface

Link 20E

DIA

APF

CER AUP

X 2 3 4

0910

6GK7 1415 2AA0

DP/AS-Interface Link 20E

Passive module (without slave ASIC)

Actuator/sensor

with slave ASIC

Active module

(with slave ASIC)

5A slave5B slave

AS-i

Branch

cable

AS-i modules with the extended addressing mode

Figure 1-1 Example of a System Configuration with the DP/AS-i Link 20E Module

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Technical Description, Installation Instructions, Operation

Features

The DP/AS-i Link 20E allows byte and word-consistent exchange of I/O data with a DPV0, DPV1 master and the AS-i slaves.

S DPV0 mode

In the DPV0 mode and using a maximum of 32/32 bytes from the I/O area, up to 62 digital AS-i slaves can be operated at a transmission rate of 9.6 Kbps up to 12 Mbps. The command interface and the simple access to the AS-i analog values using the AS-i slave profile 7.3/7.4 are not available in the DPV0 mode.

S DPV1 mode

In the DPV1–/DPx mode and using a maximum of 32/32 bytes from the I/O area, up to 62 digital AS-i slaves can be operated at a transmission rate of 9.6 Kbps up to 12 Mbps. In addition to this, the services read_record/write_record allow a maximum of 32 AS-i analog slaves with up to 4 analog I/O channels to be operated.

Commands complying with the AS-i master specification M1e are implemented with the read_record/write_record (record 2) services.

Components of the Product

The product DP/AS-i Link 20E includes the following components:

S DP/AS-i Link 20E S Product information for the DP/AS-i Link 20E

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Technical Description, Installation Instructions, Operation

1.3 Technical Data of the Module

The DP/AS-i Link 20E module has the following technical data:

Table 1-1

Feature

AS-i cycle time S 5 ms for 31 slaves

Explanation/Values

S 10 ms for 62 slaves with the extended

addressing mode Configuration of the AS-Interface With the button on the front panel or with STEP 7 Supported AS-i master profiles M1e Connection of the AS-i cable Via a 7-pin terminal block

Permitted current loading from terminal 1 to

terminal 3 or terminal 2 to terminal 4, maximum 3 A Connection to PROFIBUS Via 9-pin sub D female connector PROFIBUS address setting – Address range 1 to 126

– Set with SET and DISPLAY buttons Permitted loading 5V DC at PROFIBUS connector max. 90 mA Data rates supported (transmission rate) on

PROFIBUS

Power supply from the AS-i cable Current consumption from the AS-i cable

Power consumption 3.7 W Ambient conditions

9.6 Kbps; 19.2 Kbps; 45.45 Kbps; 93.75 Kbps;

187.5 Kbps; 500 Kbps; 1.5 Mbps; 3 Mbps;

6 Mbps; 12 Mbps

According to the AS-i specification

max. 200 mA

S Operating temperature Horizontal installation: 0 to 60°C

Vertical installation: 0 to 45°C

S Transportation and storage temperature –40°C to +70°C S Relative humidity max. 95% at +25°C

Construction

S Type of protection IP 20 S Dimensions (W x H x D) in mm 90 x 80 x 62 S Weight approx. 200 g

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Technical Description, Installation Instructions, Operation

1.4 Installing the Module

Options

The DP/AS-i Link 20E module has type of protection IP 20. S You can install the DP/AS-i Link 20E module on a normal standard rail

(complying with EN 50022).

S As an option, you can also install the module on a wall directly using the

mounting holes in the casing.

Installation on a Standard Rail

If you decide to install a module on a standard rail, please note the following points:

1. The module is placed on the standard rail from above and then pushed down until the catch at the bottom of the module locks into position.

2. Other modules can be installed to the left and right of the module.

Removing the Module from the Standard Rail

To remove the module from the standard rail, follow the procedure below:

1. When removing the module from the standard rail, the power supply and signal cables must be removed first.

2. After the cables have been disconnected, press the catch on the module down using a screwdriver and pull the module out of the rail towards the top.

Convection

Make sure that you leave at least 5 cm clearance above and below the module to allow heat dissipation.

Vertical Installation

The standard rail can also be installed vertically. Due to the reduced convection, the maximum permitted ambient temperature is reduced to 45°C.

Fit a grounding clip to the standard rail below the DP/AS-i Link 20E to prevent it slipping down on the standard rail.

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Technical Description, Installation Instructions, Operation

1.5 Front Panel – Access to all Functions

Connection, Display and Control Elements

On the front panel, you have access to all the connection, display and control elements of the DP/AS-i Link 20E module.

In operation, the connection and control elements are protected by a front cover.

Connection Elements

(front cover open)

Group Display

– 3 LEDs

Slave Display

– 5 LEDs

Display elements

Control Elements

(front cover open)

SET Button

– For AS-i configuration – For setting the PROFIBUS address

DISPLAY Button

– Changes over the display

)

SET

24 23 22 21 20

19 18 17 16 15

1 PROFIBUS DP

29 28 27

26 25

)

14 13

12 11 10

DISPLAY

ADR BF SF

9 8 7 6 5

PWR

APF

CER AUP

DP/AS-Interface Link 20E

6GK1 415-2AA01

Mounting hole for wall installation

Labeling Field

status display

LED Row with 8 two-color LEDs (red/green or yellow/green) for

– status display

– group/slave display

X 2 3 4

Figure 1-2 Front Panel

Connections, Operator Controls and Interpreting the Displays

For more detailed information, refer to the following sections.

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1.6 Connection Elements

Connections

The DP/AS-i Link 20E module has the following connections:

S Two connections to the AS-i cable (bridged internally) S One connection for functional earth S One connection to PROFIBUS (9-pin sub D female connector)

The connectors are located below the upper cover of the front panel of the DP/AS-i Link 20E module.

Connections to the AS-i cable

The DP/AS-i Link 20E module has two connections for AS-i cables that are jumpered internally in the DP/AS-i Link 20E module.

This allows the DP/AS-i Link 20E module to be looped into the AS-i cable.

Caution

The permitted current loading of the AS-i connection contacts is 3 A. If this value is exceeded on the AS-i cable, the DP/AS-i Link 20E module must not be looped into the AS-i cable but must be connected with a tap line (only one pair of connectors of the DP/AS-i Link 20E module is used).

The DP/AS-i Link 20E module is supplied with power entirely from the AS-Interface.

The current consumption from the AS-Interface is 200 mA.

AS-i cables

Functional ground

Connections not used

–

1 PROFIBUS DP

Figure 1-3 Connection of the AS-i Cable

–

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Caution

The free terminals 6 and 7 in the terminal block must not be connected.

Note Functional Ground

The DP/AS-i Link 20E module has a connection for functional ground. This connector should be connected to the PE conductor with as little resistance as possible.

(terminal )

Connection to PROFIBUS DP

Connection to PROFIBUS DP is via a 9-pin sub D female connector.

Warning

When laying and installing the PROFIBUS DP cable and the bus connector, follow the instructions in /5/.

To connect to PROFIBUS DP, bus connectors are available with cable outlets at different angles (0°, 30° and 90°). Once again, follow the instructions in /5/.

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1.7 Display and Control Elements

Meaning of the ADR, BF and SF LEDs

The front panel of the DP/AS-i Link 20E module has a row with 8 LEDs (see Figure 1-2). All the LEDs are 2-color (red/green or yellow/green). The upper three LEDs (ADR, BF and SF) make up the group display. They indicate the display status.

Changing the Display Status – DISPLAY Button

The following figure shows the possible display statuses of the group display. You can change between the status display, slave display and PROFIBUS display

with the DISPLAY button. Each time you press the button, you change to the next display status finally returning to the initial status.

Status display

(initial status)

ADR

0..4 1B..4B

Change to next display status with the DISPLAY button

Display of the AS-i slaves

5..9 5B..9B

10..14 10B..14B

15..19 15B..19B

20..24 20B..24B

25..29 25B..29B

PROFIBUS address display

30..31 30B..31B

Key:

Static display: AS-i standard slaves and A slaves Flashing display: B slaves

red red or off green green or off off

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1.7.1 Status Display

ÍÍ

Interpreting the Status Display

ADR

off

red or off

Technical Description, Installation Instructions, Operation

The status display is the default standard display in the basic status of the DP/AS-i Link 20E module. No group LED is lit green. The “ADR” LED must also not be lit red.

The lower 7 LEDs indicate the status of the DP/AS-i Link 20E; the label to the right of the LEDs then applies.

The bottom 5 LEDs indicate errors/states on the AS-Interface. The BF LED indicates an error on

red or off

PROFIBUS-DP

Meaning of the 7 Lower LEDs

When the status display is active, the LEDs have the following significance:

Table 1-2

LED (color)

BF (red) Bus Failure Indicates errors on PROFIBUS DP.

Status Meaning

The LED is lit when:

S The connection between the DP master and the DP/AS-i Link 20E

module has broken down or the DP master is not active.

S The DP/AS-i Link 20E module was not or was incorrectly

configured/assigned parameters by the DP master.

SF (red) System error The LED is lit when:

S In the protected mode, a diagnostic interrupt (entering state) was

triggered on the DP master.

S The DP/AS-i Link 20E has detected an internal error (for example

EEPROM defective).

S While pressing the SET button, the DP/AS-i Link 20E module

cannot currently make the required mode change (for example a slave exists with address 0).

PWR (green) Run The LED is lit when the DP/AS-Interface Link 20E is supplied with

power.

APF (red) AS-i Power Fail This indicates that the voltage supplied to the AS-i cable by the AS-i

power supply unit is too low. Note:

The DP/AS-i Link 20E module is supplied with power entirely from the AS-Interface. Total failure of the AS-i power supply can therefore no longer be displayed by AS-i Power Fail. You can recognize this situation because the “PWR” LED is not lit.

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Table 1-2 , (continued)

LED (color) MeaningStatus

CER (yellow) Configuration

Error

This LED indicates whether the slave configuration detected on the AS-i cable matches the expected configuration on the DP/AS-i Link 20E module. If they do not match, the “CER” LED is lit.

The “CER” LED is lit in the following situations:

S When a configured AS-i slave does not exist on the AS-i cable (for

example failure of the slave).

S When an AS-i slave exists on the AS-i cable but it was not

previously configured.

S When an attached AS-i slave has different configuration data (I/O

configuration, ID code) from the slave configured on the DP/AS-i Link 20E.

S When the DP/AS-i Link 20E module is in the offline mode.

AUP (green) Autoprog

available

CM (yellow) Configuration

Mode

In the protected mode of the DP/AS-i Link 20E module, the LED indicates that automatic address programming of an AS-i slave is possible. The automatic address programming makes it much easier to exchange a defective AS-i slave on the AS-i cable (for more detailed information refer to Chapter 5.1).

This LED displays the mode of the DP/AS-i Link 20E module.

S LED lit: configuration mode S LED unlit: protected mode

The configuration mode is only required for installing and starting up the DP/AS-i Link 20E module. In the configuration mode, the DP/AS-i Link 20E module activates all connected AS-i slaves and exchanges data with them. For more information about the configuration mode, refer to Section 1.8.

