WAGO WAGO-I/O-SYSTEM 750, 750-655 Series Manual

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Fieldbus Independent I/O Modules

AS-Interface master module 750-655

Manual

Version 1.2.3

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ii • General

WAGO Kontakttechnik GmbH & Co. KG

Hansastraße 27 D-32423 Minden

Phone: +49 (0) 571/8 87 – 0 Fax: +49 (0) 571/8 87 – 1 69

E-Mail: info@wago.com

Web: http://www.wago.com

Technical Support

Phone: +49 (0) 571/8 87 – 5 55 Fax: +49 (0) 571/8 87 – 85 55

E-Mail: support@wago.com

Every conceivable measure has been taken to ensure the correctness and completeness of this documentation. However, as errors can never be fully excluded, we would appreciate any information or ideas at any time.

E-Mail: documentation@wago.com

We wish to point out that the software and hardware terms as well as the trademarks of companies used and/or mentioned in the present manual are generally trademark or patent protected.

WAGO-I/O-SYSTEM 750 I/O Modules

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Table of Contents • iii

Table of Contents

1 Important Comments ................................................................................. 6

1.1 Legal Principles........................................................................................6

1.1.1 Copyright ............................................................................................. 6

1.1.2 Personnel Qualification ....................................................................... 6

1.1.3 Intended Use ........................................................................................ 6

1.2 Symbols .................................................................................................... 7

1.3 Number Notation......................................................................................7

1.4 Safety Notes ............................................................................................. 8

1.5 Scope ........................................................................................................8

2 I/O Modules .................................................................................................9

2.1 Special Modules ....................................................................................... 9

2.1.1 750-655 [AS-Interface master module]...............................................9

2.1.1.1 View................................................................................................9

2.1.1.2 Description......................................................................................9

2.1.1.3 Indicating devices .........................................................................13

2.1.1.4 Schematic circuit diagram............................................................. 14

2.1.1.5 Technical data ............................................................................... 15

2.1.1.6 Functional description................................................................... 16

2.1.1.6.1 Start-up behavior......................................................................16

2.1.1.6.1.1 Offline phase ....................................................................... 16

2.1.1.6.1.2 Detection phase ................................................................... 16

2.1.1.6.1.3 Activation phase .................................................................. 17

2.1.1.6.1.4 Normal mode ....................................................................... 17

2.1.1.6.2 Slave lists ................................................................................. 17

2.1.1.6.3 Operating modes ...................................................................... 17

2.1.1.6.3.1 Set-up mode.........................................................................17

2.1.1.6.3.2 Protected operating mode.................................................... 18

2.1.1.6.4 Addressing in set-up mode.......................................................19

2.1.1.6.5 Addressing in the case of configuration errors ........................19

2.1.1.6.5.1 Automatic addressing .......................................................... 19

2.1.1.6.5.2 Manual addressing............................................................... 20

2.1.1.7 Process image................................................................................ 21

2.1.1.7.1 Overview .................................................................................. 21

2.1.1.7.2 Control and status byte.............................................................25

2.1.1.7.2.1 Assignment for process data communication...................... 25

2.1.1.7.2.2 Assignment for register communication .............................26

2.1.1.7.3 AS-Interface process data ........................................................27

2.1.1.7.3.1 AS-Interface flags................................................................ 28

2.1.1.7.4 Mailbox ....................................................................................28

2.1.1.7.4.1 Structure .............................................................................. 29

2.1.1.7.4.2 Access procedure.................................................................30

2.1.1.8 Mailbox commands....................................................................... 31

2.1.1.8.1 Overview of mailbox commands .............................................31

2.1.1.8.2 Result values of mailbox commands........................................ 33

2.1.1.8.3 Example of mailbox use...........................................................33

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iv • Important Comments Legal Principles

2.1.1.9 Data channel for parameter exchange...........................................36

2.1.1.9.1 Introduction .............................................................................. 36

2.1.1.9.2 Register structure ..................................................................... 36

2.1.1.9.2.1 Parameter data (Register 56) ............................................... 36

2.1.1.9.2.2 Communications control (Register 57) ...............................37

2.1.1.9.3 Parameter sets........................................................................... 38

2.1.1.9.3.1 General parameter data (system parameter range) .............. 38

2.1.1.9.3.2 Bus module-specific parameter data ...................................39

2.1.1.9.4 Parameter transmission process ...............................................39

2.1.1.9.4.1 Determining the maximum bus module parameter data

(system parameters).............................................................39

2.1.1.9.4.2 Setting the monitoring time (system parameters)................ 40

2.1.1.9.4.3 Restoring factory settings (system parameters)................... 40

2.1.1.9.4.4 Reading/writing parameters (module-specific) ................... 41

2.1.1.9.4.5 Example: Configuring AS-Interface process data and

mailbox ................................................................................ 42

2.1.1.10 Extended diagnostics of the AS-Interface master.........................43

2.1.1.10.1 List of AS-Interface slaves, which have initiated configuration

errors (LCS).............................................................................. 43

2.1.1.10.2 Protocol analysis: Counter for transmission errors for data

telegrams ..................................................................................43

2.1.1.10.3 Offline phase in the case of configuration errors.....................43

2.1.2 Node Design ......................................................................................45

2.1.2.1 Grouping of AS-Interface Master Modules ..................................45

3 Working with the AS-Interface master module 750-655....................... 46

3.1 Set up and configuration with WAGO-I/O-CHECK 2........................... 46

3.1.1 Setting up the AS-Interface process data and mailbox length........... 46

3.1.2 Setting up the operating mode for the AS-Interface master .............. 47

3.1.3 Including a new slave in the AS-Interface network ..........................47

3.1.4 Selecting an AS-Interface slave from the slave overview................. 48

3.1.5 Configuring an AS-Interface slave .................................................... 48

3.1.6 Observing and setting up AS-Interface process data......................... 49

3.1.7 AS-Interface diagnostics.................................................................... 49

4 Fieldbus-specific behavior........................................................................ 50

4.1 CANopen................................................................................................ 50

4.1.1 Accessing the process image ............................................................. 50

4.1.1.1 Example ........................................................................................ 53

4.2 DeviceNet............................................................................................... 55

4.2.1 Accessing the process image ............................................................. 55

4.2.1.1 Example ........................................................................................ 55

4.3 ETHERNET ........................................................................................... 57

4.3.1 Modbus protocol................................................................................ 57

4.3.1.1 Accessing the process image ........................................................ 57

4.3.1.1.1 Example.................................................................................... 57

4.3.2 ETHERNET IP protocol.................................................................... 59

4.3.2.1 Accessing the process image ........................................................ 59

4.3.2.1.1 Example.................................................................................... 59

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Table of Contents • v

4.4 PROFIBUS DP....................................................................................... 61

4.4.1 Accessing the process image ............................................................. 61

4.4.1.1 Example ........................................................................................ 61

4.5 LON........................................................................................................ 64

5 Appendix .................................................................................................... 65

5.1 Overview of mailbox commands............................................................ 65

5.2 Overview of mailbox commands sorted by function ............................. 67

5.3 Overview of mailbox commands sorted by opcode ...............................69

5.4 Overview of mailbox commands sorted by value ..................................71

5.5 Mailbox command - Reference.............................................................. 73

5.5.1 Mailbox commands ........................................................................... 73

5.5.2 Functional profiles........................................................................... 126

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6 • Important Comments Legal Principles

1 Important Comments

To ensure fast installation and start-up of the units described in this manual, we strongly recommend that the following information and explanations are carefully read and abided by.

1.1 Legal Principles

1.1.1 Copyright

This manual is copyrighted, together with all figures and illustrations contained therein. Any use of this manual which infringes the copyright provisions stipulated herein, is not permitted. Reproduction, translation and electronic and photo-technical archiving and amendments require the written consent of WAGO Kontakttechnik GmbH & Co. KG. Non-observance will entail the right of claims for damages.

WAGO Kontakttechnik GmbH & Co. KG reserves the right to perform modifications allowed by technical progress. In case of grant of a patent or legal protection of utility patents all rights are reserved by WAGO Kontakttechnik GmbH & Co. KG. Products of other manufacturers are always named without referring to patent rights. The existence of such rights can therefore not be ruled out.

1.1.2 Personnel Qualification

The use of the product detailed in this manual is exclusively geared to specialists having qualifications in PLC programming, electrical specialists or persons instructed by electrical specialists who are also familiar with the valid standards. WAGO Kontakttechnik GmbH & Co. KG declines all liability resulting from improper action and damage to WAGO products and third party products due to non-observance of the information contained in this manual.

1.1.3 Intended Use

For each individual application, the components supplied are to work with a dedicated hardware and software configuration. Modifications are only permitted within the framework of the possibilities documented in the manuals. All other changes to the hardware and/or software and the nonconforming use of the components entail the exclusion of liability on part of WAGO Kontakttechnik GmbH & Co. KG.

Please direct any requirements pertaining to a modified and/or new hardware or software configuration directly to WAGO Kontakttechnik GmbH & Co. KG.

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Important Comments • 7 Symbols

1.2 Symbols

Danger Always abide by this information to protect persons from injury.

Warning Always abide by this information to prevent damage to the device.

Attention Marginal conditions must always be observed to ensure smooth operation.

ESD (Electrostatic Discharge) Warning of damage to the components by electrostatic discharge. Observe the precautionary measure for handling components at risk.

Note Routines or advice for efficient use of the device and software optimization.

More information References on additional literature, manuals, data sheets and INTERNET pages

1.3 Number Notation

Number Code Example Note

Decimal 100 normal notation

Hexadecimal 0x64 C notation

Binary '100'

'0110.0100'

Within ', Nibble separated with dots

WAGO-I/O-SYSTEM 750 I/O Modules

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8 • Important Comments Safety Notes

1.4 Safety Notes

Warning Switch off the system prior to working on bus modules!

In the event of deformed contacts, the module in question is to be replaced, as its functionality can no longer be ensured on a long-term basis.

The components are not resistant against materials having seeping and insulating properties. Belonging to this group of materials is: e.g. aerosols, silicones, triglycerides (found in some hand creams).

If it cannot be ruled out that these materials appear in the component environment, then additional measures are to be taken:

- installation of the components into an appropriate enclosure

- handling of the components only with clean tools and materials.

Attention Cleaning of soiled contacts may only be done with ethyl alcohol and leather cloths. Thereby, the ESD information is to be regarded.

1.5 Scope

Do not use any contact spray. The spray may impair the functioning of the contact area.

The WAGO-I/O-SYSTEM 750 and its components are an open system. It must only be assembled in housings, cabinets or in electrical operation rooms. Access must only be given via a key or tool to authorized qualified personnel.

The relevant valid and applicable standards and guidelines concerning the installation of switch boxes are to be observed.

ESD (Electrostatic Discharge) The modules are equipped with electronic components that may be destroyed by electrostatic discharge. When handling the modules, ensure that the environment (persons, workplace and packing) is well grounded. Avoid touching conductive components, e.g. gold contacts.

This manual describes the Special Module 750-655 AS-Interface master module of the modular WAGO-I/O-SYSTEM 750.

Handling, assembly and start-up are described in the manual of the Fieldbus Coupler. Therefore this documentation is valid only in the connection with the appropriate manual.

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750-655 [AS-Interface master module] • 9 View

2 I/O Modules

2.1 Special Modules

2.1.1 750-655 [AS-Interface master module]

2.1.1.1 View

Fig. 2.1.1-1: View g065500e

2.1.1.2 Description

The AS-Interface master module 750-655 is used to integrate the AS-Interface network into the WAGO-I/O-SYSTEM 750. By this means, AS-Interface slaves or subsystems, together with modules from the WAGO-I/O-SYSTEM 750, can be used in widely differing field bus systems.

The AS-Interface master module 750-655 behaves as a master for the ASInterface and as a slave for the field bus.

It already complies with the new AS-Interface specification 2.1. This means that:

• up to 62 AS-Interface slaves can be connected to the master,

• the transmission of analog values is integrated within the masters and

• all other functions of the new specification, such as the evaluation of

peripheral errors, are also implemented.

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10 • 750-655 [AS-Interface master module]

Description

Fig. 2.1.1-2: Overview of the AS-Interface network p065501e

The AS-Interface functions are made available acyclically and the ASInterface process data are made available both cyclically and acyclically over the field bus.

In cyclical data exchange, up to 32 bytes of I/O data (resettable) are transmitted for the binary data of the AS-Interface strand.

In addition, analog values, and also all other commands of the new ASInterface specification, can be transmitted acyclically in a management channel over the field bus.

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750-655 [AS-Interface master module] • 11 Description

Diagnostics functions, which go well beyond the AS-Interface specification, enable intermittent configuration errors and sources of interference on the ASInterface communication to be easily localized. In this way, the downtimes of systems can be minimized in the case of a fault and preventative maintenance measures can be implemented.

LEDs signal the readiness for operation and the fault-free module bus communication as well as the status of the signal transmission.

The AS-Interface master module 750-655 can be used with the following WAGO-I/O-SYSTEM 750 couplers/controllers:

Bus system Coupler / Controller Item No.

Profibus

DeviceNet

CANopen

ETHERNET

Fieldbus coupler

ECO fieldbus coupler 750-343 03 from 06

Programmable fieldbus controller 750-833 12 from 07

Fieldbus coupler 750-306 11 4I

ECO fieldbus coupler 750-346 02 07

Programmable fieldbus controller 750-806 02 07

Programmable fieldbus controller

750-301 01 07

750-303 01 07

750-333 12 from 07

750-337 09 10 Fieldbus coupler

750-338 01 14

750-347 01 04 ECO fieldbus coupler

750-348 01 04

750-837 06 11

750-838 01 11

750-341 03 03 Fieldbus coupler

Hardware version

Software version

IPC WAGO-IPC 750-870 02 IPC-

Further couplers/controllers on request.

WAGO-I/O-SYSTEM 750 I/O Modules

750-342 04 14

Programmable fieldbus controller

Fieldbus coupler 750-319 07 05 LON

Programmable fieldbus controller 750-819 08 07

750-841 03 07

750-842 04 12

Firmware

02.04. 18/0200 KbusFirmware

01.02. 03(06)

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12 • 750-655 [AS-Interface master module]

Description

The version number is included in the fabrication number, which is printed on the right-hand side of the bus module.

Note

A maximum of three AS-Interface master modules can be incorporated into one fieldbus node. If it is intended to install two or three master modules in direct vicinity to each other in one node, it is essential to observe the node design acc. to chapter 2.1.2.1 „Grouping of AS-Interface Master Modules“.

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750-655 [AS-Interface master module] • 13 Indicating devices

2.1.1.3 Indicating devices

LED Designation State Function

24 V - power AS-interfacepower

Mapping consistency

K-Bus timeout

overflow

Fig. 2.1.1-3: Indicating devices

13 14

AS-interface active

prg enable

cfg mode

cfg error

g065502e

Power

green

AS-Interface power

green

red

Mapping consistency

Internal bus timeout

red overflow

green

AS-Interface active

green prg enable

off 24 V supply fault or

AS-Interface supply fault

on 24 V supply OK and

AS-Interface supply OK

off AS-Interface incomplete on internal bus

(mapping)

on AS-Interface complete on internal bus

off Communication to coupler/controller

on Communication to coupler/controller

interrupted

off AS-Interface complete on internal bus

on AS-Interface incomplete on internal bus

(timing)

off AS-Interface not active

on AS-Interface active

off No automatic programming possible /

necessary

on A slave is missing and can be replaced

by automatic programming

yellow cfg mode

off Protected operating mode

on Set-up mode

off No fault

red general fault

flashing Peripheral fault

on Configuration error (Config Error Bit)

or at least one of the status bits 1 or 2

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14 • 750-655 [AS-Interface master module]

Schematic circuit diagram

2.1.1.4 Schematic circuit diagram

Fig. 2.1.1-4: Schematic circuit diagram g065501e

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750-655 [AS-Interface master module] • 15 Technical data

2.1.1.5 Technical data

Module-specific data

AS-Interface specification 2.1

Number of slaves up to 62

Current consumption (ASInterface)

Supply voltage (AS-Interface) 26.5 V ... 31.6 V

AS-Interface cable length max. 100 m, with repeater 300 m

Cycle time AS-Interface 0.3 ms ... 10 ms, depending on number of slaves

Configuration

Transmission channel 1

Current consumption max. (internal) 55 mA

Supply voltage DC 24 V via power contacts

Potential isolation 500 V system / supply / AS-Interface connection point

Data width 12 ... 48 bytes max. freely configurable,

Dimensions (mm) W x H x L 12 x 64* x 100

Weight ca. 70 g

Norms and Directives (cf. Chapter 2.2 in manual for coupler/controller)

EMC Immunity to interference CE according to EN 61000-6-2 (1996), EN 50295 (1999)

40 mA

via process image, WAGO-I/O-CHECK 2 or AS-Interface mode contacts

including 1 byte control / status

* from upper edge of mounting rail DIN 35

EMC Emissions of interference CE

Approvals (cf. Chapter 2.2 in manual for coupler/controller)

(UL508)

CULUS

Conformity Marking

according to EN 61000-6-4 (2001)

More Information Detailed references to the approvals are listed in the document "Overview Approvals WAGO-I/O-SYSTEM 750", which you can find on the CD ROM ELECTRONICC Tools and Docs (Item-No.: 0888-0412) or in the internet under:

www.wago.com ! Documentation ! WAGO-I/O-SYSTEM 750 !

