WAGO MODBUS RTU Programmable Fieldbus Controller Manual

Manual

WAGO-I/O-SYSTEM 750

Programmable Fieldbus Controller

750-815/300-000

RS-485; 150 Baud … 115.2 kBaud; digital and analog signals

Version 1.0.0

2 WAGO-I/O-SYSTEM 750

750-815/300-000 Programmable Fieldbus Controller

© 2014 by WAGO Kontakttechnik GmbH & Co. KG

All rights reserved.

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: [email protected]

Web: http://www.wago.com

Technical Support

Phone: +49 (0) 571/8 87 – 5 55

Fax: +49 (0) 571/8 87 – 85 55


Every conceivable measure has been taken to ensure the accuracy and completeness of this documentation. However, as errors can never be fully excluded, we always appreciate any information or suggestions for improving the documentation.


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 protected by trademark or patent.

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Table of Contents 3

Table of Contents

1 Notes about this Documentation ................................................................. 7

1.1

1.2

1.3

1.4

1.5

Validity of this Documentation ................................................................. 7

Copyright ................................................................................................... 8

Symbols ..................................................................................................... 9

Number Notation ..................................................................................... 11

Font Conventions .................................................................................... 11

2 Important Notes ......................................................................................... 12

2.1

2.1.1

2.1.2

2.1.3

Legal Bases ............................................................................................. 12

Subject to Changes ............................................................................. 12

Personnel Qualifications ..................................................................... 12

2.1.4

2.2

Use of the WAGO-I/O-SYSTEM 750 in Compliance with Underlying

Provisions ........................................................................................... 12

Technical Condition of Specified Devices ......................................... 13

Safety Advice (Precautions) .................................................................... 14

3 System Description..................................................................................... 16

3.1

3.2

3.3

3.4

3.5

3.5.1

3.5.2

3.5.2.1

3.5.2.2

3.5.3

3.5.3.1

3.5.3.2

3.5.4

3.5.5

3.5.6

3.6

3.6.1

3.6.1.1

3.6.1.2

3.6.2

3.7

3.7.1

3.7.2

3.7.3

3.7.4

Manufacturing Number ........................................................................... 17

Component Update .................................................................................. 18

Storage, Assembly and Transport ........................................................... 18

Assembly Guidelines/Standards .............................................................. 19

Power Supply .......................................................................................... 20

Isolation .............................................................................................. 20

System Supply .................................................................................... 21

Connection ..................................................................................... 21

Dimensioning ................................................................................. 22

Field Supply........................................................................................ 25

Connection ..................................................................................... 25

Fusing ............................................................................................ 27

Supplementary Power Supply Regulations ........................................ 30

Supply Example.................................................................................. 31

Power Supply Unit ............................................................................. 33

Grounding ............................................................................................... 34

Grounding the DIN Rail ..................................................................... 34

Framework Assembly .................................................................... 34

Insulated Assembly ........................................................................ 34

Grounding Function............................................................................ 35

Shielding ................................................................................................. 36

General ............................................................................................... 36

Bus Cables .......................................................................................... 36

Signal Lines ........................................................................................ 36

WAGO Shield Connecting System .................................................... 37

4 Device Description ..................................................................................... 38

4.1

4.2

4.2.1

4.2.2

View ........................................................................................................ 39

Connectors ............................................................................................... 41

Device Supply .................................................................................... 41

Fieldbus Connection ........................................................................... 42

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4.5.4

4.5.5

4.5.6

4.5.7

4.5.8

4.6

4.7

4.3

4.4

4.4.1

4.4.2

4.4.3.1

4.4.4

4.5

4.5.3

Display Elements .................................................................................... 43

Operating Elements ................................................................................. 44

Service Interface ................................................................................. 44

Mode Selector Switch......................................................................... 45

Manual Configuration .................................................................... 51

RS-485 Switches ................................................................................ 54

Technical Data ........................................................................................ 55

Supply ................................................................................................. 55

Fieldbus MODBUS RTU ................................................................... 56

Accessories ......................................................................................... 56

Connection Type ................................................................................ 56

Climatic Environmental Conditions ................................................... 57

Mechanical Strength acc. to IEC 61131-2 .......................................... 57

Approvals ................................................................................................ 58

Standards and Guidelines ........................................................................ 60

5 Mounting ..................................................................................................... 61

5.1

5.2

5.3

5.3.1

5.3.2

5.4

5.5

5.6

5.6.1

5.6.2

5.6.3

5.6.4

Installation Position ................................................................................. 61

Overall Configuration ............................................................................. 61

Mounting onto Carrier Rail ..................................................................... 63

Carrier Rail Properties ........................................................................ 63

WAGO DIN Rail ................................................................................ 64

Spacing .................................................................................................... 64

Mounting Sequence ................................................................................. 65

Inserting and Removing Devices ............................................................ 66

Inserting the Fieldbus Coupler/Controller .......................................... 67

Removing the Fieldbus Coupler/Controller ....................................... 67

Inserting the I/O Module .................................................................... 68

Removing the I/O Module .................................................................. 69

6 Connect Devices ......................................................................................... 70

6.1

6.2

6.3

Data Contacts/Internal Bus ..................................................................... 70

Power Contacts/Field Supply .................................................................. 71

Connecting a Conductor to the CAGE CLAMP

®

................................... 72

7 Function Description ................................................................................. 73

7.1

7.1.1

7.1.2

7.2

7.2.1

7.2.2

7.2.3

7.2.4

7.3

7.3.1

7.3.2

7.3.2.1

7.3.2.2

7.3.2.3

7.3.3

Operating System .................................................................................... 73

Run-up ................................................................................................ 73

PFC Cycle ........................................................................................... 73

Process Data Architecture ....................................................................... 75

Basic Structure.................................................................................... 75

Example of an Input Process Image ................................................... 77

Example of an Output Process Image ................................................ 78

Process Data MODBUS RTU ............................................................ 79

Data Exchange ........................................................................................ 80

Memory Areas .................................................................................... 81

Addressing .......................................................................................... 84

Addressing of I/O Modules ........................................................... 85

IEC-61131-3 Address Areas .......................................................... 86

Absolute Addressing ...................................................................... 86

Data Exchange Between MODBUS/RTU Master and I/O Modules . 88

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7.3.4

7.3.5

7.3.5.1

7.3.6

7.3.7

Data Exchange Between PLC Function (CPU) and I/O Modules ...... 89

Data Exchange Between MODBUS RTU Master and the PLC

Function (CPU) .................................................................................. 90

Example of MODBUS RTU Master and PLC Functionality (CPU91

Common Access by PFC and MODBUS RTU Master to Outputs .... 92

Application Example .......................................................................... 93

8 Commissioning ........................................................................................... 94

9 Programming the PFC using WAGO-I/O-PRO ...................................... 95

9.1

9.2

9.3

9.3.1

9.3.2

Configuring the Fieldbus Controller using the I/O Configurator ............ 97

MODBUS Libraries for WAGO-I/OPRO ............................................. 99

Transfer the IEC program to the controller ........................................... 100

Transfer via Serial Service Port ........................................................ 101

Transferring the Application via MODBUS RTU ........................... 103

10 Diagnostics ................................................................................................ 105

10.1

LED Signaling ....................................................................................... 105

10.1.1

10.1.2

10.1.3

Evaluating Fieldbus Status ............................................................... 106

10.2

Error Response ...................................................................................... 115

10.2.1

10.2.2

Evaluating Node Status – I/O LED (Blink Code Table) .................. 107

Evaluating Power Supply Status ...................................................... 114

Fieldbus Failure ................................................................................ 115

Internal Data Bus Failure.................................................................. 116

11 Fieldbus Communication ........................................................................ 117

11.1

MODBUS-Functions ............................................................................. 117

11.1.1

11.1.3

11.1.3.8

11.1.4

11.1.5

11.1.5.1

11.1.5.2

11.1.5.3

11.1.5.4

11.1.5.5

11.1.5.6

General ............................................................................................. 117

Description of the MODBUS Functions .......................................... 120

Function Code FC23 (Read/Write Multiple Registers) ............... 129

MODBUS Register Mapping ........................................................... 130

MODBUS Registers ......................................................................... 132

Accessing Register Values .......................................................... 133

Watchdog Registers ..................................................................... 133

Diagnostic Registers .................................................................... 137

Configuration Registers ............................................................... 138

Firmware Information Registers .................................................. 140

Constant Registers ....................................................................... 141

12 I/O Modules .............................................................................................. 143

12.1

Overview ............................................................................................... 143

12.2.5

12.2.6

12.2.6.1

Specialty Modules ............................................................................ 154

System Modules ............................................................................... 180

Binary Space Module .................................................................. 180

13 Use in Hazardous Environments ............................................................ 181

13.1

Marking Configuration Examples ......................................................... 182

13.1.1

13.1.2

13.2

Installation Regulations ......................................................................... 186

13.2.1

Marking for Europe According to ATEX and IEC-Ex .................... 182

Marking for America According to NEC 500 .................................. 185

Special Conditions for Safe Operation of the ATEX and IEC Ex (acc.

DEMKO 08 ATEX 142851X and IECEx PTB 07.0064) ................. 187

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13.2.2

13.2.3

13.2.4

Special conditions for safe use (ATEX Certificate TÜV 07 ATEX

554086 X) ......................................................................................... 188

Special conditions for safe use (IEC-Ex Certificate TUN 09.0001 X)190

ANSI/ISA 12.12.01 .......................................................................... 192

List of Figures .................................................................................................... 195

List of Tables ...................................................................................................... 197

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1

Notes about this Documentation

Notes about this Documentation

Always retain this documentation!

This documentation is part of the product. Therefore, retain the documentation during the entire service life of the product. Pass on the documentation to any subsequent user. In addition, ensure that any supplement to this documentation is included, if necessary.

7

1.1 Validity of this Documentation

This documentation is only applicable to the “Programmable Fieldbus Controller”

(750-815/300-000) and the variants listed in the table below.

Table 1: Variations

Oder number/

Variation

Designation


750-815/300-

000/325-000

Programmable Fieldbus Controller/T (Extended operating temperature range: -20 °C ... +60 °C)

Documentation Validity for Variants

Unless otherwise indicated, the information given in this documentation applies to listed variants.

The product “Programmable Fieldbus Controller” (750-815/300-000) shall only be installed and operated according to the instructions in this manual and the system description for the WAGO-I/O-SYSTEM 750.

Consider power layout of the WAGO-I/O-SYSTEM 750!

In addition to these operating instructions, you will also need the system description for the WAGO-I/O-SYSTEM 750, which can be downloaded at www.wago.com

. There, you can obtain important information including information on electrical isolation, system power and supply specifications.

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1.2 Copyright

WAGO-I/O-SYSTEM 750


This Manual, including all figures and illustrations, is copyright-protected. Any further use of this Manual by third parties that violate pertinent copyright provisions is prohibited. Reproduction, translation, electronic and phototechnical filing/archiving (e.g., photocopying) as well as any amendments require the written consent of WAGO Kontakttechnik GmbH & Co. KG, Minden, Germany.

Non-observance will involve the right to assert damage claims.

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1.3 Symbols

Notes about this Documentation 9

Personal Injury!

Indicates a high-risk, imminently hazardous situation which, if not avoided, will result in death or serious injury.

Personal Injury Caused by Electric Current!

Indicates a high-risk, imminently hazardous situation which, if not avoided, will result in death or serious injury.


Indicates a moderate-risk, potentially hazardous situation which, if not avoided, could result in death or serious injury.


Indicates a low-risk, potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

Damage to Property!

Indicates a potentially hazardous situation which, if not avoided, may result in damage to property.

Damage to Property Caused by Electrostatic Discharge (ESD)!

Indicates a potentially hazardous situation which, if not avoided, may result in damage to property.

Important Note!

Indicates a potential malfunction which, if not avoided, however, will not result in damage to property.

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Additional Information:

Refers to additional information which is not an integral part of this documentation (e.g., the Internet).

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1.4 Number Notation

Table 2: Number Notation

Number code Example

Decimal 100

Hexadecimal

Binary

0x64

'100'

'0110.0100'

Notes about this Documentation 11

Note

Normal notation

C notation

In quotation marks, nibble separated with dots (.)

1.5 Font Conventions

Table 3: Font Conventions

Font type Indicates italic Names of paths and data files are marked in italic-type. e.g.: C:\Programme\WAGO-I/O-CHECK

Menu Menu items are marked in bold letters. e.g.: Save

>

Input

A greater-than sign between two names means the selection of a menu item from a menu. e.g.: File > New

Designation of input or optional fields are marked in bold letters, e.g.: Start of measurement range

“Value” Input or selective values are marked in inverted commas. e.g.: Enter the value “4 mA” under Start of measurement range .

[Button] Pushbuttons in dialog boxes are marked with bold letters in square brackets. e.g.: [Input]

[Key] Keys are marked with bold letters in square brackets. e.g.: [F5]

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2 Important Notes

WAGO-I/O-SYSTEM 750


This section includes an overall summary of the most important safety requirements and notes that are mentioned in each individual section. To protect your health and prevent damage to devices as well, it is imperative to read and carefully follow the safety guidelines.

2.1 Legal Bases

2.1.1 Subject to Changes

WAGO Kontakttechnik GmbH & Co. KG reserves the right to provide for any alterations or modifications that serve to increase the efficiency of technical progress. WAGO Kontakttechnik GmbH & Co. KG owns all rights arising from the granting of patents or from the legal protection of utility patents. Third-party products are always mentioned without any reference to patent rights. Thus, the existence of such rights cannot be excluded.

2.1.2 Personnel Qualifications

All sequences implemented on WAGO-I/O-SYSTEM 750 devices may only be carried out by electrical specialists with sufficient knowledge in automation. The specialists must be familiar with the current norms and guidelines for the devices and automated environments.

All changes to the coupler or controller should always be carried out by qualified personnel with sufficient skills in PLC programming.

2.1.3 Use of the WAGO-I/O-SYSTEM 750 in Compliance with

Underlying Provisions

Fieldbus couplers, fieldbus controllers and I/O modules found in the modular

WAGO-I/O-SYSTEM 750 receive digital and analog signals from sensors and transmit them to actuators or higher-level control systems. Using programmable controllers, the signals can also be (pre-) processed.

The devices have been developed for use in an environment that meets the IP20 protection class criteria. Protection against finger injury and solid impurities up to

12.5 mm diameter is assured; protection against water damage is not ensured.

Unless otherwise specified, operation of the devices in wet and dusty environments is prohibited.

Operating the WAGO-I/O-SYSTEM 750 devices in home applications without further measures is only permitted if they meet the emission limits (emissions of interference) according to EN 61000-6-3. You will find the relevant information in the section “Device Description” > “Standards and Guidelines” in the manual for the used fieldbus coupler/controller.

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Important Notes 13

Appropriate housing (per 94/9/EG) is required when operating the WAGO-I/O-

SYSTEM 750 in hazardous environments. Please note that a prototype test certificate must be obtained that confirms the correct installation of the system in a housing or switch cabinet.

2.1.4 Technical Condition of Specified Devices

The devices to be supplied ex works are equipped with hardware and software configurations, which meet the individual application requirements. WAGO

Kontakttechnik GmbH & Co. KG will be exempted from any liability in case of changes in hardware or software as well as to non-compliant usage of devices.

Please send your request for modified and new hardware or software configurations directly to WAGO Kontakttechnik GmbH & Co. KG.

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2.2 Safety Advice (Precautions)

For installing and operating purposes of the relevant device to your system the following safety precautions shall be observed:

Do not work on devices while energized!

All power sources to the device shall be switched off prior to performing any installation, repair or maintenance work.

Install the device only in appropriate housings, cabinets or in electrical operation rooms!

The WAGO-I/O-SYSTEM 750 and its components are an open system. As such, install the system and its components exclusively in appropriate housings, cabinets or in electrical operation rooms. Allow access to such equipment and fixtures to authorized, qualified staff only by means of specific keys or tools.

Replace defective or damaged devices!

Replace defective or damaged device/module (e.g., in the event of deformed contacts), since the long-term functionality of device/module involved can no longer be ensured.

Protect the components against materials having seeping and insulating properties!

The components are not resistant to materials having seeping and insulating properties such as: aerosols, silicones and triglycerides (found in some hand creams). If you cannot exclude that such materials will appear in the component environment, then install the components in an enclosure being resistant to the above-mentioned materials. Clean tools and materials are imperative for handling devices/modules.

Clean only with permitted materials!

Clean soiled contacts using oil-free compressed air or with ethyl alcohol and leather cloths.

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Important Notes 15

Do not use any contact spray!

Do not use any contact spray. The spray may impair contact area functionality in connection with contamination.

Do not reverse the polarity of connection lines!

Avoid reverse polarity of data and power supply lines, as this may damage the devices involved.

Avoid electrostatic discharge!

The devices are equipped with electronic components that may be destroyed by electrostatic discharge when touched. Please observe the safety precautions against electrostatic discharge per DIN EN 61340-5-1/-3. When handling the devices, please ensure that environmental factors (personnel, work space and packaging) are properly grounded.

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16 System Description

3 System Description

WAGO-I/O-SYSTEM 750


The WAGO-I/O-SYSTEM 750 is a modular, fieldbus-independent input/output system (I/O system). The configuration described here consists of a fieldbus coupler/controller (1) and the modular I/O modules (2) for any signal shapes that form the fieldbus node together. The end module (3) completes the node and is required for correct operation of the fieldbus node.

Figure 1: Fieldbus Node (Example)

Fieldbus couplers/controllers are available for different fieldbus systems.

The standard fieldbus couplers/controllers and extended ECO fieldbus couplers contain the fieldbus interface, electronics and a power supply terminal. The fieldbus interface forms the physical interface to the relevant fieldbus. The electronics process the data of the I/O modules and make it available for the fieldbus communication. The 24 V system supply and the 24 V field supply are fed in via the integrated power supply terminal.

The fieldbus coupler/controller exchanges process data with the respective control via the respective fieldbus. The programmable fieldbus controllers (PFC) allow implementation of additional PLC functions. WAGO-I/O-PRO is used to program the fieldbus controllers according to IEC 61131-3.

I/O modules for diverse digital and analog I/O signals as well as special functions can be connected to the fieldbus coupler/controller. The communication between the fieldbus coupler/controller and the I/O modules is carried out via an internal bus.

The components of the WAGO-I/O-SYSTEM 750 have clear termination points, light emitting diodes for status display, plug-in mini WSB tags and group marker cards for labeling.

The 1, 2 or 3 wire technology supplemented by a ground wire connection allows for direct sensor or actuator wiring.

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System Description 17

3.1 Manufacturing Number

The serial number indicates the delivery status directly after production. This number is part of the labeling on the side of each component.

In addition, the serial number is printed on the cover cap of the configuration and programming interface of the fieldbus coupler/controller, so that it can also be read when installed.

Figure 2: Labeling on the Side of a Component (Example)

Manufacturing number

01 03 01 02 03 - B060606

Calendar week

Year Software version

Hardware version

Firmware Internal loader number version

Figure 3: Example of a Manufacturing Number

The manufacturing number consists of the production week and year, the software version (if available), the hardware version of the component, the firmware loader

(if available) and further internal information for WAGO Kontakttechnik GmbH

& Co. KG.

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3.2 Component Update

For the case of an update of one component, the lateral marking on each component contains a prepared matrix.

This matrix makes columns available for altogether three updates to the entry of the current update data, like production order number (NO; starting from calendar week 13/2004), date stamp (DS), software version (SW), hardware version (HW) and the firmware loader version (FWL, if available).

Current version data for

Production order no. NO

1. Update 2. Update 3. Update

 only starting from

Date stamp

Software version

DS

SW

calendar week 13/2004

Hardware version

Firmware loader vers.

HW

FWL

 only for fieldbus

couplers/controllers

If the update of a component took place, the current version data are registered into the columns of the matrix.

Additionally with the update of a fieldbus coupler or controller also the cover of the configuration and programming interface of the fieldbus coupler or controller is imprinted with the current production order number.

The original manufacturing information on the device's housing remains unchanged.

3.3 Storage, Assembly and Transport

Whenever possible, the components are to be stored in their original packaging.

Likewise, the original packaging provides optimal protection during transport.

When assembling or repacking the components, the contacts must not be soiled or damaged. The components must be stored and transported in appropriate containers/packaging. Thereby, the ESD information is to be regarded.

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3.4 Assembly Guidelines/Standards

DIN 60204 Electrical equipping of machines

DIN EN 50178 Equipping of high-voltage systems with electronic components

(replacement for VDE 0160)

EN 60439 Low voltage switchgear assemblies

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20 System Description

3.5 Power Supply

WAGO-I/O-SYSTEM 750


3.5.1 Isolation

Within the fieldbus node, there are three electrically isolated potentials:

• Electrically isolated fieldbus interface via transformer

• Electronics of the fieldbus couplers/controllers and the I/O modules

(internal bus)

• All I/O modules have an electrical isolation between the electronics

(internal bus, logic) and the field electronics. Some digital and analog input modules have each channel electrically isolated, please see catalog.

Figure 4: Isolation for Fieldbus Couplers/Controllers (Example)

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3.5.2 System Supply


3.5.2.1 Connection

The WAGO-I/O-SYSTEM 750 requires a 24 V direct current system supply.

The power supply is provided via the fieldbus coupler/controller and, if necessary, in addition via internal system supply modules 750-613. The power supply is reverse voltage protected.

Do not use an incorrect voltage/frequency!

The use of an incorrect supply voltage or frequency can cause severe damage to the components.

Figure 5: System Supply via Fieldbus Coupler/Controller (left) and via Internal System Supply

Module (right)

Table 4: Legend for Figure “System Supply via Fieldbus Coupler/Controller (left) and via Internal

System Supply Module (right)”

Position Description

1 System supply DC 24 V (-25 % … +30 %)

2 System supply 0 V

The fed DC 24 V supplies all internal system components, e.g. fieldbus coupler/controller electronics, fieldbus interface and I/O modules via the internal bus (5 V system voltage). The 5 V system voltage is galvanically connected to the

24 V system supply.

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Figure 6: System Voltage for Standard Couplers/Controllers and Extended ECO Couplers

Only reset the system simultaneously for all supply modules!

Reset the system by simultaneously switching the system supply at all supply modules (fieldbus coupler/controller and potential supply module with bus power supply) off and on again.

3.5.2.2 Dimensioning

Recommendation

A stable power supply cannot always be assumed. Therefore, you should use regulated power supplies to ensure the quality of the supply voltage.

The supply capacity of the fieldbus coupler/controller or the internal system supply module can be taken from the technical data of the components.

Table 5: Alignment

Internal current consumption

*)

Current consumption via system voltage (5 V for electronics of I/O modules and fieldbus coupler/controller).

Total current for I/O modules

*)

Available current for the I/O modules. Provided by the bus power supply unit. See fieldbus coupler/controller and internal system supply module

*)

See current catalog, manuals, Internet

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Example:


Calculating the current consumption on the fieldbus coupler:

Internal current consumption of the coupler

Total current for I/O modules

Sum I

(5 V) total

350 mA at 5 V

1650 mA at 5 V

2000 mA at 5 V

The internal current consumption is indicated in the technical data for each bus terminal. In order to determine the total requirement, add together the values of all

I/O modules in the node.

Please note the aggregate current for I/O modules. It may be necessary to supply potential!

When the sum of the internal current consumption for the I/O modules exceeds their aggregate current, you must use a supply module with bus power supply.

Install it before the position where the permissible aggregate current would be exceeded.

Example:

Calculating the total current on a standard fieldbus coupler/controller:

A node configuration with 20 relay modules (750-517) and 30 digital input modules (750-405) should be attached to a fieldbus coupler/controller:

Internal current consumptions 20 × 90 mA = 1800 mA at 5 V

+ 30 × 2 mA = 60 mA at 5 V

Sum of internal current consumptions 1860 mA at 5 V

However, the fieldbus coupler can only provide 1650 mA for the I/O modules.

Consequently, an internal system supply module (750-613), e. g. in the middle of the node, should be added.

Recommendation

Utilize the smartDESIGNER feature WAGO ProServe

® software to configure fieldbus node assembly. You can test the configuration via the integrated plausibility check.

The maximum input current of the 24 V system supply is 500 mA. The exact electrical consumption (I

(V)

) can be determined with the following formulas:

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Fieldbus coupler or controller

I

(5 V) total

= Sum of all the internal current consumption of the connected

I/O modules + internal current consumption of the fieldbus coupler/controller

Internal system supply module

I

(5 V) total

= Sum of all the internal current consumption of the connected

I/O modules at internal system supply module

Input current I

(24 V)

=

5 V

24 V

×

I

(5 V) total

η

η = 0.87

(87 % Efficiency of the power supply at nominal load 24 V)

Activate all outputs when testing the current consumption!

If the electrical consumption of a power supply point for the 24 V system supply exceeds 500 mA, then the cause may be an improperly dimensioned node or a defect.

During the test, you must activate all outputs.

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3.5.3 Field Supply


3.5.3.1 Connection

Sensors and actuators can be directly connected to the relevant channel of the I/O module in 1, 2, 3 or 4 conductor connection technology. The I/O module supplies power to the sensors and actuators. The input and output drivers of some I/O modules require the field side supply voltage.

The fieldbus coupler/controller provides field side power (DC 24 V). In this case it is a passive power supply without protection equipment.

Power supply modules with or without fuse holder and diagnostic capability are available for the power supply of other field potentials (DC 24 V, AC/DC 0 …

230 V, AC 120 V, AC 230 V). The power supply modules can also be used to set up various potential groups. The connections are connected in pairs to a power contact.

Figure 7: Field Supply for Standard Couplers/Controllers and Extended ECO Couplers

Table 6: Legend for Figure “Field Supply for Standard Couplers/Controllers and Extended ECO

Couplers”

Field supply

1 24 V (-15 % / +20 %)

2 0 V

3 Optional ground potential

Power jumper contacts

4 Potential distribution to adjacent I/O modules

The field-side power supply is automatically derived from the power jumper contacts when snapping an I/O module.

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The current load of the power contacts must not exceed 10 A on a continual basis.

By inserting an additional power supply module, the field supply via the power contacts is disrupted. From there a new power supply occurs which may also contain a new voltage potential.

Re-establish the ground connection when the connection to the power jumper contacts is disrupted!

Some I/O modules have no or very few power contacts (depending on the I/O function). Due to this, the passing through of the relevant potential is disrupted. If you require a field supply via power jumper contacts for subsequent I/O modules, then you have to use a power supply module.

Note the data sheets of the I/O modules.

Use a spacer module when setting up a node with different potentials!

In the case of a node setup with different potentials, e.g. the alteration from

DC 24 V to AC 230 V, you should use a spacer module. The optical separation of the potentials acts as a warning to heed caution in the case of wiring and maintenance works. Thus, you can prevent the results of wiring errors.

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3.5.3.2 Fusing

Internal fusing of the field supply is possible for various field voltages via an appropriate power supply module.

