WAGO 750-341 User guide

Modular I/O-System

ETHERNET TCP/IP

750-341

Manual

Technical description,
installation and
configuration

Version 1.0.0

ii • General

Copyright © 2004 by WAGO Kontakttechnik GmbH
All rights reserved.

WAGO Kontakttechnik GmbH

Hansastraße 27
D-32423 Minden

Phone: [phone] – 0
Fax: [phone] – 1 69

E-Mail: [e-mail]
Web: http://www.wago.com

Technical Support

Phone: [phone] – 5 55
Fax: [phone] – 85 55

E-Mail: [e-mail]

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

E-Mail: [e-mail]

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

This product includes software developed by the University of California,
Berkley and ist contributors.

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Table of Contents • iii

TABLE OF CONTENTS

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

1.1 Legal Principles........................................................................................1

1.2 Symbols....................................................................................................2

1.3 Font Conventions .....................................................................................3

1.4 Number Notation......................................................................................3

1.5 Safety Notes .............................................................................................4

1.6 Scope ........................................................................................................5

1.7 Important Comments for Starting up........................................................5

1.8 Abbreviation.............................................................................................5

2 The WAGO-I/O-SYSTEM 750.................................................................. 6

2.1 System Description...................................................................................6

2.2 Technical Data.......................................................................................... 7

2.3 Manufacturing Number .......................................................................... 10

2.4 Component Update.................................................................................11

2.5 Storage, Assembly and Transport ..........................................................12

2.6 Mechanical Setup ................................................................................... 12

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

2.8 Grounding............................................................................................... 31

2.9 Shielding (Screening).............................................................................34

2.10 Assembly Guidelines / Standards........................................................... 35

3 Fieldbus Coupler....................................................................................... 36

3.1 Fieldbus Coupler 750-341......................................................................36

4 I/O Modules ...............................................................................................91

4.1 General ...................................................................................................91

4.2 Digital Input Modules ............................................................................91

4.3 Digital Output Modules..........................................................................93

4.4 Analog Intput Modules........................................................................... 94

4.5 Analog Output Modules ......................................................................... 95

4.6 Special Modules ..................................................................................... 95

4.7 System Modules .....................................................................................96

5 ETHERNET...............................................................................................97

5.1 General ................................................................................................... 97

5.2 Network Architecture – Principles and Regulations..............................98

5.3 Network Communication .....................................................................106

6 MODBUS Functions ...............................................................................130

6.1 General ................................................................................................. 130

6.2 Use of the MODBUS Functions........................................................... 132

6.3 Description of the MODBUS Functions ..............................................133

6.4 MODBUS Register Mapping ............................................................... 145

6.5 Internal Variables ................................................................................. 146

WAGO-I/O-SYSTEM 750
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iv • Table of Contents

7 Ethernet/IP (Ethernet/Industrial Protocol)..........................................157

7.1 General ................................................................................................. 157

7.2 Characteristics of the Ethernet/IP Protocol Software........................... 158

7.3 Object model ........................................................................................ 159

8 Application examples.............................................................................. 173

8.1 Test of MODBUS protocol and fieldbus nodes ...................................173

8.2 Visualization and control using SCADA software...............................173

9 Use in Hazardous Environments ...........................................................176

9.1 Foreword ..............................................................................................176

9.2 Protective measures.............................................................................. 176

9.3 Classification meeting CENELEC and IEC......................................... 176

9.4 Classifications meeting the NEC 500................................................... 180

9.5 Identification ........................................................................................182

9.6 Installation regulations ......................................................................... 184

10 Glossary....................................................................................................186

11 Literature List .........................................................................................199

12 Index ......................................................................................................... 200

WAGO-I/O-SYSTEM 750

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Important Comments • 1
Legal Principles

1 Important Comments

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

1.1 Legal Principles

1.1.1 Copyright

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

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

1.1.2 Personnel Qualification

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

1.1.3 Intended Use

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

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

WAGO-I/O-SYSTEM 750
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2 • Important Comments
Symbols

1.2 Symbols

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

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

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

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

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

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

WAGO-I/O-SYSTEM 750

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Important Comments • 3
Font Conventions

1.3 Font Conventions

Italic

Italic

\

END

< >

Courier

1.4 Number Notation

Names of path and files are marked italic
i.e.: C:\programs\WAGO-IO-CHECK

Menu items are marked as bold italic
i.e.: Save

A backslash between two names marks a sequence of
menu items
i.e.: File\New

Press buttons are marked as bold with small capitals
i.e.: ENTER

Keys are marked bold within angle brackets
i.e.: <F5>

Program code is printed with the font Courier.
i.e.: END_VAR

Number Code Example Note

Decimal 100 normal notation

Hexadecimal 0x64 C notation

Binary '100'