System Description

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16 • 750-655 [AS-Interface master module]

Functional description

2.1.1.6 Functional description

2.1.1.6.1 Start-up behavior

After switching on, all LEDs illuminate as part of a self test. Following this, the LEDs indicate the status of the respective flags. On start-up, the ASInterface master module runs through the following phases:

Offline phase

Detection phase

Activation phase

Data exchange phase

Management phase

Acquisition phase

Initialisation

Start-up mode

Normal mode

Fig. 2.1.1-5: Start-up behavior g065503e

2.1.1.6.1.1 Offline phase

The master module is initialized; there is no exchange of data with the slaves.

Note

The master module will remain in the offline phase if the AS-Interface circuit is not adequately supplied with power (U AS-I does not come on).

The offline phase can be exited in start-up mode or when the WAGO-I/O- CHECK 2 commissioning tool starts automatically.

2.1.1.6.1.2 Detection phase

Beginning of start-up operation, in which a search is carried out for slaves present on the AS-Interface. The master module remains in the detection phase until at least one slave has been detected.

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750-655 [AS-Interface master module] • 17 Functional description

2.1.1.6.1.3 Activation phase

State at the end of the start-up mode, in which the parameters of all the connected and detected slaves are transmitted. At this point, access is enabled to the data connections in the slaves. Depending on the operating mode, either all detected and set-up slaves are activated (protected mode of operation) or all detected slaves are activated (set-up mode).

2.1.1.6.1.4 Normal mode

In the normal mode, the master module exchanges data with all active slaves (data exchange phase), transmits management telegrams (telegrams from and to the host, management phase) and searches for and activates newly connected slaves (acquisition phase).

2.1.1.6.2 Slave lists

Information on available or set-up slaves is stored in the master in the form of lists.

Set-up mode

LDS LAS

detected active projected active

Fig. 2.1.1-6: Slave lists g065504e

The list of detected slaves (LDS) includes all slaves, which the master detects in the AS-Interface circuit and which have a valid address.

The list of projected slaves (LPS) includes all slaves, which the master expects in the AS-Interface circuit as a result of the set-up.

The list of active slaves (LAS) includes all slaves with which the master exchanges data. In the set-up mode, this list corresponds to the LDS list and, in protected mode, it corresponds to the LPS list.

2.1.1.6.3 Operating modes

2.1.1.6.3.1 Set-up mode

Protected mode

LPS

LAS

The set-up mode is used for configuring the AS-Interface circuit.

Note

In the set-up mode, all detected slaves are activated even when there are

WAGO-I/O-SYSTEM 750 I/O Modules

differences between the required and actual configuration.

Page 18

18 • 750-655 [AS-Interface master module]

Functional description

The master module is switched to set-up mode by short-circuiting the mode contacts M1 and M2 for at least five seconds. The yellow "prj mode" LED illuminates in set-up mode. In set-up mode, all detected slaves, with the exception of slave zero, are activated. The master module is in normal mode. Data is exchanged between the master module and all detected slaves regardless of whether the detected slaves have already been set up.

Note

The AS-Interface master module is supplied from the factory in set-up mode.

2.1.1.6.3.2 Protected operating mode

The master module is switched from set-up mode to protected mode by shortcircuiting the mode contacts M1 and M2.

Brief short-circuit:

The master module switches from set-up mode to protected mode without setting up the current actual configuration as a required configuration.

Short-circuiting for longer than five seconds:

The master module switches from set-up mode to protected mode. At the same time, the actual configuration is stored in the module as a required configuration.

Note

If a slave with the address zero is detected on the AS-Interface, it will not be possible to exit the set-up mode.

Note

In protected mode, only those slaves are activated, which have been set up and the required configuration of which matches the actual values.

Note

In contrast to the set-up mode, in protected mode, data is only exchanged between the master module and the slaves that have been set-up.

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750-655 [AS-Interface master module] • 19 Functional description

2.1.1.6.4 Addressing in set-up mode

AS-Interface systems on the master module can be commissioned with the WAGO-I/O-CHECK 2 commissioning tool. The procedure is described in Chapter Fehler! Verweisquelle konnte nicht

gefunden werden. "Fehler! Verweisquelle konnte nicht gefunden werden.".

Commissioning can also be carried out using an addressing unit.

2.1.1.6.5 Addressing in the case of configuration errors

2.1.1.6.5.1 Automatic addressing

One of the great advantages of the AS-Interface is the automatic address programming. If a slave fails due to a defect, it can be replaced by a physically identical slave with the address zero. The master module detects this and automatically addresses the new slave with the address of the defective slave.

The following requirements must be satisfied for automatic programming:

• The master module must be in protected mode.

• The enable flag "Auto_prog" must be set.

• Only one of the set-up slaves must be undetected.

• The new slave must have the same configuration data as the missing slave.

When these conditions are satisfied, the master module indicates this with the "prg enable" LED. If a slave is then detected with the address zero, it will automatically be reprogrammed with the address of the missing slave. The "Auto_prog" flag for automatic programming can be switched on and off with the WAGO-I/O-CHECK 2 commissioning tool.

Note

Only slaves with the address zero can be re-addressed by the master module.

Note

Automatic address programming is not carried out if the two slaves have different configuration data, i.e. are not physically identical from the ASInterface side.

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20 • 750-655 [AS-Interface master module]

Functional description

2.1.1.6.5.2 Manual addressing

If several slaves have failed, the addresses of the new slaves must be set manually. This can be carried out with the WAGO-I/O-CHECK 2 commissioning tool or an addressing unit.

Note

If several slaves fail, they can no longer be automatically replaced by the master.

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750-655 [AS-Interface master module] • 21 Process image

2.1.1.7 Process image

2.1.1.7.1 Overview

The length of the process image of the AS-Interface master module can be set to fixed sizes of 12, 20, 24, 32, 40 or 48 bytes. It consists of a control or status byte, a mailbox with a size of 0, 6, 10, 12 or 18 bytes and the AS-Interface process data, which can range from 0 to 32 bytes (Mode 1). Alternatively, the mailbox can be set up to overlap, i.e. the mailbox is temporarily superimposed on the AS-Interface process data with a length of 6, 10, 12 or 18 bytes depending on the total length of the process image that has been configured (Mode 2). Register communication is used to set up the module via the parameter channel (Mode 3).

Mode 1 Mode 2.1 Mode 2.2 Mode 3

permanently

configured mailbox

(normal mode)

Control/Status

(1 byte, byte 0)

Internal use

(1 byte, byte 1)

Mailbox

(acyclical data,

0-18 bytes long,

bytes 2 to n)

Process data

(cyclical data,

0-32 bytes long,

bytes n+1 to m)

overlapping mailbox

activated

Control/Status

(1 byte, byte 0)

Internal use

(1 byte, byte 1)

Mailbox

(acyclical data,

6-18 bytes long,

bytes 2 to n)

Process data

(cyclical data, 0-32 bytes long, bytes n+1 to m)

(take validity of data

into account!)

overlapping mailbox

deactivated

Control/Status

(1 byte, byte 0)

Internal use

(1 byte, byte 1)

Process data

(cyclical data,

0-32 bytes long,

bytes 2 to m)

communication

Control/Status

(1 byte, byte 0)

Internal use

(1 byte, byte 1)

(2 bytes, bytes 2 to

Invalid data

(bytes 4 to m)

Changing between Mode 1 (permanently configured mailbox) and Mode 2 (overlapping mailbox) as well as the setting up of the mailbox and process image sizes is carried out with the WAGO-I/O-CHECK 2 commissioning tool or by means of the parameter channel via address 0. The values set are mirrored in Register 33. Mode 3 (register communication) is switched on and off with bit 27 of the control byte. As this mode has a superimposed function, the previously activated Mode 1 or 2 remains active after switching off.

All possible settings relating to the total process image length and mailbox length are listed in the following tables.

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22 • 750-655 [AS-Interface master module]

Process image

In Mode 1, the control/status byte, the mailbox and the cyclical process data are mapped. This is the default setting. When the difference between the process image length and the mailbox length is less than 34 bytes, only the first part of the AS-Interface process data is transmitted; the data for the slaves with the higher addresses are then omitted.

Mode 1 Mailbox length (permanently configured)

Process image length

in control byte = TRUE)

12 byte

20 byte

24 byte

32 byte

40 byte

48 byte

PI offset in bytes

0 Control or status byte 1 Internal use 2 Flags 1/1A Register data (bit 27

3 2/2A 3/3A

4 4/4A 5/5A 5 6/6A 7/7A 6 8/8A 9/9A 7 10/10A 11/11A 8 12/12A 13/13A Flags 1/1A 9 14/14A 15/15A 2/2A 3/3A 10 16/16A 17/17A 4/4A 5/5A 11 18/18A 19/19A 6/6A 7/7A 12 20/20A 21/21A 8/8A 9/9A Flags 1/1A 13 22/22A 23/23A 10/10A 11/11A 2/2A 3/3A 14 24/24A 25/25A 12/12A 13/13A 4/4A 5/5A Flags 1/1A 15 26/26A 27/27A 14/14A 15/15A 6/6A 7/7A 2/2A 3/3A 16 28/28A 29/29A 16/16A 17/17A 8/8A 9/9A 4/4A 5/5A 17 30/30A 31/31A 18/18A 19/19A 10/10A 11/11A 6/6A 7/7A 18 Flags 1B 20/20A 21/21A 12/12A 13/13A 8/8A 9/9A 19 2B 3B 22/22A 23/23A 14/14A 15/15A 10/10A 11/11A 20 4B 5B 24/24A 25/25A 16/16A 17/17A 12/12A 13/13A Flags 1/1A 21 6B 7B 26/26A 27/27A 18/18A 19/19A 14/14A 15/15A 2/2A 3/3A 22 8B 9B 28/28A 29/29A 20/20A 21/21A 16/16A 17/17A 4/4A 5/5A 23 10B 11B 30/30A 31/31A 22/22A 23/23A 18/18A 19/19A 6/6A 7/7A 24 12B 13B Flags 1B 24/24A 25/25A 20/20A 21/21A 8/8A 9/9A 25 14B 15B 2B 3B 26/26A 27/27A 22/22A 23/23A 10/10A 11/11A 26 16B 17B 4B 5B 28/28A 29/29A 24/24A 25/25A 12/12A 13/13A 27 18B 19B 6B 7B 30/30A 31/31A 26/26A 27/27A 14/14A 15/15A 28 20B 21B 8B 9B Flags 1B 28/28A 29/29A 16/16A 17/17A 29 22B 23B 10B 11B 2B 3B 30/30A 31/31A 18/18A 19/19A 30 24B 25B 12B 13B 4B 5B Flags 1B 20/20A 21/21A 31 26B 27B 14B 15B 6B 7B 2B 3B 22/22A 23/23A 32 28B 29B 16B 17B 8B 9B 4B 5B 24/24A 25/25A 33 30B 31B 18B 19B 10B 11B 6B 7B 26/26A 27/27A 34 - - 20B 21B 12B 13B 8B 9B 28/28A 29/29A 35 - - 22B 23B 14B 15B 10B 11B 30/30A 31/31A 36 - - 24B 25B 16B 17B 12B 13B Flags 1B 37 - - 26B 27B 18B 19B 14B 15B 2B 3B 38 - - 28B 29B 20B 21B 16B 17B 4B 5B 39 - - 30B 31B 22B 23B 18B 19B 6B 7B 40 - - - - 24B 25B 20B 21B 8B 9B 41 - - - - 26B 27B 22B 23B 10B 11B 42 - - - - 28B 29B 24B 25B 12B 13B 43 - - - - 30B 31B 26B 27B 14B 15B 44 - - - - - - 28B 29B 16B 17B 45 - - - - - - 30B 31B 18B 19B 46 - - - - - - - - 20B 21B 47 - - - - - - - - 22B 23B

0 byte 6 byte 10 byte 12 byte 18 byte

Mailbox

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750-655 [AS-Interface master module] • 23 Process image

Mode 2 describes the operating mode with suppressible mailbox. If the mailbox flag (bit 25 in the control byte) is set, then the mailbox is imposed over the cyclical data range. The covered range is then no longer valid (the range not covered continues to be updated, however, and can therefore be used). If the mailbox flag is not set, then the mailbox is suppressed and the cyclical data range becomes valid. The required setting is acknowledged by mirroring in bit 25 of the status byte.

Note

The application program must take into account the validity of the data ranges.

Mailbox

Mode 2

Process image length

in control byte = TRUE)

12 byte

20 byte

24 byte

32 byte

40 byte

suppressed (bit 25 in control byte = FALSE)

PI offset in bytes

0 Control or status byte 1 Internal use 2 Flags 1/1A Register data (bit 27

3 2/2A 3/3A

4 4/4A 5/5A 5 6/6A 7/7A 6 8/8A 9/9A 7 10/10A 11/11A 8 12/12A 13/13A 12/12A 13/13A 9 14/14A 15/15A 14/14A 15/15A 10 16/16A 17/17A 16/16A 17/17A 11 18/18A 19/19A 18/18A 19/19A 12 20/20A 21/21A 20/20A 21/21A 20/20A 21/21A 13 22/22A 23/23A 22/22A 23/23A 22/22A 23/23A 14 24/24A 25/25A 24/24A 25/25A 24/24A 25/25A 24/24A 25/25A 15 26/26A 27/27A 26/26A 27/27A 26/26A 27/27A 26/26A 27/27A 16 28/28A 29/29A 28/28A 29/29A 28/28A 29/29A 28/28A 29/29A 17 30/30A 31/31A 30/30A 31/31A 30/30A 31/31A 30/30A 31/31A 18 Flags 1B Flags 1B Flags 1B Flags 1B 19 2B 3B 2B 3B 2B 3B 2B 3B 20 4B 5B 4B 5B 4B 5B 4B 5B 4B 5B 21 6B 7B 6B 7B 6B 7B 6B 7B 6B 7B 22 8B 9B 8B 9B 8B 9B 8B 9B 8B 9B 23 10B 11B 10B 11B 10B 11B 10B 11B 10B 11B 24 12B 13B 12B 13B 12B 13B 12B 13B 12B 13B 25 14B 15B 14B 15B 14B 15B 14B 15B 14B 15B 26 16B 17B 16B 17B 16B 17B 16B 17B 16B 17B 27 18B 19B 18B 19B 18B 19B 18B 19B 18B 19B 28 20B 21B 20B 21B 20B 21B 20B 21B 20B 21B 29 22B 23B 22B 23B 22B 23B 22B 23B 22B 23B 30 24B 25B 24B 25B 24B 25B 24B 25B 24B 25B 31 26B 27B 26B 27B 26B 27B 26B 27B 26B 27B 32 28B 29B 28B 29B 28B 29B 28B 29B 28B 29B 33 30B 31B 30B 31B 30B 31B 30B 31B 30B 31B ... 39

n byte mailbox 6 byte mailbox 10 byte mailbox 12 byte mailbox 18 byte mailbox

Empty

Mailbox imposed (bit 25 in control byte = TRUE)

Mailbox

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24 • 750-655 [AS-Interface master module]

Process image

Mode 3 is reserved for register communication. Bit 27 in the control byte is set to activate register communication. Resetting this bit switches register communication off again. The selected setting is mirrored in bit 27 of the status byte. The register data are superimposed on the PI offset byte 2 and byte 3 over the respective cyclical or acyclical memory range depending on the selected mode.