Table 7: Power Supply Modules

Order No. Field Voltage

750-601

750-609

750-615

750-617

24 V DC, Supply/Fuse

230 V AC, Supply/Fuse



750-610

750-611

24 V DC, Supply/Fuse/Diagnosis

230 V AC, Supply/Fuse/Diagnosis

750-606 Supply Module 24 V DC, 1,0 A, Ex i

750-625/000-001 Supply Module 24 V DC, 1,0 A, Ex i (without diagnostics)

Figure 8: Supply Module with Fuse Carrier (Example 750-610)

Observe the maximum power dissipation and, if required, UL requirements!

In the case of power supply modules with fuse holders, you must only use fuses with a maximum dissipation of 1.6 W (IEC 127).

For UL approved systems only use UL approved fuses.

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In order to insert or change a fuse, or to switch off the voltage in succeeding I/O modules, the fuse holder may be pulled out. In order to do this, use a screwdriver for example, to reach into one of the slits (one on both sides) and pull out the holder.

Figure 9: Removing the Fuse Carrier

Lifting the cover to the side opens the fuse carrier.

Figure 10: Opening the Fuse Carrier

Figure 11: Changing the Fuse

After changing the fuse, the fuse carrier is pushed back into its original position.

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Alternatively, fusing can be done externally. The fuse modules of the WAGO series 281 and 282 are suitable for this purpose.

Figure 12: Fuse Modules for Automotive Fuses, Series 282

Figure 13: Fuse Modules for Automotive Fuses, Series 2006

Figure 14: Fuse Modules with Pivotable Fuse Carrier, Series 281

Figure 15: Fuse Modules with Pivotable Fuse Carrier, Series 2002

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3.5.4 Supplementary Power Supply Regulations

The WAGO-I/O-SYSTEM 750 can also be used in shipbuilding or offshore and onshore areas of work (e. g. working platforms, loading plants). This is demonstrated by complying with the standards of influential classification companies such as Germanischer Lloyd and Lloyds Register.

Filter modules for 24 V supply are required for the certified operation of the system.

Table 8: Filter Modules for 24 V Supply

Order No. Name Description

750-626 Supply Filter Filter module for system supply and field supply

(24 V, 0 V), i. e. for fieldbus coupler/controller and bus power supply (750-613)

750-624 Supply Filter Filter module for the 24 V field supply

(750-602, 750-601, 750-610)

Therefore, the following power supply concept must be absolutely complied with.

Figure 16: Power Supply Concept

Use a supply module for equipotential bonding!

Use an additional 750-601/ 602/ 610 Supply Module behind the 750-626 Filter

Module if you want to use the lower power jumper contact for equipotential bonding, e.g., between shielded connections and require an additional tap for this potential.

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3.5.5 Supply Example

Suppl Sggggggggggggggggg

The system supply and the field supply shall be separated!

You should separate the system supply and the field supply in order to ensure bus operation in the event of a short-circuit on the actuator side.

Figure 17: Supply Example for Standard Couplers/Controllers

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Table 9: Legend for Figure “Supply Example for Fieldbus Coupler/Controller”

Pos. Description

1 Power Supply on coupler via external Supply Module

2 Power Supply with optional ground

3 Internal System Supply Module

4 Separation module recommended

5 Supply Module passive

6 Supply Module with fuse carrier/diagnostics

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3.5.6 Power Supply Unit

The WAGO-I/O-SYSTEM 750 requires a 24 VDC voltage (system supply).

Recommendation

A stable power supply cannot always be assumed everywhere. Therefore, you should use regulated power supplies to ensure the quality of the supply voltage

(see also table “WAGO power supply units”).

For brief voltage dips, a buffer (200 µF per 1 A load current) must be provided.

Power failure time not acc. IEC 61131-2!

Note that the power failure time of 10 ms acc. IEC 61131-2 is not maintained in a maximum configuration.

The power demand must be determined individually depending on the entry point of the field supply. All loads through field devices and I/O modules must be taken into account. The field supply also impacts the I/O modules because the input and output drivers of some I/O modules require the voltage of the field supply.

System and field supply must be isolated!

The system supply and field supply must be isolated to ensure bus operation in the event of short circuits on the actuator side.

Table 10: WAGO Power Supply Units (Selection)

Description WAGO Power

Supply Unit

787-612

787-622

Primary switched mode;

DC 24 V; 2,5 A Input nominal voltage AC 230 V


DC 24 V; 5 A Input nominal voltage AC 230 V

787-632

288-809

288-810

288-812

288-813


DC 24 V; 10 A Input nominal voltage AC 230/115 V

Rail-mounted modules with universal mounting carrier

AC 115 V/DC 24 V; 0,5 A

AC 230 V/DC 24 V; 0,5 A

AC 230 V/DC 24 V; 2 A

AC 115 V/DC 24 V; 2 A

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3.6 Grounding

3.6.1 Grounding the DIN Rail

3.6.1.1 Framework Assembly

When setting up the framework, the carrier rail must be screwed together with the electrically conducting cabinet or housing frame. The framework or the housing must be grounded. The electrical connection is established via the screw. Thus, the carrier rail is grounded.

Ensure sufficient grounding is provided!

You must take care to ensure the flawless electrical connection between the carrier rail and the frame or housing in order to guarantee sufficient grounding.

3.6.1.2 Insulated Assembly

Insulated assembly has been achieved when there is constructively no direct ohmic contact between the cabinet frame or machine parts and the carrier rail.

Here, the earth ground must be set up via an electrical conductor in accordance with valid national safety regulations.

Recommendation

The optimal setup is a metallic assembly plate with grounding connection which is electrically conductive linked to the carrier rail.

The separate grounding of the carrier rail can be easily set up with the aid of the

WAGO ground wire terminals.

Table 11: WAGO Ground Wire Terminals

Order No. Description

283-609 1-conductor ground (earth) terminal block make an automatic contact to the carrier rail; conductor cross section: 0.2 mm² … 16 mm

2

Note : Also order the end and intermediate plate (283-320).

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3.6.2 Grounding Function


The grounding function increases the resistance against electro-magnetic interferences. Some components in the I/O system have a carrier rail contact that dissipates electro-magnetic interferences to the carrier rail.

Figure 18: Carrier Rail Contact (Example)

Ensure sufficient grounding is provided!

You must take care to ensure the direct electrical connection between the carrier rail contact and the carrier rail.

The carrier rail must be grounded.

For information on carrier rail properties, see section “Mounting” > … > “Carrier

Rail Properties”.

The bottom CAGE CLAMP

® connectors of the supply modules enable optional connection of a field-side functional ground. This potential is made available to the I/O module arranged on the right through the spring-loaded contact of the three power contacts. Some I/O modules are equipped with a knife-edge contact that taps this potential. This forms a potential group with regard to functional ground with the I/O module arranged on the left.

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3.7 Shielding

3.7.1 General

Use of shielded cables reduces electromagnetic interference and thus increases signal quality. Measurement errors, data transmission errors and interference due to excessive voltage can be prevented.

Connect the cable shield to the ground potential!

Integrated shielding is mandatory to meet the technical specifications in regards to measuring accuracy. Connect the cable shield and ground potential at the inlet to the cabinet or housing. This allows induced interference to dissipate and to be kept away from devices in the cabinet or housing.

Improve shielding performance by placing the shield over a large area!

Higher shielding performance is achieved via low-impedance connection between shield and ground. For this purpose, connect the shield over a large surface area, e.g., WAGO shield connecting system. This is especially recommended for largescale systems where equalizing current or high impulse-type currents caused by atmospheric discharge may occur.

Keep data and signal lines away from sources of interference!

Route data and signal lines separately from all high voltage cables and other sources of high electromagnetic emission (e.g., frequency converter or drives).

3.7.2 Bus Cables

The shielding of the bus line is described in the respective configuration guidelines and standards of the bus system.

3.7.3 Signal Lines

I/O modules for analog signals and some interface I/O modules are equipped with shield clamps.

Use shielded signal lines!

Only use shielded signal lines for analog signals and I/O modules which are equipped with shield clamps. Only then can you ensure that the accuracy and interference immunity specified for the respective I/O module can be achieved even in the presence of interference acting on the signal cable.

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3.7.4 WAGO Shield Connecting System


The WAGO shield connecting system consists of shield clamping saddles, busbars and various mounting carriers. These components can be used to achieve many different configurations.

Figure 19: Examples of the WAGO Shield Connecting System

Figure 20: Application of the WAGO Shield Connecting System

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38 Device Description

4 Device Description

WAGO-I/O-SYSTEM 750


The programmable fieldbus controller 750-815/300-000 (PFC) combines the functionality of a fieldbus coupler and a RS-485 interface connection with the functionality of a programmable logic controller (PLC).

In the Fieldbus Controller, all input signals from the sensors are combined. After connecting the ETHERNET TCP/IP Fieldbus Controller, the Fieldbus Controller determines which I/O modules are on the node and creates a local process image from these. Analog and specialty module data is sent via words and/or bytes; digital data is grouped bit-by-bit.

The local process image is divided into two data zones containing the data received and the data to be sent.

The data of the analog modules is mapped first into the process image. The modules are mapped in the order of their physical position after the controller.

The bits of the digital modules are combined into words and then mapped after the analog ones in the process image. If the number of digital I/Os is greater than 16 bits, the Fieldbus Controller automatically begins a new word.

According to IEC 61131-3 programming, data processing occurs in the PFC. The process results can be output directly on sensors/actuators or transmitted via fieldbus to the higher-order controller.

WAGO-I/OPRO creates application programs that adhere to IEC 61131-3.

CODESYS by 3S (the standard programming system) serves as the basis of

WAGO-I/OPRO , which was expanded specifically with the target files for all

WAGO controllers.

For IEC-61131-3 programming, the fieldbus controller provides 32 kB of program memory and 32 kB of data memory; 30 kB of this is available for use with 8 kB of retain memory.

The user can access all fieldbus and I/O data.

Library functions are available for function expansion.

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Device Description 39

4.1 View

The view shows three parts:

• The fieldbus port and the switch for the RS-485 interface for setting the 2- or 4-wire connection and for activating/deactivating the corresponding resistor and the rotary encoder switch are located on the left side.

• LEDs for operating status, bus communication, error messages and diagnostics, as well as the service interface are in the middle area.

• The right side shows a power supply unit for the system supply and contacts for the field supply of the series-connected I/O modules via power jumper contacts.

LEDs show the status of the operating voltage for the system and field power (jumper contacts).

Figure 21: View MODBUS RTU Fieldbus Controller

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40 Device Description WAGO-I/O-SYSTEM 750


Table 12: Key for View of MODBUS RTU Fieldbus Controller

Pos.

1

Des- ignation

ON, TxD,

RxD, CRC,

I/O

Explanation

Fieldbus status LEDs

For details see Section:

“Device Description” >

“Display Elements”

2 ---

Group marking carrier (retractable) with additional marking possibility on two miniature

WSB markers

---

3

4

5

6

7

8

9

10

11

12

13

A, B or C

---

24 V, 0 V

+

---

---

-

---

(Ground)

---

---

Status LED’s System/Field Supply

Data Contacts

CAGE CLAMP

CAGE CLAMP

24 VDC

®

®

Connections System Supply

Connections Field Supply

Power Jumper Contact 24 VDC

Unlocking Lug


“Display Elements”

“Connect Devices” > “Data

Contacts/Internal Bus”

“Connect Devices” >

“Connecting a conductor to the CAGE CLAMP

®

”



®

”


“Power Contacts/

Field Supply”

“Mounting” >

“Inserting and Removing

Devices”

CAGE CLAMP

®

Connections Field Supply 0 V



®

”

Power Jumper Contact 0 V

CAGE CLAMP

(Ground)

®

Connections Field Supply


“Power Contacts/

Field Supply”



®

”

Power Jumper Contact (Ground)

Service Interface (open flap)


“Power Contacts/

Field Supply”


“Operating Elements”

14 --- Rotary encoder switch



15

16

17

---

---

---

Locking Disc

Fieldbus connection RS-485

Switch for RS-485

“Mounting” > “Inserting and Removing Devices”


“Connectors”



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4.2 Connectors


4.2.1 Device Supply

The device is powered via terminal blocks with CAGE CLAMP

® connections.

The device supply generates the necessary voltage to power the electronics of the device and the internal electronics of the connected I/O modules.

The fieldbus interface is galvanically separated to the electrical potential of the device.

Figure 22: Device Supply

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4.2.2 Fieldbus Connection

WAGO-I/O-SYSTEM 750


Figure 23: Pin Assignment for D-Sub Fieldbus Connection (Female)

The SUB-D connector for the RS-485 interface is wired as follows:

Table 13: Signal Assignment for the RS-485 Interface

Pin Signal

1 - -

Description

Not used

2 RxD in

3 TxD (RxD) Out (I/O)

Receive signal (4-wire connection only)

Send signal (2-wire connection: send/receive)

4

5

6

DE

GND

V cc

Out

PWR

PWR

Repeater check signal

Signal and supply ground

Supply voltage, +5 V (for external termination only)

7 RxD inverted in

8 TxD (RxD) inverted

Out (I/O)

Receive signal with inverted level (4-wire conductor only)

Send signal with inverted level (2-wire connection: send/receive)

9 - - Not used

The connection point is lowered for mounting into an 80 mm-high switchgear cabinet after connector attachment.

The pin assignment for 2-wire operation complies with the PROFIBUS pin assignment, thus enabling PROFIBUS cabling components to be used.

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4.3 Display Elements

The operating condition of the fieldbus controller or the node is displayed with the help of illuminated indicators in the form of light-emitting diodes (LEDs).

The LED information is routed to the top of the case by light fibres. In some cases, these are multi-colored (red, green or red/green (=orange)).

+

+

+

Figure 24: Display Elements

For the diagnostics of the different domains fieldbus, node and supply voltage, the

LEDs can be divided into three groups:

Table 14: Display Elements Fieldbus Status

LED Color Meaning

ON

TxD green red/green/ orange indicates a correct initialization indictes that data is being sent

RxD red/green/ orange indicates that data is being received

TxD/RxD red/green/ orange indicates the existing transfer of data

Table 15: Display Elements Node Status

LED

I/O

Color red/green/ orange

Meaning

Indicates the operation of the node and signals via a blink code faults encountered.

Table 16: Display Elements Supply Voltage

LED

A

B

Color green green

Meaning indicates the status of the operating voltage – system indicates the status of the operating voltage – power jumper contacts

More information about the LED Signaling

Read the detailed description for the evaluation of the displayed LED state in the section “Diagnostics” > … > “LED Signaling”.

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4.4 Operating Elements

WAGO-I/O-SYSTEM 750


4.4.1 Service Interface

The service interface is located behind the flap.

It is used for the communication with WAGO-I/OCHECK , WAGO-I/OPRO and for downloading firmware.

Figure 25: Service Interface (closed and opened flap)

Table 17: Legend for Figure “Service Interface (closed and opened flap)”

Number

1

2

Description

Open closed flap

View Service Interface

Device must be de-energized!

To prevent damage to the device, unplug and plug in the communication cable only when the device is de-energized!

The connection to the 4-pin header under the cover flap can be realized via the communication cables with the item numbers750-920 and 750-923 or via the

WAGO radio adapter with the item number 750-921.

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4.4.2 Mode Selector Switch

The mode selector switch is located behind the cover flap.


Figure 26: Mode Selector Switch (closed and open damper of the service port)

Table 18: Legend for Figure „Mode Selector Switch“

Number

1

Description

Open the damper

2 Mode selector switch

The mode selector switch determines the loading, starting and stopping of the

PLC-application by the fieldbus controller. This multifunction sliding switch features 3 slide lock positions and a push-button function.

The sliding switch is designed for a number of operations in compliance with

EN61131T2.

Property damages due to set outputs!

Please note that set outputs remain set, when you switch the operating switch from “RUN” to “STOP” during the current operation. Since the program is no longer processed, software-related switch offs, i.e. by initiators, are ineffective.

Therefore, program or define all outputs, so that these switch to a safe mode at a program stop.

Pre-programming the outputs for program stop!

You have the ability to program the behavior of the fieldbus controller so that the outputs switch in a safe condition in the case of program stop.

For this WAGO-I/OPRO allocates a function with GET_STOP_VALUE (library

“System.lib”), which serves to recognize the last cycle before “STOP”.

The mode selector switch position does not affect software start/stop!

The position of the operating mode switch does not prevent the starting and stopping of the PFC application from WAGO-I/OPRO .

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One of the following functions is active, depending on which of the three static positions — “top”, “center” or “bottom” — the switch is located at when energized or during a hardware or software reset:

Table 19: Mode Selector Switch Positions, Static Positions on PowerOn/Reset

Positions for the mode selector switch

“Top” position

Function

“RUN” – activate program processing,

Boot project (if available) is started

“Center” position “STOP” – stop program processing,

PFC application is stopped

“Bottom” position Do not use. This position is not relevant for the user.

The fieldbus controller performs the following functions if the switch’s position is changed during operation:

Table 20: Mode Selector Switch Positions, Dynamic Positions During Ongoing Operation

Position change for the mode selector switch

From the top to the center position

From the center to the top position

From the center to the bottom position

From the bottom to the center position

Function

“STOP” – stop program processing,

PFC application is stopped

“RUN” – activate program processing,

Boot project (if available) is started

No reaction.

The bootstrap loader is started after PowerOn/Reset

No reaction.

Press down

(e.g., using a screwdriver)

Hardware reset.

All outputs are reset; variables are set to 0, FALSE, or to an initial value.

Retain variables or markers are not changed.

A hardware reset can be executed on STOP or on RUN at any position of the mode selector switch!

Fieldbus coupler restart.

The operating mode is changed internally at the end of a PFC cycle.

4.4.3 Rotary Encoder Switch

Station address from 1 to 247 can be set using the two hexadecimal rotary encoder switches. The configuration or programming mode can also be set using the rotary encoder switch.

Figure 27: Rotary Encoder Switch

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50

51

52

53

54

55

56

57

58

59

F

0

1

C

D

E

4

5

6

7

8

9

A-

B

1

2

3

E

F

0

B

C

D

8

9

A-

44

45

46

47

48

49

36

37

38

39

40

41

42

43

30

31

32

33

34

35

24

25

26

27

28

29

16

17

18

19

20

21

22

23

10

11

12

13

14

15

7

8

9

4

5

6

Table 21: Rotary Encoder Switch Positions

Decimal value

0

Switch setting "x1" Switch setting "x10" Result

0 0 Configuration/Programming mode (serial)

1

2

3

1

2

3

0

0

0

Slave address/Station address 1



4

5

6

7

8

9

0

0

0

0

0

0







A-

B

C

D

E

F

0

1

2

3

4

5

6

7

0

0

0

0

0

0

1

1

1

1

1

1

1

1















2

3

4

5

6

7

8

9

A-

B

1

1

1

1

1

1

1

1

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

3

3

3

3

3

3

3

3

3

3

3

3





































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E

F

0

1

2

B

C

D

5

6

7

8

9

A-

3

4

5

6

7

2

3

4

F

0

1

7

8

9

A-

B

C

D

E

107

108

109

110

111

112

113

114

101

102

103

104

105

106

115

116

117

118

119

95

96

97

98

99

100

87

88

89

90

91

92

93

94

79

80

81

82

83

84

85

86

70

71

72

73

74

75

76

77

78

64

65

66

67

68

69


Decimal value

60


C 3 Slave address/Station address 60

61

62

63

D

E

F

3

3

3




0

1

2

3

4

5

4

4

4

4

4

4







6

7

8

9

A-

B

C

D

E

F

0

1

2

3

4

5

6

4

4

4

4

4

4

4

4

4

4

5

5

5

5

5

5

5


















5

5

5

5

5

5

5

5

5

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

7

7

7

7

7

7

7

7


































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7

8

9

A-

B

C

D

E

4

5

6

1

2

3

F

0

1

2

3

E

F

0

B

C

D

3

4

5

6

7

8

9

A-

167

168

169

170

171

172

173

174

161

162

163

164

165

166

175

176

177

178

179

155

156

157

158

159

160

147

148

149

150

151

152

153

154

139

140

141

142

143

144

145

146

130

131

132

133

134

135

136

137

138

124

125

126

127

128

129


Decimal value

120


8 7 Slave address/Station address 120

121

122

123

9

A-

B

7

7

7




C

D

E

F

0

1

7

7

7

7

8

8







2

3

4

5

6

7

8

9

A-

B

C

D

E

F

0

1

2

8

8

8

8

8

8

8

8

8

8

8

8

8

8

9

9

9


















9

9

9

9

9

9

9

9

9

9

9

9

9

A-

A-

A-

A-

A-

A-

A-

A-

A-

A-

A-

A-

A-

A-

A-

A-

B

B

B

B


































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3

4

5

6

7

8

9

A-

0

1

2

D

E

F

B

C

D

E

F

7

8

9

A-

B

C

2

3

4

5

6

F

0

1

227

228

229

230

231

232

233

234

221

222

223

224

225

226

235

236

237

238

239

215

216

217

218

219

220

207

208

209

210

211

212

213

214

199

200

201

202

203

204

205

206

190

191

192

193

194

195

196

197

198

184

185

186

187

188

189


Decimal value

180


4 B Slave address/Station address 180

181

182

183

5

6

7

B

B

B




8

9

A-

B

C

D

B

B

B

B

B

B







E

F

0

1

2

3

4

5

6

7

8

9

A-

B

C

D

E

B

B

C

C

C

C

C

C

C

C

C

C

C

C

C

C

C


















C

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E


































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Decimal value

240


0 F Slave address/Station address 240

241

242

243

1

2

3

F

F

F




244

245

246

247

255

4

5

6

7

F

F

F

F

F

F





Manual configuration mode, see Section "Device

Description" > … > "Manual Configuration"

4.4.3.1 Manual Configuration

Apply parameters set in non-volatile memory!

Parameters set in configuration mode are only applied in non-volatile memory when you exit configuration mode. If you do not exit configuration mode correctly, the settings are discarded!

Exit configuration mode correctly after creating the parameters to apply them!

Discard parameters set incorrectly by users!

You can discard incorrect parameters set during configuration before they are applied in the non-volatile memory.

Proceed as described below to discard parameters:

1. Turn the power supply off.

2. Set the correct station address at the rotary encoder switches if necessary.

3. Turn the power supply on again.

Im Folgenden wird die Vorgehensweise bei der manuellen Konfiguration beschrieben.

The procedures for manual configuration are described in this section.

1. Switch off the power to the device.

2. Set the value ‘F’ (‘FF’ = station address 255) at both rotary encoder switches.

3. Set the operating mode selector switch to the center position ‘STOP’.




The device is in configuration mode.

The ON LED is off.

5. Wait until the RxD LED lights up green.

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

Note: While adjusting the rotary encoder switches, the TxD LED and CRC

LED remain off!

6. Set the parameter to be changed at rotary encoder switch ‘x1’.

7. Set a required value at rotary encoder switch ‘x10’.

8. Set the selector switch to the top position ‘RUN’.

9. Wait until the TxD LED (green) and CRC LED (red) light up.

10. Set the selector switch to the center position.

11. Wait until either the TxD LED or the CRC LED goes out.



TxD LED remains lit:

The set combination for the rotary encoder switch is valid.

The setting has been applied.



CRC LED remains lit:

The set combination for the rotary encoder switch is invalid.

The setting has been rejected.

12. Set any further parameters as required using the rotary encoder switch.

Starting at Step 6, repeat the steps described for this above.

To end the configuration mode and apply the settings you must set station address

‘0’ as follows:

1. Set the value ‚0‘ at both rotary encoder switches.

2. Set the selector switch to the top position ‘RUN’.

3. Wait until the TxD LED (green) and CRC LED (red) light up.

4. Set the operating mode selector switch to the center position ‘STOP’.



The settings are applied.



I/O LED flashes red.



The I/O LED and ON LED light up green.



The fieldbus controller is now in Configuration/Programming mode (station address ‚0‘).

Manual

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If required, another station address can be set:

1. Switch off the power to the device.

2. Set a station address via the rotary encoder switches.




The fieldbus controller accepts the set station address.


Table 22: Manual Configuration

Switch setting "x1"

1 Baud Rate Index

Switch setting "x10" Result

0 150 baud

1 300 baud

2 Byte Frame Index

2

3

4

5

6

7

8

9

A-

0

1

2

3

3 DataLength

4 EOF Time Index

0

5 Modbus Mode

6 Error Check

7 Disable Watchdog 0

1

8 Compatibility mode 0

1

6

7

0

1

0

1

3

4

5

1

0

1

2

600 baud

1200 baud

2400 baud

4800 baud

9600 baud

*)

19200 baud

38400 baud

57600 baud

115200 baud

8 Data bits => 1 Stop bit "no parity"

*)

7 Data bits => 2 Stop bits "no parity"

1 Stop bit "even parity"

1 Stop bit "odd parity"



8 Data bits

*)

7 Data bits

‚Frametime‘

100 ms

200 ms

500 ms

1000 ms

1 ms

10 ms

50 ms

ASCII

RTU

*) disabled enabled

*)

Watchdog enabled

*)

Watchdog disabled

Non-compliant response

*)

Compatibility regarding word access to bit values

*)

*)

Factory setting

Manual

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4.4.4 RS-485 Switches

WAGO-I/O-SYSTEM 750


The settings for 2- or 4-wire connection and activating/deactivating the corresponding terminating resistors are made using switches in the interface area of the fieldbus coupler/controller.

Note: Switches 2 and 3 and 4 and 5 should always be moved together (as a pair).

2

3

4

5

Figure 28: RS-485 Switches

Table 23: RS-485 Switches

Pos.

1

Function

Switchover of 2-/4-wire transmitting path

Termination for 4-wire receiving path

Termination for 2-/4-wire transmitting path

Switch setting

Bottom (2-wire)

Top (4-wire)

Left (off)

Right (on)

Figure 29: Internal Terminating Resistors and Interface Switches

The standard factory setting for the fieldbus coupler/controller is 2 wire connection and termination deactivated.

The receiving lines can also be terminated for the 4-wire connection.

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Table 24: Technical Data – Device Data

Width

Height (from upper edge of DIN 35 rail)

51 mm/2.01 in

65 mm

Protection type IP20

Table 25: Technical Data – System data

Max. number of bus participants

Transmission medium

Bus connection

Bus segment length max

Baud rate

247 with repeater

Shielded Cu cable 2 (4) x 0.25 mm

2

1 x D-Sub 9; socket

1200 m (depending on baud rate/bus cable)

150 baud … 115.2 kBaud

Max. number of I/O modules

Program memory

Data memory

Remanent memory

4.5.3 Supply

64

32 kByte

32 kByte

8 kByte

Table 26: Technical Data – Supply

Voltage supply

Input current max.

Efficiency of the power supply

Internal current consumption

Total current for I/O modules

Isolation

DC 24 V (-25 % ... +30 %)

500 mA at 24 V

87 %

350 mA at 5 V

1650 mA at 5 V

500 V system/supply

Voltage via power jumper contacts DC 24 V (-25 % ... +30 %)

Current via power jumper contacts max.