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1.7.2 Slave Display for AS-i Slaves

Interpreting the slave display status

The slave display can be recognized by the fact that at least

ADR

green or off

one group LED is lit green and that the ADR LED is not red. The lower 5 LEDs then indicate the slaves on the

AS-Interface. In this case, the label to the left of the LEDs applies. The display always represents 5 slaves.

green or off

Display Statuses and Operation in Detail

The AS-i slaves are displayed in groups of five. The upper three group LEDs indicate (in green) which of the groups of 5 is displayed. The following distinction is also made:

S Static display: AS-i standard slaves and A slaves S Flashing display: B slaves

The lower five LEDs are lit green to indicate the detected or active AS-i slaves within the group.

You can move from group to group by pressing the DISPLAY button again. The module returns to the status display in the following situations: S After displaying the last group (AS-i slaves 30, 31) and pressing the DISPLAY

button twice. (In other words changing to the PROFIBUS address display and then to the status display.)

S If you do not press the DISPLAY button for approximately 8 minutes.

Characteristics of the Slave Display

S If the DP/AS-i Link 20E module is in the configuration mode, all detected

AS-i slaves are displayed.

S If the DP/AS-i Link 20E module is in the protected mode, all active AS-i slaves

are displayed. In the protected mode, failed or existing but unconfigured AS-i slaves are indicated by the corresponding LED flashing.

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Example of a Slave Display

Group Display

– 3 LEDs

Slave Display

– 5 LEDs

Display elements

31 30

28 27 26 25

Figure 1-4 Example of a Slave Display

From the display you can obtain the following information:

S The group LEDs indicate the second group of five. S Within this group, the active AS-i slaves 6 and 8 are displayed by the lower five

LEDs.

24 23 22 21 20

19 18 17 16 15

13 12

11 10

ADR BF SF

9 8 7 6 5

RUN

APF

CER AUP

DP/AS-Interface Link 20+

X 2 3 4

6GK1 415-2AA00

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1.7.3 Displaying and Setting the PROFIBUS Address

Interpreting the PROFIBUS Address Display

If the top LED (“ADR”) of the group display is lit up red, the 7

ADR

red

lower LEDs indicate the PROFIBUS address of the DP/AS-i Link 20E in binary format.

green or off

Setting the PROFIBUS Address

To set the PROFIBUS address of the DP/AS-i Link 20E module, follow the steps outlined below:

1. Interrupt the connection to the DP master (for example by unplugging the PROFIBUS connector) or switch the DP master to STOP.

Note

The PROFIBUS address can only be set in this mode.

2. Change the display on the DP/AS-i Link 20E module until the “ADR” LED is lit red by pressing the DISPLAY button (note: starting from the status display, the button must be pressed 15 times!).

The DP/AS-i Link 20E module then indicates the currently set PROFIBUS address using the 7 lower LEDs.

3. If you now press the DISPLAY button, the DP/AS-i Link 20E returns to the status display, the set PROFIBUS address is retained.

If, on the other hand, you press the SET button, you can set a new value for the PROFIBUS address. First of all, the “BF” LED flashes and the most significant bit of the PROFIBUS address is displayed.

4. If you press SET, this bit is set (LED on), if you press the DISPLAY button, the bit is reset (LED off). The display then jumps to the “SF” LED (next address bit of the PROFIBUS address).

5. By following the steps outlined above, you can now set or reset each of the individual bits of the PROFIBUS address.

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6. When all the bits have been entered, the display of the set address bits alternates quickly red/green or yellow/green. If you press the SET button again, the set PROFIBUS address is adopted by the DP/AS-i Link 20E module. If, on the other hand, you press DISPLAY, the new address is discarded. The entry of the new address must then be repeated (as in step 4 and 5).

The value of the address bits represented by the LEDs of the PROFIBUS address is illustrated in the following example:

Figure 1-5

red

green

32 16

8 4

2 1

ADR BF SF

RUN

APF

CER AUP

In the example, the LEDs indicate the PROFIBUS address:

64 + 4 + 1 = 69

Value of the address bits

Labeling field

status display

LED row

In the example above, the PROFIBUS address 69 was set with the SET/DISPLAY buttons.

The highest address that can be set is address 126. Remember that address 126 is reserved on PROFIBUS for special functions (address assignment). For data exchange with a DP master, you can use addresses 1 to 125.

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1.8 Configuring the AS-Interface with the SET Button (Button Configuration)

Meaning of Button Configuration

This method of configuration allows you to commission the AS–Interface on the DP/AS–i Link 20E quickly and with little effort.

If you want to configure the AS–Interface using STEP 7 (see Section 1.9), you can skip this section.

Interpreting the Display Status

The DP/AS-Interface Link 20E module has two modes:

S configuration mode S protected mode

If you press the SET button, the mode changes to the other mode.

Notice

Note that the SET button is only effective when the connection to the DP master is interrupted or when the DP master is set to STOP.

Configuration Mode

The configuration mode is used during AS-i installation and startup. In the configuration mode, the DP/AS-i Link 20E module can exchange data with

every AS-i slave connected to the AS-i cable (except for the AS-i slave with address ‘0’). Any AS-i slaves that are added later are detected immediately by the master and activated and included in the cyclic data exchange.

When installation and startup is completed, the DP/AS-i Link 20E module can be switched to the protected mode using the SET button. Any AS-i slaves active at this point are therefore configured. The AS-i slave information shown below is then stored in non-volatile memory on the DP/AS-Interface Link 20E module:

S the addresses S the ID codes S the I/O configuration

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Protected Mode

If the DP/AS-Interface Link 20E is in the protected mode, it only exchanges data with slaves that are “configured”. In this sense, “configured” means that the slave addresses stored on the DP/AS-Interface Link 20E and the configuration data stored on the DP/AS-Interface Link 20E match the values of the existing AS-i slaves.

Preparing to Configure using Buttons

Make sure that the following situation applies: S The data exchange between the DP master and DP/AS-i Link 20E module is

interrupted or the DP master is in the STOP mode.

S The DP/AS-i Link 20E module and all AS-i slaves must be connected to the AS

interface and supplied with power by the AS-i power supply unit.

S The AS-i slaves must have unique addresses other than “0”.

Notice

It is only possible to configure the AS interface in the status display or slave display status. The DP/AS-i Link 20E module must not be in the PROFIBUS address display mode; in other words when the SET button is pressed, the “ADR” LED display must not lights up red.

Configuring using Buttons

1. Press the DISPLAY button to set the DP/AS-i Link 20E display to the “status display” mode (initial status).

2. Check whether the DP/AS-i Link 20E module is in the “configuration mode”. (”CM” LED lit ). If not, change the DP/AS-i Link 20E to the configuration mode using the SET button.

3. By changing to the slave display with the DISPLAY button, you can check whether all the slaves connected to the AS-Interface exist and are displayed.

4. Press the SET button. This configures the DP/AS-i Link 20E, in other words the actual configuration detected by the DP/AS-i Link 20E is stored as the default in the non-volatile EEPROM. At the same time, the DP/AS-i Link 20E module is switched to the protected mode, the “CM” LED goes off.

The “CER” LED also goes off since the “expected configuration” stored on the DP/AS-i Link 20E module after configuration matches the existing “actual configuration” on the AS-Interface.

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Notice

Changing from the configuration mode to the protected mode is only possible when there is no AS-i slave with address 0 connected to the AS-Interface. If a slave 0 is connected, the “SF” LED lights up when the SET button is pressed.

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1.9 Configuring the DP/AS-i Link 20E as a DP Slave on the DP Master

Significance of the Configuration

Communication with the DP slaves differs depending on the device you are using as the DP master. Generally, you provide the information specifying the structure of the DP master system during configuration.

The following aspects of DP configuration on the DP master are explained in this section:

S The use of the GSD file S The entries to be made in the configuration tool of the DP master S Configuration of a DP master from the SIMATIC S7 device range in STEP 7.

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1.9.1 General Procedure

Available Configuration Tools

S COM-PROFIBUS (ET 200) S STEP 7 (SIMATIC S7) S SIMATIC NCM PC S Products from other manufacturers

Configurable Modes and Features of the DP Master

The following table lists the essential features of the possible DP master modes complying with DPV0 and DPV1 (see also Section 1.2)

Table 1-3

Functions Available Via the AS-i Link 20E

Access to binary I/O data X X Convenient access to AS-i analog values

complying with AS-i slave profile 7.3/7.4 AS-i command interface – X

1) With SIMATIC S7 masters with an integrated interface and with the CP 443-5 EXT, these functions are also available (at the time of printing, these functions were being prepared for the CP 342-5).

Configuring the DP Master

The following table provides an overview of how to configure the possible modes dependent on the DP master and tool used.

You should also refer to the information in the manual of the relevant configuration tool.

Table 1-4

Type of DP Master

S S7 with DP interface

integrated in the CPU

S S7 with DP

attachment via CP 342-5 and CP 443-5

STEP 7 from Version 5 with SP3 onwards

STEP 7 up to Version 5 with SP2

DPV0 Mode DPV1 Mode

– X

DP master configured with... Mode/Features

Tool Procedure

Take DP/AS-i Link 20E from the hardware catalog and configure it in HW Config

Import GSD file and set S7 mode

DPV1 + configured slave configuration during startup (see

Section 1.9.4)

DPV0 or DPV1 can be

selected (see Section

1.9.2)

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Table 1-4 , continued

Type of DP Master Mode/FeaturesDP master configured with... Mode/FeaturesType of DP Master

ProcedureTool

Standard complying with DPV0

Standard complying with DPV1

Depending on specific master

For example import GSD file in COM PROFIBUS

Enable DPV1 (see Section 1.9.2)

GSD file

The GSD file also contains the information about the DP/AS-i Link 20E required by the configuration tool (for example STEP 7 or COM PROFIBUS).

DPV0

DPV1

The GSD file is shipped on diskette along with this manual and can also be downloaded via a modem from the Interface Center Fürth at the telephone number +49 911 737972.

The GSD file can also be downloaded from the Internet at http://www.ad.siemens.de/csinfo/ (under “All Downloads...”).

BMP File (bitmap)

To allow graphic representation of the DP/AS-i Link 20E, some configuration tools, for example STEP 7, use bitmap files. These are also supplied on the accompanying diskette.

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1.9.2 Importing a GSD File

Entries in the Configuration Tool of the DP Master

If you have imported the GSD file into the configuration tool of your DP master, you can make various selections as follows:

S Configuration

You can choose between the following: – Max. 16/16 bytes (general identification format)

Select this configuration if your DP master can only handle DP configuration frames with a general identification format. You can then only exchange data with standard AS-i slaves or with A slaves.

– Maximum 32/32 bytes (special identification format)

Select this configuration if your DP master can handle DP configuration frames with a special identification format. In this case, you can use the entire binary data interface of the DP/AS Interface Link 20E.

S Parameter Assignment

When setting parameters for DP operation with the DP/AS Interface Link 20E, you can select between the following operating parameters:

– DPV1 (acyclic data) enable/disable (default “disable”)

With these operating parameters, the “DPV1 disable” mode is the default. With this setting, no acyclic data transfer is possible!

If you want to use the command interface and the analog data transfer with the AS-Interface, you must select “DPV1 = enable”.

– Diagnostic Interrupt enable/disable (default “enable”)

With these operating parameters, the “Diagnostic Interrupt enable” mode is the default. With this setting, the DP/AS Interface Link 20E triggers diagnostic interrupts if an error occurs.