Note In Mode 3, the mailbox and the process data are basically no longer valid.

Process image length and mailbox length:

The process image length and the mailbox length can be freely set within fixed limits with the limitation that the process image length is greater than the mailbox length plus two control/status bytes.

The size of the process image can be set to 12 bytes, 20 bytes, 24 bytes, 32 bytes, 40 bytes or 48 bytes.

The mailbox length can be set to 0 bytes, 6 bytes, 10 bytes, 12 bytes or 18 bytes.

Note If a mailbox length of 0 bytes is set, it will only be possible to access the process data of digital slaves.

AS-Interface process data:

The length of the AS-Interface data and thus the number of transferable slaves is given by the combination of the above-mentioned process image and mailbox settings.

AS-Interface process data length = (Process image length – Mailbox length – 2)

The following table shows a summary of the permissible configurations of process image and mailbox:

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750-655 [AS-Interface master module] • 25 Process image

Mailbox length

PI C/S

12 2 10 19 4 7 0 0 - - - -

20 2 18 34 12 23 8 15 6 11 0 0

24 2

32 2 30 58 24 46 20 38 18 34 12 23

40 2 38 62 32 62 28 54 26 50 18 38

48 2 46 62 40 62 36 62 34 62 28 54

PI Length of process image that can be set

C/S Number of status and control bytes (incl. filler bytes)

PD Length of AS-Interface process data

SL Number of transferable slaves

0 byte 6 byte 10 byte 12 byte 18 byte

PD SL PD SL PD SL PD SL PD SL

22 42

16 31

12 23 10 19 4 7

The standard setting is a process image length of 24 bytes and a mailbox length of 6 bytes. This results in an AS-Interface process data length of 16 bytes, i.e. 31 slaves can be read out.

2.1.1.7.2 Control and status byte

The bus master switches between process data communication and register communication with bit 27 in the control byte. The changeover is acknowledged by the bus module with bit 27 in the status byte.

2.1.1.7.2.1 Assignment for process data communication

With process data communication, the control and status bytes are assigned as follows:

Control byte

Byte 27 26 25 24 23 22 21 20

1 0 0 mbx 0 0 0 0 0

0 Mailbox suppressed mbx

1 Mailbox superimposed

The superimposition of the mailbox is activated and deactivated with bit 25 in the control byte. With process data communication, bit 27 in the control byte is always reset.

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26 • 750-655 [AS-Interface master module]

Process image

Status byte

Byte 27 26 25 24 23 22 21 20

1 0 gen.

fault

0 AS-Interface complete on internal bus Overflow

1 AS-Interface incomplete on internal bus (timing)

0 AS-Interface active AS-I

1 AS-Interface not active

0 AS-Interface supply OK and 24 V supply OK AS-Interface

power

consistency

(config error)

1 AS-Interface supply fault or 24 V supply fault

0 AS-Interface complete on internal bus Mapping

1 AS-Interface incomplete on internal bus (mapping)

0 Protected operating mode cnf mode

1 Set-up mode

0 Mailbox suppressed mbx

1 Mailbox superimposed

0 No fault General fault

1 Configuration error or at least one of the status bits 1 or 2

mbx cnf

mode

Map-

ping consist-

ency

AS-

inter-

face -

power

AS-I Over-

flow

The status of the AS-Interface master module is indicated by the bits 20 to 24 and 26 in the status byte. The superimposition of the mailbox is acknowledged by the bus module with

in the status byte.

bit 2 Process data communication is acknowledged by the bus module with bit 2 the status byte.

2.1.1.7.2.2 Assignment for register communication

With register communication, the control and status bytes are assigned as follows:

Control byte

Byte 27 26 25 24 23 22 21 20

1 1 R/W Register number

0 Read access R/W

1 Write access

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750-655 [AS-Interface master module] • 27 Process image

Bit 26 (R/W) in the control byte determines the register read or write access. With register communication, bit 27 in the control byte is always set.

Status byte

Byte 27 26 25 24 23 22 21 20

1 1 — Register number

2.1.1.7.3 AS-Interface process data

In the data field of the AS-Interface process data, the data for (or from) 2 slaves are transmitted with each byte. In doing so, the data for the slave with the higher address are located in the lower value nibble. The main EC (Execution Control) flags or control bits are transmitted in place of slave 0, with which the master does not exchange any process data.

AS-Interface process data

Byte

offset

1 Slave 2/2A Slave 3/3A

… … …

14 Slave 28/28A Slave 29/29A

15 Slave 30/30A Slave 31/31A

16 Reserved Slave 1B

17 Slave 2B Slave 3B

… … …

30 Slave 28B Slave 29B

31 Slave 30B Slave 31B

27 26 25 24 23 22 21 20

Flags Slave 1/1A

F3 F2 F1 F0 D3 D2 D1 D0

Depending on the process image length, mailbox length and mailbox mode, it may be that not all AS-Interface process data are transmitted (cf. Chapter

2.1.1.7.1 "Overview process image").

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28 • 750-655 [AS-Interface master module]

Process image

2.1.1.7.3.1 AS-Interface flags

Flags

Input data Output data

F0 ConfigError Offline

F1 APF LOS master bit

F2 PeripheryFault A rising edge switches the

master to the set-up mode

F3 ConfigurationActive A rising edge switches the

master to the protected mode

0 Config OK ConfigError:

1 Config error

0 AS-Interface power OK APF:

1 AS-Interface power failed

0 Periphery OK PeripheryFault:

All bits in the LOS are set with a rising edge of the LOS master bit. All bits in the LOS are reset with a falling edge of the LOS master bit.

2.1.1.7.4 Mailbox

As well as the 32 bytes of input and output data, an AS-Interface master manages a large amount of configuration and parameter data. These data are only required for setting up the AS-Interface circuit and for diagnostics and therefore only have to be read or written occasionally.

In addition, the master supports slaves according to profile S-7.3 and S-7.4 and other multiplexing slaves, whereby large amounts of data can also occur.

1 Periphery fault

0 Configuration inactive, master in protected mode ConfigurationActive:

1 Configuration active, master in set-up mode

0 Online Offline:

1 Offline

0 Offline with ConfigError deactivated LOS master bit:

1 Offline with ConfigError activated

Access is made to these non-time-critical data via the mailbox.

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750-655 [AS-Interface master module] • 29 Process image

2.1.1.7.4.1 Structure

Mailbox request

Byte 27 26 25 24 23 22 21 20

1 Opcode

2 T O A/B -

3 Request parameter byte 1

… …

36 Request parameter byte 34

Opcode Command code for the mailbox order

T Toggle flag A mailbox order is started when a change occurs.

O Order flag

(for mailbox orders with bit information)

A/B

(for 6-byte mailbox orders with bit information)

Channel changeover (for 6-byte mailbox orders with word information)

0 Bits are stored in parameter bytes in ascending order

(default value).

1 Bits are stored in parameter bytes in descending order.

0 A-slave data are transmitted before B-slave data. Slave changeover

1 B-slave data are transmitted before A-slave data.

0 Analog values are transmitted in the order Channel 1,

Channel 2, Channel 3, Channel 4.

1 Analog values are transmitted in the order Channel 3,

Channel 4, Channel 1, Channel 2.

Mailbox response

Byte 27 26 25 24 23 22 21 20

1 Opcode (mirrored)

2 T Result

3 Response parameter byte 1

… …

34 Response parameter byte 32

Opcode Mirrored command code for the mailbox order

T Toggle flag A mailbox order is acknowledged when a change occurs.

Result Status / error in the mailbox order

In most cases, the mailbox will not have the full length in order to provide space for the AS-Interface process data.

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30 • 750-655 [AS-Interface master module]

Process image

2.1.1.7.4.2 Access procedure

The user first writes the request parameter and then the opcode and toggle flag. As soon as the opcode or toggle flag changes, the master interprets the mailbox range of the module bus output data as a complete mailbox command and executes it. In doing so, the response parameters are stored in the mailbox range of the internal bus input data.

When the command has been processed, the master mirrors the opcode and the toggle flag. From this, the user recognizes that his request has been dealt with and the result is available in the internal bus input data.

The toggle flag is required so that two mailbox commands with the same opcode (but possibly different parameters) can be executed directly after one another.

The execution of a mailbox command is declined if the number of request parameter bytes transmitted (in the output data direction) is too small, i.e. if the mailbox length has been set too low.

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750-655 [AS-Interface master module] • 31 Mailbox commands

2.1.1.8 Mailbox commands

2.1.1.8.1 Overview of mailbox commands

Opcode

IDLE 0x00 No order 2 2 ● ● ● ● 73

Configuration

GET_LDS_A/B 0x46 Get_List_of_Detected_Slaves 2 10 A/B ● ● ● 89

READ_CDI 0x28 Read_Actual_Configuration 3 4 ● ● ● ● 82

STORE_CDI 0x07 Store_Actual_Configuration 2 2 ● ● ● ● 81

SET_PCD 0x25 Set_Permanent_Configuration 5 2 ● ● ● ● 79

GET_PCD 0x26 Get_Permanent_Configuration 3 4 ● ● ● ● 80

GET_LPS_A/B 0x44 Get_List_of_Projected_Slaves 2 10 A/B ● ● ● 85

SET_LPS_A/B 0x6B Set_List_of_Projected_Slaves 10 2 A/B ● ● ● 83

GET_LAS_A/B 0x45 Get_List_of_Activated_Slaves 2 10 A/B ● ● ● 87

Parameters

GET_PP 0x01 Get_Permanent_Parameter 3 3 ● ● ● ● 75

SET_PP 0x43 Set_Permanent_Parameter 4 2 ● ● ● ● 74

READ_PI 0x03 Read_Parameter_from_Image 3 3 ● ● ● ● 77

Valu e

Meaning

Req Len

Executable with

Res

mailbox

Len

Page

6 10 12 18

WRITE_P 0x02 Write_Parameter 4 3 ● ● ● ● 76

STORE_PI 0x04 Store_Actual_Parameter_Image 2 2 ● ● ● ● 78

GET_DELTA_A/B*) 0x57 Get list of config. diff. 2 10 A/B ● ● ● 110

SLAVE_ADDR 0x0D Change_Slave_Address 4 2 ● ● ● ● 96

Diagnosis

GET_FLAGS 0x47 Get_Flags 2 5 ● ● ● ● 91

GET_LPF_A/B 0x3E Get_List_of_Peripheral_Failure 2 10 A/B ● ● ● 99

GET_LCS_A/B*) 0x6C Get_List_of_Corrupted_Slaves 2 10 A/B ● ● ● 116

GET_TEC_X*) 0x66 Get transm.err.counters X-Slaves 4

Operation Modes

SET_OP_MODE 0x0C Set_Operation_Mode 3 2 ● ● ● ● 93

SET_OFFLINE 0x0A Set_Off-Line_Mode 3 2 ● ● ● ● 94

SET_DATA_EX 0x48 Set_Data_Exchange_Active 3 2 ● ● ● ● 95

SET_AAE 0x0B Set_Auto_Adress_Enable 3 2 ● ● ● ● 97

GET_LOS_A/B*) 0x61 GET_LOS 2 10 A/B ● ● ● 118

SET_LOS_A/B*) 0x6D SET_LOS 10 2 A/B ● ● ● 120

≥5

● ● ● ● 122

Special Functions

WRITE_XID1 0x3F Write_Extended_ID-Code_1 3 2 ● ● ● ● 101

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32 • 750-655 [AS-Interface master module]

Mailbox commands

Opcode

EXEC_CMD 0x49 Execute_Command 4 3 ● ● ● ● 98

FP_PARAM*) 0x7D „Functional Profile“ Param.

FP_DATA*) 0x7E „Functional Profile“ Data

Digital Slaves

RD_SLV_DATA*) 0x5E Read_Slave_Data 3 6 ● ● ● ● 102

WR_SLV_DATA*) 0x5F Write_Slave_Data 4 2 ● ● ● ● 103

16 Bit Slaves

RD_7X_IN_A/B 0x50 Read 1 7.3-slave in.data 3 10 A/B ● ● ● 104

WR_16BIT_OUT_S 0x6F WR_16BIT_OUT_S 6 2 ● ● ● ● 107

WR_7X_OUT 0x51 Write 1 7.3-slave out.data 11 2 - - ● ● 106

RD_7X_OUT_A/B 0x52 Read 1 7.3-slave out.data 3 10 A/B ● ● ● 108

Extended 16 Bit Slaves

WR_74_PARAM 0x5A Write S-7.4-slave parameter

RD_74_PARAM 0x5B Read S-7.4-slave parameter 4

Valu e

Meaning

Req Len

≥3 ≥2

≥6

Executable with

Res

mailbox

Len

6 10 12 18

● ● ● ● 124

● ● ● ● 125

2 ● ● ● ● 112

● ● ● ● 113

≥3

Page

RD_74_ID 0x5C Read S-7.4-slave ID string 4

RD_74_DIAG 0x5D Read S-7.4-slave diagnosis string 4

Housekeeping

BUTTONS*) 0x75 Disable Pushbuttons 3 2 ● ● ● ● 123

*) Command in addition to AS-Interface specification

● Command is executable

- Command is not executable

A/B Command is executable with changeover between A/B slaves or channels

● ● ● ● 114

≥3

● ● ● ● 115

≥3

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750-655 [AS-Interface master module] • 33 Mailbox commands

2.1.1.8.2 Result values of mailbox commands

Result Value Location Meaning

OK 0x00 – Fault-free execution

HI_NG 0x11 HI General fault (host interface "not good")

HI_OPCODE 0x12 HI Invalid value in opcode

HI_LENGTH 0x13 HI Length of mailbox in I/O data range or length of the

DP V1 request is too small

HI_ACCESS 0x14 HI No access right

EC_NG 0x21 EC General fault (AS-I execution control "not good")

EC_SND 0x22 EC "Slave (source addr) not detected"

EC_SD0 0x23 EC "Slave 0 detected"

EC_SD2 0x24 EC "Slave (target addr) not detected"

EC_DE 0x25 EC "Delete error"

EC_SE 0x26 EC "Set error"

EC_AT 0x27 EC "Address temporary"

EC_ET 0x28 EC "Extended ID1 temporary"

EC_RE 0x29 EC "Read (extended ID1) error"

HI Host Interface of the module

EC Execution Control (part specific to AS-Interface)

2.1.1.8.3 Example of mailbox use

The command for reading-in the four 16-bit channels of an AS-Interface input slave, which is set up according to slave profile 7.3, is shown by way of an example (RD_7X_IN).

When processing process image:

Mailbox size: 6 bytes

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34 • 750-655 [AS-Interface master module]

Mailbox commands

Selection of channels 1 and 2 (A/B flag = 0):

Request: RD_7X_IN

Byte 1 0x50 (RD_7X_IN)

Byte 2 0x00 (Toggle flag = 0, A/B flag = 0)

Byte 3 0x1D (Slave address 29)

Byte 4 0x00

… …

Byte 6 0x00

Response

Byte 1 0x00

… …

Byte 6 0x00

The mailbox call is not answered with the current analog values, as the toggle flag has not been set.

Setting the toggle flag:

Request

Byte 1 0x50

Byte 2 0x80 (Toggle flag = 1, A/B flag = 0)

Byte 3 0x1D (Slave address 29)

Byte 4 0x00

… …

Byte 6 0x00

Response

Byte 1 0x50

Byte 2 0x80 (Toggle flag = 1, no error)

Byte 3 Analog channel 1 high byte, hex

Byte 4 Analog channel 1 low byte, hex

Byte 5 Analog channel 2 high byte, hex

Byte 6 Analog channel 2 low byte, hex

The values for channels 1 and 2 appear in the response.

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750-655 [AS-Interface master module] • 35 Mailbox commands

Selection of channels 3 and 4 (A/B flag = 1):

Request

Byte 1 0x50

Byte 2 0xA0 (Toggle flag = 1, A/B flag = 1)

Byte 3 0x1D (Slave address 29)

Byte 4 0x00

… …

Byte 6 0x00

Response

Byte 1 0x00

… …

Byte 6 0x00

The mailbox call is not answered with the current analog values, as the toggle flag has not been reset.