DC 10 A

Manual

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4.5.4 Fieldbus MODBUS RTU

WAGO-I/O-SYSTEM 750


Table 27: Technical Data – Fieldbus MODBUS RTU

Input process image max

Output process image max

Input variables max

Output variables max

512 Byte

512 Byte

512 Byte

512 Byte

4.5.5 Accessories

Table 28: Technical Data – Accessories

Miniature WSB Quick marking system

WAGO-I/OPRO

4.5.6 Connection Type

Table 29: Technical Data – Field Wiring

Wire connection

Cross section

Stripped lengths

Table 30: Technical Data – Power Jumper Contacts

0.08 mm² … 2.5 mm², AWG 28 … 14

8 mm … 9 mm / 0.33 in

Power jumper contacts

Voltage drop at I max.

Table 31: Technical Data – Data Contacts

Data contacts

CAGE CLAMP

®

Spring contact, self-cleaning

< 1 V/64 modules

Slide contact, hard gold plated, selfcleaning

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4.5.7 Climatic Environmental Conditions


Table 32: Technical Data – Climatic Environmental Conditions

Operating temperature range

Operating temperature range for components with extended temperature range (750-xxx/325-xxx)

Storage temperature range

0 °C … 55 °C

-20 °C … +60 °C

-25 °C … +85 °C

-40 °C … +85 °C Storage temperature range for components with extended temperature range (750-xxx/325-xxx)

Relative humidity

Resistance to harmful substances

Maximum pollutant concentration at relative humidity < 75 %

Special conditions

Max. 5 % … 95 % without condensation

Acc. to IEC 60068-2-42 and

IEC 60068-2-43

SO

2

≤

25 ppm

H

2

S

≤

10 ppm

Ensure that additional measures for components are taken, which are used in an environment involving:

– dust, caustic vapors or gases

– ionizing radiation

4.5.8 Mechanical Strength acc. to IEC 61131-2

Table 33: Technical Data – Mechanical Strength acc. to IEC 61131-2

Test specification Frequency range Limit value

IEC 60068-2-6 vibration 5 Hz

≤

f < 9 Hz 1.75 mm amplitude (permanent)

3.5 mm amplitude (short term)

9 Hz

≤

f < 150 Hz 0.5 g (permanent)

1 g (short term)

Note on vibration test:

IEC 60068-2-27 shock a) Frequency change: max. 1 octave/minute b) Vibration direction: 3 axes

15 g

Note on shock test: a) A Type of shock: half sine b) Shock duration: 11 ms c) Shock direction: 3x in positive and 3x in negative direction for each of the three mutually perpendicular axes of the test specimen

IEC 60068-2-32 free fall 1 m (module in original packing)

Manual

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4.6 Approvals

WAGO-I/O-SYSTEM 750


More information about approvals.

Detailed references to the approvals are listed in the document “Overview

Approvals WAGO-I/O-SYSTEM 750 ”, which you can find via the internet under: www.wago.com

> SERVICES > DOWNLOADS > Additional documentation and information on automation products > WAGO-I/O-SYSTEM

750 > System Description.

The following approvals have been granted to the basic version and all variations of 750-815/300-000 fieldbus couplers/controllers:

Conformity Marking

C

UL

US

UL508

The following approvals have been granted to 750-815/300-000 fieldbus coupler/controller:

TÜV 07 ATEX 554086 X

I M2 Ex d I Mb

II 3 G Ex nA IIC T4 Gc

II 3 D Ex tc IIIC T135°C Dc

Ambient temperature range:

0 °C ≤ T a

≤ +60 °C

IECEx TUN 09.0001 X

Ex d I Mb

Ex nA IIC T4 Gc

Ex tc IIIC T135°C Dc

Ambient temperature range:

0 °C ≤ T a

≤ +60 °C

C

UL

US

ANSI/ISA 12.12.01

Class I, Div2 ABCD T4

The following approvals have been granted to the variation 750-815750-815/300-

000/325-0000:


I M2 Ex d I Mb

II 3 G Ex nA IIC T4 Gc

II 3 D Ex tc IIIC T135°C Dc

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Permissible ambient temperature range:

• Standard:

0 °C ≤ T a

≤ +60 °C

• Variants with extended temperature range (750-xxx/025-xxx): -

20 °C ≤ T a

≤ +60 °C

IECEx TUN 09.0001 X

Ex d I Mb

Ex nA IIC T4 Gc

Ex tc IIIC T135°C Dc

Permissible ambient temperature range:

• Standard:

0 °C ≤ T a

≤ +60 °C

• Variants with extended temperature range (750-xxx/025-xxx): -

20 °C ≤ T a

≤ +60 °C

The following ship approvals have been granted to the basic version and all variations of 750-815/300-000 I/O modules listed in the table:

Table 34: Ship approvals

750-

815/300-

0000

/325-

0000 x x x x x x x x x x x x x x x x

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4.7 Standards and Guidelines

750-815/300-000 meets the following requirements on emission and immunity of interference:

EMC CE-Immunity to interference acc. to EN 61000-6-2: 2005

EMC CE-Emission of interference acc. to EN 61000-6-4: 2007

EMC marine applications-Immunity to interference acc. to Germanischer Lloyd (2003)

EMC marine applications-Emission of interference acc. to Germanischer Lloyd (2003)

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5 Mounting

Mounting 61

5.1 Installation Position

Along with horizontal and vertical installation, all other installation positions are allowed.

Use an end stop in the case of vertical mounting!

In the case of vertical assembly, an end stop has to be mounted as an additional safeguard against slipping.

WAGO order no. 249-116 End stop for DIN 35 rail, 6 mm wide

WAGO order no. 249-117 End stop for DIN 35 rail, 10 mm wide

5.2 Overall Configuration

The maximum total length of a fieldbus node without fieldbus coupler/controller is 780 mm including end module. The width of the end module is 12 mm. When assembled, the I/O modules have a maximum length of 768 mm.

Examples:

• 64 I/O modules with a 12 mm width can be connected to a fieldbus coupler/controller.

• 32 I/O modules with a 24 mm width can be connected to a fieldbus coupler/controller.

Exception:

The number of connected I/O modules also depends on the type of fieldbus coupler/controller is used. For example, the maximum number of stackable I/O modules on one PROFIBUS DP/V1 fieldbus coupler/controller is 63 with no passive I/O modules and end module.

Observe maximum total length of a fieldbus node!

The maximum total length of a fieldbus node without fieldbus coupler/controller and without using a 750-628 I/O Module (coupler module for internal data bus extension) may not exceed 780 mm.

Also note the limitations of individual fieldbus couplers/controllers.

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Increase the total length using a coupler module for internal data bus extension!

You can increase the total length of a fieldbus node by using a 750-628 I/O

Module (coupler module for internal data bus extension). For such a configuration, attach a 750-627 I/O Module (end module for internal data bus extension) after the last I/O module of a module assembly. Use an RJ-45 patch cable to connect the I/O module to the coupler module for internal data bus extension of another module block.

This allows you to segment a fieldbus node into a maximum of 11 blocks with maximum of 10 I/O modules for internal data bus extension.

The maximum cable length between two blocks is five meters.

More information is available in the manuals for the 750-627 and 750-628 I/O

Modules.

WAGO-I/O-SYSTEM 750


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Mounting 63

5.3 Mounting onto Carrier Rail

5.3.1 Carrier Rail Properties

All system components can be snapped directly onto a carrier rail in accordance with the European standard EN 50022 (DIN 35).

Do not use any third-party carrier rails without approval by WAGO!

WAGO Kontakttechnik GmbH & Co. KG supplies standardized carrier rails that are optimal for use with the I/O system. If other carrier rails are used, then a technical inspection and approval of the rail by WAGO Kontakttechnik GmbH &

Co. KG should take place.

Carrier rails have different mechanical and electrical properties. For the optimal system setup on a carrier rail, certain guidelines must be observed:

• The material must be non-corrosive.

• Most components have a contact to the carrier rail to ground electromagnetic disturbances. In order to avoid corrosion, this tin-plated carrier rail contact must not form a galvanic cell with the material of the carrier rail which generates a differential voltage above 0.5 V (saline solution of 0.3 % at 20°C).

• The carrier rail must optimally support the EMC measures integrated into the system and the shielding of the I/O module connections.

• A sufficiently stable carrier rail should be selected and, if necessary, several mounting points (every 20 cm) should be used in order to prevent bending and twisting (torsion).

• The geometry of the carrier rail must not be altered in order to secure the safe hold of the components. In particular, when shortening or mounting the carrier rail, it must not be crushed or bent.

• The base of the I/O components extends into the profile of the carrier rail.

For carrier rails with a height of 7.5 mm, mounting points are to be riveted under the node in the carrier rail (slotted head captive screws or blind rivets).

• The medal springs on the bottom of the housing must have low-impedance contact with the DIN rail (wide contact surface is possible).

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5.3.2 WAGO DIN Rail

WAGO-I/O-SYSTEM 750


WAGO carrier rails meet the electrical and mechanical requirements shown in the table below.

Table 35: WAGO DIN Rail

Order number Description

210-113 /-112 35 x 7.5; 1 mm; steel yellow chromated; slotted/unslotted

210-114 /-197

210-118

210-198

210-196

35 x 15; 1.5 mm; steel yellow chromated; slotted/unslotted

35 x 15; 2.3 mm; steel yellow chromated; unslotted

35 x 15; 2.3 mm; copper; unslotted

35 x 7.5; 1 mm; aluminum; unslotted

5.4 Spacing

The spacing between adjacent components, cable conduits, casing and frame sides must be maintained for the complete fieldbus node.

Figure 30: Spacing

The spacing creates room for heat transfer, installation or wiring. The spacing to cable conduits also prevents conducted electromagnetic interferences from influencing the operation.

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Mounting 65

5.5 Mounting Sequence

Fieldbus couplers/controllers and I/O modules of the WAGO-I/O-SYSTEM 750 are snapped directly on a carrier rail in accordance with the European standard EN

50022 (DIN 35).

The reliable positioning and connection is made using a tongue and groove system. Due to the automatic locking, the individual devices are securely seated on the rail after installation.

Starting with the fieldbus coupler/controller, the I/O modules are mounted adjacent to each other according to the project design. Errors in the design of the node in terms of the potential groups (connection via the power contacts) are recognized, as the I/O modules with power contacts (blade contacts) cannot be linked to I/O modules with fewer power contacts.

Risk of injury due to sharp-edged blade contacts!

The blade contacts are sharp-edged. Handle the I/O module carefully to prevent injury.

Insert I/O modules only from the proper direction!

All I/O modules feature grooves for power jumper contacts on the right side. For some I/O modules, the grooves are closed on the top. Therefore, I/O modules featuring a power jumper contact on the left side cannot be snapped from the top.

This mechanical coding helps to avoid configuration errors, which may destroy the I/O modules. Therefore, insert I/O modules only from the right and from the top.

Don't forget the bus end module!

Always plug a bus end module 750-600 onto the end of the fieldbus node! You must always use a bus end module at all fieldbus nodes with WAGO-I/O-

SYSTEM 750 fieldbus couplers/controllers to guarantee proper data transfer.

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66 Mounting WAGO-I/O-SYSTEM 750


5.6 Inserting and Removing Devices

Perform work on devices only if they are de-energized!

Working on energized devices can damage them. Therefore, turn off the power supply before working on the devices.

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Mounting 67

5.6.1 Inserting the Fieldbus Coupler/Controller

1. When replacing the fieldbus coupler/controller for an already available fieldbus coupler/controller, position the new fieldbus coupler/controller so that the tongue and groove joints to the subsequent I/O module are engaged.

2. Snap the fieldbus coupler/controller onto the carrier rail.

3. Use a screwdriver blade to turn the locking disc until the nose of the locking disc engages behind the carrier rail (see the following figure). This prevents the fieldbus coupler/controller from canting on the carrier rail.

With the fieldbus coupler/controller snapped in place, the electrical connections for the data contacts and power contacts (if any) to the possible subsequent I/O module are established.

Figure 31: Release Tab Standard Fieldbus Coupler/Controller (Example)

5.6.2 Removing the Fieldbus Coupler/Controller

1. Use a screwdriver blade to turn the locking disc until the nose of the locking disc no longer engages behind the carrier rail.

2. Remove the fieldbus coupler/controller from the assembly by pulling the release tab.

Electrical connections for data or power contacts to adjacent I/O modules are disconnected when removing the fieldbus coupler/controller.

Manual

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68 Mounting WAGO-I/O-SYSTEM 750


5.6.3 Inserting the I/O Module

1. Position the I/O module so that the tongue and groove joints to the fieldbus coupler/controller or to the previous or possibly subsequent I/O module are engaged.

Figure 32: Insert I/O Module (Example)

2. Press the I/O module into the assembly until the I/O module snaps into the carrier rail.

Figure 33: Snap the I/O Module into Place (Example)

With the I/O module snapped in place, the electrical connections for the data contacts and power jumper contacts (if any) to the fieldbus coupler/controller or to the previous or possibly subsequent I/O module are established.

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Mounting 69

5.6.4 Removing the I/O Module

1. Remove the I/O module from the assembly by pulling the release tab.

Figure 34: Removing the I/O Module (Example)

Electrical connections for data or power jumper contacts are disconnected when removing the I/O module.

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70 Connect Devices

6 Connect Devices

WAGO-I/O-SYSTEM 750


6.1 Data Contacts/Internal Bus

Communication between the fieldbus coupler/controller and the I/O modules as well as the system supply of the I/O modules is carried out via the internal bus. It is comprised of 6 data contacts, which are available as self-cleaning gold spring contacts.

Figure 35: Data Contacts

Do not place the I/O modules on the gold spring contacts!

Do not place the I/O modules on the gold spring contacts in order to avoid soiling or scratching!

Ensure that the environment is well grounded!

The devices are equipped with electronic components that may be destroyed by electrostatic discharge. When handling the devices, ensure that the environment

(persons, workplace and packing) is well grounded. Avoid touching conductive components, e.g. data contacts.

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6.2 Power Contacts/Field Supply

Connect Devices 71

Risk of injury due to sharp-edged blade contacts!

The blade contacts are sharp-edged. Handle the I/O module carefully to prevent injury.

Self-cleaning power jumper contacts used to supply the field side are located on the right side of most of the fieldbus couplers/controllers and on some of the I/O modules. These contacts come as touch-proof spring contacts. As fitting counterparts the I/O modules have male contacts on the left side.

Figure 36: Example for the Arrangement of Power Contacts

Field bus node configuration and test via smartDESIGNER

With the WAGO ProServe

®

Software smartDESIGNER, you can configure the structure of a field bus node. You can test the configuration via the integrated accuracy check.

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72 Connect Devices WAGO-I/O-SYSTEM 750


6.3 Connecting a Conductor to the CAGE CLAMP

®

The WAGO CAGE CLAMP

®

connection is appropriate for solid, stranded and finely stranded conductors.

Only connect one conductor to each CAGE CLAMP

®

!

Only one conductor may be connected to each CAGE CLAMP

®

.

Do not connect more than one conductor at one single connection!

If more than one conductor must be routed to one connection, these must be connected in an up-circuit wiring assembly, for example using WAGO feedthrough terminals.

Exception:

If it is unavoidable to jointly connect 2 conductors, then you must use a ferrule to join the wires together. The following ferrules can be used:

Length:

Nominal cross section

max.

:

8 mm

1 mm

2

for 2 conductors with 0.5 mm

2

each

WAGO product: 216-103 or products with comparable properties

1. For opening the CAGE CLAMP

®

insert the actuating tool into the opening above the connection.

2. Insert the conductor into the corresponding connection opening.

3. For closing the CAGE CLAMP

®

simply remove the tool. The conductor is now clamped firmly in place.

Figure 37: Connecting a Conductor to a CAGE CLAMP

®

Manual

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WAGO-I/O-SYSTEM 750


7 Function Description

7.1 Operating System

7.1.1 Run-up

Function Description 73

The mode selector switch may not be located in the lower position!

The mode selector switch may not be set at the bottom position during runup!

The fieldbus controller begins running up after switching on the power supply or after a reset. The internal PFC program is then transferred to the RAM.

During the initialization phase, the fieldbus controller detects the I/O modules and the current configuration and sets the variables to 0 or FALSE, or to an initial value specified by the PFC program. The flags retain their status. During this phase the I/O LED will flash red.

When run-up is successful, the I/O LED then stays lit continuously in green.

More information about the LED Signaling

Read the detailed description for the evaluation of the displayed LED state in the section “Diagnostics” > … > “LED Signaling”.

7.1.2 PFC Cycle

After error-free run-up, the PFC cycle starts with the mode selector switch at the top position, or on a Start command from WAGO-I/OPRO . The input and output data for the field bus, I/O modules and the timer values are read. The PFC program contained in the RAM is then processed, after which the output data for the field bus and I/O modules is written to the process image. At the end of the

PFC cycle, the operating system functions are executed for diagnostics and communication (among other things) and the timer values are updated. The new cycle begins by reading in of the input and output data and the timer values.

The operating mode is changed (“STOP”/“RUN”) at the end of a PFC cycle.

The cycle time is the time from the beginning of the PFC program up to the next beginning of the cycle. If a loop is programmed within the PFC program, the PFC runtime and the PFC cycle time will be extended accordingly.

The inputs, outputs and timer values are not updated while the PFC program is being processed. Updating is performed only as defined at the end of the PFC

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74 Function Description WAGO-I/O-SYSTEM 750

750-815/300-000 Programmable Fieldbus Controller program. As a result, it is not possible to wait on an event from the process or a set period to expire while a loop is in progress.

Figure 38: Run-up of the Fieldbus Controller

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7.2 Process Data Architecture


7.2.1 Basic Structure

After switching on, the controller identifies all I/O modules connected with the node that send or receive data (data width/bit width > 0).

A node can consist of a mixed arrangement of analog and digital modules.

Additional Information

For the number of input and output bits or bytes of the individual I/O modules, refer to the corresponding description of the I/O modules.

The controller creates an internal local process image on the basis of the data width, the type of I/O module and the position of the module in the node. This process image is broken down into an input and an output data range.

The data of the digital I/O modules is bit-oriented; i.e., digital data is sent bit by bit. Analog I/O modules represent the group of byte-oriented modules – data is sent byte by byte.

This group includes: counter modules, angle and distance measurement modules and communication modules.

For both, the local input and output process image, the I/O module data is stored in the corresponding process image depending on the order in which the modules are connected to the controller.

Hardware changes can result in changes of the process image!

If the hardware configuration is changed by adding, changing or removing of I/O modules with a data width > 0 bit, this result in a new process image structure.

The process data addresses would then change. If adding modules, the process data of all previous modules has to be taken into account.

A memory range of 256 words (word 0 ... 255) is initially available in the fieldbus controller for the process image of the physical input and output data.

For the image of the MODBUS/PFC variables, the memory range of words 256 ...

511 is reserved, meaning the image for the MODBUS/PFC variables is created behind the process image for the bus module data.

Access by the PLC to process data is made independently from the fieldbus system in all WAGO fieldbus controllers; access is always conducted through an application-related IEC-61131-3 program.

How the data is accessed from the fieldbus side depends on the fieldbus however.

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For the fieldbus controller, a MODBUS RTU master can access the data via implemented MODBUS functions, whereby decimal or hexadecimal MODBUS addresses are used.


For a detailed description of these fieldbus-specific data access methods, refer to the section "MODBUS Functions".


For the fieldbus-specific process image of any WAGO I/O module, please refer to the section “I/O Modules” > … > “Structure of the process data”.

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7.2.2 Example of an Input Process Image

The following figure is an example of an input process image with input module data.

The configuration is comprised of 16 digital and 8 analog inputs.

Thus, input process image has a data length of 8 words for the analog I/O modules and 1 word for the digital modules; i.e., 9 words in total.

Figure 39: Example of an Input Process Image

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7.2.3 Example of an Output Process Image

The following example for the output process image with output module data consists of 2 digital and 4 analog outputs.

The output data process image for register access comprises 4 words for the analog outputs and 1 word for the digital outputs; i.e., 5 words in total.

Write access to output data is possible starting from MODBUS address 0x0000.

In divergence from the MODBUS standard, an offset of 200hex (0x0200) must be added to the MODBUS address for read access to output data. Output data can be read back in under the same addresses both with the MODBUS functions for read access to output data (FC1, FC3, FC23) and with the MODBUS functions for read access to input data (FC2, FC4).

Figure 40: Example of an Output Image

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7.2.4 Process Data MODBUS RTU


For some I/O modules (and their variations), the structure of the process data depends on the fieldbus.

The internal mapping method for data greater than one byte conforms to Intel formats.

Additional information about the fieldbus-specific process data structure

For the respective fieldbus-specific structure of the process values of any I/O module within the 750 or 753 Series of the WAGO-I/O-SYSTEM, refer to

Section “Structure of Process Data for MODBUS RTU”.

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7.3 Data Exchange

The MODBUS RTU protocol is used for exchange of process data for the fieldbus controller.

MODBUS RTU operates according to the master/slave principle. The master is a higher-level controller, e.g., a PC or a PLC.

The fieldbus controllers of the WAGO-I/O-SYSTEM 750 are typically slave devices. Fieldbus controllers may also assume the master function through appropriate IEC 61131-3 programming.

The master requests communication. This request can be directed to certain nodes by addressing. The nodes receive the request and, depending on the request type, send a reply to the master.

For the data exchange, the fieldbus controller has essentially three interfaces:

• interface to the fieldbus (fieldbus master),

• PLC function of the fieldbus controller (CPU)

• interface to the I/O modules.

There is a data exchange between: fieldbus master and the I/O modules, PLC function of the fieldbus controller (CPU) and the I/O modules and between the fieldbus master and PLC function of the PFC (CPU).

If MODBUS is used as the fieldbus, the MODBUS master accesses the date using the MODBUS functions implemented in the controller.

Data access is carried out with the aid of an IEC-61131-3 application program.

Data addressing varies greatly here.

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7.3.1 Memory Areas


Figure 41: Memory Areas and Data Exchange

In the memory space word 0 ... 255, the controller process image contains the physical data of the bus modules.

1 The input module data can be read by the CPU and by the fieldbus side.

2 In the same manner, writing on the output modules is possible from the

CPU and from the fieldbus side. The value of the master is put out on the output while writing on an output.

The PFC variables are filed in the memory space Word 256 ... 511 of the process image.

3 The MODBUS-PFC input variables are written to the input memory area from the fieldbus side and read in by the CPU for processing.

4 The variables processed by the CPU using the IEC-61131-3 program are places in the output memory area, where they can be read out by the master.

In addition, all output data is mirrored in the Programmable Fieldbus Controller to a memory area with the address offset 0x0200 and 0x1000. This allows output values to be read back in by adding 0x0200 or 0x1000 to the MODBUS address.

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Other memory areas are also provided in the controller, some of which cannot be accessed by the fieldbus side, however:

• Data memory (32 kByte)

The data memory is a volatile RAM memory for creating variables that are not required for communication with the interfaces, but rather for internal processing procedures, such as calculation of results.

• Program memory (32 kByte)

The IEC-61131-3 program is stored in the program memory. The code memory is a Flash ROM. When power is switched on, the program is transferred from the flash to the RAM memory. After error-free run-up, the

PFC cycle starts with the mode selector switch at the top position, or on the

Start command from the WAGO-I/OPRO.

• NOVRAM Remanent memory (8 kByte)

The remanent memory is a non-volatile memory; i.e., all values of flags and variables, that are explicitly defined by “var retain”, are retained even after a loss of power. Memory management is performed automatically. The 8 KB memory area is used jointly for flags and retain variables.

Markers are only remanent under “var retain”!

Please note that the bit memory is only retentive if you have declared it as such under “var retain”.

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Figure 42: Example Declaration of Remanent Flags by “var retain”

This breakdown can be varied (see following explanation).

NOVRAM memory allocation can be changed in WAGO-I/O-PRO!

The breakdown of the NOVRAM can be modified when required in the programming software WAGO-I/OPRO /Register “Resources”/Dialog window

“Target system settings”.

The start address for the flag and retain range is specified by default as 16#40000 for the fieldbus controller. The range sizes and the start address can be varied, however.

If you use the default values, the flag and retain range will overlap. Depending on the declaration in the program, the range is then used for flag or retain variables.

In order to prevent an overlapping of the ranges, you can specify 16#41000 as the retain start address, for example. In this case, the flags will be stored first (starting with 16#40000) and then the retain variables (starting with 16#41000).

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7.3.2 Addressing

WAGO-I/O-SYSTEM 750


Module inputs and outputs in a controller are addressed internally as soon as they are started. The order in which the connected modules are addressed depends on the type of module that is connected (input module, output module).

The process image is formed from these addresses.

The physical arrangement of the I/O modules in the fieldbus node is arbitrary.

Use various options for addressing the bus terminals!

Connected modules in more detail. It is essential that you understand these correlations in order to conduct conventional addressing by counting.

The WAGO I/O Configurator is also available as a further addressing option.

The Configurator can assist you in addressing and protocol assignment for the connected modules. You must select the connected modules in the I/O

Configurator; the software then takes care of correct addressing (see following

Figure).

The I/O Configurator is started from the WAGO-I/OPRO .

For more details, refer to Section “Configuration using the WAGO-I/OPRO I/O

Configurator”.

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7.3.2.1 Addressing of I/O Modules

Addressing first references complex modules (modules that occupy several bytes) in accordance with their physical order downstream of the fieldbus coupler/controller; i.e., they occupy addresses starting from word 0.

Following these is the data for the remaining modules, compiled in bytes

(modules that occupy less than one byte). In this process, byte by byte is filled with this data in the physical order. As soon a complete byte is occupied by the bit oriented modules, the process begins automatically with the next byte.

Hardware changes can result in changes of the process image!

I f the hardware configuration is changed and/or expanded; this may result in a new process image structure. In this case, the process data addresses also change.

If adding modules, the process data of all previous modules has to be taken into account.

Observe process data quantity!

For the number of input and output bits or bytes of the individual IO modules please refer to the corresponding description of the IO modules.

Table 36: Data Width for I/O Modules

Data width ≥ 1 word (channel)

Analog input modules

Analog output modules

Input modules for thermocouples

Input modules for resistor sensors

Pulse width output modules

Interface modules

Up/down counters

I/O modules for angle and distance measurement

Data width = 1 bit (channel)

Digital input modules

Digital output modules

Digital output modules with diagnostics (2 bits/channel)

Supply modules with fuse carrier/diagnostics

Solid-state load relays

Relay output modules

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7.3.2.2 IEC-61131-3 Address Areas

IEC-61131-3 Overview of Address Areas:

Table 37: IEC-61131-3 Address Areas

Address area phys. inputs

MODBUS

Access read phys. outputs

MODBUS

PFC-IN variables

MODBUS

PFC-OUT variables

PLC

Access read

Description

Physical inputs

(%IW0...%IW255 read/write read/write Physical outputs

(%QW0...%QW255 read/write read Volatile PLC input variables

(%IW256...%IW511) read read/write Volatile PLC output variables

(%QW256...%QW511)

Configuration register read/write

Firmware register

Retain variables

- see section “MODBUS

Functions” > … > “Configuration

Registers” read - see section “MODBUS

Functions” > … > “Firmware

Information Registers” read/write read/write Remanent memory

(%MW0...%MW4095)

7.3.2.3 Absolute Addressing

Direct presentation of individual memory cells (absolute addresses) based on IEC-

61131-3 is performed using character strings:

Table 38: Absolute Addressing

Position Prefix Designation

1 % Introduces an absolute address

2

3

I

Q

M

X*

B

W

D

Input

Output

Flag

Single bit

Byte (8 bits)

Word (16 bits)

Doubleword (32 bits)

Comment

Data width

4 Address such as word-by-word: %QW27 (28th word), bit-by-bit: %IX1.9 (10th bit in the

2nd word)

* The designator “X” for bits can be omitted

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Enter character strings without spaces or special characters!