If you want to deactivate this response, select “Diagnostic Interrupt = disable”

– S7 mode enable/disable (default “disable”)

This operating parameter must be set to enable if an S7 device is used as the DP master and when the master is configured with STEP7 V5.0 SP2 or with an earlier version.

Caution

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Parameter Assignment/Configuration Frame

If your DP master cannot process GSD files, under some circumstances, you can enter the parameter assignment frame and configuration frame for the DP/AS-i Link 20E module when you configure the DP master. The structure of the parameter assignment and configuration frame for the DP/AS-i Link 20E module is explained in Appendix C.

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1.9.3 Configuration in STEP 7 – Basic Configuration

Configuring the DP Master System

The DP/AS-i Link 20E is taken from the hardware catalog in STEP 7 HW Config just like any other DP slave and inserted in the graphic display of the DP master system.

After you have inserted the DP/AS-i Link 20E as a DP slave, there are still no AS-i slaves to be seen in the detailed view of the station window. With this default setting, the configuration rules of “configuration by button” apply initially (see Section 1.8 ).

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Configuring the Properties of the DP Slave

To configure general information, addresses, and operating parameters, change to the properties dialog of the DP/AS-i Link 20E.

The settings you make in this dialog are adequate to start up the DP/AS-i Link 20E with a SIMATIC S7 DP master. All further configuration information relevant to the AS-i slaves can be stored on the DP/AS-i Link 20E by configuring with the button (see Section 1.8).

If you require a more detailed AS-i configuration using STEP 7, follow the instructions in the next section 1.9.4.

S ”Digital Addresses” tab

To configure the address areas for the DP input data and DP output data, change to the “Digital Addresses” tab.

Start addresses: The settings must be identical for inputs and outputs.

Pack: The address utilization is optimized; all gaps are eliminated

Reserved length:

S As default, 32 bytes are

reserved

S During packing, the area is

optimized

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S ”Operating Parameters” tab

For the protected mode, the diagnostic interrupt can be selected here.

Automatic address programming when slaves are replaced: If you replace an AS-i slave (due to a fault), the addresses are programmed automatically.

If you do not require this functionality, for example for safety reasons, the option can be deselected here.

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1.9.4 Configuring in STEP 7 – Slave Configuration

Meaning

Configuring AS-i slaves completely in STEP 7 as described below allows you to adapt the AS-Interface to the I/O address range of SIMATIC S7.

The settings you have made up to now in the basic configuration are adequate to start up the DP/AS-i Link 20E with a SIMATIC S7 DP master. All other configuration information relating to the AS-i slaves can then also be stored on the DP/AS-i Link 20E using the configuration button (see Section 1.8).

If you want to configure the AS-i slaves in greater detail in STEP 7, follow the instructions below.

Configuring AS-i Slaves

To set a specific slave configuration, take the AS-i slaves from the hardware catalog and insert them in a free line in the detailed view of the station window. This specifies the addresses of the AS-i slaves.

Notice

If you define the AS–I slave configuration in STEP 7, any button configuration on the DP/AS–I Link 20E is overwritten during the DP startup.

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There are two types of AS-i slave available: S AS-i A/B slave

AS-i slave with extended addressing mode

S AS-i standard slave or AS-i analog slave

AS-i slave for the standard address area; if you use this slave type, you cannot use an AS-i A/B slave under the same AS-i address in the B address area.

Configuring the Properties of an AS-i Slave

By configuring the properties of the AS-i slaves, you can do the following:

S Store general information for the AS-i slaves S Enter configuration data of the AS-i slaves S Specify the I/O configuration S Specify I/O address areas

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AS-i Standard Slave

The AS-i standard slave can only be placed in the A area of an AS-i address. The B area can then no longer by used with this AS-i address.

In this box, you should enter the manufacturers information for the AS-i slaves:

S I/O Configuration standardized

meaning;

S ID Code: standardized meaning; S ID1/2 Code: Extended ID code

complying with the new standard (2.1)1

As an option, you can also enable the use of startup parameters here.

Whether or not these parameters are used depends on the slave type.

1 For AS-i slaves that do not support the ID1/ID2

codes, enter the values F

Depending on the I/O configuration, you can specify the address area for input/output data here.

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Configuring Analog Slaves as Standard Slaves

If you want to configure analog slaves you should also use the AS-i standard slave. You set the properties of the analog interface using the combination of the I/O

configuration and the three ID codes. Please refer to the manual of the AS-i slave you are using for information about the parameter settings.

These parameters are specified in compliance with the DP standard V1. Example:

General I/O configuration for analog slaves.

1 For AS-i slaves that do not support the ID1/ID2

codes, enter the values F

ID codes for analog slaves that can be found in the relevant manual.

Here, for example:

S ID Code: 3h S ID1: Fh (is not evaluated)1 S ID2: 5h = 2-channel analog slave

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AS-i A/B Slave

The AS-i A/B slave can be placed either in the A area or B area of an AS-i address. The B area can only be used when no AS-i standard slave has been placed in the A area.

The parameters in this box specify the slave profile.

In addition to the I/O configuration:

S ID Code: standardized meaning; S ID1/2 Code: Extended ID code

complying with the new standard (2.1)

As an option, you can also enable the use of startup parameters here.

Whether or not these parameters are used depends on the slave type.

With A/B slaves, only three bits are available!

Bit 4 is required for the address changeover.

Depending on the I/O configuration, you can specify the address area for input/output data here.

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1.9.5 Upload Actual Configuration

Aims

You can upload the current actual configuration over the AS–i Link 20E to the open STEP 7 project.

This allows you S to read in a complex configuration and to use it as a basis for further

configuration in STEP 7;

S to check the current configuration.

Notice

The uploaded configuration is always the current actual configuration. The actual configuration can differ from the configuration set with the buttons and stored on the AS–i master, for example, when a slave was subsequently removed or added.

If you download the configuration from the STEP 7 project to the AS–i Link 20E, the configuration detected during button configuration is overwritten.

Follow the steps below

Preparation: Create and download the basic configuration:

1. Create a basic configuration by inserting the AS–i Link 20E in a DP master system of an S7–300 / S7–400 station.

2. Download this basic configuration to the S7 station with HW Config.

Uploading:

3. Then select the “Options AS–i Slaves” tab

4. Click the “Upload to PG” button. An existing defined configuration is overwritten. Prior to accepting the

configuration, you must confirm a warning.

5. Then change to the “Slave Configuration” tab to view the current actual configuration and, if necessary, edit it.

Tip: To use this function simply for information despite an existing defined configuration

in STEP 7, you can upload the actual configuration, check it and then click the “Cancel” button in the dialog.

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1.10 Transmission Rate on PROFIBUS

The DP/AS-i Link 20E supports the following transmission rates on PROFIBUS DP:

9.6 Kbps 19.2 Kbps 45.45 Kbps 93.75 Kbps 187.5 Kbps

500 Kbps 1.5 Mbps 3 Mbps 6 Mbps 12 Mbps

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This chapter contains the information you require to access the AS-Interface from the DP master via the DP/AS-Interface Link 20E (DP/AS-i Link 20E)

The chapter explains the transfer of the following:

S Binary values using the cyclic DP services S Analog values using the acyclic DP services

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2.1 Preparation for Operation – an Overview

Before putting the system into operation, the following independent steps must first be worked through:

You can configure a DP master system, for example, in HW Config of STEP 7

Configure DP master

with DP/AS-i Link as

DP slave and AS-i

Write a user program

with binary value

access for the DP

master

–> Section 2.3

For example, create a program for an S7 CPU with a DP interface in LAD/CSF/STL

Write a user program

master

–> Section 1.9

with analog value

access for the DP

master

–> Section 2.4

Putting into operation

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2.2 How the Interfaces Work

Accessing the AS-Interface via PROFIBUS DP

The DP master communicates with the AS-i slaves via the DP/AS-i Link 20E. The AS-i communication objects are mapped in one continuous data area for input data and one for output data in the DP master.

Due to its function, the DP/AS-i Link 20E must operate two interfaces:

1. Interface to the DP master : PROFIBUS-DP

2. Interface to the AS-i slaves : AS-Interface

DP master

Cyclic services

Write binary values

Read binary values

Acyclic services

write_record

S Write analog values S Command job

read_record

S Analog values S Command response

PROFIBUS AS-Interface

Interface to DP master : PROFIBUS-DP

DP/AS-i Link

ADR

DP-AS Interface

Link 20

DIA

APF

CER AUP

0910

6GK7 1415 2AA0

AS-i slaves

AS-i slave 1

X 2 3 4

AS-i slave 2

AS-i slave n

At the PROFIBUS end, the cyclic services and the acyclic services of PROFIBUS-DP V1 are used:

S Cyclic services

The cyclic services are used to transfer binary values.

S Acyclic services of PROFIBUS-DP V1

In the remainder of this description, these services are known as read_record and write_record. They are used for the following:

– The transfer of analog values – To operate the command interface

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2.3 Transferring AS-i Binary Values

Purpose

This section explains how the binary values of attached AS-i slaves can be accessed by the user program on the DP master.

Interface Between the DP Master and DP/AS-i Link 20E

Via the DP/AS-i Link 20E, the DP master accesses the binary inputs and outputs of the AS-i slaves in the cyclic DP mode. The inputs and outputs of the AS-i slaves are mapped in a continuous data area in the DP master.

DP master

Cyclic services

DP Output area

DP Input area

Figure 2-1

Write binary values

Read binary values

PROFIBUS AS-Interface

DP/AS-i Link

ADR

DP-AS Interface

Link 20

DIA

APF

CER AUP

0910

6GK7 1415 2AA0

AS-i slaves

AS-i slave 1

X 2 3 4

AS-i slave 2

AS-i slave n

From the point of view of the PROFIBUS DP master, the DP/AS-i Link 20E occupies

S A maximum of 32 input bytes and a maximum of 32 output bytes Addressing these bytes within the DP master (in the user program etc.) depends

on the PROFIBUS DP master being used. You will find examples of this below. For more detailed information, refer to /3/ and

the manuals for your PROFIBUS DP master.

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2.3.1 Addressing AS-i Slaves

Notice

The following information relating to addressing applies in this form only to button configuration (see Section 1.8 ) of the DP/AS-i Link 20E.

If you configure the AS-i slave using STEP 7, you must take into account the I/O addresses documented there (see Section 1.9.4).

Interface to the AS-i Slaves

The DP/AS-i Link 20E assigns four bits (a nibble) of input data and four bits of output data to every AS-i slave on the AS-i cable. The PROFIBUS DP master can access this data cyclically.

Addressing the AS-i Input or Output Data on the DP Master

In total, the maximum of 62 AS-i slaves occupy 32 bytes of input data and 32 bytes of output data (see table below). The start addresses of the input or output data depend on the configuration of the PROFIBUS DP master.

In SIMATIC S7, the address range selected for the input and output data area must always be identical.