Resetting the toggle flag:

Request

Byte 1 0x50

Byte 2 0x20 (Toggle flag = 0, A/B flag = 1)

Byte 3 0x1D (Slave address 29)

Byte 4 0x00

… …

Byte 6 0x00

Response

Byte 1 0x50

Byte 2 0x00 (Toggle flag = 0, no error)

Byte 3 Analog channel 3 high byte, hex

Byte 4 Analog channel 3 low byte, hex

Byte 5 Analog channel 4 high byte, hex

Byte 6 Analog channel 4 low byte, hex

The values for channels 3 and 4 appear in the response.

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36 • 750-655 [AS-Interface master module]

Data channel for parameter exchange

2.1.1.9 Data channel for parameter exchange

2.1.1.9.1 Introduction

A general data channel between application and bus module is used for the acyclical exchange of parameter sets and for their checking by the complex bus module. In order to obtain access via all available interfaces of a bus coupler or bus controller, the parameter channel is mapped onto the existing register model. The parameter channel can therefore currently be controlled via the following interfaces:

• via the control/status byte in the process data exchange

• via the 2-byte process data interface (PLC interface)

• via the exchange of parameters in the case of the respective field bus

systems (e.g. PROFIBUS-DP/DP-V1)

• via the asynchronous serial interface of the bus coupler/bus controller (e.g. for 750-101, WAGO-I/O-CHECK 2, WAGO-I/O-PRO 32 and BKService)

The mapping of the parameter channel takes place via registers 56 and 57 of the appropriate table or the appropriate channel of the complex bus module. The parameter data are stored word by word in register 56 and the communication is controlled via register 57. The structure of registers 56 and 57 is described in the following chapters.

2.1.1.9.2 Register structure

2.1.1.9.2.1 Parameter data (Register 56)

Register 56 is used for holding the parameter data that are to be read or written. Depending on access, the register is written by the bus module (read parameters) or by the bus coupler (write parameters).

Bit 27 26 25 24 23 22 21 20

Parameter

Bit 215 214 213 212 211 210 29 28

Parameter

PRM0 ... PRM15

PRM7 PRM6 PRM5 PRM4 PRM3 PRM2 PRM1 PRM0

PRM15 PRM14 PRM13 PRM12 PRM11 PRM10 PRM9 PRM8

Parameter data bit 20 to bit 215

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750-655 [AS-Interface master module] • 37 Data channel for parameter exchange

2.1.1.9.2.2 Communications control (Register 57)

Bit 27 26 25 24 23 22 21 20

Request parameter

Response parameter

Bit 215 214 213 212 211 210 29 28

Request parameter

Response parameter

Request parameter

Response parameter

A7 A6 A5 A4 A3 A2 A1 A0

TGL_ MS

TGL_ SM

Information is written by the application and read by the module

Information is written by the module and read by the application

PRM_ RW

TIME OUT

MORE_ PRM

BUF_ OVF

RES RES RES RES RES

PRM_ ERR

RES RES RES RES

Parameter Value range Meaning

A0 … A7 0 ... 255 Word address of the parameter to be currently

written/read.

TGL_MS FALSE,

TRUE

Toggle bit for transmitting new orders from the application to the module. If TGL_SM and TGL_MS have the same status, a new order has not yet been initiated. If the flags have different statuses, a new order has been initiated and is currently being processed.

TGL_SM FALSE,

TIMEOUT

WAGO-I/O-SYSTEM 750 I/O Modules

FALSE Parameter data are being read from A7 ... A0 PRM_RW

TRUE Parameter data are being written to A7 ... A0

FALSE Parameter transmission is complete. MORE_PRM

TRUE Further parameter data are to follow

Toggle bit for signaling the acceptance of a transmitted

TRUE

FALSE The transmission of the parameters has been completed in

TRUE The maximum transmission time for the parameters

parameter on the part of the module. If the status of TGL_SM is not the same as that of TGL_MS, then the respective order is being processed by the module. If both flags have the same status, then the order for the previously sent or requested parameter has been completed.

the agreed time (parameter address 0).

previously negotiated between the module and the application has been exceeded.

Page 38

38 • 750-655 [AS-Interface master module]

Data channel for parameter exchange

Parameter Value range Meaning

BUF_OVF

PRM_ERR

RES FALSE Reserved for expansion

FALSE Access was allowed to the write or read buffer

respectively of the module.

TRUE Access was made to parameters outside the write or read

buffer.

FALSE The previously transmitted parameter or all transmitted

parameters was/were valid.

TRUE At least one parameter was faulty on transmission. The

flag can be set either after each parameter received or on completion of the parameter transmission.

2.1.1.9.3 Parameter sets

Parameter sets, which are indexed via parameter addresses (A7 ... A0), are defined for using the parameter channel. Differentiation is made between general (system parameter) and module-specific parameter addresses.

2.1.1.9.3.1 General parameter data (system parameter range)

The following addresses are defined for access to bus module system parameters:

Address Mode

250 ... 253

254 R/W TIMEOUT This parameter contains the maximum

255

R/W RESERVED Reserved for expansion

R NO_OF_PRMS Number of bus module parameters in

W SET_DEFAULT_PRMS The bus module is reset to the factory

Parameter Description

permissible time in milliseconds that may elapse when transferring the parameter set. When TIMEOUT = 0, the monitoring time is infinite.

words

settings.

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750-655 [AS-Interface master module] • 39 Data channel for parameter exchange

2.1.1.9.3.2 Bus module-specific parameter data

The following addresses are defined for access to the specific parameter data of the AS-Interface master module:

Address Mode Parameter Description

0 R/W

1 R/W

2 … 249

see Chapter 2.1.1.7.1 "Overview process image"

R/W RESERVED Reserved for expansion

LB 20...27 ASI_DATA_

LEN

28...214MBX_LEN Length of the mailbox to be set in bytes

MBX_

MODE

20 DS_EN Internal use LB

...27 RES Reserved for expansion

HB 2

...215RES Reserved for expansion

AS-Interface data length in bytes

FALSE No superimposition of mailbox

and AS-Interface process data

TRUE Mailbox can be superimposed

on the AS-Interface process data (by setting bit 2 control byte)

in the

The contents of address 0 are also entered by the module in register 33 with the read-only attribute.

2.1.1.9.4 Parameter transmission process

Parameter data are exchanged between application and bus modules by means of the Request-Response process. The application initiates an order with the help of the toggle bit (TGL_MS != TGL_SM). The communications control register (R57) then polls the module until the latter acknowledges the execution of the order (TGL_SM == TGL_MS).

The possible orders to the parameterizing interface of the bus module are listed in the following.

2.1.1.9.4.1 Determining the maximum bus module parameter data (system parameters)

Request (Application)

Parameter Value Meaning

TGL_MS != TGL_SM Initiate order

PRM_RW = FALSE Read access

A0 ... A7 255 Address of parameter data length

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40 • 750-655 [AS-Interface master module]

Data channel for parameter exchange

Response (Bus module)

Parameter Value Meaning

TGL_SM == TGL_MS Order executed

A0 ... A7 255 Address of parameter data length mirrored

PRM0 ... PRM15

N Number of parameters in the address range 0 ... (n-1),

n ∈ {N < 250}

2.1.1.9.4.2 Setting the monitoring time (system parameters)

Request (Application)

Parameter Value Meaning

TGL_MS != TGL_SM Enter order

PRM_RW = TRUE Write access

A0 ... A7 254 Address TIMEOUT

PRM0 ... PRM15

0 ... 65535 Monitoring time in milliseconds. The entry 0 means no

monitoring of the parameterization.

Response (Bus module)

Parameter Value Meaning

TGL_SM == TGL_MS Order executed

A0 ... A7 254 Address TIMEOUT mirrored

The module monitors the time for the transfer of the parameter data. The monitoring of the time is started on the first occasion that the parameter range specific to the module is accessed. It finishes with the receipt of the last parameter word, which is identified by MORE_PRM = FALSE.

2.1.1.9.4.3 Restoring factory settings (system parameters)

Request (Application)

Parameter Value Meaning

TGL_MS != TGL_SM Enter order

PRM_RW = TRUE Write access

A0 ... A7 255 Address of factory settings

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Page 41

750-655 [AS-Interface master module] • 41 Data channel for parameter exchange

Response (Bus module)

Parameter Value Meaning

TGL_SM == TGL_MS Order executed

A0 ... A7 255 Address of factory settings mirrored

2.1.1.9.4.4 Reading/writing parameters (module-specific)

Request (Application)

Parameter Value Meaning

TGL_MS != TGL_SM Initiate order

= FALSE Read access PRM_RW

= TRUE Write access

MORE_PRM

A0 ... A7 0 ... (n-1) Address of parameter data

PRM0 ... PRM15

= FALSE The transmission of the parameter data is terminated with

the currently transmitted parameter.

= TRUE Further parameter data are to follow.

0 ... 65535 Parameter data for write access

Response (Bus module)

Parameter Value Meaning

TGL_SM == TGL_MS Order executed

A0 ... A7 0 ... (n-1) Address of parameter data mirrored

TIMEOUT FALSE, TRUE Monitoring time expired

BUF_OFL FALSE, TRUE Access outside the module parameter range

PRM_ERR FALSE, TRUE Parameter/parameter set error

PRM0 ... PRM15

0 ... 65535 Parameter data for read access

Errors when exchanging parameter data are reported by the module in the error flags TIMEOUT, BUF_OV and PRM_ERR.

When the last parameter has been transferred to the module (MORE_PRM = FALSE), the entire parameter set is checked by the module and accepted if correct. Otherwise, the module returns a parameterizing error (PRM_ERR = TRUE).

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42 • 750-655 [AS-Interface master module]

Data channel for parameter exchange

2.1.1.9.4.5 Example: Configuring AS-Interface process data and mailbox

Request (Application)

Parameter Value Meaning

TGL_MS != TGL_SM Initiate order

PRM_RW = TRUE Write access

MORE_PRM = FALSE The transmission of the parameter data is terminated with

the currently transmitted parameter.

A0 ... A7 0 Address of parameter data

PRM0 ... PRM7

PRM8 ... PRM14

PRM15 MBX_MODE

ASI_DATA_ LEN

MBX_LEN Mailbox length in bytes

AS-Interface data length in bytes

FALSE No superimposition of mailbox and AS-

Interface process data

TRUE Mailbox can be superimposed on the AS-

Interface process data (by setting bit 2 control byte)

Response (Bus module)

Parameter Value Meaning

TGL_SM == TGL_MS Order executed

A0 ... A7 0 Address of parameter data mirrored

TIMEOUT FALSE, TRUE Monitoring time expired

BUF_OFL FALSE, TRUE Access outside the module parameter range

PRM_ERR FALSE, TRUE Parameter/parameter set error

in the

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Page 43

750-655 [AS-Interface master module] • 43 Extended diagnostics of the AS-Interface master

2.1.1.10 Extended diagnostics of the AS-Interface master

The extended diagnostics can be used to localize intermittent configuration errors as well as assessing the quality of the data transmission on the ASInterface bus.

2.1.1.10.1 List of AS-Interface slaves, which have initiated configuration errors

(LCS)

In order to diagnose the causes, which are responsible for short-term configuration errors on the AS-Interface network, along with the list of projected slaves (LPS), the list of detected slaves (LDS) and the list of active slaves (LAS), AS-Interface masters with extended diagnostics functionality also manage an additional list of slaves, which have initiated a configuration error (LCS, List of Corrupted Slaves). In this list appear all slaves, which have caused at least one short-term configuration error since the last time the list was read or since the master was switched on. Furthermore, short-term voltage dips on the AS-Interface network are also displayed in the LCS in place of slave 0.

Note The LCS is deleted again each time a read process is carried out.

2.1.1.10.2 Protocol analysis: Counter for transmission errors for data telegrams

Masters with extended diagnostics provide a counter for each slave for telegram repeats, which is incremented for every transmission error in the case of data telegrams. By this means, the quality of the transmission can be assessed even when only individual telegrams are faulty and the slave would therefore never initiate a configuration error.

Note The status of the counters is read out via the appropriate host interface and reset with each read access. The highest valid instantaneous status of the counter is 254. A count of 255 indicates a counter overflow.

2.1.1.10.3 Offline phase in the case of configuration errors

Masters with extended diagnostics provide the option of placing themselves in the offline state in the case of a configuration error, hence placing the ASInterface network in a safe operating state. It is thus possible to respond more quickly to configuration errors and the host is relieved of this task. If problems occur on the AS-Interface, the masters can automatically switch the ASInterface network into a safe state.

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Page 44

44 • 750-655 [AS-Interface master module]

Extended diagnostics of the AS-Interface master

There are two ways of parameterizing the master for this function:

• Every configuration error that occurs on the AS-Interface switches the master from normal operation in protected mode into the offline phase.

• A list of slave addresses is defined, which can cause the offline phase to be initiated when configuration errors occur (List of Offline Slaves LOS). Here, the user himself can decide how the master is to respond to a configuration error on the AS-Interface. Hence, with critical slaves, the master can be switched directly into the offline phase while, with less critical slaves, the error message "configuration error" is sent to the host, but the AS-Interface network is not switched offline.

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Page 45

Node Design • 45 Grouping of AS-Interface Master Modules

2.1.2 Node Design

2.1.2.1 Grouping of AS-Interface Master Modules

Note

A maximum of three AS-Interface master modules can be incorporated into one fieldbus node!

A single AS-Interface master module 750-655 can be placed at any position in the node. However, if two or three modules are to be placed in direct vicinity to each other in one node, they must be placed at the end of the node since in that case power for the field supply should not be derived from the power jumper contacts of the AS-Interface master modules. Also, the power for the AS-Interface module must not be supplied via the CAGE CLAMP® connections of the modules but must be fed in either between AS-Interface master module and the slaves or between the slaves.

AS-interface Circuit 1

13 14

AS-interface

Power Supply

M1 M2

750-XXX 750-XXX

ASI+

ASI-

750-655

ASI+

ASI-

M1 M2

ASI+

ASI-

750-655

ASI+

ASI-

750-600

Slave Slave Slave Slave

AS-interface

Power Supply

AS-interface Circuit 2

Slave Slave Slave Slave

Fig. 2.1.2-7: Node design with 2 AS-Interface modules

g065510e

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46 • Set up and configuration with WAGO-I/O-CHECK 2

Setting up the AS-Interface process data and mailbox length

3 Working with the AS-Interface master module

750-655

3.1 Set up and configuration with WAGO-I/O-CHECK 2

In order to work with the AS-Interface master module 750-655, first set up the communication connection to your node. Then read out the node configuration and select the required module in the navigation screen or node view.

Next set the required process data and mailbox length in the parameter setting dialog. After this, you can set up the required operating mode for the master in the process data dialog or select a slave for further processing from the list of slave addresses. Use the diagnostics function in order to correct configuration errors.

3.1.1 Setting up the AS-Interface process data and mailbox length

Open the parameter dialog for the selected bus module. To do this, click on the Settings command in the context menu for the module (node view or navigation).

The size of the internal bus process image is specified with the Process Image Length selection box. You can choose values of 12, 20, 24, 32, 40 or 48 bytes.

The size of the mailbox is specified with the Mailbox Length selection box. You can set values of 0, 6, 10, 12 or 18 bytes.

Note:

If a mailbox length of 0 bytes is selected, it will only be possible to display process data for digital slaves in monitor mode. Process data cannot then be displayed or set up in control mode.

The Overlapped Mailbox selection box is used to determine whether the mailbox data are overlapped with the AS-Interface process data (selection box activated) or whether the AS-Interface process data are transmitted after the mailbox data (selection box not activated).

The available combinations of options correspond to the configurations that can be set up using the Profibus or CANopen type files.

To display the default values for this module, click on DEFAULT. The displayed values can then be further modified.

Transfer the set values to the non-volatile memory of the module by clicking ACCEPT and exit the dialog box by pressing CLOSE.

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Set up and configuration with WAGO-I/O-CHECK 2 • 47 Setting up the operating mode for the AS-Interface master

3.1.2 Setting up the operating mode for the AS-Interface master

Open the process data dialog for the selected bus module. To do this, click on the Process data command in the context menu for the module (node view or navigation).

The current state of the AS-Interface master is shown in the Properties area. The required operating mode for the AS-Interface master is set by means of the control flags.

3.1.3 Including a new slave in the AS-Interface network

Open the process data dialog for the selected bus module. To do this, click on the Process data command in the context menu for the module (node view or navigation). Switch on the Configuration active (CA) control flag in the Properties area for the master.

You can include a new slave in the AS-Interface network in different ways.

