Siemens SIMATIC Distributed I/O System DP/ASi Link Service Manual

Preface, ContentsOverview1ASi Basics2Configuration Options3Installing and Wiring DP/ASi Link4Configuring the DP/ASi Link5DP/ASi Link to S76Operating M

xDistributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bFigures1-1 Integrating the DP/ASi link 1-2. . . . . . . . . . . . . . . . . . . . . . . . . .

8-14Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b8.2.5 Module and First Station Diagnoses with the IM308CModule and first station diagnoses

8-15Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bThe first part of the station diagnostic data of the DP/ASi link as a DP slaveis structured

8-16Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b8.2.6 Module and First Station Diagnoses with the S7/M7 DP MasterModule and first station d

8-17Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bThe first part of the station diagnostic data of the DP/ASi link as a DP slaveis structured

8-18Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b8.2.7 Second Station Diagnosis with the IM308CThe second part of the station diagnostics is

8-19Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bTable 8-15 Structure of diagnostic data, bytes 20 and 21, continuedByte1RemedyReason/Reacti

8-20Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b8.2.8 Second Station Diagnosis with the S7/ M7 DP MasterThe second part of the station diag

8-21Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b8.2.9 Diagnostics for a Default Start-Up with the IM308C (6ES7 156 0AA00-0XA0 or Later, Iss

8-22Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bBytes 16 to 31 of the diagnostic message indicate the ASi configuration atthe time of the p

A-1Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bTechnical DataThe DP/ASi link meets the requirements of the Profibus-DP standard, the ASista

xiDistributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bTables1-1 Length of the PROFIBUS bus cable as a function of the baud rate on thePROFIBUS DP b

A-2Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bA.1 Standards and ApprovalsThis chapter contains for the distributed I/O system DP/ASi link

A-3Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bSIMATIC products are designed to operate in an industrial environment. With a one-shot appro

A-4Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bA.2 General Technical DataThe following table presents the technical data of the distributed

A-5Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bMechanical Environmental ConditionsOperating conditions to IEC 654-3 10 Hzvf < 57 Hz Con

A-6Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bFig. A-1 shows you the dimension drawing for the DP/ASi link.DP / ASi LINKCONFIG ERRORAUTOPR

B-1Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bI/O CodeIn this chapter you will find the I/O code of the ASi slaves as defined in theASi st

B-2Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bI/O Code

C-1Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bParameterization MessageYou require this chapter only if you are not using an application su

C-2Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bC.1 Structure of the Parameterization Message in Configuring with Ad-dress OptimizationThe p

C-3Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bTable C-1 Structure of the DP standard part in parameterization message, continuedByte(s) Me

xiiDistributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b8-17 Structure of bytes 17 to 19 in diagnostic message 8-20. . . . . . . . . . . . . . . .

C-4Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bBytes 7 to 14 are referred to as the initialization bytes.You can modify byte 7 (refer to Ta

C-5Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b”Actual is less than or equal to setpoint configuration” means that the DP/ASi link compares

C-6Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bC.2 Parameterization Data for ASi SlavesYou have to define four bytes for every ASi slave wh

C-7Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bIn Table C-7 you will find the assignment of the ASi addresses to the bytenumbers within the

C-8Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bC.3 Optimizing Address AssignmentFor you to be able to address the ASi slaves, you have to a

C-9Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bFig. C-1 illustrates the process for optimizing address assignment using theaddress space te

C-10Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bC.4 Structure of the Parameterization Message in Simple ConfigurationThe parameterization m

C-11Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bBytes 16 to 31 reflect the setpoint configuration of the DP/ASi link. An ASislave is perman

C-12Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bParameterization Message

D-1Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bConfiguration MessageYou require this section only if you are not using an application such

1-1Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bOverviewYou use the DP/ASi link to interface the Actuator Sensor Interface to thePROFIBUS-DP

D-2Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bD.1 Structure of the Configuration Message with a Default Start-UpThe configuration message

D-3Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bD.2 Structure of the Configuration Message in Configuration with Ad-dress OptimizationThe co

D-4Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bWith the identification byte, you define the structure of the configurationmessage. You will