Byte Number *) Bits 7–4 Bits 3–0

m+0 Status Nibble **) Slave 1 or 1A

Bit 3 | Bit 2 | Bit 1 | Bit 0

m+1 Slave 2 or 2A Slave 3 or 3A m+2 Slave 4 or 4A Slave 5 or 5A m+3 Slave 6 or 6A Slave 7 or 7A m+4 Slave 8 or 8A Slave 9 or 9A m+5 Slave 10 or 10A Slave 11 or 11A m+6 Slave 12 or 12A Slave 13 or 13A m+7 Slave 14 or 14A Slave 15 or 15A m+8 Slave 16 or 16A Slave 17 or 17A m+9 Slave 18 or 18A Slave 19 or 19A m+10 Slave 20 or 20A Slave 21 or 21A m+11 Slave 22 or 22A Slave 23 or 23A m+12 Slave 24 or 24A Slave 25 or 25A m+13 Slave 26 or 26A Slave 27 or 27A m+14 Slave 28 or 28A Slave 29 or 29A m+15 Slave 30 or 30A Slave 31 or 31A m+16 reserved Slave 1B m+17 Slave 2B Slave 3B m+18 Slave 4B Slave 5B m+19 Slave 6B Slave 7B m+20 Slave 8B Slave 9B

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m+21 Slave 10B Slave 11B m+22 Slave 12B Slave 13B m+23 Slave 14B Slave 15B m+24 Slave 16B Slave 17B m+25 Slave 18B Slave 19B m+26 Slave 20B Slave 21B m+27 Slave 22B Slave 23B m+28 Slave 24B Slave 25B m+29 Slave 26B Slave 27B m+30 Slave 28B Slave 29B m+31 Slave 30

Bit 3 | Bit 2 | Bit 1 | Bit 0

*) m = start address of the input or output data on the DP master

**) Bits 4–7 in the first byte of the input data are known as the status nibble; they are reserved for the command interface of the DP/AS-i Link 20E (see Section 3.1). Bits 4–7 in the first byte of the output data are also reserved and have no further significance.

Bits 3–0Byte Number *) Bits 7–4

Slave 31B

Bit 3 | Bit 2 | Bit 1 | Bit 0

Masking I/O Addresses

I/O addresses that are not used in the lower part of the table can be masked during DP configuration (for example in the STEP 7 configuration using the “Reserved Length” parameter (see Section 1.9.3).

Example: You are not using any B slaves as AS-i slaves with binary inputs and the highest

address of a standard slave is 20; this means that you can set the “Reserved Length” of the input data to 11.

Special Feature of AS-i Analog Slaves

If you use AS-i analog slaves complying with profile 7.3 /7.4, the following applies: S The input nibbles of these AS-i slaves are set to the value “0” by the DP/AS-i

Link 20E; S The output nibbles of these AS-i slaves are ignored by the DP/AS-i Link 20E; How to access AS-i analog slaves is described in Section 2.4.

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Example of a Configuration

Figure 2-2 shows an example of the PROFIBUS DP master addressing four AS-i slaves. In the DP master, the start addresses m = 0 are used for the I/O data.

The bits relevant for the user program (existing AS-i slaves) are shown on a gray background. The bits shown on a white background are irrelevant for the user program since no AS-i slaves are assigned here.

DP master

Data Exchange Between the DP Master and AS-i Slave

Input bytes

AS-i slaves

Figure 2-2

Output bytes

Bit 3

. . .

Bit 3

Bit 1

Bit 2

Bit 3

slave 2 slave 3

Bit 1

slave 4

Bit 1

Bit 2

Slave 30B

Bit 1

Bit 2

567

slave 1

Bit 0

Bit 3

Bit 0

slave 5

Bit 0

Bit 3

Slave 31B

Bit 3

Bit 0

Slave no. 2 Slave no. 3 Slave no. 4

4 I module 4 I/3 O module2 I/2 O module 4 O module

4 I module

Bit 2Bit 2

Bit 2

Bit 0

Bit 1Bit 2

Bit 1

Bit 0

Bit 1

Bit 0

Bit 1

234

Bit 2

Bit 3

slave 2 slave 3

Bit 2

Bit 3 Bit 1 Bit 0

slave 4

Bit 2

Bit 3

. . .

Slave 30B

Bit 3

Bit 2

Bit 1

slave 1

Bit 0 Bit 0

Bit 0

Slave no. 31B

Bit 3

Bit 1

Bit 2

Bit 1

Bit 2

slave 5

Bit 1

Bit 2

Slave 31B

Bit 2

Bit 1

Bit 0

In the figure above, for example, the 2I/2O module (AS-i slave number 3 with two inputs and two outputs) occupies bits 0 and 1 in input byte 1 and bits 2 and 3 in output byte 1.

The assignment of the AS-i terminals of the AS-i bus modules to the data bits of the input/output bytes is shown below based on the example of slave number 3:

Input byte 1

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Output byte 1

Terminal 4 on the AS-i bus module

Terminal 3 on the AS-i bus module

3 2 Bit no.

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2.3.2 Accessing AS-i Binary Data

The DP Master is the Decisive Factor

The way in which you access binary data of the AS-i slaves depends on the DP master you are using. Please refer to the relevant user documentation.

A SIMATIC S7 is the DP master

If you have configured the I/O addresses of the DP/AS-i Link 20E in the area of the process image, you can access the AS-i bit values using single bit commands.

Example (see also Figure 2-2): A I 1.0 //Attachment 1 on AS–i module 3

= Q 1.3 //Attachment 4 on AS–i module 3

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2.4 Transferring AS-i Analog Values

Purpose

This section explains how you can access analog values of attached AS-i slaves in the user program of the DP master.

Notice

The following explanations apply only to AS-i slaves that handle analog value transfer in compliance with the AS-i slave profile 7.3 or 7.4.

Analog value transfer in compliance with AS-i slave profile 7.1/7.2 is not supported by the DP/AS-i Link 20E. In this case, analog transfer must be implemented in your software.

Analog Interface Between the DP Master and DP/AS-i Link 20E

Analog values are read and written using the acyclic services of PROFIBUS-DP V1. In the user program of the DP master you use the read_record and write_record services.

You can operate up to 31 AS-i slaves each with up to 4 analog input or 4 analog output values. You access the analog values using up to 8 data records (data record numbers 140–147).

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DP master

Acyclic services

write_record

S Analog values S Command job

Data area for analog output values

Data area for analog input values

Figure 2-3

read_record

S Analog values S Command response

PROFIBUS AS-Interface

DP/AS-i Link

Data records 140–147 for analog values outputs

Data records 140–147 for analog values inputs

AS-i slaves

ADR

DP-AS Interface

Link 20

DIA SF

APF

CER AUP

X 2 3 4

0910

6GK7 1415 2AA0

AS-i slave 1

AS-i slave 2

AS-i slave n

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2.4.1 Calling Acyclic Services

DP Master with Acyclic Services

The acyclic services complying with the DP standard DP-V1 for PROFIBUS-DP allow further jobs for sending output data to the DP slaves or for receiving input data from the DP slaves in addition to cyclic data transfer.

The acyclic services are used for the following with the DP/AS-i Link 20E:

S Reading/writing analog values S Command interface (see Chapter 3)

Calls

Table 2-1

read_record SFC 59 dpc*_read write_record SFC 58 dpc*_write

Call Parameters

Certain parameters must have values assigned to specify the job. The names of these parameters and the type of parameter setting can vary depending on the type of the DP master.

The following table provides you with an overview of the parameters according to the DP-V1 specification and shows examples of how they are mapped in the parameter assignment of a user program for a SIMATIC S7 CPU and a user program for a PC/programming device in which the SIMATIC NET programming interface is used.

Call

With SIMATIC S7 With the DP programming

interface

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Table 2-2 Parameters for Sending/Receiving

DP-V1

PROFIBUS address

Slot_number Is calculated from LADDR;

Index RECNUM Index Data record number

Length RECORD

Data RECORD

SIMATIC S7 (SFC 58/59) For PC: DP programming

interface (dpc*_read/write)

LADDR (the start address of the

cyclic input bytes of the DP/AS-i Link must be specified (see also Section

1.9). The S7 CPU calculates the PROFIBUS address from this information.)

IOID The following fixed value

must be entered: B#16#54

Not an SFC parameter

Referenced using ANY pointer

RET_VAL BUSY

C_Ref PROFIBUS address of the

– Fixed value

Slot_number With DP/AS-i Link:

Length_s Length of the input/output

Data_s Address of the input/output

DP/AS-i Link (DP slave)

Any value

(140–147; see Table 2-3)

data area

Return parameter for execution check

Meaning

You will find sample programs for SIMATIC S7 in Section 2.4.3

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2.4.2 Programming

Job Parameters

Make the parameter settings for the read_record and write_record jobs as described in Section 2.4.1. Access to the analog values is controlled by the following parameters:

S Index:

Specifies the data record number in which the analog values are stored on the

DP/AS-i Link 20E. How the available data record numbers 140 to 147 are used

is explained below. S Length:

Specifies the length of the input/output data area; the specified length must be

adapted to the data record being used and the address area of the analog

slaves. This is explained in greater detail and with examples below. S Data:

Specifies the address of the input/output data area in which your user program

accesses the analog values or makes the analog values available. You will find sample calls at the end of this chapter.

Data Consistency

In terms of one AS-i slave, the analog values transferred to the DP master are always consistent.

Mapping the Analog Values in the Data Records

To access analog values, you can select one of the data records 140 to 147. The data records differ from each other in their length. This allows you to optimize the data area to be reserved in your application if you are using less AS-i analog slaves than the maximum number supported by the interface.

An 8-byte area is used for each slave address to manage 4 analog channels. Remember that slave address 31 is not used in data record 140. Table 1-1 below shows which address area in the selectable data records the

analog values of which AS-i slave are transferred to. How the analog values of an analog slave are mapped in the address areas is shown in Table 2-4.

The table can be used equally for the analog input area and the analog output area.

Following the tables, you will find notes explaining how to read the tables.

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Table 2-3 Accessing Analog Values using Data Records

Start addresses for analog values in the data record

AS-i slave

address

1 0 2 8

3 16 4 24 5 32 0 6 40 8 7 48 16 8 56 24 9 64 32 0

10 72 40 8

11 80 48 16 12 88 56 24 13 96 64 32 0 14 104 72 40 8 15 112 80 48 16 16 120 88 56 24 17 128 96 64 32 0 18 136 104 72 40 8 19 144 112 80 48 16 20 152 120 88 56 24 21 160 128 96 64 32 0 22 168 136 104 72 40 8 23 176 144 112 80 48 16 24 184 152 120 88 56 24 25 192 160 128 96 64 32 0 26 200 168 136 104 72 40 8 27 208 176 144 112 80 48 16 28 216 184 152 120 88 56 24 29 224 192 160 128 96 64 32 0 30 232 200 168 136 136 72 40 8 31 208 176 144 144 80 48 16

DS 140 DS 141 DS 142 DS 143 DS 144 DS 145 DS 146 DS 147

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Table 2-4 Address Area for the Analog V alues of an AS-i Slave

Byte no. (start address + offset)

Start address + 0 Channel 1 / high byte Start address + 1 Channel 1 / low byte Start address + 2 Channel 2 / high byte Start address + 3 Channel 2 / low byte Start address + 4 Channel 3 / high byte Start address + 5 Channel 3 / low byte Start address + 6 Channel 4 / high byte Start address + 7 Channel 4 / low byte

Analog value channel

Examples:

1. Configuration: Analog slaves have the AS-i addresses 1–6 You use data record 140 and specify 48 as the data record length.

2. Configuration: 1 analog slave with AS-i address 7 is used You use data record 141 and specify 24 as the data record length.