'0110.0100'

Within ',
Nibble separated with dots

WAGO-I/O-SYSTEM 750
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4 • Important Comments
Safety Notes

1.5 Safety Notes

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

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

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

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

- installation of the components into an appropriate enclosure

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

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

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

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

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

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

WAGO-I/O-SYSTEM 750

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Important Comments • 5 Scope

1.6 Scope

This manual describes the field bus independent WAGO-I/O-SYSTEM 750
with the fieldbus coupler for ETHERNET 10/100 MBit/s.

Item.-No. Description

750-341 Fieldbus Coupler EtherNet 10/100 MBit/s

1.7 Important Comments for Starting up

Attention

For the start-up of the coupler 750-341 important notes are to be considered,
because it strongly differentiates in some points of starting up the cooupler
750-342.
Read for this the chapter: 3.1.6 “Starting up ETHERNET TCP/IP fieldbus
nodes“.

1.8 Abbreviation

AI
AO
DI
DO
I/O
ID

Analog Input
Analog Output
Digital Input
Digital Output
Input/Output
Identifier

WAGO-I/O-SYSTEM 750
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6 • The WAGO-I/O-SYSTEM 750 System Description

2 The WAGO-I/O-SYSTEM 750

2.1 System Description

The WAGO-I/O-SYSTEM 750 is a modular, fieldbus independent I/O system.
It is comprised of a fieldbus coupler/controller (1) and up to 64 connected
fieldbus modules (2) for any type of signal. Together, these make up the
fieldbus node. The end module (3) completes the node.

Fig. 2-1: Fieldbus node g0xxx00x

Couplers / controllers for fieldbus systems such as PROFIBUS, INTERBUS,
ETHERNET TCP/IP, CAN (CANopen, DeviceNet, CAL), MODBUS, LON
and others are available.

The coupler / controller contains 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 bus 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 communicates via the relevant fieldbus. The
programmable fieldbus controller (PFC) enables the implementation of
additional PLC functions. Programming is done with the WAGO-I/O-PRO 32
in accordance with IEC 61131-3.

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

The WAGO-I/O-SYSTEM 750 has a clear port level with LEDs for status
indication, insertable mini WSB markers and pullout group marker carriers.
The 3-wire technology supplemented by a ground wire connection allows for
direct sensor/actuator wiring.

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The WAGO-I/O-SYSTEM 750 • 7 Technical Data

2.2 Technical Data

Mechanic

Material Polycarbonate, Polyamide 6.6

Dimensions

- Coupler / Controller

- I/O module, single

- I/O module, double

- 51 mm x 65* mm x 100 mm

- 12 mm x 64* mm x 100 mm

- 24 mm x 64* mm x 100 mm

* from upper edge of DIN 35 rail

Installation on DIN 35 with interlock

modular by double featherkey-dovetail

Mounting position any position

Length of entire node

≤ 831 mm

Marking marking label type 247 and 248

paper marking label 8 x 47 mm

Wire range

Wire range CAGE CLAMP® Connection

0,08 mm² ... 2.5 mm²
AWG 28-14
8 – 9 mm Stripped length

Contacts

Power jumpers contacts blade/spring contact

self-cleaning

Current via power contacts

Voltage drop at I

< 1 V/64 modules

max

10 A

max

Data contacts slide contact, hard gold plated

1,5µm, self-cleaning

Climatic environmental conditions

Operating temperature 0 °C ... 55 °C

Storage temperature -20 °C ... +85 °C

Relative humidity 5% to 95 % without condensation

Resistance to harmful substances acc. To IEC 60068-2-42 and IEC 60068-2-43

Maximum pollutant concentration at
relative humidity < 75%

≤ 25 ppm

SO

2

H

S ≤ 10 ppm

2

Special conditions Ensure that additional measures for components are

taken, which are used in an environment involving:
– dust, caustic vapors or gasses
– ionization radiation.