D-5Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bThe following example presents the structure of the five bytes of data (bytes15 to 19) for a

D-6Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bThe following example shows the structure of the five bytes of data (bytes 15to 19) for a DP

D-7Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bD.3 Structure of the Configuration Message in Simple ConfigurationThe configuration message

D-8Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bYou have an DP/ASi link on which the ASi slave with the highest address towhich outputs are

Glossary-1Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bGlossaryAActive nodes may send data to other nodes, if they are token holding nodes,a

Glossary-2Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bTo assign parameters is to pass slave parameters from the master to the slave.BRate a

Glossary-3Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bDistributed I/O devices are I/O units that are not used in the base unit but areset u

1-2Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b1.1 Using the DP/ASi LinkThe DP/ASi link connects the Actuator Sensor Interface (referred to

Glossary-4Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bThe ID code is an additional identification, its use being optional for eachASi slave

Glossary-5Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bDraft PROFIBUS-DP standard (EN 50170 Volume 2, PROFIBUS), on whichthe Distributed I/O

Glossary-6Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bSYNC is a ³ control command of the DP master to a group of DP slaves.With the SYNC co

Index-1Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bIndexAActive nodes, Glossary-1Actual configuration, Glossary-1Actual is equal to setpoin

Index-2Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bConfiguration, 3-1data, Glossary-1options, 3-1summary, 3-2with programmer connector, 3-9

Index-3Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bEEMC Directive, A-2Error handling, 8-1Exampleaddress assignment, C-7, C-9configuration m

Index-4Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bParameterization message, C-1control byte, C-4DP standard section, C-2station status, C-

Index-5Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bUUL, A-3UL approval, A-3UNFREEZE, Glossary-6Ungrounded installation, 4-6Rules, 4-6UNSYNC

Index-6Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bIndex

1Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bSiemens AGAUT E 148Postfach 1963D–92209 AmbergFederal Republic of GermanyFrom:Your Name: ____

1-3Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b1.2 What is the DP/ASi Link?The DP/ASi link connects the actuator sensor interface (ASi) to

2Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bAdditional comments:__________________________________________________________________________

Distributed I/O System DP/ASI LinkEWA 4NEB 710 6055-02b1163 mm6.42 inch 52 mm2.05 inchDrilling jigDrill holes: thread M4 163 mm6.42 inch52 mm2.05 inc

Distributed I/O System DP/ASI LinkEWA 4NEB 710 6055-02b3163 mm6.42 inch52 mm2.05 inchDrilling jigDrill holes: thread M4 163 mm6.42 inch52 mm2.05 inch

1-4Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b Connections– PROFIBUS-DP– ASi cable– 24 V DC power supply Optical isolation between PROF

1-5Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b1.3 View of the DP/ASi LinkFig. 1-3 contains an illustration of the DP/ASi link.You will fin

1-6Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bOverview

2-1Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bASi BasicsIf you wish to acquire a general idea of ASi, this is the right chapter for you.If

iiDistributed I/O System DP/ASi LinkEWA 4NEB 710 6055 02bThis manual contains notices which you should observe to ensure your own personal safety, asw

2-2Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b2.1 Structure of ASiYou can install the ASi as branched with a single 2-wire cable. You conn

2-3Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b2.2 Elements of ASiThe DP/ASi link is the ASi master. It controls communication in the ASi.T

2-4Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bYou use the ASi distribution unit when you branch the ASi cable without using an ASi slave

2-5Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b2.3 Example Configuration of a ModuleEvery module consists of an upper part and a lower part

2-6Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b2.4 Connecting ElementsYou connect the elements of the ASi by attaching the modules to the A

2-7Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b2.5 Interruption or Short-Circuit of the ASi cableIf the ASi cable is short-circuited due to

2-8Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bASi Basics

3-1Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bConfiguration OptionsAt this point we will show you how you integrate the DP/ASi link into t

3-2Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b3.1 Summary of Configuration OptionsPROFIBUS-DP presents you with different configuration op

3-3Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b3.2 Configuration without T Connector and with Power Supply Connec-torIn a configuration wit

iiiDistributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bPrefaceThe information contained in this manual will enable you to: install an Actuator Sen