The character strings for absolute addresses must be entered connected, i.e. without spaces or special characters!

Addressing example:

Table 39: Addressing Example

Bit

Byte

Word

Inputs

%IX14.0 ... 15

%IB28

%IW14

%IB29

Double word

Bit

Byte

Word

Double word

Outputs

%QX5.0 ... 15

%QB10 %QB11

%QW5

%QD2 (top section)

Bit

Byte

Word

Double word

Flags

%MX11.0 ... 15

%MB22 %MB23

%MW11

%MD5 (top section)

%ID7

%IX15.0 ... 15

%IB30

%IW15

%IB31

%QX6.0 ... 15

%QB12

%QW6

%QB13

%QD3 (bottom section)

%MX12.0 ... 15

%MB24 %MB25

%MW12

%MD6 (bottom section)

Calculating addresses (as a function of the word address):

Bit address:

Byte address:

Word address .0 to .15

1 st

2 nd

byte: 2 x word address

byte: 2 x word address + 1

DWord address: Word address (even number) / 2

or Word address (uneven number) / 2, rounded down

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7.3.3 Data Exchange Between MODBUS/RTU Master and I/O

Modules

Data exchange between the MODBUS/RTU Master and the I/O modules is conducted using the MODBUS functions implemented in the controller by means of bit-by-bit or word-by-word reading and writing routines.

There are 4 different types of process data in the controller:

• Input words

• Output words

• Input bits

• Output bits

Access by word to the digital I/O modules is carried out in accordance with the following table:

Table 40: Allocation of digital inputs and outputs to process data words in accordance with the

Intel format

Digital inputs/ outputs

Process data word

Byte

16. 15. 14. 13. 12. 11. 10. 9.

Bit

15

Bit

14

Bit

13

Bit

12

Bit

11

Bit

10

High byte D1

Bit

9

Bit

8

8.

Bit

7

7.

Bit

6

6.

Bit

5

5.

Bit

4

4.

Bit

3

Bit

Low byte D0

3.

2

2.

Bit

1

1.

Bit

0

Output can be read back in by adding an offset of 200 hex

(0x0200) to the

MODBUS address.

Figure 43: Data Exchange Between MODBUS Master and I/O Modules

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Register functions start at address 0x1000. These functions can be addressed in a similar manner with the MODBUS function codes that are implemented

(read/write).

The specific register address is then specified instead of the address for a module channel.


A detailed description of the MODBUS addressing may be found in Chapter

“Fieldbus Communication” > … > “MODBUS Register Mapping”.

7.3.4 Data Exchange Between PLC Function (CPU) and I/O

Modules

The PLC function (CPU) of the PFC uses direct addresses to access the I/O module data.

The PFC uses absolute addresses to reference the input data. The data can then be processed internally in the controller using the IEC-61131-3 program.

Flags are stored in a non-volatile memory area in this process. The results of linking can then be written directly to the output data employing absolute addressing.

Figure 44: Data Exchange Between PLC Function (CPU) of the PFC and the I/O Modules

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7.3.5 Data Exchange Between MODBUS RTU Master and the PLC

Function (CPU)

The fieldbus master and the PLC function (CPU) of the fieldbus controller have different perspectives on data.

Variable data generated by the master is viewed as input variables to the fieldbus controller, where it is further processed.

Data created in the fieldbus controller is transmitted via fieldbus to the master and is viewed as output variables.

Access to the MODBUS RTU fieldbus variable data is permited in the fieldbus controller from word address 256 to 511 (double word address 128-255, byte address 512-1023).

Figure 1: Data Exchange Between MODBUS RTU Master PLC and PLC Functionality (CPU)

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7.3.5.1 Example of MODBUS RTU Master and PLC Functionality (CPU

Data access by the MODBUS RTU master

Access to data by the MODBUS Master is always either by word or by bit.

Addressing of the first 256 data words by the I/O modules begins at 0 for wordbased and bit-based access.

Addressing of variable data begins with word 256 for word-based data. Bit-based data starts at:

4096 for bit 0 in word 256



...

8191 for bit 15 in word 511.

The bit number can be determined by using the following formula:

BitNo. = (Word * 16) + BitNo._in_Word

Example: 4097 = ( 256 * 16) + 1

Data access by PLC function (CPU)

The PLC function of the PFC employs a different type of addressing for accessing the same data. PLC addressing is identical with word-based addressing via

MODBUS Master for the declaration of 16-bit variables. However, a different notation is used for declaration of Boolean variables (1 bit) than that used by

MODBUS. Here, the bit address is composed of the elements word address and bit number in the word, separated by a decimal point.

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Example:

WAGO-I/O-SYSTEM 750


Bit access by MODBUS to bit number 4097 => Bit addressing in the PLC

<WordNo>.<BitNo> = 256.1

The PLC function of the PFC can also access data as bytes or double words.

The addresses for byte-based access are calculated using the following equations:

High-byte address = Word address*2

Low-byte address = (Word address*2) + 1

For double word access, the address is calculated using the following equation:

Double word address = High-word address/2 (rounded down)

or = Low-word address/2

Additional information

There is a detailed description of the MODBUS and the corresponding IEC 61131 addressing in section "Fieldbus Communication" > ... > "MODBUS Register

Mapping."

7.3.6 Common Access by PFC and MODBUS RTU Master to

Outputs

The process image for the outputs is written both by the MODBUS RTU Master and by the fieldbus controller so that the I/O module outputs can be set or reset from both sides. The application programs of the MODBUS RTU Master and the

PLC functionality shall be configured so that conflicting instructions for simultaneous setting or resetting of outputs are ruled out. Essentially, the process image will be overwritten by the last edited instruction. überschrieben wird. Somit wird bei gleichzeitigem Schreiben auf einen Ausgang der Wert des Masters auf den Ausgang ausgegeben.

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7.3.7 Application Example


Figure 45: Example of Addressing for a Fieldbus Node

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94 Commissioning

8 Commissioning

WAGO-I/O-SYSTEM 750


The various steps required for starting the device are explained in this documentation in the following sections.

The procedure for making electrical connections is described in the Section

“Connecting the Devices”.

The procedure for configuring for operation is elucidated in the Section “Device

Description” > … > “Rotary Encoder Switch” > “Manual Configuration”. This section contains information about the configuration options that are available and how different configurations can be implemented.

The operating status and malfunctions of the fieldbus coupler/controller are indicated by LEDs. The meaning of the LEDs and their flashing response is explained in the Section “Diagnostics” > … > “LED Signaling”.

To restore the factory settings, proceed as follows:

1. Switch off the supply voltage of the fieldbus controller.

2. Connect the communication cable 750-920 or 750-921 respectively the

Bluetooth

®

Adapter 750-923 to the configuration interface of the fieldbus controller and to your computer.

3. Switch on the supply voltage of the fieldbus controller.

4 Start the WAGO-ETHERNET-Settings/Modbus-Settings program.

5. In the top menu bar, select [Factory Settings] and click [Yes] to confirm.

A restart of the fieldbus node is implemented automatically. The start takes place with the default settings.

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WAGO-I/O-SYSTEM 750 Programming the PFC using WAGO-I/O-PRO 95


9 Programming the PFC using WAGO-I/O-PRO

Using IEC 61131-3 programming, the Programmable Fieldbus Controller 750-

815/300-000 can also utilize the function of a PLC in addition to the functions of a fieldbus coupler. Creation of an application program in line with IEC 61131-3 is performed using the programming tool WAGO-I/OPRO .

A description of programming using WAGO-I/OPRO is not included in this manual. The following sections, on the other hand, contain important information about creating projects in WAGO-I/OPRO and about special modules that you can use explicitly for programming of the Programmable Fieldbus Controller.

Explanations are also provided as to how the IEC 61131-3 program is transferred and how suitable communication drivers are loaded.

One WAGO-I/O-PRO-/(CODESYS)-Instance per traget system!

Note that a simultaneous connection of multiple WAGO-I/OPRO /(CODESYS)

Instances on one target system is not possible.

Name Conventions for WAGO-I/O-PRO/(CODESYS) Projects!

Note that you do not use special characters for the name of your

WAGO-I/OPRO/ (CODESYS) project and limit the name to a maximum of 8 characters.

This will ensure that not always, in case of the online change function is activated simultaneously, for each online change event a new TxT file is created, which contains the paths and the project ID, and that for this additional memory is consumed. With proper choice of the file name, the TxT file is only overwritten each time and does not consume additional memory space.


For a detailed description of using the software, refer to the manual for the

“WAGO-I/OPRO ”. This manual is located in the Internet under http://www.wago.com

.

1. Start the programming tool at Start \ Programs \ WAGO-I/O-PRO .

2. Under File / New create a new project

A dialog window then appears on which you can set the target system for programming.

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Figure 46: Target System Settings Dialog

3. Select the fieldbus controller with the entry WAGO_750-815-300-000_-

_750-816-300-000 and click OK to confirm.

4. In the dialog window that appears select the program type (AWL, KOP,

FUP, AS, ST or CFC).

To ensure that you can access all I/O module data properly in your new project, first compile the I/O module configuration based on the existing fieldbus node hardware.

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9.1 Configuring the Fieldbus Controller using the I/O

Configurator

The I/O Configurator is a plug-in integrated into WAGO-I/OPRO used to determine addresses for I/O modules at a fieldbus controller.

1. 1. In the left half of the screen for the WAGO-I/OPRO interface, select the tab Resources .

2. To start the I/O Configurator, double-click in the tree structure on Control system configuration .

3. Expand the branch Hardware configuration in the tree structure.

4. Right-click on the entry K-Bus and then select Edit in the context menu.

5. In the “Configuration” window that then opens, click on Add to open the module selection window.

6. Select the I/O module you wish to add from the module catalog and attach it to the end of the internal data bus structure by clicking on [>>] and OK .

7. Position all of the required I/O modules in their correct order until this arrangement matches the configuration of the physical node.

Arrange the tree structure in the hardware configuration in the same manner.

Include all I/O modules which supply or receive data.

If you access your fieldbus controller online, you can use the [Start WAGO-I/O-

CHECK and scan] button in the “Configuration” window to read in the physically linked fieldbus controllers with the series-connected I/O modules and display all of the components.

The internal data bus structure in the WAGO I/O Configurator must match the physical node structure!

The number of I/O modules that send or receive data must correspond to the existing hardware (except for supply modules, copying modules or end modules, for example). For the number of input and output bits or bytes of the individual

I/O modules, please refer to their corresponding descriptions.

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Additional information

To open the data sheet for an I/O module, click in the “Configuration” window on the corresponding I/O module and then click the [Data sheet] button. The data sheet is then shown in a separate window.

All current data sheets are available on our website http://www.wago.com

under

Documentation.

8. Click OK to accept the node configuration and close the dialog window.

The addresses for the control system configuration are then recalculated and the tree structure for the configuration is updated.

9. Transfer the project with menu Project > Transfer/Transfer all .


For a detailed description of using the software WAGO-I/OPRO and the I/O

Configurator, refer to the online Help function for WAGO-I/OPRO .

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9.2 MODBUS Libraries for WAGO-I/O-PRO

Various libraries are available in WAGO-I/OPRO for different IEC-61131-3 programming tasks. These contain function blocks for universal use that can streamline program creation.

After incorporating the libraries, you can access their function blocks, functions and data types to use just like ones you have defined yourself.

Information Additional information

All of these libraries are on the installation CD for the

WAGO-I/OPRO software, or at our website http://www.wago.com

.

The following libraries are available specifically for MODBUS RTU projects with

WAGO-I/OPRO .

Table 41: MODBUS Libraries for WAGO-I/OPRO

Library fbconf.lib

Description

Function blocks for communicating MODBUS RTU parameters


For a detailed description of the function blocks and use of the software, refer to the online Help function for WAGO-I/OPRO or the WAGO-I/OPRO manual in the Internet under: http://www.wago.com

.

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9.3 Transfer the IEC program to the controller

Transfer from the PC to the controller of the program for the created IEC-61131-3 application can be performed two ways (see following sections).

• Direct transfer via serial RS-232 port

• Transfer by means of MODBUS RTU via fieldbus

Suitable communication drivers are required for transfer; these can be loaded and configured using WAGO-I/OPRO .

Check/adjust communications parameters of the driver

When selecting the desired driver, watch for the proper settings and adjustments of the communications parameters (see the following description).

"Reset" and "Start" are required to set the physical outputs!

The initialization values for the physical outputs are not set immediately after downloading. Select Online > Reset and subsequently Online > Start in the menu bar of WAGO I/OPRO to set the values.

Stop application before generating large boot projects!

Stop the WAGO-I/OPRO application via Online > Stop before generating a very large boot project, since this may otherwise cause stopping the internal bus. You can restart the application after creating the boot project.


The following description is used for fast access. For details on installing missing communication drivers and using the software, refer to “WAGO-I/OPRO ” available in the Internet under http://www.wago.com

.

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1. Check that the controller mode selector switch is set to the center or top position.

If this is not the case, move the mode selector switch to the center or top position.

2. Use the WAGO communication cable to connect a COM port of your PC to the controller communication port.

9.3.1 Transfer via Serial Service Port

Watch the position of the mode selector switch when accessing the controller!

Prerequisite for the access to the fieldbus controller is that the operating mode switch of the controller, which is located behind the cover of the fieldbus controller next to the service interface, is in the center or top position.

Use the WAGO communication cable to set up a physical connection via serial service port. This cable is included in the scope of supply for the IEC-61131-3 programming tool (order no. 759-333), or can be procured as an accessory item under order no. 750-920.

Do not connect Communication Cable when energized!

To prevent damage to the communications interface, do not connect or disconnect

750-920 respectively 750-923 Communication Cable when energized! The fieldbus coupler must be de-energized!

A communication driver is required for serial data transfer. This driver and its parameters must be entered in the WAGO-I/OPRO in the dialog window

“Communication parameters”.

3. Start the WAGO-I/OPRO software under Start > Programs > WAGO

Software > WAGO-I/O-PRO.

4. In the menu Online select the item Communication parameters .

The dialog window “Communication parameters” then appears. The channels of the currently connected gateway servers are shown on the left side of the dialogue and the already installed communications drivers are shown below. This window is empty in its default settings.

5. Click New to set up a link and then enter a name, such as RS-232

Connection.

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Figure 47: Dialog Window “Communication Parameters”

6. In the selection window, mark the required driver in the right side of the window, Serial (RS-232) 3S Serial RS-232 driver, to configure the serial link between the PC and the controller.

The following properties for the serial port are shown in the center dialog window:

• Port:

• Baud rate:

• Parity:

COM1

19200

Even

• Stop-bits: 1

• Motorola byte order: No

7. If necessary, change the entries according to the above values by clicking on the respective value and editing it.

8. Confirm these settings by clicking OK

The RS-232 port is now configured for transferring the application.

9. Under Online , click the menu item Login to log in to the controller

The WAGO-I/OPRO Server is active during online operation. The communication parameters can not be called up during this time.

Depending on whether a program is already present in the controller, a window will appear asking whether a (new) program should be loaded.

10. Respond with Yes to load the current program.

11. In menu Online, click on Create Boot project.

You compiled project will also be executed by this method, if you restart the controller or if there is a power failure.

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12. Once the program has been loaded, start program processing in the menu

Online , menu item Start .

This command starts the processing of your program in the control system or in the simulation.

“ONLINE” and “RUNNING” will then appear at the right of the status bar.

13. To terminate online operation, click the menu item Log off in the menu

Online .

9.3.2 Transferring the Application via MODBUS RTU

The fieldbus cable physically connects the PC and the fieldbus controller.

An appropriate communication driver is required for data transfer. Enter the driver and its parameters in WAGO-I/OPRO in the “Communication parameters” dialog window:

1. Start the WAGO-I/OPRO software under Start > Programs > WAGO

Software > WAGO-I/O-PRO.

2. In the menu Online select the item Communication parameters .

The dialog window “Communication parameters” then appears. The channels of the currently connected gateway servers are shown on the left side of the dialogue and the already installed communications drivers are shown below.

This window is empty in its default settings.

3. Click on New...

to set up a connection and then specify a name, e.g.,

MODBUS Link.

4. Mark the required driver in the right side of the dialog window to configure the link between the PC and the fieldbus controller via MODBUS.

Use the Modbus driver (WAGO MODBUS driver).

The following standard entries are shown in the center dialog window:

• MODBUS node address: 1

• Transfer method:

• Interface: COM1

RTU

• Baud rate: 9600 Bd

• Character length:

• Parity:

• Stop bits:

• RTS Control:

• Debug level:

8 bits none

1

OFF

16#0000

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5. If necessary, change the entries according to the above values by clicking on the respective value and editing it.

6. Confirm with OK .

The RS-232 port is now configured for transferring the application.

7. Under Online , click the menu item Login to log in to the controller

The WAGO-I/OPRO Server is active during online operation. The communication parameters can not be called up during this time.

Depending on whether a program is already present in the controller, a window will appear asking whether a (new) program should be loaded.

8. Respond with Yes to load the current program.

9. In menu Online, click on Create Boot project.

You compiled project will also be executed by this method, if you restart the controller or if there is a power failure.

10. Once the program has been loaded, start program processing in the menu

Online , menu item Start .

This command starts the processing of your program in the control system or in the simulation.

“ONLINE” and “RUNNING” will then appear at the right of the status bar.

11. To terminate online operation, click the menu item Log off in the menu

Online .

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10 Diagnostics

Diagnostics 105

10.1 LED Signaling

For on-site diagnostics, the fieldbus controller has several LEDs that indicate the operational status of the fieldbus controller or the entire node (see following figure).

Figure 48: Display Elements

The diagnostics displays and their significance are explained in detail in the following section.

The LEDs are assigned in groups to the various diagnostics areas:

Table 42: LED Assignment for Diagnostics

Diagnostics area LEDs

Fieldbus status

Node status

• ON

• TxD

• RxD

• CRC

• I/O

Status Supply Voltage

• A (system supply)

• B (field supply)

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10.1.1 Evaluating Fieldbus Status

Communication status via the fieldbus is indicated by the top LED group (ON,

TxD, RxD and CRC).

Table 43: Fieldbus Diagnostics – Solution in Event of Error

LED

Status

Explanation Remedy

ON green

OFF

TxD/RxD

Initialization OK

Initialization failed, no function or self-test

-

1. Check the power supply (24 V, 0

V) and the IP configuration. green

OFF

Data is being exchanged via the

RS-232 interface.

No data is being exchanged via the

RS-232 interface.

-

-

CRC red

OFF

Checksum error in the received

MODBUS telegram

Nor error, normal operation

1. Check the serial connection or the interface parameters.

-

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Diagnostics 107

10.1.2 Evaluating Node Status – I/O LED (Blink Code Table)

The communication status between fieldbus coupler/controller and the I/O modules is indicated by the I/O LED.

Table 44: Node Status Diagnostics – Solution in Event of Error

LED Status Meaning Solution

I/O green The fieldbus node is operating correctly. Normal operation. orange flashing red red flashing red cyclical flashing

Start of the firmware.

1 … 2 seconds of rapid flashing indicate start-up.

Coupler/controller hardware defect

Flashing with approx.. 10 Hz indicates the initialization of the internal bus or of a internal bus error.

-

Replace the fieldbus coupler/controller.

Note the following flashing sequence.

Up to three successive flashing sequences indicate internal data bus errors. There are short intervals between the sequences.

Evaluate the flashing sequences based on the following blink code table.

The blinking indicates an error message comprised of an error code and error argument. off

No data cycle on the internal bus. The fieldbus coupler/controller supply is off.

Device boot-up occurs after turning on the power supply. The I/O LED flashes orange.

Then the bus is initialized. This is indicated by flashing red at 10 Hz for

1 … 2 seconds.

After a trouble-free initialization, the I/O LED is green.

In the event of an error, the I/O LED continues to blink red. Blink codes indicate detailed error messages. An error is indicated cyclically by up to 3 flashing sequences.

After elimination of the error, restart the node by turning the power supply of the device off and on again.

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Figure 49: Node Status – I/O LED Signaling

Figure 50: Error Message Coding

Example of a module error:

• The I/O LED starts the error display with the first flashing sequence

(approx. 10 Hz).

• After the first break, the second flashing sequence starts (approx. 1 Hz):

The I/O LED blinks four times.

Error code 4 indicates “data error internal data bus”.

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Diagnostics 109

• After the second break, the third flashing sequence starts (approx. 1 Hz):

The I/O LED blinks twelve times.

Error argument 12 means that the internal data bus is interrupted behind the twelfth I/O module.

The thirteenth I/O module is either defective or has been pulled out of the assembly.

Table 45: Blink Code- Table for the I/O LED Signaling, Error Code 1

Error code 1: “Hardware and configuration error”

Error

Argument

Error Description Solution

-

Invalid check sum in the parameter area of the fieldbus controller.

1. Turn off the power supply for the node.

2. Replace the fieldbus controller.


1

Overflow of the internal buffer memory for the attached I/O modules.

1. Turn off the power for the node.

2. Reduce the number of I/O modules and turn the power supply on again.

3. If the error persists, replace the fieldbus controller.

2

I/O module(s) with unknown data type

1. Determine the faulty I/O module by first turning off the power supply.

2. Plug the end module into the middle of the node.


4. - LED continues to flash? -

Turn off the power supply and plug the end module into the middle of the first half of the node (toward the fieldbus controller).

- LED not flashing? -

Turn off the power and plug the end module into the middle of the second half of the node (away from the fieldbus controller).


6. Repeat the procedure described in step 4 while halving the step size until the faulty I/O module is detected.

7. Replace the faulty I/O module.

8. Inquire about a firmware update for the fieldbus controller.

3

Unknown module type of the

Flash program memory




4

Fault when writing in the Flash program memory.




5

Fault when deleting the Flash memory.




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Table 45: Blink Code- Table for the I/O LED Signaling, Error Code 1

Error code 1: “Hardware and configuration error”

Error

Argument


6

The I/O module configuration after

AUTORESET differs from the configuration determined the last time the fieldbus controller was powered up.

1. Restart the fieldbus controller by turning the power supply off and on.

7

Fault when writing in the serial EEPROM.




8

Invalid hardwarefirmware combination.




9

Invalid check sum in the serial EEPROM.




10

Serial EEPROM initialization error




11

Fault when reading in the serial

EEPROM.




12

Timeout during access on the serial

EEPROM




14

Maximum number of gateway or mailbox modules exceeded

1. Turn off the power for the node.

2. Reduce the number of corresponding modules to a valid number.


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Table 46: Blink Code Table for the I/O LED Signaling, Error Code 2

Error code 2: “Exceeded Process Image”

Error

Argument


1 Not used -

2

Process image is too large.

1. Turn off the power supply of the node.

2. Reduce number of I/O modules.

3. Turn the power supply on.

Diagnostics 111


Error code 3: “Protocol error, internal bus”

Error

Argument


-

Internal data bus communication is faulty, defective module cannot be identified.

- Are passive power supply modules (750-613) located in the node? -

1. Check that these modules are supplied correctly with power.

2. Determine this by the state of the associated status LEDs.

- Are all modules connected correctly or are there any 750-

613 Modules in the node? -

1. Determine the faulty I/O module by turning off the power supply.




Turn off the power supply and plug the end module into the middle of the first half of the node (toward the fieldbus controller).






8. Inquire about a firmware update for the fieldbus controller.

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Error code 4: “Physical error, internal bus”

Error

Argument


-

Internal bus data transmission error or interruption of the internal data bus at the fieldbus controller

1. Turn off the power supply to the node.

2. Plug in an end module behind the fieldbus controller.


4. Observe the error argument signaled.

- Is no error argument indicated by the I/O LED? -


- Is an error argument indicated by the I/O LED? -

5. Identify the faulty I/O module by turning off the power supply.




Turn off the power and plug the end module into the middle of the first half of the node (toward the fieldbus controller).






12. If there is only one I/O module on the fieldbus controller and the LED is flashing, either the I/O module or fieldbus controller is defective. Replace the defective component. n*

Interruption of the internal data bus behind the nth bus module with process data, the maximum supported number is reached, the following modules are no longer supported.

1. Turn off the power supply of the node.

2. Reduce number of I/O modules.


* The number of light pulses (n) indicates the position of the I/O module.

I/O modules without data are not counted (e.g., supply modules without diagnostics)


Error code 5: “Initialization error, internal bus”

Error

Argument

Error Description Solution n*

Error in register communication during internal bus initialization

1. Turn off the power supply to the node.

2. Replace the (n+1) I/O module containing process data.


* The number of light pulses (n) indicates the position of the I/O module.

I/O modules without data are not counted (e.g., supply modules without diagnostics)

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Table 50: Blink Code Table for the 'I/O' LED Signaling, Error Code 7…8

Error code 7…8: -not used-

Error

Argument


- Not used


Error code 9: “CPU Trap error”

Error

Argument


1 Illegal Opcode

2

3

Stack overflow

Stack underflow

Fault in the program sequence.

1. Please contact the I/O Support.

4 NMI

Diagnostics 113

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10.1.3 Evaluating Power Supply Status

The power supply unit of the device has two green LEDs that indicate the status of the power supplies.

LED “A” indicates the 24 V supply of the coupler.

LED “B” or “C” reports the power available on the power jumper contacts for field side power.

Table 52: Power Supply Status Diagnostics – Solution in Event of Error

LED Status Meaning Solution

A

Green

Operating voltage for the system is available.

-

Off No power is available for the system

Check the power supply for the system

(24 V and 0 V).

B or C

Green

Off

The operating voltage for power jumper contacts is available.

No operating voltage is available for the power jumper contacts.

-

Check the power supply for the power jumper contacts (24 V and 0 V).

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Diagnostics 115

10.2 Error Response

10.2.1 Fieldbus Failure

A fieldbus and related link failure are recognized when the set reaction time for the watchdog expires without initiation by the higher-order control system. This may occur, for example, when the Master is switched off, or when there is a disruption in the bus cable. An error at the Master can also trigger a fieldbus failure.

The MODBUS watchdog monitors ongoing MODBUS communication via

MODBUS protocol. A fieldbus failure is signaled by the red I/O LED lighting up, provided the MODBUS watchdog has been configured and activated.

Fieldbus monitoring independent of a certain protocol is possible using the function block 'FBUS_ERROR_INFORMATION' in the library 'Mod_com.lib'.

This checks the physical connection between I/O modules and the fieldbus controller and assumes evaluation of the watchdog register in the control system program. The I/O bus remains operational and the process images are retained.

The control system program can also be processed independently.