3. Configuration: The entire address range for 31 analog slaves is used You use data record 140 and specify 224 as the data record length. This covers

analog slaves 1–28. For the other analog slaves 29–31, you use data record 147 in a second job

and specify 24 as the data record length.

4. Configuration: Analog slaves are in the address range 29–31 You use data record 147 and specify 24 as the data record length.

Representation of the Analog Values

According to slave profile 7.3 or 7.4, the analog values are interpreted as 16-bit values in two’s compliment

For further information regarding the range of values, the measurement range and the accuracy please refer to the relevant documentation of the analog slaves.

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Special Situations in Analog Value Transfer

S In the input direction (read_record), the DP/AS-i Link 20E supplies the value

7FFFh in the following situations: – The AS-i slave does not exist, has failed, or is not an analog slave

complying with profile 7.3 or 7.4. – The channel number is not supported by the analog slave. – The analog slave signals “Value Invalid”.

S In the input direction (read_record) the DP/AS-i Link 20E supplies the value 0h

when the analog slave supplies transparent data complying with profile 7.3 (ext. ID2 code, Bit 2=1) and when

– This analog slave has failed – This analog slave signals “Value Invalid”.

S In the output direction (write_record) the DP/AS-i Link 20E behaves as follows:

– In the CLEAR status of the DP master (corresponds to the STOP state of a

PLC), the DP/AS-i Link 20E stops transfer of the analog output values. How

the analog slave reacts depends on the particular device. – When the DP/AS-i Link 20E starts up, all analog output values are set to

7FFFh. This value is, however, only sent by the DP/AS-i Link 20E after the

first data record transfer for the relevant analog slaves.

Note

In SIMATIC S7, the number of simultaneously active read_record and write_record jobs is restricted. The maximum permitted number depends on the particular S7 CPU.

If more than the maximum number of jobs are triggered, they are terminated with the error 80C3h (temporary lack of resources). The rejected job must then be repeated.

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2.4.3 Programming Examples

Example of Programming for a SIMATIC S7

An analog input value of AS-i analog slave 6 is transferred as an analog output value to AS-i analog slave 9:

Table 2-5

STL Explanation

L DB40.DBW 10 T DB40.DBW 32

//Slave 6, input channel 2 //Slave 9, output channel 1

CALL SFC 59 REQ :=TRUE IOID :=B#16#54 LADDR :=W#16#120 RECNUM :=B#16#8D RET_VAL :=MW130 BUSY :=M129.0 RECORD :=P#DB40.DBX 0.0 BYTE 32

CALL SFC 58 REQ :=TRUE IOID :=B#16#54 LADDR :=W#16#120 RECNUM :=B#16#8E RECORD :=P#DB40.DBX 32.0 BYTE 32 RET_VAL :=MW132 BUSY :=M129.1

//RD_REC

//Fixed value //Start of cyclic input data //DS141 (slave 5 and following) //Return parameter //Return parameter //Receive buffer (slaves 5...8)

//WR_REC

//Fixed value //Start of cyclic input data //DS142 (slave 9 and following) //Send buffer (slaves 9...12) //Return parameter //Return parameter

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2.5 PROFIBUS DP Control Commands

The DP/AS-i Link 20E supports all the control commands defined in the PROFIBUS DP standard:

Table 2-6

Control command

FREEZE The values of the binary input data of the AS-i slaves are frozen by the

DP/AS-i Link 20E. The DP/AS-i Link 20E updates this data once with each

further FREEZE. UNFREEZE The FREEZE command is canceled. SYNC The values of the binary output data are frozen by the DP/AS-i Link 20E. The

DP/AS-Interface Link 20 updates this data once with each further SYNC. UNSYNC The SYNC command is canceled. CLEAR The values of the binary output data passed on by the DP/AS-i Link 20E to the

AS-i slaves are set to ’0’ by the DP/AS-i Link 20E.

Effect

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Using the Command Interface

Via the command interface, you can control the response of the AS-i master completely from within your user program.

This chapter contains the information you require to access the command interface of the DP/AS-Interface Link 20E from your DP master.

Apart from a detailed description of the commands, the two interface variants are explained in detail as follows:

S The command interface of the DP/AS-Interface Link 20E S The command interface with SIMATIC S7

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Using the Command Interface

3.1 Command Interface of the DP/AS-Interface Link 20E

Note

A special function block (FC ASI_3422) is available for the AS-i commands in a SIMATIC S7 DP master. This FC handles the command protocol described below independently (see Section 3.2).

You will find FC ASI_3422 in the programming example on the diskette supplied with the printed version of this manual.

Significance and Functionality

Via the command interface, you can control the response of the AS-i master completely from within your user program.

AS-i commands are read and written using the acyclic services of PROFIBUS-DP V1. In the user program on the DP master, you use the services read_record and write_record (data record 2).

DP master

Acyclic services

write_record

S Command job

Send buffer

Receive buffer for response data or error/status information

Figure 3-1

Status nibble in the DP input area

Status information

read_record

S Command response

PROFIBUS AS-Interface

DP/AS-i Link

Data record 2

AS-i slaves

ADR

DP-AS-Interface

Link 20

DIA SF

APF

CER AUP

0910

X 2 3 4

6GK7 1415 2AA0

AS-i slave 1

AS-i slave 2

AS-i slave n

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Job Parameters

Set the parameters for the read_record and write_record jobs as described in Section 2.4.1. Sending the commands is controlled by the following parameters:

S Index:

Specifies the data record number = 2

S Length:

– The length of the data sent (with write_record) depends on the command; – The length of the data received (with read_record) is indicated by the

DP/AS-i Link 20E using the status nibble.

Commands in the User Program

To work with commands, include the following in your user program:

1. Specify the command call in a send buffer in the user program.

2. Send this job with write_record (record 2) to the DP/AS-i Link 20E.

Using the Command Interface

3. Following this, query the status of command processing in the input area for binary values (cyclic services – see Section 2.1). The status information is entered in bits 4 to 7 in the reserved first byte of the DP input area (status nibble).

4. Various reactions are possible depending on the result of the status evaluation as shown in the following flowchart (for more detailed information on the meaning of the status nibble, please refer to Table 3-1).

To complete command processing, you must always sent a read_record job (data record 2) either to obtain further status information or to receive response data.

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Using the Command Interface

Evaluate status nibble

Command processing active

Further evaluation of status

nibble necessary

Read_record:

2–byte return value

Terminated with error

Figure 3-2

Table 3-1 Coding of the Status Nibble

Command processing completed

Completed without error and without response data

Completed without error and

with response data or terminated with error

Read_record:

n bytes of response data

Completed without error and without response data

New command call (write_record) possible

Status nibble (1st byte of

Meaning

the digital input data)

Bit 7 Bit 6 Bit 5 Bit 4 1 0 0 0 Startup ID 1:

Following a startup/restart of the AS-i master, the status nibble changes between the values 1000 B and 1110 B.

It is possible to trigger a command with the user program

1 1 1 0 Startup ID 2:

Following a startup/restart of the AS-i master, the status nibble changes between the values 1000 B and 1110 B.

It is possible to trigger a command with the user program

1 1 0 0 Reserved for SIMATIC S7 application FC “ASI_3422”

It is possible to trigger a command with the user program

0 0 1 0 Command processing active

It is not possible to trigger a command with the user program

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Table 3-1 Coding of the Status Nibble, continued

Using the Command Interface

Status nibble (1st byte of

Meaning

the digital input data)

0 0 0 1 Command processing is completed. With an asynchronous read job, a

2-byte return value can be fetched by the AS-i master. Two situations must be distinguished:

The return value is 0: A command without response data was completed without error

The return value is a value not equal to 0: The command was terminated with error.(See Table 3-3)

A new command can be triggered by the user program

0 0 1 1 Command processing was completed without error. Using an

asynchronous read job, 1 byte of response data can be fetched by the AS-i master.

A new command can be triggered by the user program

0 1 0 1 Command processing was completed without error. Using an

asynchronous read job, 4 bytes of response data can be fetched by the AS-i master.

A new command can be triggered by the user program

0 1 1 1 Command processing was completed without error. Using an

asynchronous read job, 14 bytes of response data can be fetched by the AS-i master.

A new command can be triggered by the user program

1 0 0 1 Command processing was completed without error. Using an

asynchronous read job, 16 bytes of response data can be fetched by the AS-i master.

A new command can be triggered by the user program

1 0 1 1 Command processing was completed without error. Using an

asynchronous read job, 32 bytes of response data can be fetched by the AS-i master.

A new command can be triggered by the user program

1 1 0 1 Command processing was completed without error. Using an

asynchronous read job, 56 bytes of response data can be fetched by the AS-i master.

A new command can be triggered by the user program

1 1 1 1 Command processing was completed without error. Using an

asynchronous read job, 221 bytes of response data can be fetched by the AS-i master.

A new command can be triggered by the user program

0 1 0 0 Job processing is completed. The response data or the return value of the

previous job have already been read by the user. A new command can be triggered by the user program

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Example:

Based on the following table, you can see how the display in the status nibble changes due to the device state and the command processing in the user program.

Table 3-2

Action

Reaction in the Status Nibble

1. AS-i power supply switched on for the DP/AS-iLink 20E. 1110B....1000B.....1110B....

2. The user program transfers a command (for example write_parameter) with an asynchronous write job to the

0010B (briefly, depending on the command)

DP/AS-i Link 20E.

3. The AS-i master completes the command. The return value can

0001

be read by the user program.

4. The user program reads a 2-byte return value using an

0100

asynchronous read job.

5. ....further program execution ... ....

6. The user program transfers a command (for example, Get_LPS, Get_LAS, Get_LDS, Get_Flags) with an asynchronous write

0010B (briefly, depending on the command)

access to the DP/AS–i Link 20E.

7. The AS-i master completes the command without error. The

1011

response data can be read by the user program

8. The user program reads 32 bytes of response data with an

0100

asynchronous read job.

Return Value

Error free processing is encoded in the return value of the response buffer. There is an error when value in the status nibble is “completed without error and without response data or terminated with error” (Coding: 0001H).

Table 3-3 Return Value in the Response Buffer

STATUS

0000H Job completed without error

8381H The AS-i slave address is incorrect 8382H The AS-i slave is not activated (not in LAS). 8383H Error on AS-Interface. 8384H Command not permitted in the current status of the AS-i master. 8385H An AS-i slave with address 0 exists. 8386H The AS-i slave has illegal configuration data (I/O or ID codes).

83A1H The addressed AS-i slave was not found on the AS-Interface. 83A2H An AS-i slave with address 0 exists.

Meaning

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Table 3-3 Return Value in the Response Buffer, continued

STATUS Meaning

83A3H An AS-i slave with the new address already exists on the AS-Interface. 83A4H The AS-i slave address cannot be deleted. 83A5H The AS-i slave address cannot be set. 83A6H The AS-i slave address cannot be stored permanently. 83A7H Error reading the extended ID1 code. 83A8H The target address is not plausible (for example a B slave address was used for a

standard slave). 83B1H A length error has occurred transferring a string according to profile 7.4. 83B2H A protocol error has occurred transferring a string according to profile 7.4. 83F8H The job number or the job parameter is unknown. 83F9H The AS-i master has detected an EEPROM error.

Note

Errors that occur during processing of the acyclic services and that are indicated by call parameters such as “Return Value” can be found in the documentation of the relevant programming interface.