Connect the new slave to the AS-Interface network with the address 0. The master will detect the slave automatically and will report this in the Properties area for the master with the message "Slave at address 00 (S0)". Click on this message to select the new slave and set the required address in the New Address field. The master will then scan all the slaves. Select the new slave from the slave overview and accept the configuration data by pressing STORE DETECTED and save the data in the non-volatile memory in the master by pressing STORE CONFIG.

Alternatively, set up the slave with the necessary configuration at the required address. Select the address by clicking on the appropriate line in the slave overview. Then set up the required configuration. Accept the configuration data by pressing S

ET PROJECTED and save the data in the non-volatile

memory in the master by pressing STORE CONFIG. The newly set-up slave will be detected as missing by the master after scanning the slaves. Switch off the Configuration Active (CA) control flag. Connect the new slave to the AS-Interface network. The master will automatically assign the address of the set-up slave when the Auto Address Enable (AAe) control flag is switched on and the following requirements for automatic addressing are fulfilled:

1. There is one and only one slave with the address 0 in the network,

2. One and only one slave is detected by the master as missing,

3. The configuration of the missing slave corresponds to that of the new slave.

The fulfilment of the requirements is indicated by the Auto Address Assign (AAs) and Auto Address Available (AAv) status flags.

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48 • Set up and configuration with WAGO-I/O-CHECK 2

Selecting an AS-Interface slave from the slave overview

3.1.4 Selecting an AS-Interface slave from the slave overview

Open the process data dialog for the selected bus module. To do this, click on the Process data command in the context menu for the module (node view or navigation).

After opening the dialog, the connected AS-Interface slaves are scanned and the result shown in the slave overview in the left-hand area of the dialog box.

Note:

Scanning the slaves requires some time. For monitoring purposes, the slave that is currently being scanned is indicated in the slave overview status window.

You can switch the display between A-, B- or Safety at Work Slaves with the selection field in the header line.

Select the required slave by clicking on the appropriate entry in the table. The configuration, parameter and process data for the selected slave will be shown in the right-hand part of the dialog box.

Here, you can configure this slave or observe and set up its process data.

If the selected slave is a Safety at Work Monitor, then the Safety at Work Monitor will be shown in place of the slave properties.

In order to identify a slave as a Safety at Work Monitor, choose the command Safety at Work Monitor from the Slave menu.

3.1.5 Configuring an AS-Interface slave

You can set up the configuration (IO, ID, ID1, ID2) and the required parameters for the selected slave and also assign a new address.

To set up the required configuration, select the required slave type from the Permanent Configuration line in the Description drop-down list. Alternatively, you can also save the slave type that has just been read as a permanent configuration by pressing the STORE ACTUAL CONFIGURATION button. The set values are accepted by means of the S CONFIGURATION button. When all slaves have been configured, save the configuration data in the master by pressing the SET PERMANENT

CONFIGURATION button.

ET PERMANENT

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Set up and configuration with WAGO-I/O-CHECK 2 • 49 Observing and setting up AS-Interface process data

The parameters are set by setting the bits B0 – B3 in the Permanent Parameter line. Alternatively, here too, you can save the slave type that has

just been read as permanent parameters by pressing the WRITE ACTUAL button. The set values are accepted by means of the SET PERMANENT button. When the parameters of all slaves have been set, save the parameter data in the master by pressing the STORE PARAMETER button. Please refer to the description of the appropriate slaves for the meaning of the parameters.

In order to assign a new address to the selected slave, enter the number of the new address in the New Address field and then press the SET button. Entering of addresses that are already occupied is rejected with an error message.

3.1.6 Observing and setting up AS-Interface process data

The current process data for the selected slave are displayed in the data area.

The input data are shown in the Input line and the output data can be set in the Output line. In doing so, the values are displayed depending on the function type. Digital functions are indicated by the states ON / OFF. Analog functions are displayed in hexadecimal format, as the physical measured variables relating to the analog inputs and outputs are not known to the master.

The digital output data are set by clicking on the appropriate bits and the analog output data are are set by entering the hexadecimal value for the appropriate channel.

3.1.7 AS-Interface diagnostics

The flags in the Properties area for the master are provided for diagnosing the AS-Interface master.

The status flags are used for information; the operating mode for the ASInterface master can be set with the control flags in the right-hand column.

The list of all the slaves with configuration errors (LCS) and the list of all slaves, which switch the master off line in the case of a fault (LOS), are provided for diagnosing the AS-Interface slaves.

The LCS list shows all slaves with configuration errors. The entries in the list contain the slave address, the number of errors that have occurred since the last read-out, the configuration ID and the slave description. Errors that occur and their frequency are stored in the master. In this way, even short-term errors can be detected. After it has been read out, the error memory is reset.

Select those slaves from the LOS list, which are to switch the master into the offline state in the case of a configuration error, by clicking the check boxes next to the slave address. You can mark all slaves with the ALL button and reset all marked entries with the NONE button.

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50 • Fieldbus-specific behavior

CANopen

4 Fieldbus-specific behavior

4.1 CANopen

4.1.1 Accessing the process image

The CANopen master accesses the AS-Interface mailbox and process data in the coupler / controller with process data objects (PDO).

In the default configuration, the data for the AS-Interface master module are mapped in consecutive PDOs. Each PDO can hold eight bytes of data. The maximum process image of the AS-Interface master of 48 bytes therefore includes six PDOs.

Process image

AS-interface - master

Mailbox

……

acyclical

data

Process data

cyclical

12-48

PDO for status-/controlbyte and mailbox or cyclical data

PDO for cyclical data

1 8

PDO for cyclical data

1 8

PDO for cyclical data

1 8

Fig. 4-1: PDO assignment, AS-Interface master module g065505e

The first PDO, which is assigned to an AS-Interface master module, contains the status / control byte, one empty byte and up to six bytes of mailbox or process data. The subsequent PDOs contain AS-Interface process data.

Note:

When using a CANopen coupler / controller, the maximum mailbox size is limited to six bytes.

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Page 51

Fieldbus-specific behavior • 51 CANopen

The following table shows the assignment of the process image size to the number of occupied PDOs when the mailbox is permanently superimposed (Mode 1).

Process image size

n-th PDO

n+1-th PDO

n+2-th PDO

n+3-th PDO

n+4-th PDO

n+5-th PDO

12 bytes 20 bytes 24 bytes 32 bytes 40 bytes 48 bytes

1 status-/ control byte 1 empty byte 6 byte mailbox 4 byte process data (flags and Slave 1/1A Slave 7/7A) 4 bytes empty (reserved)

free for next module

1 status-/ control byte 1 empty byte 6 byte mailbox

8 byte process data (flags and Slave 1/1A – Sl. 15/15A)

4 byte process data (Sl. 16/16A – Sl. 23/23A) 4 bytes empty (reserved)

free for next module

1 status-/ control byte 1 empty byte 6 byte mailbox

8 byte process data (flags and Slave 1/1A – Sl. 15/15A)

8 byte process data (Sl. 16/16A – Sl. 31/31A)

free for next module

1 status-/ control byte 1 empty byte 6 byte mailbox

8 byte process data (flags and Slave 1/1A – Sl. 15/15A)

8 byte process data (Sl. 16/16A – Sl. 31/31A)

8 byte process data (Slave 1B – Slave 15B)

free for next module

1 status-/ control byte 1 empty byte 6 byte mailbox

8 byte process data (flags and Slave 1/1A – Sl. 15/15A)

8 byte process data (Sl. 16/16A – Sl. 31/31A)

8 byte process data (Slave 1B – Slave 15B) 8 byte process data (Slave 16B – Slave 31B)

free for next module

1 status-/ control byte 1 empty byte 6 byte mailbox

8 byte process data (flags and Slave 1/1A – Sl. 15/15A)

8 byte process data (Sl. 16/16A – Sl. 31/31A)

8 byte process data (Slave 1B – Slave 15B) 8 byte process data (Slave 16B – Slave 31B)

8 bytes empty (reserved)

n+6-th PDO

free for next module

Here, the n-th PDO represents the first PDO occupied by the AS-Interface Master module. It contains the status / control byte, one empty byte and up to six bytes of mailbox data.

If the length of the permanently superimposed mailbox is 0 bytes, then the nth PDO only contains the status / control byte and one empty byte.

If the process image of the AS-Interface Master module is 12 bytes or 20 bytes in size, the last PDO is not fully occupied. A further module then starts with the next PDO.

Note:

When the mailbox size is 6 bytes and 62 AS-Interface slaves are connected, a process image size of 40 bytes is sufficient to transmit all process data. The module then occupies five PDOs.

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52 • Fieldbus-specific behavior

CANopen

The following assignment of the process image size to the number of occupied PDOs applies in the operating mode with suppressable mailbox (Mode 2).

Process image size

n-th PDO

n+1-th PDO

n+2-th PDO

n+3-th PDO

n+4-th PDO

n+5-th PDO

12 bytes 20 bytes 24 bytes 32 bytes 40 bytes 48 bytes

1 status / control byte 1 empty byte 6 byte mailbox or 6 byte process data (flags and Slave 1/1A – Sl. 11/11A) 4 byte process data (Sl. 12/12A – Sl. 19/19A) 4 bytes empty (reserved)

free for next module

1 status / control byte 1 empty byte 6 byte mailbox or 6 byte process data (flags and Slave 1/1A – Sl. 11/11A)

8 byte process data (Sl. 12/12A – Sl. 27/27A)

4 byte process data (Sl. 28/28A – Slave 3B) 4 bytes empty (reserved)

free for next module

1 status / control byte 1 empty byte 6 byte mailbox or 6 byte process data (flags and Slave 1/1A – Sl. 11/11A)

8 byte process data (Sl. 12/12A – Sl. 27/27A)

8 byte process data (Sl. 28/28A – Slave 11B)

free for next module

1 status / control byte 1 empty byte 6 byte mailbox or 6 byte process data (flags and Slave 1/1A – Sl. 11/11A)

8 byte process data (Sl. 12/12A – Sl. 27/27A)

8 byte process data (Sl. 28/28A – Slave 11B)

8 byte process data (Slave 12B – Slave 27B)

free for next module

1 status / control byte 1 empty byte 6 byte mailbox or 6 byte process data (flags and Slave 1/1A – Sl. 11/11A)

8 byte process data (Sl. 12/12A – Sl. 27/27A)

8 byte process data (Sl. 28/28A – Slave 11B)

8 byte process data (Slave 12B – Slave 27B) 2 byte process data (Slave 28B Slave 31B) 6 bytes empty (reserved)

free for next module

1 status / control byte 1 empty byte 6 byte mailbox or 6 byte process data (flags and Slave 1/1A – Sl. 11/11A)

8 byte process data (Sl. 12/12A – Sl. 27/27A)

8 byte process data (Sl. 28/28A – Slave 11B)

8 byte process data (Slave 12B – Slave 27B) 2 byte process data (Slave 28B Slave 31B) 6 bytes empty (reserved)

8 bytes empty (reserved)

n+6-th PDO

free for next module

The n-th PDO contains the status / control byte, one empty byte and six bytes of mailbox data when the mailbox is superimposed, or the first six bytes of process data. The subsequent PDOs contain the further process data.

Note:

When the mailbox is superimposed, it is not possible to access the first six bytes of process data (flags and Slave 1/1A to Slave 11/11A).

If the process image of the AS-Interface Master module is 12, 20, 40 or 48 bytes in size, the last PDO is not fully occupied. A further module then starts with the next PDO.

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Fieldbus-specific behavior • 53 CANopen

4.1.1.1 Example

Let a node contain the following modules with an input / output process image:

3 x 750-402 each with 4 bits of input data, 1 x 750-452 4 bytes of input data, 1 x 750-655 12 bytes of input data and 12 bytes of output data, 1 x 750-550 4 bytes of output data, 1 x 750-452 4 bytes of input data, 1 x 750-550 4 bytes of output data, 1 x 750-452 4 bytes of input data, 1 x 750-504 4 bits of output data.

By default, PDO 1 to PDO 4 are reserved for and occupied by digital and analog modules; further PDOs are not required for digital and analog modules. Apart from an AS-Interface master module, no further special modules are fitted. The AS-Interface master module occupies a process image of 12 bytes when the mailbox size is 6 bytes. The mailbox is permanently superimposed.

The 5th PDO and the 6th PDO are therefore assigned to this module. The 6th PDO contains only 4 bytes of process data.

The 7th PDO and the subsequent PDOs are free for further modules.

Data in the process image

Byte 1 2 3 4 5 6 7 8 9 10 11 12

Content C/S -- MB1 MB2 MB3 MB4 MB5 MB6 D1 D2 D3 D4

C/S Control / status byte

MB1 – MB6 Mailbox data, byte 1 - byte 6

D1 – D4 Process data, byte 1 – byte 4

Entries in the object list

Sub0 6 (Number of sub-indices)

Sub1 8 (Length of mailbox string (Sub2))

Sub2 C/S - MB1 MB2 MB3 MB4 MB5 MB6

Sub3 D1 (Process data flags + Slave 1/1A)

Sub4 D2 (Process data Slave 2/2A + Slave 3/3A)

Sub5 D3 (Process data Slave 4/4A + Slave 5/5A)

Sub6 D4 (Process data Slave 6/6A + Slave 7/7A)

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54 • Fieldbus-specific behavior

CANopen

The AS-Interface flags and process data from 7 AS-Interface slaves can be transmitted with this configuration.

1234 5678 910111213

DI DI

AI AI

AS-i

AO AO

AI AI

AO AO AI AI DO DO

Input image

AI1 C1 AI1 2C Status Mailbox Mailbox Mailbox Data Data AI2 1C AI2 2C AI3 1C AI3 2C DI1 1-DI3 4CC

Output image

Control Mailbox Mailbox Mailbox Data Data AO1 C1 AO1 C2 AO2 C1 AO2 C2 DO1 C1-C4

750-337

452

402

402 402

655

602

452

504

602

452

600550 550

TxPDO 1, DI1 C1 - DI3 C4

TxPDO 2, AI1 C1 - AI2 C2

TxPDO 3, AI3 C1 - C2

TxPDO 4, not used

TxPDO 5, Statusbyte + Mailbox

TxPDO 6, Databyte1-4

RxPDO 1, DO1 C1 - C4

RxPDO 2, AO1 C1 - AO2 C2

RxPDO 3, not used

RxPDO 4, not used

RxPDO 5, Controlbyte + Mailbox

RxPDO 6, Databyte1-4

Fig. 4-2: PDO assignment, AS-Interface master module g065509e

WAGO-I/O-SYSTEM 750 I/O Modules

Page 55

Fieldbus-specific behavior • 55 DeviceNet

4.2 DeviceNet

4.2.1 Accessing the process image

The DeviceNet Master can access the AS-Interface data in two ways.

With pre-defined instances of the assembly object, digital and analog input and output data of a node are transferred to or from the master with one command. The application in the master can then address the data in the memory. The data are stored in the master in the same way as with mapping in the coupler / controller. The byte-orientated module data (analog modules and special modules) and the bit-orientated module data (digital modules) are stored separately in the memory in arrays of bytes according to the input and output image. The appropriate array and the associated memory address can thus be determined from the type and position of the module. The data in the AS-Interface master can be directly addressed with the analog input point object or the analog output point object. The instance number of the respective object is given by the position of the module in the node.

4.2.1.1 Example

Let a node contain the following modules with an input / output process image:

The AS-Interface master module occupies a process image of 12 bytes when the mailbox size is 6 bytes. The mailbox is permanently superimposed.

WAGO-I/O-SYSTEM 750 I/O Modules

Page 56

56 • Fieldbus-specific behavior

DeviceNet

1234 5678 910111213

DI DI

AI AI

AS-i

AO AO

AI AI

AO AO AI AI DO DO

750-306

402

402 402

452

655

602

452

504

602

452

600550 550

Input image

Channel 1 Channel 2 Status Mailbox

Assembly Object Instance 9

Analog input data

Mailbox Mailbox Data Data Channel 1 Channel 2

Assembly Object Instance 8

Digital input data

Channel 1 Channel 2 DI 1-12

Output image

Control Mailbox Mailbox

Assembly Object Instance 3

Analog output data

Mailbox Data Data Channel 1 Channel 2

Assembly Object Instance 2

Digital output data

Channel 1 Channel 2 DO 1-4

Analog input data Array of Byte

Channel 1 Channel 2 Status Mailbox Mailbox Mailbox Data Data Channel 1 Channel 2 Channel 1 Channel 2

Analog output data Array of Byte

Control Mailbox Mailbox Mailbox Data

Digital input data Array of Byte

DI 1-12

Data Channel 1 Channel 2 Channel 1 Channel 2

Digital output data Array of Byte

DO 1-4

Fig. 4-3: Array assignment, AS-Interface master module g065506e

WAGO-I/O-SYSTEM 750 I/O Modules

Page 57

Fieldbus-specific behavior • 57 ETHERNET

4.3 ETHERNET

4.3.1 Modbus protocol

4.3.1.1 Accessing the process image

The data in the AS-Interface master are accessed by means of the functions for reading and writing registers. The registers can be read and written in blocks or individually. One register contains two bytes.