FBUS_ERROR_INFORMATION

FBUS_ERROR

ERROR

Figure 51: Function Block for Determining a Fieldbus Failure

'FBUS_ERROR' (BOOL) = FALSE = no fault

= TRUE = Fieldbus failure

'ERROR' (WORD) = 0

= 1

= no fault

= Fieldbus failure

The node can be placed into safe status in the event of a fieldbus failure with the aid of these function block outputs and an appropriately configured control system program.

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Detection of fieldbus failure via the MODBUS protocol:

For detailed information about the watchdog tab, see the section “MODBUS

Functions”; “Watchdog” (behavior in case of fieldbus failure). Protocolindependent detection of loss of fieldbus:

The library 'Mod_com.lib' with function block 'FBUS_ERROR_IN-

FORMATION' is normally included in the setup for the WAGO-I/OPRO . You can integrate the library via register “Resources” at the bottom on the left of the workspace. Click Insert and then Other libraries. The Mod_com.lib is located in folder C:\Programme\

WAGO Software\CoDeSys V2.3\Targets\WAGO\Libraries\32_Bit

10.2.2 Internal Data Bus Failure

I/O LED indicates an internal bus failure.

I/O LED flashed red:

When an internal data bus failure occurs, the fieldbus controller generates an error message (error code and error argument).

An internal data bus failure occurs, for example, if an I/O module is removed.

If the error occurs during operation, the output modules operate as they do during an internal data bus stop.

If the internal data bus error is resolved, the controller starts up after turning the power off and on similar to that of a normal start-up. The process data is transmitted again and the outputs of the node are set accordingly.

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11 Fieldbus Communication

Fieldbus Communication 117

11.1 MODBUS-Functions

11.1.1 General

MODBUS is a non-vendor-specific, open fieldbus standard for a wide range of applications in production and process automation.

The MODBUS protocol is implemented in accordance with the "MODBUS

APPLICATION PROTOCOL SPECIFICATION V1.1b3" and provides the following functions:

• Provision of the process image

• Provision of the fieldbus variables

• Provision of various settings for the fieldbus coupler/controller via the fieldbus


The structure of a datagram is specific for the individual function. Refer to the descriptions of the MODBUS Function codes.

Information Additional information

More information is available on the Internet at: http://www.modbus.org

The MODBUS protocol is essentially based on the following basic data types:

Table 53: Basic Data Types for the MODBUS Protocol

Data Type

Discrete Inputs

Coils

Length

1 bits

1 bits

Description

Digital inputs:

Digital outputs:

Input Register 16 bits Analog inputs:

Holding Register 16 bits Analog outputs:

One or more function codes are defined for every basic data type.

Using these functions, the necessary binary input/output data or analog input/output data and internal variables from the fieldbus node can be set or read out directly.

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Table 54: List of the MODBUS Functions in the Fieldbus Coupler/Controller

Function code Function Access method and description Access to resources

FC1 0x01 Read Coils

FC2 0x02 Read Discrete

Inputs

FC3 0x03 Read Holding

Registers

Reading of several single input bits R: Process image,

PFC variables

Reading of several input bits R: Process image,

PFC variables

FC4 0x04 Read Input

Registers

Reading of several input registers R: Process image,

PFC variables, internal variables,

NOVRAM

Reading of several input registers R: Process image,


NOVRAM

FC5 0x05 Write Single

Coil

FC6 0x06 Write Single

Register

Writing of an individual output bit W: Process image,

PFC variables

Writing of an individual output register

W: Process image,


NOVRAM

FC7 0x07 Read Exception

Status

FC11 0x0B Get Comm

Event Counters

FC15 0x0F Write Multiple

Coils

FC16 0x10 Write Multiple

Registers

Reading of the first 8 input bits

Communication event counter

Writing of several output bits

R: Process image,

PFC variables

R: None

W: Process image,

PFC variables

Writing of several output registers W: Process image,


NOVRAM

FC23 0x17 Read/Write

Multiple

Registers

Reading and writing of several output registers

R/W: Process image,

PFC variables,

NOVRAM

To execute a desired function, specify the respective function code and the address of the selected input or output data.

Note the number system when addressing!

The examples listed use the hexadecimal system (i.e.: 0x000) as their numerical format. Addressing begins with 0. The format and beginning of the addressing may vary according to the software and the control system. All addresses then need to be converted accordingly.

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11.1.2 Using the MODBUS Functions

The graphic overview illustrates the access of a few MODBUS functions to process image data using an example of a fieldbus node.

Note

Figure 52: Using MODBUS Functions for a Fieldbus Coupler/Controller

Use of bit functions should be given priority for binary signals!

It is meaningful to access binary signals using bit functions  . If reading or writing access to binary signals is performed via register functions  , an address shift may occur when other analog input/output modules are operated at the fieldbus coupler/controller.

Note!

Only the 512 binary input and output signals with the lowest values may be addressed using bit functions  . Only register functions  may be used to access digital inputs/outputs beyond this.

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11.1.3 Description of the MODBUS Functions

All MODBUS functions are executed as follows:

1. A MODBUS TCP master (e.g., a PC) makes a request to the WAGO fieldbus node using a specific function code based on the desired operation..

2. The WAGO fieldbus node receives the datagram and then responds to the master with the proper data, which is based on the master’s request.

If the WAGO fieldbus node receives an incorrect request, it sends an error datagram (Exception) to the master.

The exception code contained in the exception has the following meaning:

Table 55: Exception Codes

Exception code Meaning

0x01 Illegal function

0x02

0x03

0x04

Illegal data address

Illegal data value

Slave device failure

0x05

0x06

0x08

0x0A

0x0B

Acknowledge

Server busy

Memory parity error

Gateway path unavailable

Gateway target device failed to respond

The telegram structure for Request, Response and Exception is explained for each function code using examples in the sections that follow.

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11.1.3.1 Function Code FC1 (Read Coils) and FC2 (Read Discrete Inputs)

These functions read out multiple input bits (e.g., digital inputs) and/or output bits

(e.g., digital outputs) and are to be used identically.

Based on the tables for MODBUS register mapping, these bit functions can be used to address only the 512 lowest value input or output bits for the process image. As the maximum number of I/O modules (64) enables a node to be set up with up to 1024 digital signals, it may be necessary to also address digital inputs/

-outputs beyond this. Register functions FC3 and FC4 must be used for this.

Structure of the request

The request determines the start address and the number of bits to be read.

Example: A request of which bit 0 to bit 7 is to be read.

Table 56: Request Structure for Function Codes FC1 and FC2

Byte

Byte 0, 1

Byte 2, 3

Byte 4, 5

Byte 6

Byte 7

Byte 8, 9

Byte 10, 11

Field name

Transaction identifier

Protocol identifier

Length field

Unit identifier

Example

0x0000

0x0000

0x0006

0x01 not used

MODBUS function code 0x01 or 0x02

Starting address 0x0000

Bit count 0x0008

Structure of the response

The current values of the queried bits are entered into the data field. Value 1 =

ON, value 0 = OFF. The least significant bit of the first data byte contains the first bit of the request. The other bits follow in ascending order. If the number of inputs is not a multiple of 8, the remaining bits of the last data byte are filled with zeros.

Table 57: Response Structure for Function Codes FC1 and FC2

Byte

...

Byte 7

Field name

MODBUS function code

Example

0x01 or 0x02

Byte 8

Byte 9

Byte count

Bit values

0x01

0x12

The status of inputs 7 to 0 is indicated as byte value 0x12 or binary 0001 0010.

Input 7 is the bit with the highest value, input 0 with the lowest value for this byte.

Assignment is made from 7 to 0 as follows:

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Table 58: Input Assignments

OFF OFF OFF ON OFF OFF ON OFF

Bit 0 0 0 1 0 0 1 0

Coil 7 6 5 4 3 2 1 0

Structure of the exception

Table 59: Exception Structure for Function Codes FC1 and FC2

Byte

...

Byte 7

Field name

Byte 8

Example

MODBUS function code 0x81 (for FC1) or 0x82

(for FC2)

Exception code 0x02

11.1.3.2 Function Code FC3 (Read Holding Registers) and FC4 (Read Input

Registers)

These functions read out multiple input words (input registers) and/or output words (output registers) and are to be used indentically.


The request determines the address of the start word (start register) and the number of registers to be read.

Example: request to read registers 0 and 1.

Table 60: Request Structure for Function Codes FC3 and FC4

Byte

Byte 0, 1

Byte 2, 3

Byte 4, 5

Byte 6

Byte 7

Byte 8, 9

Byte 10, 11

Field name


Protocol identifier

Length field

Unit identifier

Example

0x0000

0x0000

0x0006

0x01 not used

MODBUS function code 0x03 or 0x04


Word count 0x0002

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The register data of the response is entered into the registers (2 bytes per register).

The first byte contains the more significant bits, the second byte contains the less significant bits.

Table 61: Response Structure for Function Codes FC3 and FC4

Byte

...

Byte 7

Byte 8

Byte 9, 10

Byte 11, 12

Field name


Byte count

Value register 0

Value register 1

Example

0x03 or 0x04

0x04

0x1234

0x2345

The response shows that register 0 contains the value 0x1234 and register 1 contains the value 0x2345.


Table 62: Exception Structure for Function Codes FC3 and FC4

Byte

...

Byte 7

Byte 8

Field name

Exception code

Example

MODBUS function code 0x83 (for FC3) or 0x84

0x02

11.1.3.3 Function Code FC5 (Write Single Coil)

This function writes a digital output bit. Value 0xFF00 sets the output to TRUE, value 0x0000 to FALSE.


The request determines the address of the output bit.

Example: Setting the second output bit (address 1).

Table 63: Request Structure for Function Code FC5

Byte

Byte 0, 1

Byte 2, 3

Byte 4, 5

Byte 6

Byte 7

Field name


Protocol identifier

Length field

Example

0x0000

0x0000

0x0006

Unit identifier 0x01 not used

MODBUS function code 0x05

Byte 8, 9

Byte 10

Byte 11

Output address

ON/OFF

0x0001

0xFF

0x00

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Table 64: Response Structure for Function Code FC5

Byte

...

Byte 7

Field name Example


Byte 8, 9

Byte 10

Byte 11

Output address

Value

0x0001

0xFF

0x00


Table 65: Exception Structure for Function Code FC5

Byte

...

Byte 7

Byte 8



Exception code 0x02 or 0x03

11.1.3.4 Function Code FC6 (Write Single Register)

This function writes a value into a single output register.


The request determines the address of the first output word to be set. The value to be set is determined in the request data field.

Example: Setting of the second output channel to 0x1234.


Byte

Byte 0, 1

Byte 2, 3

Byte 4, 5

Byte 6

Byte 7

Byte 8, 9

Byte 10, 11

Field name


Protocol identifier

Example

0x0000

0x0000

Length field

Unit identifier

0x0006

0x01 not used


Register address 0x0001

Register value 0x1234

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The response is an echo of the request.



Byte

...

Byte 7

Field name


Example

0x06

Byte 8, 9

Byte 10, 11

Register address

Register value

0x0001

0x1234



Byte

...

Byte 7

Byte 8



Exception code 0x02

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11.1.3.5 Function Code FC11 (Get Comm Event Counter)

This function returns a status word and a single event counter from the communication register of the fieldbus coupler/controller. The higher level control system can use this counter to determine whether the fieldbus coupler/controller has processed the messages properly.

Every time a message is processed successfully, the counter counts up.

Error messages or counter queries are not counted.



Byte

Byte 0, 1

Byte 2, 3

Byte 4, 5

Byte 6

Byte 7

Field name


Protocol identifier

Length field

Example

0x0000

0x0000

0x0002


MODBUS function code 0x0B


The response contains a 2-byte status word and a 2-byte event counter.

The status word consists of zeros.


Byte

...

Byte 7

Field name


Example

0x0B

Byte 8, 9

Byte 10, 11

Status

Event count

0x0000

0x0003

The event counter shows that 3 (0x0003) events were counted.



Byte

...

Byte 7

Byte 8


MODBUS function code 0x8B

Exception code 0x02

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11.1.3.6 Function Code FC15 (Write Multiple Coils)


This function is used to set multiple output bits to 1 or 0.


The request determines the start address and the number of bits to be set. The required state (1 or 0) of the bit is determined by the content of the request data field.

In this example, 16 bits are set, starting with address 0. The request contains 2 bytes with the value 0xA5F0, i.e. 1010 0101 1111 0000 binary.

The first byte assigns the 0xA5 value to address 7 to 0, with 0 being the least significant bit. The next byte assigns 0xF0 to address 15 to 8, with 8 being the least significant bit.


Byte

Byte 0, 1

Byte 2, 3

Byte 4, 5

Byte 6

Byte 7

Byte 8, 9

Byte 10, 11

Field name


Protocol identifier

Length field

Unit identifier

Example

0x0000

0x0000

0x0009

0x01 not used

MODBUS function code 0x0F


Bit count 0x0010

Byte 12

Byte 13

Byte 14

Byte count

Data byte1

Data byte2

0x02

0xA5

0xF0



Byte

...

Byte 7

Byte 8, 9

Byte 10, 11




Bit count 0x0010


Table 74: Exception Structure for Function code FC15

Byte

...

Byte 7

Byte 8



Exception code 0x02

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11.1.3.7 Function Code FC16 (Write Multiple Registers)

This function writes values to a number of output registers.


The request determines the start address and the number of registers to be set.

Two bytes of data per register are transmitted.

Example: The data in the registers 0 and 1 is set.


Byte

Byte 0, 1

Byte 2, 3

Byte 4, 5

Byte 6

Byte 7

Byte 8, 9

Field name


Protocol identifier

Length field

Example

0x0000

0x0000

0x000B




Byte 10, 11

Byte 12

Byte 13, 14

Byte 15, 16

Word count

Byte count

Register value 1

Register value 2

0x0002

0x04

0x1234

0x2345



Byte

...

Byte 7

Byte 8, 9

Byte 10, 11

Field name


Starting address

Word count

Example

0x10

0x0000

0x0002



Byte

...

Byte 7

Byte 8

Field name

Exception code

Example


0x02

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11.1.3.8 Function Code FC23 (Read/Write Multiple Registers)

This function writes values to multiple output registers and reads values from multiple input and/or output registers. Write access is executed before read access.


The request message determines the start address and the number of registers to be set. Two bytes of data per register are transmitted.

Example: The data in the register 3 is set to 0x0123.

Example: The values 0x0004 and 0x5678 are read from registers 0 and 1.


Byte

Byte 0, 1

Byte 2, 3

Byte 4, 5

Byte 6

Byte 7

Byte 8, 9

Byte 10, 11

Byte 12, 13

Byte 14, 15

Field name


Protocol identifier

Length field

Unit identifier


Starting address for read

Word count for read

Starting address for write

Word count for write

Example

0x0000

0x0000

0x000F

0x01 not used

0x17

0x0000

0x0002

0x0003

0x0001

Byte 16 Byte count (2 x word count for write) 0x02

Byte 17...(B+16) Register values (B = Byte count) 0x0123



Byte

...

Field name

Byte 7

Byte 8


Byte count (2 x word count for read)

Byte 9...(B+1) Register values (B = Byte count)



Byte

...

Field name

Byte 7

Byte 8


Exception code

Example

0x17

0x04

0x0004 or 0x5678

Example

0x97

0x02

Manual

Version 1.0.0



11.1.4 MODBUS Register Mapping

The following tables display the MODBUS addressing and the corresponding

IEC61131 addressing for the process image, the PFC variables, the NOVRAM data, and the internal variables is represented.

Via the register services the states of the complex and digital I/O modules can be determined or changed.

Read register access (with FC3 and FC4)

Table 81: Read Register Access (with FC3 and FC4)

MODBUS Address

[dez] [hex]

IEC-61131-

Address

Memory area

0...255 0x0000...0x00FF %IW0...%IW255 Physical Input Area

256...511 0x0100...0x01FF %QW256...%QW511 PFC-OUT-Area

Volatile PLC output variables

512...767 0x0200 ...0x02FF %QW0...%QW255 Physical Output Area

768...1023 0x0300 ...0x03FF %IW256...%IW511 PFC-IN-Area

Volatile PLC input variables

1024...4095 0x0400 ...0x0FFF

4096...12287 0x1000 ...0x2FFF

-

-

MODBUS Exception: “Illegal data address”

Configuration register (see Section

“Configuration Register”)

12288...16383 0x3000...0x3FFF %MW0...%MW4095 NOVRAM 8 kB retain memory

16384...65535 0x4000...0xFFFF - MODBUS Exception: “Illegal data address”

Register (Word) Access Writing (with FC6 and FC16)

Table 82: Register (Word) Access Writing (with FC6 and FC16)

MODBUS address IEC 61131 Memory range

[dec] [hex] address

0...255 0x0000...0x00FF %QW0...%QW255 Physical output area

256...511 0x0100...0x01FF %IW256...%IW511 PFC IN area

Volatile PFC input variables

512...767 0x0200...0x02FF %QW0...%QW255 Physical output area

768...1023 0x0300...0x03FF %IW256...%IW511 PFC IN area


1024...4095 0x0400...0x0FFF - MODBUS exception:

“Illegal data address”

4096...8191 0x1000...0x1FFF -

8192...12287 0x2000...0x2FFF -

Configuration register (see following chapter “Configuration Functions”)

MODBUS exception:


12288...16383 0x3000...0x3FFF %MW0...%MW4095 NOVRAM

8 kB retain memory

16384...65535 0x4000...0xFFFF - MODBUS exception:


Manual

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WAGO-I/O-SYSTEM 750



The digital MODBUS services (coil services) are bit accesses, with which only the states of digital I/O modules can be determined or changed. Complex I/O modules are not attainable with these services and so they are ignored. Because of this the addressing of the digital channels begins again with 0, so that the

MODBUS address is always identical to the channel number, (i.e. the digital input no. 47 has the MODBUS address “46”).

Read bit access (with FC1 and FC2)

Table 83: Read bit access (with FC1 and FC2)

MODBUS Address

[dez] [hex]

Memory area Description

0...511 0x0000...0x01FF Physical Input Area 512 digital inputs

512...1023 0x0200...0x03FF Physical Output Area 512 digital outputs

1024...4095 0x0400...0x0FFF - MODBUS Exception:


4096...8191 0x1000...0x1FFF %QX256.0...%QX511.15 PFC-OUT-Area

Volatile PLC output variables

8192...12287 0x2000...0x2FFF %IX256.0...%IX511.15 PFC-IN-Area

Volatile PLC input variables

12288...65535 0x3000...0xFFFF %MX0.0...%MX3327.15 NOVRAM

Retain memory

Bit Access Writing (with FC5 and FC15)

Table 84: Bit access writing (with FC5 and FC15)

MODBUS address

[dec] [hex]

Memory range Description

0...511 0x0000...0x01FF Physical output area First 512 digital outputs

512...1023 0x0200...0x03FF Physical output area First 512 digital outputs

1024...4095 0x0400...0x0FFF - MODBUS exception:


4096...8191 0x1000...0x1FFF %IX256.0...%IX511.15 PFC IN area


8192...12287 0x2000...0x2FFF %IX256.0...%IX511.15 PFC IN area


12288...65535 0x3000...0xFFFF %MX0.0...%MX3327.15 NOVRAM

Retain memory

Manual

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Table 85: MODBUS Registers

Register address

Access Length

(word)

0x1000 R/W 1

Description

Watchdog time read/write

0x1001 R/W 1 Watchdog coding mask 1…16

0x1002 R/W 1 Watchdog coding mask 17…32

0x1003 R/W 1 Watchdog

0x1004 R 1

0x1005 R/W 1

0x1021 R

0x1022 R

0x1023 R

0x1024 R

Minimum trigger time

Watchdog stop (Write sequence 0xAAAA, 0x5555)

0x1006 R 1 Watchdog

0x1007 R/W 1 Restart watchdog (Write sequence 0x1)

0x1008 R/W 1

0x1020 R

Stop watchdog (Write sequence 0x55AA or 0xAA55)

1…2 LED error code

1 LED error argument

1…4 Number of analog output data in the process image (in bits)

1…3 Number of analog input data in the process image (in bits)

1…2 Number of digital output data in the process image (in bits)

0x1025 R 1…4 Number of digital input data in the process image (in bits)

0x1026 R

0x1027 R/W 1 Modbus

0x1028 R 9 Configuration of the communication interface

0x1040 R/W

0x1051 R 3

Process data communication channel

Diagnosis of the connected I/O modules

0x2000 R 1 Constant

0x2001 R 1 Constant

0x2002 R 1 Constant

0x2003 R 1 Constant

0x2004 R 1 Constant

0x2005 R 1 Constant

0x2006 R 1 Constant

0x2007 R 1 Constant

0x2008 R 1 Constant

0x2010 R 1 Firmware

0x2011 R 1 Series

0x2012 R

0x2013 R

1

1

Fieldbus coupler/controller code

Firmware version major revision

0x2014 R 1 Firmware version minor revision

0x2020 R 32 Short controller

0x2021 R

0x2022 R

16

16

Compile time of the firmware

Compile date of the firmware

Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750



11.1.5.1 Accessing Register Values

You can use any MODBUS application to access (read from or write to) register values. Both commercial (e.g., "Modscan") and free programs (from http://www.modbus.org/tech.php

) are available.

The following sections describe how to access both the registers and their values.

11.1.5.2 Watchdog Registers

The watchdog monitors the data transfer between the fieldbus master and the controller. Every time the controller receives a specific request (as define in the watchdog setup registers) from the master, the watchdog timer in the controller resets.

In the case of fault free communication, the watchdog timer does not reach its end value. After each successful data transfer, the timer is reset.

If the watchdog times out, a fieldbus failure has occurred. In this case, the fieldbus controller answers all following MODBUS TCP/IP requests with the exception code 0x0004 (Slave Device Failure).

In the controller special registers are used to setup the watchdog by the master

(Register addresses 0x1000 to 0x1008).

By default, the watchdog is not enabled when you turn the controller on. To activate it, the first step is to set/verify the desired time-out value of the Watchdog

Time register (0x1000). Second, the function code mask must be specified in the mask register (0x1001), which defines the function code(s) that will reset the timer for the first time. Finally, the Watchdog-Trigger register (0x1003) or the register 0x1007 must be changed to a non-zero value to start the timer subsequently.

Reading the Minimum Trigger time (Register 0x1004) reveals whether a watchdog fault occurred. If this time value is 0, a fieldbus failure is assumed. The timer of watchdog can manually be reset, if it is not timed out, by writing a value of 0x1 to the register 0x1003 or to the Restart Watchdog register 0x1007.

After the watchdog is started, it can be stopped by the user via the Watchdog Stop register (0x1005) or the Simply Stop Watchdog register (0x1008).

The watchdog registers can be addressed in the same way as described with the

MODBUS read and write function codes. Specify the respective register address in place of the reference number.

Manual

Version 1.0.0



Table 86: Register Address 0x1000

Register address 0x1000 (4096 dec

)

Value Watchdog time, WS_TIME

Access

Default

Description

Read/write

0x0000

This register stores the watchdog timeout value. However, a non zero value must be stored in this register before the watchdog can be triggered. The time value is stored in multiples of 100ms (e.g., 0x0009 is .9 seconds). It is not possible to modify this value while the watchdog is running.

There is no code, by which the current data value can be written again, while the watchdog is active.

Table 87: Register Value 0x1001

Register address 0x1001 (4097 dez

)

Value Watchdog function coding screen, function code 1...16, WDFCM_1_16

Access

Default

Description

Read/write

0xFFFF

Use this screen to set the function codes to trigger the watchdog function. With a

“1” on the bit position described below, the function code can be selected:

FC 1 Bit 0

FC 2 Bit 1

FC 3 Bit 2

FC 4 Bit 3

FC 5 Bit 4

...

FC 16 Bit 15

The registry value can only be modified if the watchdog is not active. The bit pattern saved in the registry specifies, which function codes trigger the watchdog.

Some function codes are not supported. Values can be entered for these, but the watchdog does not start even if another MODBUS device sends it.



)

Value Watchdog function coding screen, function code 17...32, WD_FCM_17_32

Access

Default

Description

Read/write

0xFFFF

The same function as before, but with function codes 17 to 32.

FC 17 Bit 0

FC 18 Bit 1

...

FC 32 Bit 15

These codes are not supported. Therefore, this register should be left at the default value. The registry value can only be modified if the watchdog is not active. There is no exception code by which the current data value can be written again while the watchdog is active.

Manual

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WAGO-I/O-SYSTEM 750





)

Value Watchdog trigger, WD_TRIGGER

Access

Default

Description

Read/write

0x0000

This register is used for an alternative trigger method. The watchdog is triggered by writing different values to this register. Successive values must differ in size.

The watchdog starts when values not equal to zero are written after a PowerOn.

The written value may not be equal to the previously written value for a restart!

A watchdog error is reset and it is again possible to write process data.



)

Value Minimum current trigger time, WD_AC_TRG_TIME

Access Read

Default 0xFFFF

Description This register saves the current smallest watchdog trigger time. When the watchdog is triggered, the saved value is compared to the current value. If the current value is smaller than the saved value, it is replaced by the current value.

The unit is 100 ms/digit. The saved value is modified by writing new values. This has no effect on the watchdog. The value 0x000 is not permitted.



)

Value Stop watchdog, WD_AC_STOP_MASK

Access

Default

Description

Read/write

0x0000

If the value 0xAAAA followed by the value 0x5555 is written to this register, the watchdog stops. The watchdog error response is blocked. A watchdog error is reset and it is again possible to write to the process data.



)

Value While watchdog is running, WD_RUNNING

Access Read

Default 0x0000

Description Current watchdog status at 0x0000: Watchdog inactive at 0x0001: Watchdog active at 0x0002: Watchdog timed out



)

Value Restart watchdog, WD_RESTART

Access Read/write

Default

Description

0x0001

Writing 0x1 to the register starts the watchdog again.

If the watchdog was stopped before the overflow, it is not started again.

Manual

Version 1.0.0





)

Value Just pause watchdog, WD_AC_STOP_SIMPLE

Access

Default

Description

Read/write

0x0000

By writing the values 0x0AA55 or 0x55AA, the watchdog is paused if active.

The watchdog error response is temporarily disabled. An existing watchdog error is reset and it is again possible to write to the watchdog register.

The length of each register is 1 word; i.e., with each access only one word can be written or read. Following are two examples of how to set the value for a time overrun:

Setting the watchdog for a timeout of more than 1 second:

1. Write 0x000A in the register for time overrun (0x1000).

Register 0x1000 works with a multiple of 100 ms;

1 s = 1000 ms; 1000 ms / 100 ms = 10 dec

= A hex

)

2. Use the function code 5 to write 0x0010 (=2

(5-1)

) in the coding mask

(register 0x1001).

Table 95: Starting Watchdog

FC FC16 FC15 FC14 FC13 FC12 FC11 FC10 FC9 FC8 FC7 FC6 FC5 FC4 FC3 FC2 FC1

Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 bin 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 hex 0 0 1 0

Function code 5 (writing a digital output bit) continuously triggers the watchdog to restart the watchdog timer again and again within the specified time. If time between requests exceeds 1 second, a watchdog timeout error occurs.