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3.2 Command Interface for SIMATIC S7

Purpose

In SIMATIC S7, a convenient command interface is available with FC ASI_3422. By calling FC ASI_3422, you can handle both the transfer of the command and the

acceptance of the response data. After it has been called, FC ASI_3422 instigates and handles the write_record and read_record calls independently.

Call Interface

ASI_3422

STATUS

DONE

BOOL BOOL

DWORD

BOOL

WORD

ANY

DWORD

ACT STARTUP ERROR

LADDR SEND

RECVANY

Table 3-4 Formal Parameters

Name

Para Type Data Type Memory Area Remarks

ACT I BOOL I,Q,M,D,L,constant As long as ACT = 1, command

processing is started provided no other call is being processed.

STARTUP I BOOL I,Q,M,D,L,constant A CPU startup is indicated to the FC by

STARTUP = 1. After the function is run through the first time, STARTUP must be reset by the user.

LADDR I WORD I,Q,M,D,L,constant Start address of the DP/AS-i Link 20E

in the S7 address area. The module start address is specified

during STEP 7 configuration.

SEND I ANY I,Q,M,D,L Send buffer

The parameter references a memory area in which the command must be specified by the user.

for example: P#DB20.DBX 20.0 byte 10

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Table 3-4 Formal Parameters, continued

Name RemarksMemory AreaData TypePara Type

RECV I ANY I,Q,M,D,L Receive buffer

This buffer is only relevant for commands that supply response data. The parameter references a memory area in which the command response is stored. The length information in the ANY pointer specified here is irrelevant. The FC itself obtains the length of the response data.

for example: P#DB30.DBX 20.0 byte 1

DONE Q BOOL Q,M,D,L DONE = 1 signals ’job completed

without error’.

ERROR Q BOOL Q,M,D,L ERROR = 1 signals ’job terminated

with error’.

STATUS I/Q DWORD M,D 1st word: Job status / error code (see

Table 3-5); For ’job terminated with error’, an error

code is generated that describes the error in greater detail.

2nd word: Required by the FC for internal purposes and must not be modified.

Note: For FC calls to different

DP/AS-i Link 20E modules, different double words must be used for the ST ATUS parameter.

Commands in the User Program

To work with commands, you require the following in your user program:

1. In the warm restart branch of your S7 user program, call FC ASI_3422 once with the parameter value STARTUP = TRUE.

2. Specify the command call in a send buffer in the user program. You transfer this send buffer with the SEND call parameter.

3. Depending on the command type you will also require a response buffer. You transfer this response buffer with the RECV call parameter. For status information, the response buffer is not required for this FC interface.

4. Activate the job with the parameter ACT=1

5. You then query the parameters DONE, ERROR and STATUS. For handling these parameters in the user program, note the signal sequence of the parameters explained below.

The diskette supplied with this manual contains sample programs.

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Points to Note

S If you use the FC interface FC ASI_3422 for command processing, you must

not send other commands via the read_record and write_record with data record number 2 at the same time.

S You must use version 2.0 or higher of the FC ASI_3422 S FC ASI_3422 is not reentrant! FC calls must not be programmed in priority

classes that can interrupt each other (for example by a call in OB1 and in OB35).

S In SIMATIC S7, the number of simultaneously active read_record and

write_record jobs is restricted. The maximum number of jobs depends on the S7 CPU.

If more jobs are triggered, these are terminated with the error 80C3h (temporary lack of resources). The rejected job must then be repeated.

Signal Sequence of the Formal Parameters ACT, DONE, ERROR and STATUS

ACT

DONE

ERROR

A command call is started by ACT = 1. During the processing of the job, the first word of STATUS has the value 8181H. This indicates that a job is being processed. On completion of the job, the user is informed of the result in the DONE or ERROR parameters.

If no error occurred, DONE is set. In jobs involving response data from the DP/AS-i Link 20E, these are available in the receive buffer specified for RECV. In this case, 0000H is entered in the first word of STATUS.

If an error occurred, ERROR is set. In this case, no receive data are available from the DP/AS-i Link 20E for jobs with response data. To identify the error in greater detail, an error code is entered in the first word of STATUS.

The DONE, ERROR and STATUS parameters remain unchanged until the next job is processed.

STATUS 8181h 0000h 8181h 0000h 8181h

Figure 3-3

8181h

8381h

0000h

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0000h

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Table 3-5 Error Coding

Using the Command Interface

DONE

ERROR STATUS Meaning

1 0 0000H Job completed without error 0 1 8090H Address in LADDR invalid 0 1 8092H A type other than BYTE is specified in the ANY reference. 0 1 8093H This SFC is not permitted for the module selected with

LADDR and IOID. (S7-300 modules are permitted for S7-300, S7-400 modules for S7-400, S7-DP modules for

S7-300 and S7-400.) 0 1 80A0H Negative acknowledgment when reading from AS-i master. 0 1 80A1H Negative acknowledgment when writing to AS-i master 0 1 80A2H DP protocol error at Layer 2 0 1 80A3H DP protocol error involving user interface/user 0 1 80A4H Communication problems on K bus 0 1 80B0H AS-i master does not recognize the data record 0 1 80B1H Specified data record length incorrect 0 1 80B2H The configured slot is not in use. 0 1 80B3H Actual module type does not match the expected module

type in SDB1 0 1 80C0H Data record cannot be read 0 1 80C1H The specified data record is currently being processed 0 1 80C2H There is a job pileup 0 1 80C3H Resource (memory) in use 0 1 80C4H Communication error 0 1 80C5H Distributed I/Os not available 0 1 80C6H Data record transfer aborted due to priority class abort

(warm restart or background) of the distributed I/Os. 0 0 8181H Job active (no error) 0 1 8182H ID following warm restart (STARTUP=TRUE) 0 1 8184H Data type of the RECV formal parameter illegal 0 1 8381H The AS-i slave address is incorrect 0 1 8382H The AS-i slave is not activated (not in LAS). 0 1 8383H Error on the AS-Interface 0 1 8384H Command not permitted in the current status of the AS-i

master. 0 1 8385H An AS-i slave with address 0 exists.

8386H The AS-i slave has illegal configuration data (I/O or ID

codes). 0 1 83A1H The addressed AS-i slave was not found on the

AS-Interface. 0 1 83A2H An AS-i slave with address 0 exists.

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Table 3-5 Error Coding, continued

DONE MeaningSTATUSERROR

0 1 83A3H An AS-i slave with the new address already exists on the

AS-Interface. 0 1 83A4H The AS-i slave address cannot be deleted. 0 1 83A5H The AS-i slave address cannot be set. 0 1 83A6H The AS-i slave address cannot be stored permanently. 0 1 83A7H Error reading the extended ID1 code. 0 1 83A8H The target address is not plausible (for example a B slave

address was used for a standard slave). 0 1 83B1H A length error has occurred transferring a string according

to profile 7.4. 0 1 83B2H A protocol error has occurred transferring a string

according to profile 7.4. 0 1 83F8H The job number or the job parameter is unknown. 0 1 83F9H The AS-i master has detected an EEPROM error. 0 1 8F22H Area length area reading a parameter

8F23H Area length error writing a parameter

This error code indicates that a parameter is entirely or

partly outside the address area or that the length of a bit

array of an ANY parameter cannot be divided by 8. 0 1 8F24H Area error reading a parameter

8F25H Area error writing a parameter

This error codes indicates that a parameter is located in an

area that is illegal for a system function. 0 1 8F28H Alignment error reading a parameter

8F29H Alignment error writing a parameter

This error code indicates that the reference to a parameter

is a bit address other than 0. 0 1 8F30H The parameter is in the write-protected global DB

8F31H The parameter is in the write-protected instance DB

This error code indicates that a parameter is located in a

write-protected data block. 0 1 8F32H The DB number in the parameter is too high 0 1 8F3AH The parameter contains the number of a DB that is not

loaded 0 1 8F42H An access error has occurred while the system attempted

to read out a parameter from the peripheral area of the

inputs. 0 1 8F43H An access error occurred while the system was attempting

to write a parameter to the peripheral area of the outputs

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Table 3-5 Error Coding, continued

DONE MeaningSTATUSERROR

0 1 8F44H This parameter code indicates that read access to a

parameter was denied

0 1 8F45H This error code indicates that write access to a parameter

was denied

0 1 8F7FH Internal error

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3.3 Description of the AS-i Slave Commands

Overview

This section describes the command calls that can be sent by the DP master to the DP/AS-i Link 20E. With these command calls, the DP/AS-i Link 20E provides the complete functionality of the master profile M1e of the AS-i master specification. In addition to this, the DP/AS-i Link 20E can be configured completely by the DP master using command calls.

The use of the jobs is described in the individual descriptions of the jobs themselves, in the PICS appendix and in the detailed explanations in /1/ and /2/.

The available commands are listed in the table below:

Table 3-6 AS-i Slave Commands

Name

Set_Permanent_Parameter –> described in Section 3.3.1

Get_Permanent_Parameter –> described in Section 3.3.2

Write_Parameter –> described in Section 3.3.3

Read_Parameter –> described in Section 3.3.4

Store_Actual_Parameters –> described in section 3.3.5

Set_Extended_Permanent_Configurati on –> described in section 3.3.6

Get_Extended_Permanent_Configurati on –> described in section 3.3.7

Store_Actual_Configuration –> described in Section 3.3.8

Get_Extended_Actual_Configuration –> described in section 3.3.9

Set_LPS –> described in section 3.3.10

Set_Offline_Mode –> described in section 3.3.11

Select_Autoprogramming –> described in section 3.3.12

Set_operation_mode –> described in section 3.3.13

Parameter Return Coding

Slave address,

parameter Slave address Parameter 01

Slave address, parameter

Parameter echo (optional)

Slave address Parameter value 03

Slave address 25

Slave address,

specified configuration 26

configuration

Slave address actual configuration 28

LPS 29

Mode 0A

Mode 0B

Mode 0C

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Table 3-6 AS-i Slave Commands, continued

Name CodingReturnParameter

Change_AS-i_Slave_Address –> described in Section 3.3.14

Get_AS-i_Slave_Status

Address 1, Address2

Slave address Error record of the AS-i

–> described in Section 3.3.15 Get_LPS, Get_LAS, Get_LDS,

None LDS, LAS, LPS, flags 30

Get_Flags –> described in section 3.3.16

Get_Extended_Total_Configuration –> described in section 3.3.17

Store_Extended_Total_Configuration –> described in section 3.3.18

Write_Extended_Parameter_List

Total configuration

Parameter list 3C

–> described in Section 3.3.19 Read_Extended_Parameter_Echo_List

–> described in section 3.3.20 Read_Version_ID

–> described in section 3.3.21 Read_AS-i_Slave_ID

Slave address ID*Code 17

–> described in section 3.3.22 Read_AS-i_Slave_Extended_ID1

Slave address Extended ID1 code 37

–> described in section 3.3.23 Write_AS-i_Slave_Extended_ID1

–> described in section 3.3.24 Read_AS-i_Slave_Extended_ID2

Extended ID1 code

Slave address Extended ID2 code 38

–> described in section 3.3.25 Read_AS-i_Slave_I/O

Slave address I/O configuration 18

–> described in section 3.3.26 Get_LPF

–> described in section 3.3.27 Write_AS-i_Slave_Parameter_String

–> described in section 3.3.28 Read_AS-i_Slave_Parameter_String

Slave address, parameter string

Slave address Parameter string 41

–> described in section 3.3.29 Read_AS-i_Slave_ID_String

Slave address ID string 42

–> described in section 3.3.30 Read_AS-i_Slave_Diagnostic_String

Slave address Diagnostic string 43

–> described in section 3.3.31

Using the Command Interface

slave

Actual configuration, current parameters, LAS, flags

Parameter echo list 33

Versions*String 14

LPF

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General Structure of the Send Buffer

The basic structure of the send buffer for commands is shown below. The bytes only relevant with certain commands are shown on a gray background.