The assignment of the registers to the module I/O data is dependent on the order and the type of the modules. The registers are written separately according to input and output data, in increasing order, first with the data of the byte-orientated modules (analog and special modules) and then subsequently with the data of the bit-orientated modules (digital modules).

The first input or output register, which is assigned to an AS-Interface master module, contains the status / control byte and one empty byte. The registers for the permanently superimposed mailbox are attached to this. If the mailbox is set up to be superimposed, these registers contain the mailbox or process data. The further registers associated with an AS-Interface master module contain the remaining process data.

With blockwise access, the data are transmitted with one command (e.g. FC 3 – Read Multiple Registers, FC 16 – Write Multiple Registers or FC 23 – Read/Write Multiple Registers). The start address and the number of registers to be transmitted are specified in the function call. The individual data are then accessed in the higher-level controller.

The command FC 6 (Write Single Register) can be used for direct access to individual registers or the above commands can be used by setting the number of registers to be transmitted to 1.

4.3.1.1.1 Example

Let a node contain the following modules with an input / output process image:

WAGO-I/O-SYSTEM 750 I/O Modules

Page 58

58 • Fieldbus-specific behavior

ETHERNET

The AS-Interface master module occupies a process image of 12 bytes when the mailbox size is 6 bytes. The mailbox is permanently superimposed.

1234 5678 910111213

DI DI

AI AI

AS-i

AO AO

AI AI

AO AO AI AI DO DO

750-342

402

402 402

452

655

602

452

504

602

452

600550 550

Input register

Output register

0 1 2 3 4 5 6 7 8 9 10 11 12

0 1 2 3 4 5 6 7 8 9 10

Status Mailbox Mailbox Mailbox Data Data

Control Mailbox Mailbox Mailbox Data Data

Access to data with FC 3, Start address 2, Length 6

Access to data with FC 16, Start address 0, Length 6

Fig. 4-4: Register assignment, AS-Interface master module g065507e

The input data for the AS-Interface master module are mapped onto input registers 2 to 7. Register 2 contains the status byte and one empty byte. Registers 3 to 5 contain the mailbox data. Registers 6 and 7 contain the process data. The data can be read with FC 3 (start address 2, length 6).

The output data are mapped onto output registers 0 to 5. Register 0 contains the control byte and one empty byte. Registers 1 to 3 contain the mailbox data. Registers 4 and 5 contain the process data. The data can be written with FC 16 (start address 0, length 6).

WAGO-I/O-SYSTEM 750 I/O Modules

Page 59

Fieldbus-specific behavior • 59 ETHERNET

4.3.2 ETHERNET IP protocol

4.3.2.1 Accessing the process image

The AS-Interface data can be accessed in two ways with the ETHERNET IP protocol.

With pre-defined instances of the assembly object, digital and analog input and output data of a node are transferred to or from the master with one command. The application in the master can then address the data in the memory. The data are stored in the master in the same way as with mapping in the coupler / controller. The byte-orientated module data (analog modules and special modules) and the bit-orientated module data (digital modules) are stored separately in the memory according to the input and output image. The memory address can thus be determined from the type and position of the module. The data in the AS-Interface master can be directly addressed with the analog input point object or the analog output point object. The instance number of the respective object is given by the position of the module in the node.

4.3.2.1.1 Example

Let a node contain the following modules with an input / output process image:

WAGO-I/O-SYSTEM 750 I/O Modules

Page 60

60 • Fieldbus-specific behavior

ETHERNET

1234 5678 910111213

DI DI

AI AI

AS-i

AO AO

AI AI

AO AO AI AI DO DO

750-341

402

402 402

452

655

602

452

504

602

452

600550 550

Input image

Channel 1 Channel 2 Status Mailbox

Assembly Object Instance 109

Analog input data

Mailbox Mailbox Data Data Channel 1 Channel 2

Assembly Object Instance 108

Digital input data

Channel 1 Channel 2 DI 1-12

Output image

Control Mailbox Mailbox

Assembly Object Instance 103

Analog output data

Mailbox Data Data Channel 1 Channel 2

Assembly Object Instance 102

Digital input data

Channel 1 Channel 2 DO 1-4

Analog Input data Array of Byte

Channel 1 Channel 2 Status Mailbox Mailbox Mailbox Data Data Channel 1 Channel 2 Channel 1 Channel 2

Analog output data Array of Byte

Control Mailbox Mailbox Mailbox Data

Digital input data Array of Byte

DI 1-12

Data Channel 1 Channel 2 Channel 1 Channel 2

Digital output data Array of Byte

DO 1-4

Fig. 4-5: Array assignment, AS-Interface master module g065508e

WAGO-I/O-SYSTEM 750 I/O Modules

Page 61

Fieldbus-specific behavior • 61 PROFIBUS DP

4.4 PROFIBUS DP

4.4.1 Accessing the process image

The data in the AS-Interface master is accessed via the process image of the PROFIBUS master. To ensure data consistency at a 12 to 48-byte data width, the data must be mapped with system functions for consistent reading and writing in an appropriately sized array. The PLC program can then process the data in this array.

4.4.1.1 Example

Let a node contain the following modules with an input / output process image:

The AS-Interface master module occupies a process image of 12 bytes when the mailbox size is 6 bytes. The mailbox is permanently superimposed.

In the PROFIBUS master, the I/O configuration can be designed as follows:

No. Function Module PI Master *

Identification Inputs Outputs

Digital input IB12.0

Digital input IB12.1

Digital input IB12.2

Digital input

Digital input IB12.4

Digital input IB12.5

Digital input IB12.6

Digital input

Digital input IB13.0

Digital input IB13.1

Digital input IB13.2

Digital input

Analog input IW0 4

Analog input

750-402 4 DI/24 V DC/3.0 ms

0x10

*750-402 4 DI/24 V DC/3.0 ms

0x00

750-402 4 DI/24 V DC/3.0 ms

0x10

750-452 2 AI/0-20 mA/diff.

0x51

IB12.3

IB12.7

IB13.3

IW2

WAGO-I/O-SYSTEM 750 I/O Modules

Page 62

62 • Fieldbus-specific behavior

PROFIBUS DP

No. Function Module PI Master *

Identification Inputs Outputs

5 Power supply Power supply module --- ---

7 Power supply Power supply module --- ---

12 Power supply Power supply module --- ---

14 End module End module --- ---

Status / Control IW20 QW10

Mailbox IW22 QW12

Mailbox IW24 QW14

Mailbox IW26 QW16

Data IW28 QW18

Data

Analog output QW0 8

Analog output

Analog input IW4 9

Analog input

Analog output QW4 10

Analog output

Analog input IW8 11

Analog input

Digital output QB8.0

Digital output QB8.1

Digital output QB8.2

Digital output

750-655 AS-Interface Master

12 Byte PA

0x8B

750-550 2 AO/0-10 V

0x61

750-452 2 AI/0-20 mA/diff.

0x51

750-550 2 AO/0-10 V

0x61

750-452 2 AI/0-20 mA/diff.

0x51

750-504 4 DO/24 V DC/0.5 A

0x20

IW30 QW20

QW2

IW6

QW6

IW10

QB8.3

* The master addresses listed in the table correspond to the allocation of the process data given in the master configuration.

If the PROFIBUS master is a Siemens S7 PLC, the data will be consistently read and written with system functions SFC14 or SFC15.

To map the IW20 to IW30 input data in the MW100 to MW110 array, the function to be called is:

CALL SFC 14 LADDR := W#16#14 (read from input address IW20) RECORD := P#M100.0 BYTE 12 (write 12 bytes to MW100) RET_VAL := MW112 (write error messages to MW112)

To map the QW10 to QW20 output data in the MW114 to MW124 array, the function to be called is:

CALL SFC 15 LADDR := W#16#0A (write to output address QW10)

WAGO-I/O-SYSTEM 750 I/O Modules

Page 63

Fieldbus-specific behavior • 63 PROFIBUS DP

RECORD := P#M114.0 BYTE 12 (read 12 bytes from MW114) RET_VAL := MW126 (write error messages to MW126)

1234 5678 910111213

DI DI

AI AI

AS-i

AO AO

AI AI

AO AO AI AI DO DO

750-333

402

402 402

452

655

602

452

504

602

452

600550 550

Input image

AI1 C1 AI1 2C Status Mailbox Mailbox Mailbox Data Data AI2 1C AI2 2C AI3 1C AI3 2C DI1 1-DI3 4CC

Output image

Control Mailbox Mailbox Mailbox Data Data AO1 C1 AO1 C2 AO2 C1 AO2 C2 DO1 C1-C4

Process image of the PROFIBUS master

IW0 IW2 IW4 IW6 IW8 IW10 IW12 IW20 IW22 IW24 IW26 IW28 IW30

QW0

CALL SFC 14 LADDR := W#16#14 RECORD := P# M100.0 BYTE 12 RET_VAL := MW112

MW100 MW102 MW104 MW106 MW108 MW110 MW112

QW2 QW4 QW6 QW8 QW10 QW12 QW14 QW16 QW18 QW20

CALL SFC 15 LADDR := W#16#0A RECORD := P# M114.0 BYTE 12 RET_VAL := MW126

MW114 MW116 MW118 MW120 MW122 MW124 MW126

Fig. 4-6: Process image assignment, AS-Interface master module g065511e

WAGO-I/O-SYSTEM 750 I/O Modules

Page 64

64 • Fieldbus-specific behavior

LON

4.5 LON

The AS-Interface master 750-655 is supported by the LON fieldbus coupler 750-319 and by the programmable LON fieldbus controller 750-819.

WAGO-I/O-SYSTEM 750 I/O Modules

Page 65

Appendix • 65 Overview of mailbox commands

5 Appendix

5.1 Overview of mailbox commands

Opcode Value Meaning

IDLE 0x00 No order 2 2 ● ● ● ● 73

Configuration

GET_LDS_A/B 0x46 Get_List_of_Detected_Slaves 2 10 A/B ● ● ● 89

READ_CDI 0x28 Read_Actual_Configuration 3 4 ● ● ● ● 82

STORE_CDI 0x07 Store_Actual_Configuration 2 2 ● ● ● ● 81

SET_PCD 0x25 Set_Permanent_Configuration 5 2 ● ● ● ● 79

GET_PCD 0x26 Get_Permanent_Configuration 3 4 ● ● ● ● 80

GET_LPS_A/B 0x44 Get_List_of_Projected_Slaves 2 10 A/B ● ● ● 85

SET_LPS_A/B 0x6B Set_List_of_Projected_Slaves 10 2 A/B ● ● ● 83

GET_LAS_A/B 0x45 Get_List_of_Activated_Slaves 2 10 A/B ● ● ● 87

Parameters

GET_PP 0x01 Get_Permanent_Parameter 3 3 ● ● ● ● 75

SET_PP 0x43 Set_Permanent_Parameter 4 2 ● ● ● ● 74

READ_PI 0x03 Read_Parameter_from_Image 3 3 ● ● ● ● 77

Req Len

Executable with

Res

mailbox

Len

Page

6 10 12 18

WRITE_P 0x02 Write_Parameter 4 3 ● ● ● ● 76

STORE_PI 0x04 Store_Actual_Parameter_Image 2 2 ● ● ● ● 78

GET_DELTA_A/B*) 0x57 Get list of config. diff. 2 10 A/B ● ● ● 110

SLAVE_ADDR 0x0D Change_Slave_Address 4 2 ● ● ● ● 96

Diagnostics

GET_FLAGS 0x47 Get_Flags 2 5 ● ● ● ● 91

GET_LPF_A/B 0x3E Get_List_of_Peripheral_Failure 2 10 A/B ● ● ● 99

GET_LCS_A/B*) 0x6C Get_List_of_Corrupted_Slaves 2 10 A/B ● ● ● 116

GET_TEC_X*) 0x66 Get transm.err.counters X-Slaves 4

Operation Modes

SET_OP_MODE 0x0C Set_Operation_Mode 3 2 ● ● ● ● 93

SET_OFFLINE 0x0A Set_Off-Line_Mode 3 2 ● ● ● ● 94

SET_DATA_EX 0x48 Set_Data_Exchange_Active 3 2 ● ● ● ● 95

SET_AAE 0x0B Set_Auto_Adress_Enable 3 2 ● ● ● ● 97

GET_LOS_A/B*) 0x61 GET_LOS 2 10 A/B ● ● ● 118

SET_LOS_A/B*) 0x6D SET_LOS 10 2 A/B ● ● ● 120

● ● ● ● 122

≥5

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Page 66

66 • Appendix

Overview of mailbox commands

Opcode Value Meaning

Special Functions

WRITE_XID1 0x3F Write_Extended_ID-Code_1 3 2 ● ● ● ● 101

EXEC_CMD 0x49 Execute_Command 4 3 ● ● ● ● 98

FP_PARAM*) 0x7D "Functional Profile" Param.

FP_DATA*) 0x7E "Functional Profile" Data

Digital Slaves

RD_SLV_DATA*) 0x5E Read_Slave_Data 3 6 ● ● ● ● 102

WR_SLV_DATA*) 0x5F Write_Slave_Data 4 2 ● ● ● ● 103

16 Bit Slaves

RD_7X_IN_A/B 0x50 Read 1 7.3-slave in.data 3 10 A/B ● ● ● 104

WR_16BIT_OUT_S 0x6F WR_16BIT_OUT_S 6 2 ● ● ● ● 107

WR_7X_OUT 0x51 Write 1 7.3-slave out.data 11 2 - - ● ● 106

RD_7X_OUT_A/B 0x52 Read 1 7.3-slave out.data 3 10 A/B ● ● ● 108

Extended 16 Bit Slaves

Req Len

≥3 ≥2

Executable with

Res

mailbox

Len

● ● ● ● 124

● ● ● ● 125

Page

6 10 12 18

WR_74_PARAM 0x5A Write S-7.4-slave parameter

RD_74_PARAM 0x5B Read S-7.4-slave parameter 4

RD_74_ID 0x5C Read S-7.4-slave ID string 4

RD_74_DIAG 0x5D Read S-7.4-slave diagnosis string 4

Housekeeping

BUTTONS*) 0x75 Disable Pushbuttons 3 2 ● ● ● ● 123

*) Command in addition to AS-Interface specification

● Command is executable

- Command is not executable

A/B Command is executable with changeover between A/B slaves or channels

≥6

2 ● ● ● ● 112

● ● ● ● 113

≥3

● ● ● ● 114

≥3

● ● ● ● 115

≥3

WAGO-I/O-SYSTEM 750 I/O Modules

Page 67

Appendix • 67 Overview of mailbox commands sorted by function

5.2 Overview of mailbox commands sorted by function

Opcode Value Meaning

FP_DATA*) 0x7E "Functional Profile" Data

FP_PARAM*) 0x7D "Functional Profile" Param.