3. To stop the watchdog, write the value 0xAA55 or 0x55AA into 0x1008

(Simply Stop Watchdog register, WD_AC_STOP_SIMPLE).

Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750



Setting the watchdog for a timeout of 10 minutes or more:

1. Write 0x1770 (= 10*60*1000 ms / 100 ms) in the register for time overrun

(0x1000).

(Register 0x1000 works with a multiple of 100 ms;

10 min = 600,000 ms; 600,000 ms / 100 ms = 6000dec = 1770hex)

2. Write 0x0001 in the watchdog trigger register (0x1003) to start the watchdog.

3. Write different values (e.g., counter values 0x0000, 0x0001) in the watchdog to trigger register (0x1003).

Values following each other must differ in size. Writing of a value not equal to zero starts the watchdog. Watchdog faults are reset and writing process data is possible again.

4. To stop the watchdog, write the value 0xAA55 or 0x55AA into 0x1008

(Simply Stop Watchdog register, WD_AC_STOP_SIMPLE).

11.1.5.3 Diagnostic Registers

The following registers can be read to determine errors in the node:



)

Value LedErrCode

Access

Description

Read

Declaration of the error code



)

Value LedErrArg

Access

Description

Read

Declaration of the error argument

Manual

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11.1.5.4 Configuration Registers

The following registers contain configuration information of the connected modules:



)

Value CnfLen.AnalogOut

Access

Description

Read

Number of word-based outputs registers in the process image in bits (divide by

16 to get the total number of analog words)



)

Value CnfLen.AnalogInp

Access

Description

Read

Number of word-based inputs registers in the process image in bits (divide by 16 to get the total number of analog words)



)

Value CnfLen.DigitalOut

Access Read

Description Number of digital output bits in the process image



)

Value CnfLen.DigitalInp

Access

Description

Read

Number of digital input bits in the process image



)

Value Current node address

Access

Description

Read

The address is read when power supply is switched on.



)

Value MODBUS configuration

Access

Description

Read

D0 – D3:

D4 – D5:

D6:

D7 – D9:

D10:

D11:

D12:

D13:

Baud rate

Byte Frame

Data Length 8/7 Bits

End of Frame Time

RTU/ASCII Mode

Error Check

Watchdog fbconfig.lib

Manual

Version 1.0.0

ki

WAGO-I/O-SYSTEM 750





)

Value Configuration of the communication interface

Access

Description

Read/write

The low byte corresponds to the required station address.

The high byte is the binary component for the required station address.

High-byte

0x00

*)

0xFF

Low-byte

0x00

0x00

Station address

Determined by rotary encoder switch

0

0xFE

0xFD

0x01

0x02

1

2

…

0x02

0x01

0x00

*)

Default setting

…

0xFD

0xFE

0xFF

…

253

254 illegal



)

Value Process data communication channel

Access

Description

Read/write

This register has the function of an interface to WAGO-I/OPRO CAA, e.g. for the debugging



)

Value Diagnosis of the connected I/O modules at the MODBUS/RTU fieldbus

Access Read

Description Diagnosis of the connected I/O modules, length 3 words

Word 1: Number of the module

Word 2: Number of the channel

Word 3: Diagnosis

Manual

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11.1.5.5 Firmware Information Registers

The following registers contain information on the firmware of the fieldbus coupler/controller:



) with a word count of 1

Value Revision, INFO_REVISION

Access

Description

Read

Firmware index, e.g. 0005 for version 5




Value Series code, INFO_SERIES

Access

Description

Read

WAGO serial number, e.g. 0750 for WAGO-I/O-SYSTEM 750




Value Order number, INFO_ITEM

Access

Description

Read

First part of WAGO order number, e.g. 841 for the controller 750-841 or 341 for the coupler 750-341 etc.




Value Major sub item code, INFO_MAJOR

Access

Description

Read

Firmware version Major Revision




Value Minor sub item code, INFO_MINOR

Access

Description

Read

Firmware version Minor Revision



) with a word count of up to 16

Value Description, INFO_DESCRIPTION

Access

Description

Read

Information on the controller, 16 words

Manual

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WAGO-I/O-SYSTEM 750






Value Description, INFO_DESCRIPTION

Access

Description

Read

Time of the firmware version, 8 words




Value Description, INFO_DATE

Access

Description

Read

Date of the firmware version, 8 words

11.1.5.6 Constant Registers

The following registers contain constants, which can be used to test communication with the master:



)

Value Zero, GP_ZERO

Access

Description

Read

Constant with zeros



)

Value Ones, GP_ONES

Access Read

Description Constant with ones

• –1 if this is declared as "signed int"

• MAXVALUE if it is declared as "unsigned int"



)

Value 1,2,3,4, GP_1234

Access Read

Description This constant value is used to test the Intel/Motorola format specifier. If the master reads a value of 0x1234, then with Intel format is selected – this is the correct format. If 0x3412 appears, Motorola format is selected.



)

Value Mask 1, GP_AAAA

Access

Description

Read

This constant is used to verify that all bits are accessible to the fieldbus master.

This will be used together with register 0x2004.

Manual

Version 1.0.0





)

Value Mask 1, GP_5555

Access

Description

Read

This constant is used to verify that all bits are accessible to the fieldbus master.

This will be used together with register 0x2003.



)

Value Maximum positive number, GP_MAX_POS

Access

Description

Read

Constant in order to control arithmetic.



)

Value Maximum negative number, GP_MAX_NEG

Access

Description

Read

Constant in order to control arithmetic



)

Value Maximum half positive number, GP_HALF_POS

Access

Description

Read




)

Value Maximum half negative number, GP_HALF_NEG

Access

Description

Read


Table 124: Register Address 0x3000 to 0x3FFF

Register address 0x3000 to 0x3FFF (12288 dec

to 16383 dec

)

Value Retain range

Access Read/write

Description These registers can be accessed as the flag/retain range

Manual

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I/O Modules 143

12 I/O Modules

12.1 Overview

For modular applications with the WAGO-I/O-SYSTEM 750/753, different types of I/O modules are available

• Digital Input Modules

• Digital Output Modules

• Analog Input Modules

• Analog Output Modules

• Specialty Modules

• System Modules

For detailed information on the I/O modules and the module variations, refer to the manuals for the I/O modules.

You will find these manuals on the WAGO web pages under www.wago.com

.

More Information about the WAGO-I/O-SYSTEM

Current information on the modular WAGO-I/O-SYSTEM is available in the

Internet under: www.wago.com

.

Manual

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


12.2 Structure of Process Data for MODBUS RTU

The process image uses a byte structure (without word alignment) for the

MODBUS RTU fieldbus coupler/controller. The internal mapping method for data greater than one byte conforms to Intel formats.

The following section describes the representation for WAGO-I/O SYSTEM 750 and 753 Series I/O modules in the process image of the MODBUS RTU fieldbus coupler/controller, as well as the configuration of the process values.

Equipment damage due to incorrect address!

To prevent any damage to the device in the field, you must always take the process data for all previous byte or bit-oriented I/O modules into account when addressing an I/O module at any position in the fieldbus node.

12.2.1 Digital Input Modules

Digital input modules output one bit as the process value per signal channel that indicates the status of the respective channel. Bits that represent input process values are entered in the input process image.

Digital input modules with diagnostics have one or more diagnostic bits available in addition to the process data. The diagnostic bits are evaluated by the fieldbus coupler/controller.

If analog input modules are present in the node, the digital input/output module data is grouped in bytes and added to the analog input module data in the input process image.

1-Channel Digital Input Modules with Diagnostics

750-435

Table 125: 1-Channel Digital Input Modules with Status

Input process image

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

Status bit

S 1

Bit 0

Data bit

DI 1

Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750


2-Channel Digital Input Modules

I/O Modules 145

750-400, -401, -405, -406, -410, -411, -412, -425, -427, -438, (and all variants),

753-400, -401, -405, -406, -410, -411, -412, -425, -427

Table 126: 2-Channel Digital Input Modules



Data bit

DI 2

Channel 2

Bit 0

Data bit

DI 1

Channel 1

2-Channel Digital Input Modules with Diagnostics

750-400, -401, -410, -411, -419, -421, -424, -425

753-400, -401, -410, -411, -421, -424, -425

Table 127: 2-Channel Digital Input Modules with Diagnostics



Data bit

DI 2

Channel 2

Bit 0

Data bit

DI 1

Channel 1

2-Channel Digital Input Modules with Diagnostics and Output Data

750-418, -419, -421

753-418, -421

In addition to process values in the input process image, the digital input module also provides 4 bits of data in the output process image.

Table 128: 2-channel digital input modules with diagnostics and output data


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

Data bit

DI 2

Channel 2

Data bit

DI 1

Channel 1

Output process image

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2

Acknowledge Acknowledge ment bit Q 2

Channel 2 ment bit Q 1

Channel 1

Bit 1

0

Bit 0

0

Manual

Version 1.0.0




750-402, -403, -408, -409, -414, -415, -422, -423, -428, -432, -433

753-402, -403, -408, -409, -415, -422, -423, -428, -432, -433, -440

Table 129: 4-channel digital input modules


Bit 7 Bit 6 Bit 5 Bit 4 Bit 3

Data bit

DI 4

Channel 4

Bit 2

Data bit

DI 3

Channel 3

Bit 1

Data bit

DI 2

Channel 2

Bit 0

Data bit

DI 1

Channel 1


750-430, -431, -436, -437

753-430, -431, -434



Bit 7 Bit 6

Data bit

DI 8

Channel 8

Data bit

DI 7

Channel 7

Bit 5

Data bit

DI 6

Channel 6

Bit 4

Data bit

DI 5

Channel 5

Bit 3

Data bit

DI 4

Channel 4

Bit 2

Data bit

DI 3

Channel 3

Bit 1

Data bit

DI 2

Channel 2

Bit 0

Data bit

DI 1

Channel 1


750-1400, -1402, -1405, -1406, -1407



Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

Data bit

Data bit

Data bit

Data bit

Data bit

Data bit

Data bit

Data bit

DI 16 DI 15 DI 14 DI 13 DI 12 DI 11 DI 10 DI 9

Data bit

DI 8

Data bit

DI 7

Data bit

DI 6

Data bit

DI 5

Data bit

DI 4

Data bit

DI 3

Data bit

DI 2

Data bit

DI 1

Chann Chan Chan Chan Chan Chan Chann el 16 nel 15 nel 14 nel 13 nel 12 nel 11 el 10

Chan nel 9

Chan nel 8

Chan nel 7

Chan nel 6

Chan nel 5

Chan nel 4

Chan nel 3

Chan nel 2

Chan nel 1

12.2.2 Digital Output Modules

The digital output modules contain one bit as the process value per channel that indicates the status of the respective channel. These bits are mapped into the output process image.

Digital output modules with diagnostics have one or more diagnostic bits available. The diagnostic bits are evaluated by the fieldbus coupler/controller. In the event of a diagnostic message, the fieldbus coupler enters the state of the diagnostic bit in the diagnostic status word. The entries in the diagnostic status word are made channel-specific.

Manual

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WAGO-I/O-SYSTEM 750


I/O Modules 147

If analog output modules are in the node, the data for the digital input/output modules is always grouped in bytes and added after the analog output data in the output process image.

1-Channel Digital Output Modules with Input Data

750-523

In addition to the process value bit in the output process image, the digital output modules also provides 1 bit that is represented in the input process image. This status image shows “Manual operation”.

Table 132: 1-Channel Digital Output Modules with Input Data





Bit 2

Bit 2

Bit 1 not used

Bit 0

Status bit

"Manual operation"

Bit 1 not used

Bit 0

Controls

DO 1

Channel 1

2-Channel Digital Output Modules

750-501, -502, -509, -512, -513, -514, -517, -535, (and all variants),

753-501, -502, -509, -512, -513, -514, -517

Table 133: 2-Channel Digital Output Modules


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

Controls

DO 2

Channel 2

Bit 0

Controls

DO 1

Channel 1


750-507 (-508), -522,

753-507

Table 134: 2-Channel Digital Output Modules with Input Data



Diag. bit S2 Diag. bit S1

Channel 2 Channel 1

Manual

Version 1.0.0

148 I/O Modules


Bit 7 Bit 6

WAGO-I/O-SYSTEM 750



Controls

DO 2

Channel 2

Bit 0

Controls

DO 1

Channel 1

750-506,

753-506

In addition to the 4-bit process values in the output process image, the 750-506 and 753-506 digital input modules provide 4 bits of data in the input process image. A diagnostic bit for each output channel indicates an overload, a short circuit or a wire break via a 2-bit error code.

Table 135: 4-Channel Digital Output Modules 75x-506 with Input Data



Diag. bit S3 Diag. bit S2 Diag. bit S1 Diag. bit S0

Channel 2 Channel 2 Channel 1 Channel 1


Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 not used not used

Bit 1

Controls

DO 2

Channel 2

Bit 0

Controls

DO 1

Channel 1


750-504, -516, -519, -531

753-504, -516, -531, -540




Controls

DO 4

Channel 4

Bit 2

Controls

DO 3

Channel 3

Bit 1

Controls

DO 2

Channel 2

Bit 0

Controls DO

1

Channel 1


750-532

In addition to the 4-bit process values in the output process image, the 750-532 digital output modules provide 4 bits of data in the input process image. A diagnostic bit for each output channel indicates an overload, short circuit or wire break.

Manual

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I/O Modules 149

Table 137: 4-Channel Digital Output Modules 750-532 with Input Data



Diag. bit S3 Diag. bit S2 Diag. bit S1 Diag. bit S0

Channel 4 Channel 3 Channel 2 Channel 1

Diag. bit S = '0' no error

Diag. bit S = '1' wire break, short circuit or overload



Controls

DO 4

Channel 4

Bit 2

Controls

DO 3

Channel 3

Bit 1

Controls

DO 2

Channel 2

Bit 0

Controls

DO 1

Channel 1


750-530, -536

753-530, -534



Bit 7 Bit 6

Controls

DO 8

Channel 8

Controls

DO 7

Channel 7

Bit 5

Controls

DO 6

Channel 6

Bit 4

Controls

DO 5

Channel 5

Bit 3

Controls

DO 4

Channel 4

Bit 2

Controls

DO 3

Channel 3

Bit 1 Bit 0

Controls

DO 2

Channel 2

Controls DO

1

Channel 1


750-537

In addition to the 8-bit process values in the output process image, the digital output modules provide 8 bits of data in the input process image. A diagnostic bit for each output channel indicates an overload, short circuit or wire break.

Table 139: 4-Channel Digital Output Modules 750-537 with Input Data



Diag. bit

S7

Channel 8

Diag. bit S6 Diag. bit S5

Channel 7 Channel 6

Diag. bit S4 Diag. bit S3 Diag. bit S2 Diag. bit S1 Diag. bit S0

Channel 5 Channel 4 Channel 3 Channel 2 Channel 1

Diag. bit S = '0' no error

Diag. bit S = '1' wire break, short circuit or overload


Bit 7 Bit 6

Controls

DO 8

Channel 8

Controls

DO 7

Channel 7

Bit 5

Controls

DO 6

Channel 6

Bit 4

Controls

DO 5

Channel 5

Bit 3

Controls

DO 4

Channel 4

Bit 2

Controls

DO 3

Channel 3

Bit 1

Controls

DO 2

Channel 2

Bit 0

Controls

DO 1

Channel 1

Manual

Version 1.0.0




750-1500, -1501, -1504, -1505



Bit 15

Bit

14

Bit

13

Bit

12

Bit

11

Bit

10

Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

Control s

Control Control Control Control Control Control Control Control Control Control Control Control Control Control Control s s DO s s s s s s s s s s s s s

DO 16 DO 15 14 DO 13 DO 12 DO 11 DO 10 DO 9 DO 8 DO 7 DO 6 DO 5 DO 4 DO 3 DO 2 DO 1

Channel Channe Channe Channe Channe Channe Channel Channe Channe Channe Channe Channe Channe Channe Channe Channe

16 l 15 l 14 l 13 l 12 l 11 10 l 9 l 8 l 7 l 6 l 5 l 4 l 3 l 2 l 1

8-Channel Digital Input/Output Modules

750-1502, -1506

The digital input/output modules provide 8-bit process values in the input and output process image.

Table 141: 8-Channel Digital Input/Output Modules


Bit 7

Data bit

DI 8

Channel 8

Bit 6

Data bit

DI 7

Channel 7

Bit 5

Data bit

DI 6

Channel 6

Bit 4

Data bit

DI 5

Channel 5

Bit 3

Data bit

DI 4

Channel 4


Bit 7 Bit 6

Controls

DO 8

Channel 8

Controls

DO 7

Channel 7

Bit 5

Controls

DO 6

Channel 6

Bit 4

Controls

DO 5

Channel 5

Bit 3

Controls

DO 4

Channel 4

Bit 2

Data bit

DI 3

Channel 3

Bit 2

Controls

DO 3

Channel 3

Bit 1

Data bit

DI 2

Channel 2

Bit 0

Data bit

DI 1

Channel 1

Bit 1 Bit 0

Controls

DO 2

Channel 2

Controls DO

1

Channel 1

12.2.3 Analog Input Modules

The analog input modules provide 16-bit measured values. In the input process image, 16-bit measured values for each channel are mapped in Intel format byte by byte for the MODBUS RTU fieldbus coupler/controller.

Information on the structure of control and status bytes

For detailed information on the structure of a particular I/O module’s control/status bytes, please refer to that module’s manual. Manuals for each module can be found on the Internet at www.wago.com

.

When digital input modules are also present in the node, the analog input data is always mapped into the Input Process Image in front of the digital data.

Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750


1-Channel Analog Input Modules

750-491 (and all variants)

I/O Modules 151

Table 142: 1-Channel Analog Input Modules

Input Process Image

Sub-

Index

Offset Byte Designation n n+1

0

1

2

3

D0

D1

D2

D3

Remark

Measured value U

D

Measured value U ref


750-452, -454, -456, -461, -462, -465, -466, -467, -469, -472, -474, -475, 476, -

477, -478, -479, -480, -481, -483, -485, -492, (and all variants),

753-452, -454, -456, -461, -465, -466, -467, -469, -472, -474, -475, 476, -477,

478, -479, -483, -492, (and all variants)



Sub-

Index

Offset Byte Designation n n+1

0

1

2

3

D0

D1

D2

D3

Remark

Measured value channel 1



750-450, -453, -455, -457, -459, -460, -468, (and all variants),

753-453, -455, -457, -459



Sub-

Index

Offset Byte Designation n n+1 n+2 n+3

4

5

6

7

0

1

2

3

D0

D1

D2

D3

D4

D5

D6

D7

Remark





Manual

Version 1.0.0




750-451



Sub-

Index

Offset Byte Designation n n+1 n+2 n+3 n+4 n+5 n+6 n+7

11

12

13

14

15

7

8

9

10

4

5

6

0

1

2

3

D7

D8

D9

D10

D11

D12

D13

D14

D15

D0

D1

D2

D3

D4

D5

D6

Remark









12.2.4 Analog Output Modules

The analog output modules provide 16-bit measured values.

In the output process image, 16-bit measured values for each channel are mapped in Intel format byte by byte for the MODBUS RTU fieldbus coupler/controller.

When digital output modules are also present in the node, the analog output data is always mapped into the Output Process Image in front of the digital data.

Information on the structure of control and status bytes

For detailed information on the structure of a particular I/O module’s control/status bytes, please refer to that module’s manual. Manuals for each module can be found on the Internet at www.wago.com

.

Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750


2-Channel Analog Output Modules

750-550, -552, -554, -556, -560, -585, (and all variants),

753-550, -552, -554, -556

Table 146: 2-Channel Analog Output Modules


Subindex

Offset Byte designation n n+1

0

1

2

3

D0

D1

D2

D3


750-553, -555, -557, -559,

753-553, -555, -557, -559



Subindex

Offset Byte designation n n+1 n+2 n+3

3

4

5

6

7

0

1

2

D0

D1

D2

D3

D4

D5

D6

D7

I/O Modules 153

Remark

Output value channel 1


Remark








Subindex

Offset Byte designation n n+1 n+2 n+3 n+4 n+5

0

1

6

7

8

9

2

3

4

5

10

11

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10

D11

Manual

Version 1.0.0

Remark











Subindex

Offset Byte designation n+6 n+7

12

13

14

15

D12

D13

D14

D15

Remark



12.2.5 Specialty Modules

In addition to the data bytes, the control/status byte is also displayed for select I/O modules. This byte is used for the bi-directional data exchange of the I/O module with the higher-level control system.

The control byte is transferred from the control system to the I/O module and the status byte from the I/O module to the control system. As a result, it is possible to set the counter with the control byte or indicate a range overflow/underflow with the status byte.

The control/status byte is always in the low byte in the process image.

Information about the control/status byte structure

Please refer to the corresponding description of the I/O modules for the structure of the control/status bytes. You can find a manual with the relevant I/O module description at: http://www.wago.com

.

Counter Modules

750-: 404 (and all variants except /000-005)

753-: 404 (and version /000-003)

In the input and output process image, counter modules occupy 5 bytes of user data: 4 data bytes and 1 additional control/status byte. The I/O modules then provide 32-bit counter values. Three words are assigned in the process image via word alignment.

Table 149: Counter Modules 750-404, 753-404


Sub-

Index

Offset Byte designation n

0

1

2

3

4

5

S

-

D0

D1

D2

D3

Remark

Status byte not used

Counter value

Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750




Sub-

Index


0

1

2

3

4

5

C

-

D0

D1

D2

D3

I/O Modules 155

Remark


Counter value

750-404/000-005

In the input and output process images, counter modules occupy a total of 5 bytes of user data: 4 data bytes and 1 additional control/status byte. The I/O modules then provide 16-bit counter values per counter. Three words are assigned in the process image via word alignment.

Table 151: Counter Modules 750-404/000-005


Sub-

Index


0

1

2

3

4

5

S

-

D0

D1

D2

D3

Table 152: Counter Modules 750-404/000-005


Sub-

Index


0

1

2

3

4

5

C

-

D0

D1

D2

D3

Remark


Counter value of counter 1


Remark

Control byte not used

Counter setting value counter 1

Counter setting value counter 2

Manual

Version 1.0.0

156 I/O Modules

750-638,

753-638

WAGO-I/O-SYSTEM 750


In the input and output process image, counter modules occupy 6 bytes of user data, 4 data bytes and two additional control/status bytes. The I/O modules then provide 16-bit counter values. 6 bytes are occupied in the process image.



Subindex


0

1

2

3

4

5

S0

D0

D1

S1

D2

D3

Remark

Status byte of counter 1






Subindex


0

1

2

3

4

5

C0

D0

D1

C1

D2

D3

3-Phase Power Measurement Modules

Remark

Control byte of counter 1




750-493

In the input and output process image, the 3-phase power measurement modules

750-493 occupy a total of 9 bytes of user data; 6 data bytes and 3 additional control/status bytes. 12 bytes are occupied in the process image.

Table 155: 3-Phase Power Measurement Modules 750-493

Input and Output Process Image

Sub-

Index


4

5

6

7

0

1

2

3

C0/S0

-

D0

D1

C1/S1

-

D2

D3

Remark

Control/status byte of channel 1

Empty byte

Counter value of channel 1



Empty byte



Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750


I/O Modules 157

Table 155: 3-Phase Power Measurement Modules 750-493


Sub-

Index

Offset Byte designation n+2

8

9

10

11

C2/S2

-

D4

D5

Remark


Empty byte



750-494, -495

In the input and output process image, the 3-phase power measurement modules

750-494 occupy 24 bytes of user data, 16 data bytes and 8 additional control/status bytes. 24 bytes are occupied in the process image.

Table 156: 3-Phase Power Measurement Modules 750-494, -495


Sub-

Index

Offset Byte designation n+9 n+10 n+11 n+12 n+13 n+14 n+15 n+16 n+17 n+18 n+19 n n+1 n+2 n+3 n+4 n+5 n+6 n+7 n+8 n+20 n+21 n+22 n+23

13

14

15

16

9

10

11

12

17

18

19

20

21

22

23

4

5

6

7

8

0

1

2

3

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10

D11

S4

S5

S6

S7

D0

S0

S1

S2

S3

D12

D13

D14

D15

Remark

Status word

Expanded status word 1



Process value 1

Process value 2

Process value 3

Process value 4

Manual

Version 1.0.0



Table 157: 3-Phase Power Measurement Modules 750-494, -495


Offset

14

15

16

17

10

11

12

13

18

19

20

21

22

23

0

5

6

7

8

9

1

2

3

4

Sub-

Index n n+10 n+11 n+12 n+13 n+14 n+15 n+16 n+17 n+18 n+19 n+20 n+1 n+2 n+3 n+4 n+5 n+6 n+7 n+8 n+9 n+21 n+22 n+23

Byte designation

C0

C1

C2

C3

C4

C5

C6

C7

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10

D11

D12

D13

D14

D15

Remark

Control word

Expanded control word 1

Expanded control word 2

Expanded control word 3 not used

Pulse Width Modules

750-511, (and all variants / xxx-xxx)

In the input and output process image, pulse width modules occupy 6 bytes of user data, 4 data bytes and two additional control/status bytes. 6 bytes are occupied in the process image.

Table 158: Pulse Width Modules 750-511 / xxx-xxx


Sub-

Index


3

4

5

0

1

2

C0/S0

D0

D1

C1/S1

D2

D3

Remark


Data value of channel 1


Data value of channel 2

Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750


Serial Interfaces with an Alternative Data Format

I/O Modules 159

750-650, (and the variants /000-002, -004, -006, -009, -010, -011, -012, -013),

750-651, (and the variants /000-001, -002, -003),

750-653, (and the variants /000-002, -007)

The process image of the / 003-000 variants depends on the parameterized operating mode!

The operating mode of the configurable /003-000 I/O module versions can be set.

The structure of the process image of this I/O module then depends on which operating mode is set.

The I/O modules with serial interface that are set to the alternative data format occupy 4 bytes of user data in the input and output area of the process image, 3 data bytes and one additional control/status byte. 4 bytes are occupied in the process image.

Table 159: Serial Interfaces with Alternative Data Format


Sub-

Index


0

1

2

3

C/S

D0

D1

D2

Serial Interface with Standard Data Format

Remark

Control/status byte

Data bytes

750-650/000-001, -014, -015, -016

750-653/000-001, -006

The I/O modules with serial interface that are set to the standard data format occupy 6 bytes of user data in the input and output area of the process image, 5 data bytes and one additional control/status byte. 6 bytes are occupied in the process image.

Table 160: Serial Interface with Standard Data Format


Subindex


0

1

2

3

4

5

C/S

D0

D1

D2

D3

D4

Remark

Control/status byte

Data bytes

Manual

Version 1.0.0

160 I/O Modules

KNX/EIB/TP1 Module

753-646

WAGO-I/O-SYSTEM 750


In the input and output process image, the KNX/TP1 module occupies 24 bytes of user data in router and device mode, 20 data bytes and 1 control/status byte. Even though the additional bytes S1 or C1 are transferred as data bytes, they are used as extended status and control bytes. The opcode is used for the data read/write command and for triggering specific functions of the KNX/EIB/TP1 module.