Byte Meaning

q+0 Command number q+1 Job data

q+... Job data

q = start address of the send buffer on the DP master

General Structure of the Receive Buffer

The basic structure of the response buffer is shown below. The bytes only relevant with certain commands are shown on a gray background.

Byte Meaning

n+0 Response data n+1 Response data

n+... Response data

n = start address of the response buffer on the DP master

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General Structure of the AS-i Slave Address

If an AS-i slave is addressed in a command or in a response, the address is structured as shown below:

Bit 7 Bit 6 Bit 5 Bit 4 Bit 0

S bit Slave address

Where the S(elect) bit for selecting the slave type is specified as follows: S S bit = 0

Standard AS-i slave or AS-i slave with extended addressing mode in address area A

S S bit = 1

AS-i slave with extended addressing mode in address area B

Using the Command Interface

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3.3.1 Set_Permanent_Parameter

Purpose

With this call, a parameter value for the specified AS-i slave is configured on the DP/AS-i Link 20E. The value is stored permanently in the EEPROM of the DP/AS-i Link 20E.

The configured parameter is not transferred immediately by the DP/AS-i Link 20E to the AS-i slave. The configured parameter value is only transferred when the AS-i slave is activated after turning on the power supply on the DP/AS-i Link 20E.

This call is not permitted for AS-i slaves that comply with the AS-i slave standard profile 7.4. For these AS-i slaves, the AS-i master handles the AS-i slave parameter assignment itself. In this case, the configured parameters are always set to FH.

Note

If you use CPUs from the SIMATIC S7 system as the PROFIBUS DP master, then dependent on the configuration in STEP 7, these may send a complete AS-i slave configuration to the DP/AS-i Link 20E during the DP startup. Use of the call described here is then generally unnecessary.

Structure of the Job Data in the Send Buffer

Byte Meaning

Bit 7 Bit 4 Bit 3 Bit 0

0 Command number: 00 1 Slave address 2 irrelevant Parameter

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3.3.2 Get_Permanent_Parameter

Purpose

With this call, a slave-specific parameter value stored on the EEPROM of the DP/AS-i Link 20E is read.

Structure of the Job Data in the Send Buffer

Byte Meaning

0 Command number: 01 1 Slave address

Using the Command Interface

Structure of the Response Data in the Receive Buffer

Byte Meaning

Bit 7 Bit 4 Bit 3 Bit 0

0 reserved configured parameters

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3.3.3 Write_Parameter

Purpose of the Command

The AS-i slave parameter value transferred with the command is passed on to the addressed AS-i slave.

The parameter is stored on the DP/AS-i Link 20E only temporarily and is not entered as a configured parameter in the EEPROM!

The AS-i slave transfers its current parameter value in the response (parameter echo). This can deviate from the value that has just been written according to the AS-i master specification (/2/). The AS-i slave response is returned as a parameter echo in the response data.

This call is not permitted for AS-i slaves that comply with the AS-i slave standard profile 7.4. For these slaves, the AS-i master handles the AS-i slave parameter assignment itself.

Structure of the Job Data in the Send Buffer

Byte Meaning

Bit 7 Bit 4 Bit 3 Bit 0

0 Command number: 02 1 Slave address 2 irrelevant Parameter

Structure of the Response Data in the Receive Buffer

Byte Meaning

Bit 7 Bit 4 Bit 3 Bit 0

0 reserved Parameter echo

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3.3.4 Read_Parameter

Purpose

This call returns the current parameter value (actual parameter) of an AS-i slave sent by the DP/AS-i Link 20E.

This value must not be confused with the parameter echo that is supplied by the AS-i slave as a response to the write_parameter job.

Structure of the Job Data in the Send Buffer

Byte Meaning

0 Command number: 03 1 Slave address

Using the Command Interface

Structure of the Response Data in the Receive Buffer

Byte Meaning

Bit 7 Bit 4 Bit 3 Bit 0

0 reserved Parameter

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3.3.5 Store_Actual_Parameters

Purpose

With this call, the configured parameters stored on the EEPROM are overwritten with the current, permanently stored (actual) parameters; in other words, the parameters of all the AS-i slaves are configured. For AS-i slaves that comply with the AS-i slave standard profile 7.4, the AS-i master manages the AS-i slave parameter assignment itself. The configured parameters for these AS-i slaves always have the value FH.

Structure of the Job Data in the Send Buffer

Byte Meaning

0 Command number: 04

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3.3.6 Set_Extended_Permanent_Configuration

Purpose

This call sets the following configuration data for the addressed AS-i slave.

S I/O configuration S ID code S Extended ID1 code S Extended ID2 code

The configuration data are stored permanently on the EEPROM of the DP/AS-i Link 20E and are used as the expected configuration by the AS-i master in the protected mode. The configuration data are specified by the manufacturer of the AS-i slave. The meaning of the configuration data is described in /2/.

If the addressed AS-i slave does not support an extended ID code 1/2, the value FH must be specified.

Using the Command Interface

When this command is executed, the AS-i master changes to the offline phase and then changes back to the normal mode (warm restart on the AS-i master).

This call is not made in the protected mode.

Note

Structure of the Job Data in the Send Buffer

Byte Meaning

Bit 7 Bit 4 Bit 3 Bit 0

0 Command number 25 1 Slave address 2 ID code I/O configuration 3 Extended ID1 code Extended ID2 code

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3.3.7 Get_Extended_Permanent_Configuration

Purpose

This call reads the following configuration data (configured data) of an addressed AS-i slave stored on the EEPROM of the AS-i master.

S I/O configuration S ID code S Extended ID1 code S Extended ID2 code

The configuration data are specified by the manufacturer of the AS-i slave. The meaning of the configuration data is described in /2/.

Structure of the Job Data in the Send Buffer

Byte Meaning

0 Command number 26 1 Slave address

Structure of the Response Data in the Receive Buffer

Byte Meaning

Bit 7 Bit 4 Bit 3 Bit 0

0 ID code I/O configuration 1 Extended ID1 code Extended ID2 code 2 reserved 3 reserved

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3.3.8 Store_Actual_Configuration

Purpose of the Command

With this call, the (actual) configuration data (I/O configuration, ID code, extended ID1 code and extended ID2 code) of all AS-i slaves are stored permanently in the EEPROM as the (expected) configuration data. The list of activated AS-i slaves (LAS) is adopted in the list of permanent AS-i slaves (LPS).

When this command is executed, the AS-i master changes to the offline phase and then changes back to the normal mode (warm restart on the AS-i master).

The call is not executed in the protected mode.

Note

Using the Command Interface

Structure of the Job Data in the Send Buffer

Byte Meaning

0 Command number: 07

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3.3.9 Get_Extended_Actual_Configuration

Purpose of the Command

With this call, the following configuration data of an addressed AS-i slave obtained by the AS-i master on the AS-Interface are read.

S I/O configuration S ID code S Extended ID1 code S Extended ID2 code

The configuration data are specified by the manufacturer of the AS-i slave. The meaning of the configuration data is described in /2/.

Structure of the Job Data in the Send Buffer

Byte Meaning

0 Command number 28 1 Slave address

Structure of the Response Data in the Receive Buffer

Byte Meaning

Bit 7 Bit 4 Bit 3 Bit 0

0 ID code I/O configuration 1 Extended ID1 code Extended ID2 code 2 reserved 3 reserved

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3.3.10 Set_LPS

Purpose of the Command

With this call, the list of configured AS-i slaves is transferred for permanent storage in the EEPROM of the master.

When this command is executed, the AS-i master changes to the offline phase and then changes back to the normal mode (warm restart on the AS-i master).

The call is not executed in the protected mode.

Note

Using the Command Interface

Structure of the Job Data in the Send Buffer

Byte Meaning

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

0 Command number 29 1 2 irrelevant Slave 1 Slave 2 Slave 3 Slave 4 Slave 5 Slave 6 Slave 7 3 Slave 8 Slave 9 Slave 10 Slave 11 Slave 12 Slave 13 Slave 14 Slave 15 4 Slave 16 Slave 17 Slave 18 Slave 19 Slave 20 Slave 21 Slave 22 Slave 23 5 Slave 24 Slave 25 Slave 26 Slave 27 Slave 28 Slave 29 Slave 30 Slave 31 6 irrelevant Slave 1B Slave 2B Slave 3B Slave 4B Slave 5B Slave 6B Slave 7B 7 Slave 8B Slave 9B Slave

10B

8 Slave

16B

9 Slave

2B4

Slave

17B

Slave

25B

Slave

18B

Slave

26B

Slave 11B Slave

00H

Slave

19B

Slave

27B

The bits in the LPS data have the following meaning: 0: AS-I slave not configured 1: AS-I slave configured.

12B

Slave

20B

Slave

28B

Slave

13B

Slave

21B

Slave

29B

Slave

14B

Slave

22B

Slave

30B

Slave

15B

Slave

23B

Slave

31B

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3.3.11 Set_Offline_Mode

Purpose

This call switches between the online and offline mode. The online mode is the normal operating situation for the AS-i master. Here, the

following jobs are processed cyclically: S During the data exchange phase, the fields of the output data are transferred to

the slave outputs for all AS-i slaves in the LAS. The addressed AS-i slaves transfer the values of the slave inputs to the master when the transfer was free of errors.

S This is followed by the inclusion phase in which there is a search for the existing

AS-i slaves and newly added AS-i slaves are entered in the LDS or LAS.

S In the management phase, jobs from the user such as writing parameters are

executed.

In the offline mode, the DP/AS-i Link 20E only processes jobs from the user. (Jobs that involve the immediate addressing of an AS-i slave are rejected with an error.) There is no cyclic data exchange with the AS-i slaves.

The OFFLINE=TRUE bit is not permanently stored; in other words, following a cold/warm restart, the DP/AS-i Link 20E is once again in the online mode.

Structure of the Job Data in the Send Buffer

Byte Meaning

Bit 7 Bit 1 Bit 0

0 Command number: 0A 1 reserved Mode

(0=online 1=offline)

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3.3.12 Select Autoprogramming

Purpose

This call can enable or disable the “automatic address programming” function (see also section 5.1).

The AUTO_ADDR_ENABLE bit is stored permanently; in other words, it is retained after a warm/hot restart on the AS-i master.

Structure of the Job Data in the Send Buffer

Byte Meaning

Bit 7 Bit 1 Bit 0

0 Command number: 0B 1 reserved V alue for AUTO_ADDR_ENABLE

Using the Command Interface

1= Automatic address program-

ming enabled

0= Automatic address program-

ming disabled

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Using the Command Interface

3.3.13 Set_Operation_Mode

Purpose of the Command

This call changes the module between the configuration mode and the protected mode.