SLAVE_ADDR 0x0D Change_Slave_Address 4 2 ● ● ● ● 96

BUTTONS*) 0x75 Disable Pushbuttons 3 2 ● ● ● ● 123

EXEC_CMD 0x49 Execute_Command 4 3 ● ● ● ● 98

GET_DELTA_A/B*) 0x57 Get list of config. diff. 2 10 A/B ● ● ● 110

GET_TEC_X*) 0x66 Get transm.err.counters X-Slaves 4

GET_FLAGS 0x47 Get_Flags 2 5 ● ● ● ● 91

GET_LAS_A/B 0x45 Get_List_of_Activated_Slaves 2 10 A/B ● ● ● 87

GET_LCS_A/B*) 0x6C Get_List_of_Corrupted_Slaves 2 10 A/B ● ● ● 116

GET_LDS_A/B 0x46 Get_List_of_Detected_Slaves 2 10 A/B ● ● ● 89

GET_LPF_A/B 0x3E Get_List_of_Peripheral_Failure 2 10 A/B ● ● ● 99

GET_LPS_A/B 0x44 Get_List_of_Projected_Slaves 2 10 A/B ● ● ● 85

GET_LOS_A/B*) 0x61 GET_LOS 2 10 A/B ● ● ● 118

Req Len

≥3 ≥2

Executable with

Res

mailbox

Len

≥5

Page

6 10 12 18

● ● ● ● 125

● ● ● ● 124

● ● ● ● 122

GET_PCD 0x26 Get_Permanent_Configuration 3 4 ● ● ● ● 80

GET_PP 0x01 Get_Permanent_Parameter 3 3 ● ● ● ● 75

IDLE 0x00 Kein Auftrag 2 2 ● ● ● ● 73

RD_7X_IN_A/B 0x50 Read 1 7.3-slave in.data 3 10 A/B ● ● ● 104

RD_7X_OUT_A/B 0x52 Read 1 7.3-slave out.data 3 10 A/B ● ● ● 108

RD_74_DIAG 0x5D Read S-7.4-slave diagnosis string 4

RD_74_ID 0x5C Read S-7.4-slave ID string 4

RD_74_PARAM 0x5B Read S-7.4-slave parameter 4

READ_CDI 0x28 Read_Actual_Configuration 3 4 ● ● ● ● 82

READ_PI 0x03 Read_Parameter_from_Image 3 3 ● ● ● ● 77

RD_SLV_DATA*) 0x5E Read_Slave_Data 3 6 ● ● ● ● 102

SET_AAE 0x0B Set_Auto_Adress_Enable 3 2 ● ● ● ● 97

SET_DATA_EX 0x48 Set_Data_Exchange_Active 3 2 ● ● ● ● 95

SET_LPS_A/B 0x6B Set_List_of_Projected_Slaves 10 2 A/B ● ● ● 83

SET_LOS_A/B*) 0x6D SET_LOS 10 2 A/B ● ● ● 120

SET_OFFLINE 0x0A Set_Off-Line_Mode 3 2 ● ● ● ● 94

≥3

● ● ● ● 115

● ● ● ● 114

● ● ● ● 113

SET_OP_MODE 0x0C Set_Operation_Mode 3 2 ● ● ● ● 93

SET_PCD 0x25 Set_Permanent_Configuration 5 2 ● ● ● ● 79

SET_PP 0x43 Set_Permanent_Parameter 4 2 ● ● ● ● 74

WAGO-I/O-SYSTEM 750 I/O Modules

Page 68

68 • Appendix

Overview of mailbox commands sorted by function

Opcode Value Meaning

STORE_CDI 0x07 Store_Actual_Configuration 2 2 ● ● ● ● 81

STORE_PI 0x04 Store_Actual_Parameter_Image 2 2 ● ● ● ● 78

WR_16BIT_OUT_S 0x6F WR_16BIT_OUT_S 6 2 ● ● ● ● 107

WR_7X_OUT 0x51 Write 1 7.3-slave out.data 11 2 - - ● ● 106

WR_74_PARAM 0x5A Write S-7.4-slave parameter

WRITE_XID1 0x3F Write_Extended_ID-Code_1 3 2 ● ● ● ● 101

WRITE_P 0x02 Write_Parameter 4 3 ● ● ● ● 76

WR_SLV_DATA*) 0x5F Write_Slave_Data 4 2 ● ● ● ● 103

*) Command in addition to AS-Interface specification

● Command is executable

- Command is not executable

A/B Command is executable with changeover between A/B slaves or channels

Req Len

≥6

Executable with

Res

mailbox

Len

6 10 12 18

2 ● ● ● ● 112

Page

WAGO-I/O-SYSTEM 750 I/O Modules

Page 69

Appendix • 69 Overview of mailbox commands sorted by opcode

5.3 Overview of mailbox commands sorted by opcode

Opcode Value Meaning

BUTTONS*) 0x75 Disable Pushbuttons 3 2 ● ● ● ● 123

EXEC_CMD 0x49 Execute_Command 4 3 ● ● ● ● 98

FP_DATA*) 0x7E "Functional Profile" Data

FP_PARAM*) 0x7D "Functional Profile" Param.

GET_DELTA_A/B*) 0x57 Get list of config. diff. 2 10 A/B ● ● ● 110

GET_FLAGS 0x47 Get_Flags 2 5 ● ● ● ● 91

GET_LAS_A/B 0x45 Get_List_of_Activated_Slaves 2 10 A/B ● ● ● 87

GET_LCS_A/B*) 0x6C Get_List_of_Corrupted_Slaves 2 10 A/B ● ● ● 116

GET_LDS_A/B 0x46 Get_List_of_Detected_Slaves 2 10 A/B ● ● ● 89

GET_LOS_A/B*) 0x61 GET_LOS 2 10 A/B ● ● ● 118

GET_LPF_A/B 0x3E Get_List_of_Peripheral_Failure 2 10 A/B ● ● ● 99

GET_LPS_A/B 0x44 Get_List_of_Projected_Slaves 2 10 A/B ● ● ● 85

GET_PCD 0x26 Get_Permanent_Configuration 3 4 ● ● ● ● 80

GET_PP 0x01 Get_Permanent_Parameter 3 3 ● ● ● ● 75

Req Len

≥3 ≥2

Executable with

Res

mailbox

Len

Page

6 10 12 18

● ● ● ● 125

● ● ● ● 124

GET_TEC_X*) 0x66 Get transm.err.counters X-Slaves 4

IDLE 0x00 No order 2 2 ● ● ● ● 73

RD_74_DIAG 0x5D Read S-7.4-slave diagnosis string 4

RD_74_ID 0x5C Read S-7.4-slave ID string 4

RD_74_PARAM 0x5B Read S-7.4-slave parameter 4

RD_7X_IN_A/B 0x50 Read 1 7.3-slave in.data 3 10 A/B ● ● ● 104

RD_7X_OUT_A/B 0x52 Read 1 7.3-slave out.data 3 10 A/B ● ● ● 108

RD_SLV_DATA*) 0x5E Read_Slave_Data 3 6 ● ● ● ● 102

READ_CDI 0x28 Read_Actual_Configuration 3 4 ● ● ● ● 82

READ_PI 0x03 Read_Parameter_from_Image 3 3 ● ● ● ● 77

SET_AAE 0x0B Set_Auto_Adress_Enable 3 2 ● ● ● ● 97

SET_DATA_EX 0x48 Set_Data_Exchange_Active 3 2 ● ● ● ● 95

SET_LOS_A/B*) 0x6D SET_LOS 10 2 A/B ● ● ● 120

SET_LPS_A/B 0x6B Set_List_of_Projected_Slaves 10 2 A/B ● ● ● 83

SET_OFFLINE 0x0A Set_Off-Line_Mode 3 2 ● ● ● ● 94

SET_OP_MODE 0x0C Set_Operation_Mode 3 2 ● ● ● ● 93

≥5

≥3

● ● ● ● 122

● ● ● ● 115

● ● ● ● 114

● ● ● ● 113

SET_PCD 0x25 Set_Permanent_Configuration 5 2 ● ● ● ● 79

SET_PP 0x43 Set_Permanent_Parameter 4 2 ● ● ● ● 74

SLAVE_ADDR 0x0D Change_Slave_Address 4 2 ● ● ● ● 96

WAGO-I/O-SYSTEM 750 I/O Modules

Page 70

70 • Appendix

Overview of mailbox commands sorted by opcode

Opcode Value Meaning

STORE_CDI 0x07 Store_Actual_Configuration 2 2 ● ● ● ● 81

STORE_PI 0x04 Store_Actual_Parameter_Image 2 2 ● ● ● ● 78

WR_16BIT_OUT_S 0x6F WR_16BIT_OUT_S 6 2 ● ● ● ● 107

WR_74_PARAM 0x5A Write S-7.4-slave parameter

WR_7X_OUT 0x51 Write 1 7.3-slave out.data 11 2 - - ● ● 106

WR_SLV_DATA*) 0x5F Write_Slave_Data 4 2 ● ● ● ● 103

WRITE_P 0x02 Write_Parameter 4 3 ● ● ● ● 76

WRITE_XID1 0x3F Write_Extended_ID-Code_1 3 2 ● ● ● ● 101

*) Command in addition to AS-Interface specification

● Command is executable

- Command is not executable

A/B Command is executable with changeover between A/B slaves or channels

Req Len

≥6

Executable with

Res

mailbox

Len

6 10 12 18

2 ● ● ● ● 112

Page

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Appendix • 71 Overview of mailbox commands sorted by value

5.4 Overview of mailbox commands sorted by value

Opcode Value Meaning

IDLE 0x00 No order 2 2 ● ● ● ● 73

GET_PP 0x01 Get_Permanent_Parameter 3 3 ● ● ● ● 75

WRITE_P 0x02 Write_Parameter 4 3 ● ● ● ● 76

READ_PI 0x03 Read_Parameter_from_Image 3 3 ● ● ● ● 77

STORE_PI 0x04 Store_Actual_Parameter_Image 2 2 ● ● ● ● 78

STORE_CDI 0x07 Store_Actual_Configuration 2 2 ● ● ● ● 81

SET_OFFLINE 0x0A Set_Off-Line_Mode 3 2 ● ● ● ● 94

SET_AAE 0x0B Set_Auto_Adress_Enable 3 2 ● ● ● ● 97

SET_OP_MODE 0x0C Set_Operation_Mode 3 2 ● ● ● ● 93

SLAVE_ADDR 0x0D Change_Slave_Address 4 2 ● ● ● ● 96

SET_PCD 0x25 Set_Permanent_Configuration 5 2 ● ● ● ● 79

GET_PCD 0x26 Get_Permanent_Configuration 3 4 ● ● ● ● 80

READ_CDI 0x28 Read_Actual_Configuration 3 4 ● ● ● ● 82

GET_LPF_A/B 0x3E Get_List_of_Peripheral_Failure 2 10 A/B ● ● ● 99

Req Len

Executable with

Res

mailbox

Len

Page

6 10 12 18

WRITE_XID1 0x3F Write_Extended_ID-Code_1 3 2 ● ● ● ● 101

SET_PP 0x43 Set_Permanent_Parameter 4 2 ● ● ● ● 74

GET_LPS_A/B 0x44 Get_List_of_Projected_Slaves 2 10 A/B ● ● ● 85

GET_LAS_A/B 0x45 Get_List_of_Activated_Slaves 2 10 A/B ● ● ● 87

GET_LDS_A/B 0x46 Get_List_of_Detected_Slaves 2 10 A/B ● ● ● 89

GET_FLAGS 0x47 Get_Flags 2 5 ● ● ● ● 91

SET_DATA_EX 0x48 Set_Data_Exchange_Active 3 2 ● ● ● ● 95

EXEC_CMD 0x49 Execute_Command 4 3 ● ● ● ● 98

RD_7X_IN_A/B 0x50 Read 1 7.3-slave in.data 3 10 A/B ● ● ● 104

WR_7X_OUT 0x51 Write 1 7.3-slave out.data 11 2 - - ● ● 106

RD_7X_OUT_A/B 0x52 Read 1 7.3-slave out.data 3 10 A/B ● ● ● 108

GET_DELTA_A/B*) 0x57 Get list of config. diff. 2 10 A/B ● ● ● 110

WR_74_PARAM 0x5A Write S-7.4-slave parameter

RD_74_PARAM 0x5B Read S-7.4-slave parameter 4

RD_74_ID 0x5C Read S-7.4-slave ID string 4

RD_74_DIAG 0x5D Read S-7.4-slave diagnosis string 4

≥6

2 ● ● ● ● 112

≥3

● ● ● ● 113

● ● ● ● 114

● ● ● ● 115

RD_SLV_DATA*) 0x5E Read_Slave_Data 3 6 ● ● ● ● 102

WR_SLV_DATA*) 0x5F Write_Slave_Data 4 2 ● ● ● ● 103

GET_LOS_A/B*) 0x61 GET_LOS 2 10 A/B ● ● ● 118

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Overview of mailbox commands sorted by value

Opcode Value Meaning

GET_TEC_X*) 0x66 Get transm.err.counters X-Slaves 4

SET_LPS_A/B 0x6B Set_List_of_Projected_Slaves 10 2 A/B ● ● ● 83

GET_LCS_A/B*) 0x6C Get_List_of_Corrupted_Slaves 2 10 A/B ● ● ● 116

SET_LOS_A/B*) 0x6D SET_LOS 10 2 A/B ● ● ● 120

WR_16BIT_OUT_S 0x6F WR_16BIT_OUT_S 6 2 ● ● ● ● 107

BUTTONS*) 0x75 Disable Pushbuttons 3 2 ● ● ● ● 123

FP_PARAM*) 0x7D "Functional Profile" Param.

FP_DATA*) 0x7E "Functional Profile" Data

*) Command in addition to AS-Interface specification

● Command is executable

- Command is not executable

A/B Command is executable with changeover between A/B slaves or channels

Req Len

≥3 ≥2

Executable with

Res

mailbox

Len

≥5

Page

6 10 12 18

● ● ● ● 122

● ● ● ● 124

● ● ● ● 125

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Appendix • 73 Mailbox command - Reference

5.5 Mailbox command - Reference

5.5.1 Mailbox commands

IDLE(IDLE, 0x00)

This is the value for "opcode" 0 so no order is executed.

Request

Byte 27 26 25 24 23 22 21 20

2 T - -

0x00

Response

Byte 27 26 25 24 23 22 21 20

2 T Result

0x00

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Set parameter value (SET_PP, 0x43)

SET_PP: Set_Permanent_Parameter

A parameter value for the specified AS-Interface slave is set up with this command. The AS-Interface slave parameter is stored in the non-volatile memory of the AS-Interface master.

The AS-Interface slave parameter that has been set up is not sent to the ASInterface slave until the AS-Interface master is switched on. The WRITE_P command must be used to temporarily change the AS-Interface slave parameter.

Request

Byte 27 26 25 24 23 22 21 20

2 T - -

3 - B Slave address

4 - PP

0 Standard AS-Interface slave or AS-Interface slave with extended addressing mode

in address range A

1 AS-Interface slave with extended addressing mode in address range B

0x43

Response

Byte 27 26 25 24 23 22 21 20

2 T Result

0x43

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Appendix • 75 Mailbox command - Reference

Read set-up parameter value (GET_PP, 0x01)

GET_PP: Get_Permanent_Parameter

The parameter value for the specified slave is read from the non-volatile memory with this command.

Request

Byte 27 26 25 24 23 22 21 20

2 T - -

3 - B Slave address

0 Standard AS-Interface slave or AS-Interface slave with extended addressing mode

in address range A

1 AS-Interface slave with extended addressing mode in address range B

0x01

Response

Byte 27 26 25 24 23 22 21 20

2 T Result

3 - PP

0x01

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Write parameter value (WRITE_P, 0x02)

WRITE_P: Write_Parameter

A parameter value is entered at the appropriate point in the parameter list and transferred to the specified AS-Interface slave with this command.

This parameter is stored in the non-volatile memory of the AS-Interface master.

The command SET_PP must be used for setting a parameter.

After the AS-Interface slave has received the parameter value, it returns the data for the current parameter value as a "slave response". This value can be different from the parameter value transmitted.

Request

Byte 27 26 25 24 23 22 21 20

2 T - -

3 - B Slave address

4 - Parameter

0 Standard AS-Interface slave or AS-Interface slave with extended addressing mode

in address range A

1 AS-Interface slave with extended addressing mode in address range B

0x02

Response

Byte 27 26 25 24 23 22 21 20

2 T Result

3 - Slave response

0x02

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Appendix • 77 Mailbox command - Reference

Read parameter value (READ_PI, 0x03)

READ_PI: Read_Parameter

This command returns the current parameter value from the parameter list for the appropriate slave. This value must not be confused with the slave response from the command WRITE_P, as the parameter is read from the list in the master.

Request

Byte 27 26 25 24 23 22 21 20

2 T - -

3 - B Slave address

0 Standard AS-Interface slave or AS-Interface slave with extended addressing mode

in address range A

1 AS-Interface slave with extended addressing mode in address range B

0x03

Response

Byte 27 26 25 24 23 22 21 20

2 T Result

3 - PI

0x03

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Set actual parameter value (STORE_PI, 0x04)

STORE_PI: Store_Actual_Parameter

This command overwrites the set parameter values with the current actual parameter values in the non-volatile memory. The current parameters of all AS-Interface slaves are set up in this way.