Access to the process image is not possible in router mode. Telegrams can only be tunneled. In device mode, access to the KNX data can only be performed via special function blocks of the IEC application. Configuration using the ETS engineering tool software is not required for KNX.

Table 161: Input/Output Process Image of the KNX/EIB/TP1-Module

Offset

Input/Output Process Image

Byte designation Remark Sub-

Index n n+1 n+2 n+3 n+4

… n+23

0

1

2

3

4

…

23

-

C0/S0

C1/S1

OP

D0

…

D19 not used

Control/status byte

Additional control/status byte

Opcode

Data byte 0

…

Data byte 19

Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750


RS-232/RS-485 Serial Interface

750-652

I/O Modules 161

Serial Transmission Mode

The data to be sent and received is stored in up to 46 input and output bytes. The data flow is controlled with the control/status byte. The input bytes form the memory area for up to 46 characters, which were received by the interface. The characters to be sent are passed in the output bytes.

Table 162: Input/Output Process Image “Serial Interface”, Serial Transmission Mode



Index n

4

… n+8

…

7

8

… n+23 23

0

1

2

3 n+24 24

… … n+47 47

8 bytes

24 bytes

48 bytes

S0/C0

S1/C1

D0

D1

D2

…

D5

D6

…

D21

D22

…

D45

Control/status byte S0


Data byte 0

Data byte 1

Data byte 2

…

Data byte 5

Data byte 6

…

Data byte 21

Data byte 22

…

Data byte 45

Data Exchange Mode

The data to be sent and received is stored in up to 47 input and output bytes. The data flow is controlled with the control/status byte.

Table 163: Input/Output Process Image “Serial Interface”, Data Exchange Mode



Index

Offset

0

1 n

2

3 n+8

… n+23 23 n+24 24

…

7

8

…

… … n+47 47

8 bytes

24 bytes

48 bytes

S0/C0

D0

D1

D2

…

D6

D7

…

D22

D23

…

D46


Data byte 0

Data byte 1

Data byte 2

…

Data byte 6

Data byte 7

…

Data byte 22

Data byte 23

…

Data byte 46

Manual

Version 1.0.0

162 I/O Modules

Data Exchange Module

750-654 (and variant /000-001)

WAGO-I/O-SYSTEM 750


In the input and output process image, data exchange modules occupy 4 data bytes. 4 bytes are occupied in the process image.

Table 164: Data Exchange Modules


Subindex


0

1

2

3

D0

D1

D2

D3

Remark

Data bytes

SSI Transmitter Interface I/O Modules with an Alternative Data Format

750-630 (and all variants)

The process image of the / 003-000 variants depends on the parameterized operating mode!

The operating mode of the configurable /003-000 I/O module versions can be set.

The structure of the process image of this I/O module then depends on which operating mode is set.

In the input process image, SSI transmitter interface modules with status occupy 4 data bytes. Two words are assigned in the process image via word alignment.

Table 165: SSI transmitter interface modules with alternative data format


Subindex


0

1

2

3

D0

D1

D2

D3

Remark

Data bytes

Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750


I/O Modules 163

SSI Transmitter Interface Modules with Standard Data Format

750-630/000-004, -005, -007

In the input process image, SSI transmitter interface modules with status occupy 5 bytes of user data; 4 data bytes and one additional status byte. A total of 6 bytes are occupied in the process image.

Table 166: SSI Transmitter Interface Modules with Standard Data Format


Subindex


0

1

2

3

4

5

S

-

D0

D1

D2

D3

Remark


Data bytes

Distance and Angle Measurement

750-631

The I/O module 750-631 occupies 5 bytes in the input process image and 3 bytes in the output process image. 6 bytes are occupied in the process image.

Table 167: Distance and Angle Measurement Modules


Subindex


3

4

5

0

1

2

S

D0

D1

-

D2

D3

Table 168: Distance and Angle Measurement Modules


Subindex


0

1

2

3

4

5

C

D0

D1

-

-

-

Remark

Status byte

Counter word not used

Latch word

Remark

Control byte


Manual

Version 1.0.0

164 I/O Modules

750-634

WAGO-I/O-SYSTEM 750


The I/O module 750-634 occupies 5 bytes in the input process image, or 6 bytes in cycle duration measurement operating mode, and 3 bytes in the output process image. 6 bytes are occupied in the process image.

Table 169: Incremental Encoder Interface 750-634


Subindex

Offset Byte designation Remark

0

1

S

D0

Status byte

2

3

Counter word n

D1

D2

*)

(Cycle duration)

4 D3

Latch word

5 D4

*)

If the control byte sets the operating mode to cycle duration measurement, D2 together with

D3/D4 provides a 24-bit value for the cycle duration.

Table 170: Incremental Encoder Interface, 750-634


Subindex


0

1

2

3

4

5

C

D0

D1

-

-

-

Remark

Status byte


750-637

The incremental encoder interface module occupies 6 bytes of user data in the input and output area of the process image, 4 data bytes and two additional control/status bytes. 6 bytes are occupied in the process image.

Table 171:Inkremental Encoder Interface, 750-637


Subindex


0

1

2

3

4

5

C0/S0

D0

D1

C1/S1

D2

D3

Remark

Control/status byte 1

Data values

Control/status byte 2

Data values

Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750


750-635,

753-635

I/O Modules 165

In the input and output process image, the digital impulse interface module occupies a total of 4 bytes of user data: 3 data bytes and 1 additional control/status byte. 4 bytes are occupied in the process image.

Table 172: Digitale Impulse Interface, 750-635


Subindex


0

1

2

3

C0/S0

D0

D1

D2

Remark

Control/status byte

Data values

RTC module

750-640

In both the input and output process image, the RTC module occupies 6 bytes of user data: 4 data bytes and 1 additional control/status byte, as well as 1 command byte (ID) each. 6 bytes are occupied in the process image.

Table 173: RTC Module, 750-640


Subindex


0

1

2

3

4

5

C/S

ID

D0

D1

D2

D3

Remark

Control/status byte

Command byte

Data bytes

Manual

Version 1.0.0

166 I/O Modules

Stepper module

750-670, -671, -672, -673

WAGO-I/O-SYSTEM 750


The stepper module makes a 12-byte input/output process image available.

The data to be sent and received is stored in up to 7 input/output bytes depending on the operating mode. If the mailbox is activated, the first 6 data bytes are overlaid with mailbox data.

Table 174: Input Process Image, Stepper Module with Mailbox Deactivated


Subindex


4

5

6

0

1

2

3

C0/S0

-

D0

D1

D2

D3

D4

7

8

9

10

11

D5

D6

C3/S3

C2/S2

C1/S1

Remark

Control/status byte

Reserved

Data bytes

Control/status byte

Control/status byte

Control/status byte

Table 175: Output Process Image, Stepper Module with Mailbox Activated


Subindex


4

5

6

0

1

2

3

C0/S0

-

MBX0

MBX1

MBX2

MBX3

MBX4

7

8

9

10

11

MBX5

-

C3/S3

C2/S2

C1/S1

Remark

Control/status byte

Reserved

Mailbox bytes

(mailbox activated)

Reserved

Control/status byte

Control/status byte

Control/status byte

Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750


DALI/DSI Master Module

750-641

I/O Modules 167

In the input and output process image, the DALI/DSI master module occupies a total of 6 data bytes: 5 data bytes and 1 additional control/status byte. 6 bytes are occupied in the process image.

Table 176: DALI/DSI Master Module 750-641


Subindex

Offset Byte designation

0

1

S

D0 n

2

3

4

5

D1

D2

D3

D4

Remark

Status byte

DALI response

DALI address

Message 3

Message 2

Message 1

Table 177: DALI/DSI Master Module 750-641


Subindex

Offset Byte designation

0

1

C

D0 n

2

3

4

5

D1

D2

D3

D4

DALI Multi-Master Module

753-647

Remark

Control byte

DALI command, DSI dimming value

DALI address

Parameter 2

Parameter 1

Command extension

The DALI Multi-Master module occupies a total of 24 bytes in the input and output range of the process image.

The DALI Multi-Master module can be operated in "Easy" mode (default) and

"Full" mode. "Easy" mode is used to transmit simply binary signals for lighting control. Configuration or programming via DALI master module is unnecessary in "Easy" mode.

Changes to individual bits of the process image are converted directly into DALI commands for a pre-configured DALI network. 22 bytes of the 24-byte process image can be used directly for switching of ECGs, groups or scenes in the Easy mode. Switching commands are transmitted via DALI and group addresses, where each DALI and each group address is represented by a 2-bit pair.

Manual

Version 1.0.0



The structure of the process data is described in detail in the following tables.

Table 178: Overview of Input Process Image in the “Easy” Mode


Sub-

Index


0

1

S

-

Remark

Status, activate broadcast

Bit 0: 1-/2-button mode

Bit 2: Broadcast status ON/OFF

Bit 1, 3-7: - res. n+2 2 DA0…DA3 n+3 3 DA4…DA7 n+4 n+5 n+6 n+7 n+8 n+9

4

5

6

7

8

9

DA8…DA11

DA12…DA15

DA16…DA19

DA20…DA23

DA24…DA27

DA28…DA31

Bit pair for DALI address DA0: n+10 n+11 n+12 n+13 n+14 n+15 n+16 n+17 n+18 n+19 n+20 n+21

10

11

12

13

14

15

16

17

18

19

20

21

DA32…DA35

DA36…DA39

DA40…DA43

DA44…DA47

DA48…DA51

DA52…DA55

DA56…DA59

DA60…DA63

GA0…GA3

GA4…GA7

GA8…GA11

GA12…GA15

Bit 1: Bit set = ON

Bit not set = OFF

Bit 2: Bit set = Error

Bit not set = No error

Bit pairs DA1 to DA63 similar to DA0.

Bit pair for DALI group address GA0:

Bit 1: Bit set = ON

Bit not set = OFF

Bit 2: Bit set = Error n+22 22 Bit not set = No error n+23 n+24

23

24 n+25

DA = DALI address

GA = Group address

25

-

-

Bit pairs GA1 to GA15 similar to GA0.

Not used

Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750


I/O Modules 169

Table 179: Overview of the Output Process Image in the “Easy” Mode


Sub-

Index


0

1

S

-

Remark

Broadcast ON/OFF and activate:

Bit 0: Broadcast ON

Bit 1: Broadcast OFF

Bit 2: Broadcast ON/OFF/dimming

Bit 3: Broadcast short ON/OFF

Bit 4…7: reserved res. n+2 2 DA0…DA3 n+3 n+4

3

4

DA4…DA7

DA8…DA11 n+5 n+6 n+7 n+8 n+9 n+10 n+11 n+12 n+13 n+14 n+15 n+16 n+17 n+18 n+19 n+20 n+21

5

15

16

17

18

19

20

12

13

14

6

7

8

9

10

11

21

DA12…DA15

DA16…DA19

DA20…DA23

DA24…DA27

DA28…DA31

DA32…DA35

DA36…DA39

DA40…DA43

DA44…DA47

DA48…DA51

DA52…DA55

DA56…DA59

DA60…DA63

GA0…GA3

GA4…GA7

GA8…GA11

GA12…GA15

Bit pair for DALI address DA0:

Bit 1: short: DA switch ON long: dimming, brighter

Bit 2: short: DA switch OFF long: dimming, darker

Bit pairs DA1 to DA63 similar to DA0.

Bit pair for DALI group address GA0:

Bit 1: short: GA switch ON long: dimming, brighter

Bit 2: short: GA switch OFF n+22 22 long: dimming, darker n+23 n+24

23

24 n+25

DA = DALI address

GA = Group address

25

Bit 0…7

Bit 8…15

Bit pairs GA1 to GA15 similar to GA0.

Switch to scene 0…15

Manual

Version 1.0.0

170 I/O Modules

LON

®

FTT module

WAGO-I/O-SYSTEM 750


753-648

The process image of the LON

®

FTT module consists of a control/status byte and

23 bytes of bidirectional communication data that is processed by the WAGO-

I/OPRO function block "LON_01.lib". This function block is required for the function of the LON

®

FTT module and makes a user interface available on the control side.

EnOcean Radio Receiver I/O Module

750-642

In the input and output process image, the EnOcean radio receiver module occupies a total of 4 bytes of user data: 3 data bytes and 1 additional control/status byte. However, the 3 bytes of output data are not used. 4 bytes are occupied in the process image.

Table 180: EnOcean Radio Receiver I/O Module, 750-642


Subindex


0

1

2

3

S

D0

D1

D2

Table 181: EnOcean Radio Receiver I/O Module, 750-642


Subindex


0

1

2

3

C

-

-

-

Remark

Status byte

Data bytes

Remark

Control byte not used

Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750


Bluetooth

®

RF Transceiver

I/O Modules 171

750-644

The size of the process image for the Bluetooth

®

I/O module can be set at a fixed size of 12, 24 or 48 bytes.

It consists of one control byte (input) or one status byte (output), one empty byte, one 6-, 12- or 18-byte overlayable mailbox (mode 2) and the Bluetooth

®

process data with a size of 4 to 46 bytes.

The Bluetooth

®

I/O module uses between 12 to 48 bytes in the process image. The size of the input and output process images are always the same.

The first byte contains the control/status byte; the second contains an empty byte.

Process data attach to this directly when the mailbox is hidden. When the mailbox is visible, the first 6, 12 or 18 bytes of process data are overlaid by the mailbox data, depending on their size. Bytes in the area behind the optionally visible mailbox contain basic process data. The internal structure of the Bluetooth

® process data can be found in the documentation for the Bluetooth

®

RF

Transceivers 750-644.

Table 182: Bluetooth

®

RF Transceiver, 750-644


Process image size

12 bytes 24 bytes n PDO n+1 PDO

1 status/

Control byte

1 empty byte

6 bytes mailbox or

6 bytes process data


4 bytes empty (reserved)

1 status/

Control byte

1 empty byte

6 bytes mailbox or


8 bytes process data n+2 PDO free for next I/O module 8 bytes process data n+3 PDO - free for next I/O module n+4 PDO n+5 PDO n+6 PDO

-

-

-

-

-

-

48 bytes

1 status/

Control byte

1 empty byte

6 bytes mailbox or






8 bytes process data free for next I/O module

These I/O modules appear as follows depending on the data width set:

Data width

1x12 bytes gateway 1 Input

1x12 bytes gateway 1 output





One sub-index is assigned per I/O module.

Object

0x4200

0x4300

0x4200

0x4300

0x4200

0x4300

Manual

Version 1.0.0

172 I/O Modules

MP Bus Master Module

750-643

WAGO-I/O-SYSTEM 750


In the input and process image, the MP Bus Master module occupies 8 bytes of user data, 6 data bytes and two additional control/status bytes. 8 bytes are occupied in the process image.

Table 183: MP Bus Master Module 750-643


Sub-

Index


0

1

2

3

4

5

6

7

C0/S0

C1/S1

D0

D1

D2

D3

D4

D5

Remark

Control/status byte

Additional control/status byte

Vibration Velocity/Bearing Condition Monitoring VIB I/O

750-645

Data bytes

In both the input and the output process image, the vibration velocity/bearing condition monitoring VIB I/O module occupies 12 bytes of user data: 8 data bytes and 4 additional control/status bytes. 12 bytes are occupied in the process image.

Table 184: Vibration Velocity/Bearing Condition Monitoring VIB I/O, 750-645


Sub-

Index

Offset Byte designation Remark n

0

1

2

C0/S0

D0

D1

Control/status byte

(log. channel 1, sensor input 1)

Data bytes


Control/status byte

(log. channel 2, sensor input 2) n+1

3 C1/S1 n+2

4

5

6

7

8

D2

D3

C2/S2

D4

D5

Data bytes


Control/status byte


Data bytes

(log. channel 3, sensor input 1) n+3

9

10

11

C3/S3

D6

D7

Control/status byte


Data bytes


Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750


DC Drive Controller

750-636

I/O Modules 173

The I/O module occupies 6 bytes of input and output data in the process image.

The position data to be sent and received is stored in 4 output bytes and 4 input bytes. 2 control/status bytes are used to control the I/O module and drive. In addition to the position data in the input process image, extended status information can also be shown.

Table 185: Input Process Image DC Drive Controller, 750-636

Sub-

Index

Offset


Byte designation n

0

1

2

3

4

5

D0

D1

D2

D3

S0

S1

S2

S3

S4

S5

Remark

Status byte S0

Status byte S1

Actual position

(LSB)

Ext. status byte S2

Actual position

Actual position

Actual position

(MSB)

Ext. status byte S3

Ext. status byte S4

Ext. status byte S5

Table 186: Output Process Image DC Drive Controller, 750-636

Sub-

Index

Offset


Byte designation n

0

1

2

3

4

5

C0

C1

D0

D1

D2

D3

Remark

Control byte C0

Control byte C1

Setpoint position (LSB)

Setpoint position

Setpoint position

Setpoint position (MSB)

Manual

Version 1.0.0

174 I/O Modules

4-Channel I/O-Link Master

750-657

WAGO-I/O-SYSTEM 750


In the input and output process image, the I/O module 750-657 occupies a total of

24 bytes of user data, 20 data bytes and 4 additional control/status bytes, mailbox bytes and SIO bytes. n+8 n+9 n+10 n+11 n+12 n+13 n+14 n+15 n+16 n+17 n+18 n+19 n+20 n+21 n+22 n+23

Table 187: Input/Output Process Image, 4-Channel IO Link Master, 750-657

Sub-

Index

Offset


Byte designation Remark n

17

18

19

20

13

14

15

16

21

22

23

8

9

10

11

12

4

5

6

7

0

1

2

3 4 bytes

6 bytes

8 bytes

10 bytes

12 bytes

16 bytes

20 bytes

24 bytes

D9

D10

D11

D12

D13

D14

D15

D16

D17

D18

D19

S0/C0

FC0

MB0

SIO

D0

D1

D2

D3

D4

D5

D6

D7

D8

Control/status byte

Acyclic channel Register byte 0

Mailbox byte Register byte 1

SIO Byte

Data byte 0

Data byte 1

Data byte 2

Data byte 3

Data byte 4

Data byte 5

Data byte 6

Data byte 7

Data byte 8

Data byte 9

Data byte 10

Data byte 11

Data byte 12

Data byte 13

Data byte 14

Data byte 15

Data byte 16

Data byte 17

Data byte 18

Data byte 19


Data width

1x4 bytes input data

1x4 bytes output data



1x10/12/16/20/24 bytes input data

1x10/12/16/20/24 bytes output data

Object Sub-index

0x2800

0x2900

0x3200

0x3300

0x380n

0x390n

1 sub-index is occupied per I/O module.

One I/O module is mapped per object. Each data byte assigned to one sub-index.

Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750


CAN Gateway

750-658

I/O Modules 175

The length of the process image of the CAN Gateway I/O module can adjusted to a fixed size of 8, 12, 16, 20, 24, 32, 40 or 48 bytes.

“Sniffer” and “Transparent” Operating Modes n+8 n+9 n+10 n+11 n+12 n+13 n+14 n+15 n+16 n+17 n+18 n+19 n+20 n+21 n+22 n+23 n+24

… n+31 n+32

… n+47

Table 188: CAN Gateway Input/Output Process Image, 750-658

Sub-

Index

Offset


Byte designation n

23

24

…

31

32

…

47

17

18

19

20

13

14

15

16

21

22

8

9

10

11

12

4

5

6

7

0

1

2

3

8 bytes

12 bytes

16 bytes

20 bytes

24 bytes

32 bytes

48 bytes

D15

D16

…

D23

D24

…

D39

D5

D6

D7

D8

D9

D10

D11

D12

D13

D14

S0/C0

MBX0

MBX1

MBX2

MBX3

MBX4

MBX5

MBX6

D0

D1

D2

D3

D4

Remark

Control/status byte

Mailbox byte 0

Mailbox byte 1

Mailbox byte 2

Mailbox byte 3

Mailbox byte 4

Mailbox byte 5

Mailbox byte 6

Data byte 0

Data byte 1

Data byte 2

Data byte 3

Data byte 4

Data byte 5

Data byte 6

Data byte 7

Data byte 8

Data byte 9

Data byte 10

Data byte 11

Data byte 12

Data byte 13

Data byte 14

Data byte 15

Data byte 16

…

Data byte 23

Data byte 24

…

Data byte 39

Manual

Version 1.0.0




Data width



1x12/16/20/24/32/40/48 bytes input data

1x12/16/20/24/32/40/48 bytes output data

Object

0x3600

0x3700

0x380n

0x390n

Sub-index



“Mapped” Operating Mode n+8 n+9 n+10 n+11 n+12 n+13 n+14 n+15 n+16 n+17 n+18 n+19 n+20 n+21 n+22 n+23 n+24

… n+31 n+32

… n+47

Table 189: CAN Gateway Input/Output Process Image, 750-658

Sub-

Index

Offset


Byte designation n

15

16

17

18

11

12

13

14

19

20

21

31

32

…

47

22

23

24

…

0

5

6

7

8

1

2

3

4

9

10

8 bytes

12 bytes

16 bytes

20 bytes

24 bytes

32 bytes

48 bytes

D2

D3

D4

D5

D6

D7

D8

D9

D10

D11

D12

D13

D14

D15

…

D22

D23

…

D38

S0/C0

MBX0

MBX1

MBX2

MBX3

MBX4

MBX5

MBX6

T

D0

D1

Remark

Control/status byte

Mailbox byte 0

Mailbox byte 1

Mailbox byte 2

Mailbox byte 3

Mailbox byte 4

Mailbox byte 5

Mailbox byte 6

Toggle bit

Data byte 0

Data byte 1

Data byte 2

Data byte 3

Data byte 4

Data byte 5

Data byte 6

Data byte 7

Data byte 8

Data byte 9

Data byte 10

Data byte 11

Data byte 12

Data byte 13

Data byte 14

Data byte 15

…

Data byte 22

Data byte 23

…

Data byte 38

Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750


I/O Modules 177


Data width



1x12/16/20/24/32/40/48 bytes input data

1x12/16/20/24/32/40/48 bytes output data

Proportional Valve Module

750-632

Object

0x3600

0x3700

0x380n

0x390n

Sub-index



The proportional valve module appears in 1-channel operation (1 valve) with 6 bytes, and in 2-channel operation (2 valves) with 12 Bytes.

1-Channel Mode

Table 190: Proportional Valve Module Input Process Image

Sub-

Index

Offset



0

1

2

3

S0

MBX_ST

MBX_DATA

V1_STATUS

Status byte

Mailbox status byte

Mailbox data

Valve 1 control

4 V1_ACTUAL_L Valve 1, actual value, low byte

5 V1_ACTUAL_H

Table 191: Proportional Valve Module Output Process Image

Valve 1, actual valve, high byte

Sub-

Index

Offset



3

4

5

0

1

2

C0

MBX_CTRL

MBX_DATA

V1_CONTROL

V1_SETPOINTVALUE_L

V1_SETPOINTVALUE_H

Control byte

Mailbox control byte

Mailbox data

Valve 1 control

Valve 1, setpoint, low byte

Valve 1, setpoint, high byte

Manual

Version 1.0.0

178 I/O Modules

2-Channel Mode

WAGO-I/O-SYSTEM 750


Sub-

Index n n+1 n+2 n+3 n+4 n+5 n+6 n+7 n+8 n+9 n+10 n+11

Table 192: Proportional Valve Module Input Process Image

Sub-

Index n

Offset


Byte designation Remark n+1 n+2 n+3 n+4 n+5 n+6 n+7 n+8 n+9 n+10

0

1

2

3

4

5

6

7

8

9

10

S0

MBX_ST

MBX_DATA1

MBX_DATA2

MBX_DATA3

MBX_DATA4

V1_STATUS

V2_STATUS

V1_ACTUAL_L

V1_ACTUAL_H

V2_ACTUAL_L

Status byte

Mailbox status byte

Mailbox data

Valve 1 control

Valve 2 control

Valve 1, actual value, low byte


Valve 2, actual value, low byte n+11 11 V2_ACTUAL_H

Table 193: Proportional Valve Module Output Process Image


Offset


Byte designation Remark

8

9

10

11

4

5

6

7

0

1

2

3

C0

MBX_CTRL

MBX_DATA1

MBX_DATA2

MBX_DATA3

MBX_DATA4

V1_CONTROL

V2_CONTROL

V1_SETPOINTVALUE_L

V1_SETPOINTVALUE_H

V2_SETPOINTVALUE_L

V2_SETPOINTVALUE_H

Control byte

Mailbox control byte

Mailbox data

Valve 1 control

Valve 2 control





AS Interface Master Module

750-655

The process image size for the AS interface master module is adjustable to: 12,

20, 24, 32, 40 or 48 bytes.

It consists of a control or status byte, a mailbox with 0, 6, 10, 12 or 18 bytes and 0 to 32 bytes of AS interface process data.

The AS interface master module occupies 6 to a maximum of 24 words in the process image with word alignment.

The first input or output word contains the status or control byte, and an empty byte.

Subsequently, mailbox data is mapped when the mailbox is permanently

Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750


I/O Modules 179 superimposed (Mode 1).

While in operating mode with a suppressible mailbox (Mode 2), the mailbox and the cyclical process data are mapped next.

The remaining words contain the remaining process data.

The mailbox and the process image sizes are set with the WAGO-I/OCHECK startup tool.

Table 194: AS Interface Master Module, 750-655


Offset

Byte designation

High byte Low-byte

0 - C0/S0

1

2

3

... max.

23

D1

D3

D5

...

D45

D0

D2

D4

...

D44 not used

Remark

Control/status byte

Mailbox (0, 3, 5, 6 or 9 words) and process data (0 ‒ 16 words)

Manual

Version 1.0.0

180 I/O Modules

12.2.6 System Modules

WAGO-I/O-SYSTEM 750


System Modules with Diagnostics

750-610, -611

Power supply modules 750-610 and -611 with diagnostics provide 2 bits to monitor the power supply.

Table 195: System Modules with Diagnostics, 750-610, -611



Diag. bit

S 2

Fuse

Bit 0

Diag. bit

S 1

Voltage

12.2.6.1 Binary Space Module

750-622

The Binary Space Modules behave alternatively like 2 channel digital input modules or output modules and seize depending upon the selected settings 1, 2, 3 or 4 bits per channel. According to this, 2, 4, 6 or 8 bits are occupied then either in the process input or the process output image.

Table 196: Binary Space Module 750-622 (with Behavior Like 2 Channel Digital Input)


Bit 7

(Data bit

DI 8)

Bit 6

(Data bit

DI 7)

Bit 5

(Data bit

DI 6)

Bit 4

(Data bit

DI 5)

Bit 3

(Data bit

DI 4)

Bit 2

(Data bit

DI 3)

Bit 1

Data bit

DI 2

Bit 0

Data bit

DI 1

Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750


Use in Hazardous Environments 181

13 Use in Hazardous Environments

The WAGO-I/O-SYSTEM 750 (electrical equipment) is designed for use in

Zone 2 hazardous areas.

The following sections include both the general identification of components

(devices) and the installation regulations to be observed. The individual subsections of the “Installation Regulations” section must be taken into account if the I/O module has the required approval or is subject to the range of application of the ATEX directive.