3-4Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b3.3 Configuration with T Connector and with Power Supply ConnectorIn a configuration with a

3-5Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bWith the DP/ASi link, spur lines are not authorized except for the program-mer or the ET 200

3-6Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b3.4 Configuration with Several Power Supply ConnectorsIn configurations with a power supply

3-7Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b3.5 Configuration without Power Supply ConnectorIn a configuration with a separate power sup

3-8Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bWith the DP/ASi link, spur lines are not authorized except for the program-mer or the ET 200

3-9Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b3.6 Configuration with Programmer ConnectorIf you wish to operate the programmer on the PROF

3-10Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bBoth the 2-core cable and the 5-core cable can be connected to the program-mer connector.A

4-1Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bInstalling and Wiring the DP/ASi LinkIn this chapter you will learn how the DP/ASi link is i

4-2Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b4.1 InstallationThe IP 66/IP 67 degree of protection can be guaranteed for the DP/ASi linkon

4-3Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b4.2 Electrical Wiring of DP/ASi LinkYou can wire the 24 V supply to the DP/ASi link either a

ivDistributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bCompared to the previous edition of this manual, Distributed I/O System DP/ASi Link having th

4-4Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b4.2.1 Grounded InstallationWith grounded installation of the DP/ASi link, you have to connec

4-5Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bGrounded installation of the DP/ASi link is shown in the diagram below.L1 L2L3NPI(1) (2) (3)

4-6Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b4.2.2 Ungrounded InstallationWith ungrounded installation of the 24V supply to the DP/ASi li

4-7Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bUngrounded installation of the DP/ASi link is shown in the diagram below.L1L2L3 N PI (1) (2)

4-8Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b4.2.3 Connecting the DP/ASi Link to ASi and PROFIBUS-DPThe location of the three sockets of

4-9Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bYou can connect either the PROFIBUS-DP or the power supply to the deviceconnector. The two 1

4-10Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b4.3 CommissioningIn this section you will learn what you have to take into consideration to

4-11Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b4.3.1 Selecting the Station Number for PROFIBUS-DPWith the station number, you identify eve

4-12Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b4.3.2 Setting a Station Number on the DIP Switch BlockIf you wish to use the station number

4-13Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b4.3.3 Station Number in EEPROMThe DP/ASi link is supplied to you with the default station n

vDistributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bShould you have any technical queries, please contact your Siemens repre-sentative at the agen

4-14Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bIn certain cases the station number in the EEPROM of the DP/ASi link has tobe reset. Procee

4-15Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b4.4 Additional Components for PROFIBUS-DPYou require additional components to operate the D

4-16Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b4.4.1 T Connector (6ES5 762-2CT11)You require a T connector for the following configuration

4-17Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b4.4.2 Power Supply Connector (6ES5 762-2CS11)The power supply connector is used to link the

4-18Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b4.4.3 Programmer Connector (6ES5 762-2CA12)A programmer connector is used to connect the pr

4-19Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b4.4.4 CablesThe PROFIBUS-DP features different installation options, for which youneed the

4-20Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bThe following table shows the Order Numbers for the standard lengths:Table 4-6 Order Number

4-21Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b4.4.5 Terminating Resistor (6ES5 755-2CA11)A bus cable must always be terminated at both en

4-22Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b4.4.6 Adapter Cable (6ES5 755-8CA11)The adapter cable is required to connect the programmer

4-23Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b4.4.7 Wiring of PROFIBUS-DPThis section describes the points you have to take into account

viDistributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bPreface

4-24Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bInstalling and Wiring the DP/ASi Link

5-1Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bConfiguring the DP/ASi LinkTo operate the DP/ASi link to the PROFIBUS-DP, you must configure

5-2Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bIn Section You Will Find on Page5.1 Configuring - for Example with COM ET 200 Windows(Versio

5-3Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b5.1 Configuring – for Example with COM ET 200 Windows (Version 2.0or Later)In the following

5-4Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bBy choosing Parameterize..., you can influence the start-up characteristicsof the DP/ASi lin

5-5Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b5.2 Example Using COM ET 200 Windows (Version 2.0 or Later)You wish to connect an ASi with a

5-6Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b5.3 Operating the DP/ASi Link with an External MasterIf you do not use an application having

5-7Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b5.3.1 Configuring with Address Space OptimizationYou can operate the DP/ASi link with any DP

5-8Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b5.3.2 Simple ConfigurationThe DP/ASi link, version 3 or later, can also be operated on DP st

5-9Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b5.3.3 Default Start-UpYou can also configure and assign parameters to the DP/ASi link from t

viiDistributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bContentsPreface1 Overview1.1 Using the DP/ASi Link 1-2. . . . . . . . . . . . . . . . . . .