In the protected mode, only AS-i slaves are activated that are entered in the LPS and whose expected and actual configurations match, in other words, when the I/O configuration and ID codes of the detected AS-i slaves are identical to the configured values.

In the configuration mode, all detected AS-i slaves (except for AS-i slave “0”) are activated. This also applies to AS-i slaves in which there are differences between the expected and actual configuration.

The “OPERATION MODE” bit is stored permanently; in other words, it is retained following a cold/warm restart.

When you change from the configuration mode to the protected mode, there is a warm restart on the AS-i master (change to the offline phase followed by a change to the online mode).

Notice

If an AS-i slave with address 0 is entered in the LDS, the DP/AS-i Link 20E module cannot change from the configuration mode to the protected mode.

Structure of the Job Data in the Send Buffer

Byte Meaning

Bit 7 Bit 1 Bit 0

0 Command number: 0C 1 reserved Operating mode

0= Protected mode

1=Configuration mode

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3.3.14 Change_AS-i_Slave_Address

Purpose of the Command

With this call, the AS-i address of an AS-i slave can be modified. This call is mainly used to add a new AS-i slave with the default address “0” to the

AS-Interface. In this case, the address is changed from “AS-i slave address old”=0 to AS-i slave address new”.

This change can only be made when the following conditions are fulfilled:

1. An AS-i slave with “AS-i slave address old” exists.

2. If the old AS-i slave address is not equal to 0, then an AS-i slave with address 0 cannot be connected at the same time.

3. The “AS-i slave address new” must have a valid value.

4. An AS-i slave with “AS-i slave address new” must not exist.

Using the Command Interface

Note: When the AS-I slave address is changed, the AS-i slave is not reset, in other words, the output data of the AS-i slave are retained until new data are received at the new address.

Structure of the Job Data in the Send Buffer

Byte Meaning

0 Command number: 0D 1 Slave address old 2 Slave address new

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3.3.15 Get_AS-i_Slave_Status

Purpose

With this call, the status register of the addressed AS-i slave can be read out. Depending on the type of AS-i slave, the flags of the status register have the

following meaning:

Status Bit

S 0 Address volatile Address/ID code volatile

AS-i slave complying with standard 2.0 AS-i slave complying with standard

2.1

This flag is set when

S the internal slave routine for permanent storage of the AS-i slave address is

active. This can take up to 15 ms and must not be interrupted by a further addressing call.

S the AS-i internal slave address comparison recognizes that the stored

address is not the same as the entry in the address register.

S 1 Parity error detected

This flag is set when the AS-i slave has recognized a parity error in a received frame since the last “read and delete status” job.

S 2 End bit error detected

This flag is set when the AS-i slave has recognized an end bit error in a frame since the last “read and delete status” job.

S 3 Read error in non-volatile memory

This bit is set when the AS-i slave has detected a read error when reading the non-volatile memory.

I/O error detected

An AS-i slave can set this flag when it has detected and error (for example wire break) in the attached I/Os.

reserved

Structure of the Job Data in the Send Buffer

Byte Meaning

0 Command number: 0F 1 Slave address

Structure of the Response Data in the Receive Buffer

Byte Meaning

Bit 7 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

0 0 S 3 S 2 S 1 S 0

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3.3.16 Get_LPS, Get_LAS, Get_LDS, Get_Flags

Purpose

With this call, the following entries are read out of the DP/AS-i Link 20E:

S The list of active AS-i slaves (LAS) S The list of detected AS-i slaves (LDS) S The list of permanent AS-i slaves (LPS) S the flags according to the AS-i slave specification

Structure of the Job Data in the Send Buffer

Byte Meaning

0 Command number: 30

Using the Command Interface

Structure of the Response Data in the Receive Buffer

Byte Meaning

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

0 LAS slave0LAS slave1LAS slave2LAS slave3LAS slave4LAS slave5LAS slave6LAS slave

1 LAS slave8LAS slave9LAS slave10LAS slave11LAS slave12LAS slave13LAS slave14LAS slave

2 LAS slave16LAS slave17LAS slave18LAS slave19LAS slave20LAS slave21LAS slave22LAS slave

3 LAS slave24LAS slave25LAS slave26LAS slave27LAS slave28LAS slave29LAS slave30LAS slave

4 LAS slave0BLAS slave1BLAS slave2BLAS slave3BLAS slave4BLAS slave5BLAS slave6BLAS slave

5 LAS slave8BLAS slave9BLAS slave

10B

6 LAS slave

16B

7 LAS slave

24B

8 LDS slave0LDS slave1LDS slave2LDS slave3LDS slave4LDS slave5LDS slave6LDS slave

9 LDS slave8LDS slave9LDS slave10LDS slave11LDS slave12LDS slave13LDS slave14LDS slave

10 LDS slave16LDS slave17LDS slave18LDS slave19LDS slave20LDS slave21LDS slave22LDS slave

LAS slave

17B

LAS slave

25B

LAS slave

18B

LAS slave

26B

LAS slave

11B

LAS slave

19B

LAS slave

27B

LAS slave

12B

LAS slave

20B

LAS slave

28B

LAS slave

13B

LAS slave

21B

LAS slave

29B

LAS slave

14B

LAS slave

22B

LAS slave

30B

LAS slave

15B

LAS slave

23B

LAS slave

31B

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Using the Command Interface

Byte Meaning

Bit 0Bit 1Bit 2Bit 3Bit 4Bit 5Bit 6Bit 7

11 LDS slave24LDS slave25LDS slave26LDS slave27LDS slave28LDS slave29LDS slave30LDS slave

12 LDS slave0BLDS slave1BLDS slave2BLDS slave3BLDS slave4BLDS slave5BLDS slave6BLDS slave

13 LDS slave8BLDS slave9BLDS slave

10B

14 LDS slave

16B

15 LDS slave

24B

16 LPS slave0LPS slave1LPS slave2LPS slave3LPS slave4LPS slave5LPS slave6LPS slave

17 LPS slave8LPS slave9LPS slave10LPS slave11LPS slave12LPS slave13LPS slave14LPS slave

18 LPS slave16LPS slave17LPS slave18LPS slave19LPS slave20LPS slave21LPS slave22LPS slave

19 LPS slave24LPS slave25LPS slave26LPS slave27LPS slave28LPS slave29LPS slave30LPS slave

20 LPS slave0BLPS slave1BLPS slave2BLPS slave3BLPS slave4BLPS slave5BLPS slave6BLPS slave

21 LPS slave8BLPS slave9BLPS slave

22 LPS slave

16B

23 LPS slave

24B 24 Flag 1 25 Flag 2 26 reserved 27 reserved 28 reserved 29 reserved 30 reserved 31 reserved

LDS slave

17B

LDS slave

25B

LPS slave

17B

LPS slave

25B

LDS slave

18B

LDS slave

26B

10B

LPS slave

18B

LPS slave

26B

LDS slave

11B

LDS slave

19B

LDS slave

27B

LPS slave

11B

LPS slave

19B

LPS slave

27B

LDS slave

12B

LDS slave

20B

LDS slave

28B

LPS slave

12B

LPS slave

20B

LPS slave

28B

LDS slave

13B

LDS slave

21B

LDS slave

29B

LPS slave

13B

LPS slave

21B

LPS slave

29B

LDS slave

14B

LDS slave

22B

LDS slave

30B

LPS slave

14B

LPS slave

22B

LPS slave

30B

LDS slave

15B

LDS slave

23B

LDS slave

31B

LPS slave

15B

LPS slave

23B

LPS slave

31B

Meaning of the Bits in Bytes 0 to 23

S Bit = 0 :

The AS-i slave is not activated, detected, or configured

S Bit = 1 :

The AS-i slave is activated, detected, or configured

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Using the Command Interface

Flag 1 Flag 2

Bit Number Meaning Bit Number Meaning

0 OFFLINE_READY 0 OFFLINE 1 APF 1 INTERNAL 2 NORMAL_MODE 2 EEPROM_OK 3 CONFIG_MODE 3 AUTO_ADDR_ENABLE 4 AUTO_ADDR_AVAIL 4 PERIPHERY_FAULT 5 AUTO_ADDR_ASSI_GN 5 reserved 6 LDS_0 6 reserved 7 CONFIG_OK 7 MPO startup

Meaning of the Flags

Flag Meaning

OFFLINE_READY The flag is set when the offline phase is active. APF This flag is set when the voltage on the AS-i cable is too low. NORMAL_MODE This flag is set when the DP/AS-i Link 20E is in the normal mode.

(The flag is set when the CP is in the normal mode.) CONFIG_MODE The flag is set in the configuration mode and reset in the protected mode. AUTO_ADDR_AVAIL This flag is set when the automatic address programming can be executed

(in other words, exactly one AS-i slave is currently out of operation). AUTO_ADDR_ASSIGN This flag is set when the automatic address programming is possible (in

other words, AUTO_ADDR_ENABLE = 1 and there is no “incorrect” slave

connected to the AS-i Interface). LDS_0 This flag is set when an AS-i slave exists with address 0. CONFIG_OK This flag is set when the desired (configured) and actual configuration

match. OFFLINE This flag is set when the mode is to changed to OFFLINE or this mode has

already been adopted. EEPROM_OK This flag is set when the test of the internal EEPROM did not detect any

errors. AUTO_ADDR_ENABLE This flag indicates whether the automatic address programming is enabled

(BIT = 1) or disabled (BIT = 0) by the user. INTERNAL This flag is always set. PERIPHERY_FAULT This flag is set when at least one AS-i slave is signaling a peripheral fault. MPO startup The “master_power_on_startup” flag is set after the power supply of the

AS-i slave master has been turned on. If the master is later

changed to OFFLINE, the bit is reset.

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3.3.17 Get_Extended_Total_Configuration

Purpose

This command reads the following data from the DP/AS-i Link 20E: S The list of active AS-i slaves (LAS) This indicates which of the connected AS-i

slaves are activated.

S The current configuration data of the connected AS-i slaves (I/O configuration

and ID code).

S The current parameters of the AS-i slaves (actual parameters) S The current flags.

This command can, for example, be used to find out the configuration of the stations connected to the AS-i cable after installation. The configuration data read in can, if necessary, be modified and saved on the DP/AS-i Link 20E as the expected configuration using the command ‘Configure Total System’ (see Section

3.3.18).

Structure of the Job Data in the Send Buffer

Byte Meaning

0 Command number: 39

Structure of the Response Data in the Receive Buffer

Byte Meaning

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

0 1 2 LAS slave0LAS slave1LAS slave2LAS slave3LAS slave4LAS slave5LAS slave6LAS slave

3 LAS slave8LAS slave9LAS slave10LAS slave11LAS slave12LAS slave13LAS slave14LAS slave

4 LAS slave16LAS slave17LAS slave18LAS slave19LAS slave20LAS slave21LAS slave22LAS slave

5 LAS slave24LAS slave25LAS slave26LAS slave27LAS slave28LAS slave29LAS slave30LAS slave

6 LAS slave0BLAS slave1BLAS slave2BLAS slave3BLAS slave4BLAS slave5BLAS slave6BLAS slave

7 LAS slave8BLAS slave9BLAS slave

10B

LAS slave

11B

00H 00H

LAS slave

12B

LAS slave

13B

LAS slave

14B

LAS slave

15B

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