Manual

Version 1.0.0

182 Use in Hazardous Environments WAGO-I/O-SYSTEM 750


13.1 Marking Configuration Examples

13.1.1 Marking for Europe According to ATEX and IEC-Ex

Figure 53: Side Marking Example for ATEX and IEC Ex Approved I/O Modules According to

CENELEC and IEC

Figure 54: Printing Text Detail – Marking Example for ATEX and IEC Ex Approved I/O Modules

According to CENELEC and IEC

Table 197: Description of Marking Example for ATEX and IEC Ex Approved I/O Modules


Printing on Text

DEMKO 08 ATEX 142851 X

IECEx PTB 07.0064X

I M2 / II 3 GD

Ex nA

IIC

T4

Description

Approval body and/or number of the examination certificate

Explosion protection group and Unit category

Type of ignition and extended identification

Explosion protection group

Temperature class

Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750



Figure 55: Side Marking Example for Ex i and IEC Ex i Approved I/O Modules According to

CENELEC and IEC

Figure 56: Text Detail – Marking Example for Ex i and IEC Ex i Approved I/O Modules


Manual

Version 1.0.0



Table 198: Description of Marking Example for Ex i and IEC Ex i Approved I/O Modules


Inscription text


TUN 09.0001X

Description

Approving authority or certificate numbers

Dust

II

3(1)D

Ex tD

[iaD]

Device group: All except mining

Device category: Zone 22 device (Zone 20 subunit)

Explosion protection mark

Protection by enclosure

Approved in accordance with "Dust intrinsic safety" standard

A22 Surface temperature determined according to

Procedure A, use in Zone 22

Dust-tight (totally protected against dust)

Max. surface temp. of the enclosure (no dust bin)

IP6X

T 135°C

Mining

I

(M2)

[Ex ia]

Device group: Mining

Device category: High degree of safety

Explosion protection: Mark with category of type of protection intrinsic safety: Even safe when two errors occur

Device group: Mining I

Gases

II

3(1)G

Ex nA

[ia]

IIC

T4

Device group: All except mining

Device category: Zone 2 device (Zone 0 subunit)

Explosion protection mark

Type of protection: Non-sparking operating equipment

Category of type of protection intrinsic safety: Even safe when two errors occur

Explosion Group

Temperature class: Max. surface temperature 135°C

Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750



13.1.2 Marking for America According to NEC 500

Figure 57: Side Marking Example for I/O Modules According to NEC 500

Figure 58: Text Detail – Marking Example for I/O Modules According to NEC 500

Table 199: Description of Marking Example for I/O Modules According to NEC 500

Printing on Text

CL 1

Description

Explosion protection group (condition of use category)

DIV 2

Grp. ABCD

Optemp code T4

Area of application (zone)

Explosion group (gas group)

Temperature class

Manual

Version 1.0.0



13.2 Installation Regulations

In the Federal Republic of Germany , various national regulations for the installation in explosive areas must be taken into consideration. The basis for this forms the working reliability regulation, which is the national conversion of the

European guideline 99/92/E6. They are complemented by the installation regulation EN 60079-14. The following are excerpts from additional VDE regulations:

Table 200: VDE Installation Regulations in Germany

DIN VDE 0100 Installation in power plants with rated voltages up to 1000 V

DIN VDE 0101 Installation in power plants with rated voltages above 1 kV

DIN VDE 0800 Installation and operation in telecommunication plants including information processing equipment

DIN VDE 0185 lightning protection systems

The USA and Canada have their own regulations. The following are excerpts from these regulations:

Table 201: Installation Regulations in USA and Canada

NFPA 70 National Electrical Code Art. 500 Hazardous Locations

ANSI/ISA-RP 12.6-1987 Recommended Practice

C22.1 Canadian Electrical Code

Notice the following points

When using the WAGO-I/O SYSTEM 750 (electrical operation) with Ex approval, the following points are mandatory:

Manual

Version 1.0.0

WAGO-I/O-SYSTEM 750



13.2.1 Special Conditions for Safe Operation of the ATEX and IEC

Ex (acc. DEMKO 08 ATEX 142851X and IECEx PTB 07.0064)

The fieldbus-independent I/O modules of the WAGO-I/O-SYSTEM 750-.../...-... must be installed in an environment with degree of pollution 2 or better. In the final application, the I/O modules must be mounted in an enclosure with IP 54 degree of protection at a minimum with the following exceptions:

- I/O modules 750-440, 750-609 and 750-611 must be installed in an IP 64 minimum enclosure.

- I/O module 750-540 must be installed in an IP 64 minimum enclosure for

230 V AC applications.

- I/O module 750-440 may be used up to max. 120 V AC.

When used in the presence of combustible dust, all devices and the enclosure shall be fully tested and assessed in compliance with the requirements of IEC 61241-

0:2004 and IEC 61241-1:2004.

When used in mining applications the equipment shall be installed in a suitable enclosure according to EN 60079-0:2006 and EN 60079-1:2007.

I/O modules fieldbus plugs or fuses may only be installed, added, removed or replaced when the system and field supply is switched off or the area exhibits no explosive atmosphere.

DIP switches, coding switches and potentiometers that are connected to the I/O module may only be operated if an explosive atmosphere can be ruled out.

I/O module 750-642 may only be used in conjunction with antenna 758-910 with a max. cable length of 2.5 m.

To exceed the rated voltage no more than 40%, the supply connections must have transient protection.

The permissible ambient temperature range is 0 °C to +55 °C.

Manual

Version 1.0.0



13.2.2 Special conditions for safe use (ATEX Certificate TÜV 07

ATEX 554086 X)

1. For use as Gc- or Dc-apparatus (in zone 2 or 22) the field bus independent

I/O modules WAGO-I/O-SYSTEM 750-*** shall be erected in an enclosure that fulfils the requirements of the applicable standards (see the marking)

EN 60079-0, EN 60079-11, EN 60079-15, EN 61241-0 and EN 61241-1.

For use as group I, electrical apparatus M2, the apparatus shall be erected in an enclosure that ensures a sufficient protection according to EN 60079-0 and EN 60079-1 and the degree of protection IP64. The compliance of these requirements and the correct installation into an enclosure or a control cabinet of the devices shall be certified by an ExNB.

2. If the interface circuits are operated without the field bus coupler station type 750-3../…-… (DEMKO 08 ATEX 142851 X), measures must be taken outside of the device so that the rating voltage is not being exceeded of more than 40% because of transient disturbances.

3. DIP-switches, binary-switches and potentiometers, connected to the module may only be actuated when explosive atmosphere can be excluded.

4. The connecting and disconnecting of the non-intrinsically safe circuits is only permitted during installation, for maintenance or for repair purposes.

The temporal coincidence of explosion hazardous atmosphere and installation, maintenance resp. repair purposes shall be excluded. This is although and in particular valid for the interfaces “CF-Card”, “USB”,

“Fieldbus connection“, “Configuration and programming interface“,

“antenna socket“, “D-Sub“ and the “Ethernet interface“. These interfaces are not energy limited or intrinsically safe circuits. An operating of those circuits is in the behalf of the operator.

5. For the types 750-606, 750-625/000-001, 750-487/003-000, 750-484 and

750-633 the following shall be considered: The interface circuits shall be limited to overvoltage category I/II/III (non mains/mains circuits) as defined in EN 60664-1.

6. For the type 750-601 the following shall be considered: Do not remove or replace the fuse when the apparatus is energized.

7.

The ambient temperature range is: 0°C ≤ T a

≤ +55°C (for extended details please note certificate).

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8. The following warnings shall be placed nearby the unit:

Do not remove or replace fuse when energized!

If the module is energized do not remove or replace the fuse.

Do not separate when energized!

Do not separate the module when energized!

Separate only in a non-hazardous area!

Separate the module only in a non-hazardous area!

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13.2.3 Special conditions for safe use (IEC-Ex Certificate TUN

09.0001 X)

1. For use as Dc- or Gc-apparatus (in zone 2 or 22) the fieldbus independent

I/O modules WAGO-I/O-SYSTEM 750-*** shall be erected in an enclosure that fulfils the requirements of the applicable standards (see the marking)

IEC 60079-0, IEC 60079-11, IEC 60079-15, IEC 61241-0 and IEC 61241-1.

For use as group I, electrical apparatus M2, the apparatus shall be erected in an enclosure that ensures a sufficient protection according to IEC 60079-0 and IEC 60079-1 and the degree of protection IP64. The compliance of these requirements and the correct installation into an enclosure or a control cabinet of the devices shall be certified by an ExCB.

2. Measures have to be taken outside of the device that the rating voltage is not being exceeded of more than 40% because of transient disturbances.

3. DIP-switches, binary-switches and potentiometers, connected to the module may only be actuated when explosive atmosphere can be excluded.

4. The connecting and disconnecting of the non-intrinsically safe circuits is only permitted during installation, for maintenance or for repair purposes.

The temporal coincidence of explosion hazardous atmosphere and installation, maintenance resp. repair purposes shall be excluded. This is although and in particular valid for the interfaces “CF-Card”, “USB”,

“Fieldbus connection“, “Configuration and programming interface“,

“antenna socket“, “D-Sub“ and the “Ethernet interface“. These interfaces are not energy limited or intrinsically safe circuits. An operating of those circuits is in the behalf of the operator.

5. For the types 750-606, 750-625/000-001, 750-487/003-000, 750-484 and

750-633 the following shall be considered: The interface circuits shall be limited to overvoltage category I/II/III (non mains/mains circuits) as defined in IEC 60664-1.

6. For the type 750-601 the following shall be considered: Do not remove or replace the fuse when the apparatus is energized.

7.

The ambient temperature range is: 0°C ≤ T a

≤ +55°C (For extensions please see the certificate).

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8. The following warnings shall be placed nearby the unit:

Do not remove or replace fuse when energized!

If the module is energized do not remove or replace the fuse.

Do not separate when energized!

Do not separate the module when energized!

Separate only in a non-hazardous area!

Separate the module only in a non-hazardous area!

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13.2.4 ANSI/ISA 12.12.01

This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D or non-hazardous locations only.

This equipment is to be fitted within tool-secured enclosures only.

Explosion hazard!

Explosion hazard - substitution of components may impair suitability for Class I,

Div. 2.

Disconnect device when power is off and only in a non-hazardous area!

Do not disconnect equipment unless power has been switched off or the area is known to be non-hazardous near each operator accessible connector and fuse holder." When a fuse is provided, the following information shall be provided: “A switch suitable for the location where the equipment is installed shall be provided to remove the power from the fuse.”

For devices with ETHERNET connectors:

”Only for use in LAN, not for connection to telecommunication circuits”.

Use only with antenna module 758-910!

Use Module 750-642 only with antenna module 758-910.

For Couplers/Controllers and Economy bus modules only: "The configuration

Interface Service connector is for temporary connection only. Do not connect or disconnect unless the area is known to be nonhazardous. Connection or disconnection in an explosive atmosphere could result in an explosion.

Devices containing fuses must not be fitted into circuits subject to over loads!

Devices containing fuses must not be fitted into circuits subject to over loads, e.g. motor circuits!

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For devices equipped with SD card slots: Insert or remove the SD cards unless the area known to be free of ignitable concentrations of flammable gases or vapors!

Do not connect or disconnect SD-Card while circuit is live unless the area is known to be free of ignitable concentrations of flammable gases or vapors.


Proof of certification is available on request.

Also take note of the information given on the operating and assembly instructions.

The manual, containing these special conditions for safe use, must be readily available to the user.

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List of Figures 195

List of Figures

Figure 1: Fieldbus Node (Example) ...................................................................... 16

Figure 2: Labeling on the Side of a Component (Example).................................. 17

Figure 3: Example of a Manufacturing Number ................................................... 17

Figure 4: Isolation for Fieldbus Couplers/Controllers (Example) ......................... 20

Figure 5: System Supply via Fieldbus Coupler/Controller (left) and via Internal

System Supply Module (right) ..................................................................... 21

Figure 6: System Voltage for Standard Couplers/Controllers and Extended ECO

Couplers ....................................................................................................... 22

Figure 7: Field Supply for Standard Couplers/Controllers and Extended ECO

Couplers ....................................................................................................... 25

Figure 8: Supply Module with Fuse Carrier (Example 750-610) ......................... 27

Figure 9: Removing the Fuse Carrier .................................................................... 28

Figure 10: Opening the Fuse Carrier ..................................................................... 28

Figure 11: Changing the Fuse ............................................................................... 28

Figure 12: Fuse Modules for Automotive Fuses, Series 282 ................................ 29

Figure 13: Fuse Modules for Automotive Fuses, Series 2006 .............................. 29

Figure 14: Fuse Modules with Pivotable Fuse Carrier, Series 281 ....................... 29

Figure 15: Fuse Modules with Pivotable Fuse Carrier, Series 2002 ..................... 29

Figure 16: Power Supply Concept ......................................................................... 30

Figure 17: Supply Example for Standard Couplers/Controllers ........................... 31

Figure 18: Carrier Rail Contact (Example) ........................................................... 35

Figure 19: Examples of the WAGO Shield Connecting System ........................... 37

Figure 20: Application of the WAGO Shield Connecting System ....................... 37

Figure 21: View MODBUS RTU Fieldbus Controller ......................................... 39

Figure 22: Device Supply ...................................................................................... 41

Figure 23: Pin Assignment for D-Sub Fieldbus Connection (Female) ................. 42

Figure 24: Display Elements ................................................................................. 43

Figure 25: Service Interface (closed and opened flap) .......................................... 44

Figure 26: Mode Selector Switch (closed and open damper of the service port) . 45

Figure 27: Rotary Encoder Switch ........................................................................ 46

Figure 28: RS-485 Switches .................................................................................. 54

Figure 29: Internal Terminating Resistors and Interface Switches ....................... 54

Figure 30: Spacing ................................................................................................. 64

Figure 31: Release Tab Standard Fieldbus Coupler/Controller (Example) .......... 67

Figure 32: Insert I/O Module (Example) ............................................................... 68

Figure 33: Snap the I/O Module into Place (Example) ......................................... 68

Figure 34: Removing the I/O Module (Example) ................................................. 69

Figure 35: Data Contacts ....................................................................................... 70

Figure 36: Example for the Arrangement of Power Contacts ............................... 71

Figure 37: Connecting a Conductor to a CAGE CLAMP

®

................................... 72

Figure 38: Run-up of the Fieldbus Controller ....................................................... 74

Figure 39: Example of an Input Process Image .................................................... 77

Figure 40: Example of an Output Image ............................................................... 78

Figure 41: Memory Areas and Data Exchange ..................................................... 81

Figure 42: Example Declaration of Remanent Flags by “var retain” .................... 83

Figure 43: Data Exchange Between MODBUS Master and I/O Modules ............ 88

Figure 44: Data Exchange Between PLC Function (CPU) of the PFC and the I/O

Modules........................................................................................................ 89

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Figure 45: Example of Addressing for a Fieldbus Node ....................................... 93

Figure 46: Target System Settings Dialog ............................................................ 96

Figure 47: Dialog Window “Communication Parameters” ................................. 102

Figure 48: Display Elements ............................................................................... 105

Figure 49: Node Status – I/O LED Signaling ...................................................... 108

Figure 50: Error Message Coding ....................................................................... 108

Figure 51: Function Block for Determining a Fieldbus Failure .......................... 115

Figure 52: Using MODBUS Functions for a Fieldbus Coupler/Controller ........ 119

Figure 53: Side Marking Example for ATEX and IEC Ex Approved I/O Modules

According to CENELEC and IEC ............................................................. 182

Figure 54: Printing Text Detail – Marking Example for ATEX and IEC Ex

Approved I/O Modules According to CENELEC and IEC ....................... 182

Figure 55: Side Marking Example for Ex i and IEC Ex i Approved I/O Modules

According to CENELEC and IEC ............................................................. 183

Figure 56: Text Detail – Marking Example for Ex i and IEC Ex i Approved I/O

Modules According to CENELEC and IEC .............................................. 183

Figure 57: Side Marking Example for I/O Modules According to NEC 500 ..... 185

Figure 58: Text Detail – Marking Example for I/O Modules According to NEC

500.............................................................................................................. 185

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List of Tables 197

List of Tables

Table 1: Variations .................................................................................................. 7

Table 2: Number Notation ..................................................................................... 11

Table 3: Font Conventions .................................................................................... 11

Table 4: Legend for Figure “System Supply via Fieldbus Coupler/Controller (left) and via Internal System Supply Module (right)” ......................................... 21

Table 5: Alignment ................................................................................................ 22

Table 6: Legend for Figure “Field Supply for Standard Couplers/Controllers and

Extended ECO Couplers” ............................................................................ 25

Table 7: Power Supply Modules ........................................................................... 27

Table 8: Filter Modules for 24 V Supply .............................................................. 30

Table 9: Legend for Figure “Supply Example for Fieldbus Coupler/Controller” . 32

Table 10: WAGO Power Supply Units (Selection) ............................................... 33

Table 11: WAGO Ground Wire Terminals ........................................................... 34

Table 12: Key for View of MODBUS RTU Fieldbus Controller ......................... 40

Table 13: Signal Assignment for the RS-485 Interface ........................................ 42

Table 14: Display Elements Fieldbus Status ......................................................... 43

Table 15: Display Elements Node Status .............................................................. 43

Table 16: Display Elements Supply Voltage ........................................................ 43

Table 17: Legend for Figure “Service Interface (closed and opened flap)” ......... 44

Table 18: Legend for Figure „Mode Selector Switch“ .......................................... 45

Table 19: Mode Selector Switch Positions, Static Positions on PowerOn/Reset .. 46

Table 20: Mode Selector Switch Positions, Dynamic Positions During Ongoing

Operation...................................................................................................... 46

Table 21: Rotary Encoder Switch Positions .......................................................... 47

Table 22: Manual Configuration ........................................................................... 53

Table 23: RS-485 Switches ................................................................................... 54

Table 24: Technical Data – Device Data ............................................................... 55

Table 25: Technical Data – System data ............................................................... 55

Table 26: Technical Data – Supply ....................................................................... 55

Table 27: Technical Data – Fieldbus MODBUS RTU .......................................... 56

Table 28: Technical Data – Accessories ............................................................... 56

Table 29: Technical Data – Field Wiring .............................................................. 56

Table 30: Technical Data – Power Jumper Contacts ............................................ 56

Table 31: Technical Data – Data Contacts ............................................................ 56

Table 32: Technical Data – Climatic Environmental Conditions ......................... 57

Table 33: Technical Data – Mechanical Strength acc. to IEC 61131-2 ................ 57

Table 34: Ship approvals ....................................................................................... 59

Table 35: WAGO DIN Rail ................................................................................... 64

Table 36: Data Width for I/O Modules ................................................................. 85

Table 37: IEC-61131-3 Address Areas ................................................................. 86

Table 38: Absolute Addressing ............................................................................. 86

Table 39: Addressing Example ............................................................................. 87

Table 40: Allocation of digital inputs and outputs to process data words in accordance with the ...................................................................................... 88

Table 41: MODBUS Libraries for WAGO-I/OPRO ........................................... 99

Table 42: LED Assignment for Diagnostics ....................................................... 105

Table 43: Fieldbus Diagnostics – Solution in Event of Error ............................. 106

Table 44: Node Status Diagnostics – Solution in Event of Error ........................ 107

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Table 45: Blink Code- Table for the I/O LED Signaling, Error Code 1 ............. 109

Table 46: Blink Code Table for the I/O LED Signaling, Error Code 2 .............. 111




Table 50: Blink Code Table for the 'I/O' LED Signaling, Error Code 7…8 ....... 113


Table 52: Power Supply Status Diagnostics – Solution in Event of Error .......... 114

Table 53: Basic Data Types for the MODBUS Protocol .................................... 117

Table 54: List of the MODBUS Functions in the Fieldbus Coupler/Controller . 118

Table 55: Exception Codes .................................................................................. 120

Table 56: Request Structure for Function Codes FC1 and FC2 .......................... 121

Table 57: Response Structure for Function Codes FC1 and FC2 ....................... 121

Table 58: Input Assignments ............................................................................... 122

Table 59: Exception Structure for Function Codes FC1 and FC2 ...................... 122

Table 60: Request Structure for Function Codes FC3 and FC4 .......................... 122

Table 61: Response Structure for Function Codes FC3 and FC4 ....................... 123

Table 62: Exception Structure for Function Codes FC3 and FC4 ...................... 123

Table 63: Request Structure for Function Code FC5 .......................................... 123

Table 64: Response Structure for Function Code FC5 ........................................ 124

Table 65: Exception Structure for Function Code FC5 ....................................... 124

Table 66: Request Structure for Function Code FC6 .......................................... 124

Table 67: Response Structure for Function Code FC6 ........................................ 125

Table 68: Exception Structure for Function Code FC6 ....................................... 125

Table 69: Request Structure for Function Code FC11 ........................................ 126

Table 70: Response Structure for Function Code FC11 ...................................... 126

Table 71: Exception Structure for Function Code FC11 ..................................... 126



Table 74: Exception Structure for Function code FC15 ...................................... 127







Table 81: Read Register Access (with FC3 and FC4) ......................................... 130

Table 82: Register (Word) Access Writing (with FC6 and FC16) ...................... 130

Table 83: Read bit access (with FC1 and FC2) ................................................... 131

Table 84: Bit access writing (with FC5 and FC15) ............................................. 131

Table 85: MODBUS Registers ............................................................................ 132

Table 86: Register Address 0x1000 .................................................................... 134

Table 87: Register Value 0x1001 ........................................................................ 134








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List of Tables 199

Table 95: Starting Watchdog ............................................................................... 136





Table 100: Register Address 0x1024 .................................................................. 138


Table 102: Register Value 0x1026 ...................................................................... 138






















Table 124: Register Address 0x3000 to 0x3FFF ................................................. 142

Table 125: 1-Channel Digital Input Modules with Status ................................... 144

Table 126: 2-Channel Digital Input Modules ...................................................... 145

Table 127: 2-Channel Digital Input Modules with Diagnostics .......................... 145

Table 128: 2-channel digital input modules with diagnostics and output data ... 145

Table 129: 4-channel digital input modules ........................................................ 146

Table 130: 8-Channel Digital Input Modules ...................................................... 146

Table 131: 16-Channel Digital Input Modules .................................................... 146

Table 132: 1-Channel Digital Output Modules with Input Data ......................... 147

Table 133: 2-Channel Digital Output Modules ................................................... 147

Table 134: 2-Channel Digital Output Modules with Input Data ......................... 147

Table 135: 4-Channel Digital Output Modules 75x-506 with Input Data .......... 148


Table 137: 4-Channel Digital Output Modules 750-532 with Input Data .......... 149


Table 139: 4-Channel Digital Output Modules 750-537 with Input Data .......... 149

Table 140: 16-Channel Digital Output Modules ................................................. 150

Table 141: 8-Channel Digital Input/Output Modules ......................................... 150

Table 142: 1-Channel Analog Input Modules ..................................................... 151



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Table 146: 2-Channel Analog Output Modules .................................................. 153



Table 149: Counter Modules 750-404, 753-404 ................................................. 154


Table 151: Counter Modules 750-404/000-005 .................................................. 155

Table 152: Counter Modules 750-404/000-005 .................................................. 155



Table 155: 3-Phase Power Measurement Modules 750-493 ............................... 156

Table 156: 3-Phase Power Measurement Modules 750-494, -495 ..................... 157

Table 157: 3-Phase Power Measurement Modules 750-494, -495 ..................... 158

Table 158: Pulse Width Modules 750-511 / xxx-xxx ......................................... 158

Table 159: Serial Interfaces with Alternative Data Format ................................ 159

Table 160: Serial Interface with Standard Data Format ...................................... 159

Table 161: Input/Output Process Image of the KNX/EIB/TP1-Module ............. 160

Table 162: Input/Output Process Image “Serial Interface”, Serial Transmission

Mode .......................................................................................................... 161

Table 163: Input/Output Process Image “Serial Interface”, Data Exchange Mode

.................................................................................................................... 161

Table 164: Data Exchange Modules ................................................................... 162

Table 165: SSI transmitter interface modules with alternative data format ........ 162

Table 166: SSI Transmitter Interface Modules with Standard Data Format ....... 163

Table 167: Distance and Angle Measurement Modules ..................................... 163

Table 168: Distance and Angle Measurement Modules ..................................... 163

Table 169: Incremental Encoder Interface 750-634 ............................................ 164

Table 170: Incremental Encoder Interface, 750-634 ........................................... 164

Table 171:Inkremental Encoder Interface, 750-637 ............................................ 164

Table 172: Digitale Impulse Interface, 750-635 ................................................. 165

Table 173: RTC Module, 750-640 ...................................................................... 165

Table 174: Input Process Image, Stepper Module with Mailbox Deactivated .... 166

Table 175: Output Process Image, Stepper Module with Mailbox Activated ..... 166

Table 176: DALI/DSI Master Module 750-641 .................................................. 167

Table 177: DALI/DSI Master Module 750-641 .................................................. 167

Table 178: Overview of Input Process Image in the “Easy” Mode .................... 168

Table 179: Overview of the Output Process Image in the “Easy” Mode ............ 169

Table 180: EnOcean Radio Receiver I/O Module, 750-642 ............................... 170

Table 181: EnOcean Radio Receiver I/O Module, 750-642 ............................... 170

Table 182: Bluetooth

®

RF Transceiver, 750-644 ................................................ 171

Table 183: MP Bus Master Module 750-643 ...................................................... 172

Table 184: Vibration Velocity/Bearing Condition Monitoring VIB I/O, 750-645

.................................................................................................................... 172

Table 185: Input Process Image DC Drive Controller, 750-636 ......................... 173

Table 186: Output Process Image DC Drive Controller, 750-636 ...................... 173

Table 187: Input/Output Process Image, 4-Channel IO Link Master, 750-657 .. 174

Table 188: CAN Gateway Input/Output Process Image, 750-658 ...................... 175

Table 189: CAN Gateway Input/Output Process Image, 750-658 ...................... 176

Table 190: Proportional Valve Module Input Process Image ............................. 177

Table 191: Proportional Valve Module Output Process Image .......................... 177

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List of Tables 201

Table 192: Proportional Valve Module Input Process Image ............................. 178

Table 193: Proportional Valve Module Output Process Image .......................... 178

Table 194: AS Interface Master Module, 750-655 .............................................. 179

Table 195: System Modules with Diagnostics, 750-610, -611 ........................... 180

Table 196: Binary Space Module 750-622 (with Behavior Like 2 Channel Digital

Input) .......................................................................................................... 180

Table 197: Description of Marking Example for ATEX and IEC Ex Approved I/O


Table 198: Description of Marking Example for Ex i and IEC Ex i Approved I/O


Table 199: Description of Marking Example for I/O Modules According to NEC

500.............................................................................................................. 185

Table 200: VDE Installation Regulations in Germany ....................................... 186

Table 201: Installation Regulations in USA and Canada .................................... 186

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WAGO Kontakttechnik GmbH & Co. KG

Postfach 2880 • D-32385 Minden

Hansastraße 27 • D-32423 Minden

Phone: +49/5 71/8 87 – 0

Fax:

E-Mail:

Internet:

+49/5 71/8 87 – 1 69 [email protected] http://www.wago.com

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