5-10Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bThe table below describes the location of ASi data in the input and outputarea. A specific

5-11Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bFollowing power up, the DP/ASi link determines the configuration of the ASinterface and exp

5-12Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bConfiguring the DP/ASi Link

6-1Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bDP/ASi Link to S7If you operate the DP/ASi link to an S7 (6ES7 156-0AA01-0XA0 or later,versi

6-2Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bTable 6-1 Parameters for SFC 59 “RD_REC”, continuedParameter DescriptionMemory AreaData Type

6-3Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b6.1 Reading Data Records with SFC 59 ”RD_REC”You use data record 140 to read lists and flags

6-4Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bData record 141 reads outs the parameter echoes of the different ASi slaves.You can evaluate

6-5Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bData record 2 reads the response of the last “WR_REC” write job.You have to call a “RD_REC”

6-6Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b6.2 Writing Data Records with SFC 58 “WR_REC”Data record 142 writes parameters to ASi slaves

6-7Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b6.3 Example of Re-assigning Parameters to an ASi Slave with S7Below you will find an example

viiiDistributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b4.4 Additional Components for PROFIBUS-DP 4-15. . . . . . . . . . . . . . . . . . . . . . .

6-8Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bThe destination area of data record 140 is located in data block DB 59, forexample. The foll

7-1Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bOperating ModesThe DP/ASi link goes through various operating modes during operation,ranging

7-2Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b7.1 Automatic Start-up of DP/ASi LinkThere are not any switches on the DP/ASi link. The DP/A

7-3Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bStep Flowchart Meaning9AThe DP/ASi link, as the ASi master, periodi-cally polls the I/O code

7-4Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b7.2 Normal OperationIn normal operation, the DP master exchanges data with the DP/ASi link i

7-5Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bIf the connection to an ASi slave or an ASi slave fails during routine opera-tion, undefined

7-6Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b7.3 Automatic Programming”Automatic programming” is an operating mode that occurs only when

8-1Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bDiagnostics and Error HandlingYou use the chapter entitled ”Diagnostics and Error Handling”

8-2Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b8.1 Diagnostics by Means of LEDs of DP/ASi LinkFor on-site diagnostics, the operating modes

8-3Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bSo that the DP/ASi link display is not cluttered, failed ASi slaves (ASi-SLAVE FAIL) are dis

ixDistributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bA Technical DataA.1 Standards and Approvals A-2. . . . . . . . . . . . . . . . . . . . . . .

8-4Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bTable 8-3 shows the meanings of the LEDs for ASi diagnostics and describesthe action require

8-5Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bIn addition to the different displays described in Table 8-2 and Table 8-3,combinations of s

8-6Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b8.2 Diagnostics by Means of User ProgramIn Section You Will Find on Page8.2.1 Diagnostic Fun

8-7Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b8.2.1 Diagnostic Fundamentals in Operations with an IM308CYou can read the DP/ASi link diagn

8-8Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b At this point you will find a brief example of how to read the slave diagnosisinto your PL

8-9Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b8.2.2 Diagnostic Fundamentals in Operations with an S7/M7 DP Master(STEP 7) or with Another

8-10Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b8.2.3 Structure of DiagnosisThe structure of the diagnostic message conforms with the PROFI

8-11Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bThe diagnostic message for the S7/M7 DP master contains 24 bytes of data.The structure of t

8-12Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02b8.2.4 Contents of DP Standard PartThe first six bytes of the diagnostic message (byte 0 to

8-13Distributed I/O System DP/ASi LinkEWA 4NEB 710 6055-02bStation status 3 is reserved for later applications. Its value is always 00H.This byte cont