Request

Byte 27 26 25 24 23 22 21 20

2 T - -

0x04

Response

Byte 27 26 25 24 23 22 21 20

2 T Result

0x04

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Appendix • 79 Mailbox command - Reference

Set configuration data (SET_PCD, 0x25)

SET_PCD: Set_Permanent_Configuration

The following configuration data are set up for the specified AS-Interface slave with this command:

• I/O configuration

• ID code

• Extended ID code 1

• Extended ID code 2

The configuration data are stored in the non-volatile memory of the ASInterface master. Based on this configuration data (and the LPS, see SET_LPS), the AS-Interface master can determine whether there is a configuration error by comparing with the configuration data of the slaves actually connected to the AS-Interface.

The execution of this command is associated with a change into the offline phase and the subsequent restart of the AS-Interface master in order to return to normal mode. This command is only executed in set-up mode.

If the specified AS-Interface slave does not support extended ID codes, the value F

must be specified for xID1 and xID2.

hex

Request

Byte 27 26 25 24 23 22 21 20

2 T - -

3 - B Slave address

4 xID2 xID1

5 ID I0

0 Standard AS-Interface slave or AS-Interface slave with extended addressing mode

in address range A

1 AS-Interface slave with extended addressing mode in address range B

0x25

Byte 27 26 25 24 23 22 21 20

2 T Result

WAGO-I/O-SYSTEM 750 I/O Modules

Response

0x25

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Read set configuration data (GET_PCD, 0x26)

GET_PCD: Get_Permanent_Configuration

This command returns the configuration data that has been set up for the specified AS-Interface slave:

• I/O configuration

• ID code

• Extended ID code 1

• Extended ID code 2

Request

Byte 27 26 25 24 23 22 21 20

2 T - -

3 - B Slave address

0 Standard AS-Interface slave or AS-Interface slave with extended addressing mode

in address range A

1 AS-Interface slave with extended addressing mode in address range B

0x26

Response

Byte 27 26 25 24 23 22 21 20

2 T Result

3 xID2 xID1

4 ID I0

0x26

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Appendix • 81 Mailbox command - Reference

Set actual configuration data (STORE_CDI, 0x07)

STORE_CDI: Store_Actual_Configuration

The "ACTUAL" configuration data (I/O configuration, ID code, extended ID1 code and extended ID2 code) of all AS-Interface slaves detected on the ASInterface are stored in the non-volatile memory as (REQUIRED) configuration data with this call. The list of activated slaves (LAS) is similarly incorporated into the list of set-up AS-Interface slaves (LPS).

When this command is executed, the AS-Interface switches the master into the offline phase and then returns to normal mode (restart AS-Interface master).

This command is only executed in set-up mode.

Request

Byte 27 26 25 24 23 22 21 20

2 T - -

0x07

Response

Byte 27 26 25 24 23 22 21 20

2 T Result

0x07

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Read actual configuration data (READ_CDI, 0x28)

READ_CDI: Read_Actual_Configuration

The following configuration data for an addressed AS-Interface slave determined by the AS-Interface master on the AS-Interface are read with this call:

• I/O configuration

• ID code

• Extended ID1 code

• Extended ID2 code

The configuration data are defined by the manufacturer of the AS-Interface slave.

Request

Byte 27 26 25 24 23 22 21 20

2 T - -

3 - B Slave address

0 Standard AS-Interface slave or AS-Interface slave with extended addressing mode

in address range A

1 AS-Interface slave with extended addressing mode in address range B

0x28

Response

Byte 27 26 25 24 23 22 21 20

2 T Result

3 xID2 xID1

4 ID I0

0x28

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Appendix • 83 Mailbox command - Reference

Set up LPS (SET_LPS_A/B, 0x6B)

The list of set-up AS-Interface slaves is transferred to the non-volatile memory of the master with this call.

When this command is executed, the AS-Interface switches the master into the offline phase and then returns to normal mode (restart AS-Interface master).

This command is only executed in set-up mode.

Using the A and B slave switching, this command can also be used for a 6byte mailbox. If the A/B flag is not set, the data for the A slaves are transmitted first and then the data for the B slaves. If the flag is set, the data for the B slaves are transmitted first and then the data for the A slaves.

Note:

In order to transmit the data for all slaves with a 6-byte mailbox, the command must be called once with A/B = 0 and once with A/B = 1.

Request (for A/B = 0)

Byte 27 26 25 24 23 22 21 20

2 T 0 0 -

3 7A 6A 5A 4A 3A 2A 1A -

… …

6 31A 30A 29A 28A 27A 26A 25A 24A

7 7B 6B 5B 4B 3B 2B 1B -

… …

10 31B 30B 29B 28B 27B 26B 25B 24B

0x6B

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Request (for A/B = 1)

Byte 27 26 25 24 23 22 21 20

2 T 0 1 -

3 7B 6B 5B 4B 3B 2B 1B -

… …

6 31B 30B 29B 28B 27B 26B 25B 24B

7 7A 6A 5A 4A 3A 2A 1A -

… …

10 31A 30A 29A 28A 27A 26A 25A 24A

0x6B

Response

Byte 27 26 25 24 23 22 21 20

2 T Result

0x6B

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Appendix • 85 Mailbox command - Reference

Read LPS (GET_LPS_A/B, 0x44)

The list of set-up AS-Interface slaves is read from the AS-Interface master module with this call.

Note:

In order to transmit the data for all slaves with a 6-byte mailbox, the command must be called once with A/B = 0 and once with A/B = 1.

Request

Byte 27 26 25 24 23 22 21 20

2 T 0 A/B -

0x44

Response (for A/B = 0)

Byte 27 26 25 24 23 22 21 20

2 T Result

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

… …

6 31A 30A 29A 28A 27A 26A 25A 24A

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

… …

10 31B 30B 29B 28B 27B 26B 25B 24B

0x44

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Response (for A/B = 1)

Byte 27 26 25 24 23 22 21 20

2 T Result

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

… …

6 31B 30B 29B 28B 27B 26B 25B 24B

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

… …

10 31A 30A 29A 28A 27A 26A 25A 24A

0x44

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Appendix • 87 Mailbox command - Reference

Read LAS (GET_LAS_A/B, 0x45)

The list of activated AS-Interface slaves LAS is read from the AS-Interface master module with this call.

Note:

In order to transmit the data for all slaves with a 6-byte mailbox, the command must be called once with A/B = 0 and once with A/B = 1.

Request

Byte 27 26 25 24 23 22 21 20

2 T 0 A/B -

0x45

Response (for A/B = 0)

Byte 27 26 25 24 23 22 21 20

2 T Result

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

… …

6 31A 30A 29A 28A 27A 26A 25A 24A

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

… …

10 31B 30B 29B 28B 27B 26B 25B 24B

0x45

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Response (for A/B = 1)

Byte 27 26 25 24 23 22 21 20

2 T Result

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

… …

6 31B 30B 29B 28B 27B 26B 25B 24B

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

… …

10 31A 30A 29A 28A 27A 26A 25A 24A

0x45

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Appendix • 89 Mailbox command - Reference

Read LDS (GET_LDS_A/B, 0x46)

The list of detected AS-Interface slaves LDS is read from the AS-Interface master module with this call.

Note:

In order to transmit the data for all slaves with a 6-byte mailbox, the command must be called once with A/B = 0 and once with A/B = 1.

Request

Byte 27 26 25 24 23 22 21 20

2 T 0 A/B -

0x46

Response (for A/B = 0)

Byte 27 26 25 24 23 22 21 20

2 T Result

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

… …

6 31A 30A 29A 28A 27A 26A 25A 24A

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

… …

10 31B 30B 29B 28B 27B 26B 25B 24B

0x46

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Response (for A/B = 1)

Byte 27 26 25 24 23 22 21 20

2 T Result

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

… …

6 31B 30B 29B 28B 27B 26B 25B 24B

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

… …

10 31A 30A 29A 28A 27A 26A 25A 24A

0x46

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Appendix • 91 Mailbox command - Reference

Read flags (GET_FLAGS, 0x47)

The flags according to the AS-Interface slave specification are read from the AS-Interface master module with this call.

Request

Byte 27 26 25 24 23 22 21 20

2 T - -

0x47

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92 • Appendix

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Response

Byte 27 26 25 24 23 22 21 20

2 T Response

3 - Pok

4 OR APF NA CA AAv AAs S0 Cok

5 – AAe OL DX

Pok Periphery OK: The flag is set if no AS-Interface slave signals a

S0 LDS.0: The flag is set if an AS-Interface slave with

AAs Auto_Address_Assign: The flag is set if automatic addressing is possible

AAv Auto_Address_Available: The flag is set if automatic addressing can be carried

CA Configuration_Active: The flag is set in set-up mode and reset in protected

NA Normal_Operation_Active: The flag is set when the AS-Interface master is in

0x47

peripheral fault.

operating address 0 is present.

(i.e. AUTO_ADDR_ENABLE = 1 and no "incorrect" AS-Interface slave is connected to the AS-Interface).

out (i.e. one and only one AS-Interface slave has currently failed).

mode.

normal mode.

APF APF: The flag is set if the voltage on the AS-Interface

cable is too low.

OR Offline_Ready: The flag is set when the AS-Interface master is the

offline phase.

Cok Config_Ok: The flag is set when the required configuration (the

set configuration) and the actual configuration correspond.

AAe Auto_Address_Enable: The flag indicates whether automatic addressing has

been inhibited (bit = 0) or enabled (bit = 1) by the user.

OL Offline: The flag is set when the offline operating state is to

be assumed or has already been assumed.

DX Data_Exchange_Active: If the "DataExchangeActive" flag is set, data

exchange with the AS-Interface slaves is enabled in the data exchange phase. If the bit is not set, data exchange with the slaves is inhibited. In this case, Read-ID telegrams are sent instead of data telegrams. The bit is set by the AS-Interface master on entering the offline phase.

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Appendix • 93 Mailbox command - Reference

Set operating mode (SET_OP_MODE, 0x0C)

SET_OP_MODE: Set_Operation_Mode

This call can be used to select between set-up mode and protected mode.

The AS-Interface master should only be operated in set-up mode during commissioning (when setting up). By default, it is operated in protected mode.

In protected mode, only those AS-Interface slaves are activated, which have been marked in the LPS and the required and actual configurations of which correspond, i.e. when the I/O configuration and the ID code of the detected AS-Interface slave are identical with the set-up values.

All detected AS-Interface slaves (apart from AS-Interface slave "0") are activated in set-up mode. This also applies to AS-Interface slaves where there are differences in the required and actual configurations.

The "OPERATING MODE" bit is stored in non-volatile memory, i.e. it is retained even on start-up/restarting.

When changing from set-up mode to protected mode, the AS-Interface master restarts (transition to offline phase and subsequent switching to online mode).

Note If an AS-Interface slave with the operating address 0 is entered in the LDS, it is not possible for the AS-Interface master module to switch from set-up mode to protected mode.

Request

Byte 27 26 25 24 23 22 21 20

2 T - -

3 Operating mode

0 Protected mode Operating mode

1 Set-up mode

0x0C

Byte 27 26 25 24 23 22 21 20

2 T Result

WAGO-I/O-SYSTEM 750 I/O Modules

Response

0x0C

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Set offline mode (SET_OFFLINE, 0x0A)

This call switches between online and offline mode.

Online mode represents the normal mode of operation of the AS-Interface master. In this case, the following orders are processed cyclically:

• In the so-called data exchange phase, the output data fields for all AS-

Interface slaves of the LAS are transferred to the slave outputs. If the transfer is free from errors, the addressed AS-Interface slaves pass the values of the slave inputs to the master.

• This is followed by the acquisition phase, in which a search is carried out

for existing AS-Interface slaves and newly added AS-Interface slaves are incorporated into the LDS or LAS.

• Orders, which have been passed through by the user, such as the writing of

parameters for example, are executed in the management phase.

In offline mode, the AS-Interface master module only processes orders from the user. (Orders, which instigate an immediate addressing of an AS-Interface slave, are rejected with an error). There is no cyclical exchange of data with the AS-Interface slave.

The AS-Interface circuit is in a safe state when offline.

The bit OFFLINE = TRUE is not permanently stored, i.e. the AS-Interface master module will be in online mode once more on start-up/following a restart.

Request

Byte 27 26 25 24 23 22 21 20

2 T - -

3 Offline

0 The master is leaving the offline phase Offline

not equal to 0

The master is changing to the offline phase

0x0A

Response

Byte 27 26 25 24 23 22 21 20

2 T Result

0x0A

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Appendix • 95 Mailbox command - Reference

SET_DATA_EX(SET_DATA_EX, 0x48)

The exchange of data between AS-Interface master and AS-Interface slaves is enabled with this call.

Request

Byte 27 26 25 24 23 22 21 20

2 T - -

3 Data_Exchange_Active

0 Data exchange not enabled Data_Exchange_

Active

1 Data exchange enabled

0x48

Response

Byte 27 26 25 24 23 22 21 20

2 T Result

0x48

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Change AS-Interface slave address (SLAVE_ADDR, 0x0D)

SLAVE_ADDR: Change_Slave_Address

The address of an AS-Interface slave can be changed with this call.

This call is mainly used to add a new AS-Interface slave with the default address "0" to the AS-Interface. In this case, a change of address is carried out from "Old AS-Interface slave address" = 0 to "New AS-Interface slave address".

The change only takes place when the following conditions are fulfilled:

1. An AS-Interface slave with "Old AS-Interface slave address" is present.

2. If the old AS-Interface slave address is not equal to 0, then an AS-Interface

slave with the address "0" must not be connected at the same time.

3. The "New AS-Interface slave address" must be valid.

4. An AS-Interface slave with "New AS-Interface slave address" must not be

present.

Note When changing the AS-Interface slave address, the AS-Interface slave is not reset, i.e. the output data for the AS-Interface slave are retained until new data arrive on the new address.

Request

Byte 27 26 25 24 23 22 21 20

2 T - -

3 - B Source address

4 - B Target address

0 Standard AS-Interface slave or AS-Interface slave with extended addressing mode

in address range A

1 AS-Interface slave with extended addressing mode in address range B

0x0D

Response

Byte 27 26 25 24 23 22 21 20

2 T Result

0x0D

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Appendix • 97 Mailbox command - Reference

Set automatic addressing (SET_AAE, 0x0B)

The "Automatic addressing" function can be enabled or inhibited with this call.

The AUTO_ADDR_ENABLE bit is stored in non-volatile memory, i.e. it is retained even on start-up/restarting of the AS-Interface master.

Request

Byte 27 26 25 24 23 22 21 20

2 T - -

3 Auto_Address_Enable

0 Automatic addressing not enabled Auto_Address_E

nable

1 Automatic addressing enabled

0x0B

Response

Byte 27 26 25 24 23 22 21 20

2 T Result

0x0B

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Execute_Command (EXEC_CMD, 0x49)

Request

Byte 27 26 25 24 23 22 21 20

2 T -

3 Slave address

4 Command

0x49

Response

Byte 27 26 25 24 23 22 21 20

2 T Result

3 Response data

0x49

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Appendix • 99 Mailbox command - Reference

Read peripheral error list (GET_LPF_A/B, 0x3E)

The list of peripheral errors (LPF) signalled by the AS-Interface slaves is read from the AS-Interface master with this call. The LPF is cyclically updated by the AS-Interface master. It can be seen from the description of the ASInterface slave if and when an AS-Interface slave signals errors from the connected peripheral (e.g. wire break).

Note:

In order to transmit the data for all slaves with a 6-byte mailbox, the command must be called once with A/B = 0 and once with A/B = 1.

Request

Byte 27 26 25 24 23 22 21 20

2 T 0 A/B -

0x3E

Response (for A/B = 0)

Byte 27 26 25 24 23 22 21 20

2 T Result

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

… …

6 31A 30A 29A 28A 27A 26A 25A 24A

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

… …

10 31B 30B 29B 28B 27B 26B 25B 24B

0x3E

WAGO-I/O-SYSTEM 750 I/O Modules

Page 100

100 • Appendix

Mailbox command - Reference

Response (for A/B = 1)

Byte 27 26 25 24 23 22 21 20

2 T Result

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

… …

6 31B 30B 29B 28B 27B 26B 25B 24B

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

… …

10 31A 30A 29A 28A 27A 26A 25A 24A

0x3E

WAGO-I/O-SYSTEM 750 I/O Modules