WAGO-I/O-SYSTEM 750
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8 • The WAGO-I/O-SYSTEM 750
Technical Data

Mechanical strength

Vibration resistance acc. to IEC 60068-2-6

Comment to the vibration restistance:
a) Type of oscillation:
sweep with a rate of change of 1 octave per minute
10 Hz ≤ f < 57 Hz, const. Amplitude 0,075 mm
57 Hz ≤ f < 150 Hz, const. Acceleration 1 g
b) Period of oscillation:
10 sweep per axis in each of the 3 vertical axes

Shock resistance acc. to IEC 60068-2-27

Comment to the shock restistance:
a) Type of impulse: half sinusoidal
b) Intensity of impulse:
15 g peak value, 11 ms maintenance time
c) Route of impulse:
3 impulses in each pos. And neg. direction of the
3 vertical axes of the test object, this means
18 impulses in all

Free fall acc. to IEC 60068-2-32

≤ 1m (module in original packing)

Safe electrical isolation

Air and creepage distance acc. to IEC 60664-1

Degree of pollution

2

acc. To IEC 61131-2

Degree of protection

Degree of protection IP 20

Electromagnetic compatibility*

Directive Test values Strength class Evaluation criteria

Immunity to interference acc. to EN 50082-2 (96)

EN 61000-4-2 4kV/8kV (2/4) B

EN 61000-4-3 10V/m 80% AM (3) A

EN 61000-4-4 2kV (3/4) B

EN 61000-4-6 10V/m 80% AM (3) A

Emission of interference acc. to
EN 50081-2 (94)

Measuring
distance

Class

EN 55011 30 dBµV/m (30m) A

37 dBµV/m

Emission of interference acc. to
EN 50081-1 (93)

Measuring
distance

Class

EN 55022 30 dBµV/m (10m) B

37 dBµV/m

* Exception: 750-630, 750-631

WAGO-I/O-SYSTEM 750

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The WAGO-I/O-SYSTEM 750 • 9
Technical Data

Range of
application

Industrial areas EN 50081-2 : 1993 EN 50082-2 : 1996

Residential areas EN 50081-1 : 1993*) EN 50082-1 : 1992

*)

The system meets the requirements on emission of interference in residential areas with
the fieldbus coupler/controller for:

ETHERNET

LonWorks

CANopen

DeviceNet

MODBUS

With a special permit, the system can also be implemented with other fieldbus
couplers/controllers in residential areas (housing, commercial and business areas, small­scale enterprises). The special permit can be obtained from an authority or inspection
office. In Germany, the Federal Office for Post and Telecommunications and its branch
offices issues the permit.

It is possible to use other field bus couplers / controllers under certain boundary
conditions. Please contact WAGO Kontakttechnik GmbH.

Required specification
emission of interference

750-342/-841/-842

750-319/-819

750-337/-837

750-306/-806

750-312/-314/ -315/ -316
750-812/-814/ -815/ -816

Required specification
immunity to interference

Maximum power dissipation of the components

Bus modules 0.8 W / bus terminal (total power dissipation,

system/field)

Fieldbus coupler / controller 2.0 W / coupler / controller

Warning

The power dissipation of all installed components must not exceed the
maximum conductible power of the housing (cabinet).

When dimensioning the housing, care is to be taken that even under high
external temperatures, the temperature inside the housing does not exceed the
permissible ambient temperature of 55 °C.

WAGO-I/O-SYSTEM 750
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10 • The WAGO-I/O-SYSTEM 750
Manufacturing Number

Dimensions

02

01

35

A

B

24V 0V

+

-

A

C

B

D

+

A

C

D

A

C

B

B

D

A

C

D

C

B

D

100

-

51

65

Side view

Fig. 2-2: Dimensions g01xx05 e

2.3 Manufacturing Number

The manufacturing number indicates the delivery status directly after
production.
This number is part of the lateral marking on the component.
In addition, starting from calender week 43/2000 the manufacturing number is
also printed on the cover of the configuration and programming interface of
the fieldbus coupler or controller.

12

24

Dimensions in mm

64

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The WAGO-I/O-SYSTEM 750 • 11 Component Update

PROFIBUS

ITEM-NO.:750-333

ITEM-NO.:750-333

PROFIBUS DP 12 MBd /DPV1

Hansastr. 27

Hansastr. 27

GL

D-32423 Minden

D-32423 Minden

24V DC

24V DC

AWG 28-14

AWG 28-14

55°C max ambient

55°C max ambient

72072

72072

DS

NO

SW

HW

3

0

version

FWL

2

0

0

0

Hardware

LISTED 22ZA AND 22XM

LISTED 22ZA AND 22XM

0103000203-B000000

750-333

WAGO - I/O - SYSTEM

01030002
03-B
060606
72072

Calendar

week

Fig. 2-3: Example: Manufacturing Number of a PROFIBUS fieldbus coupler 750-333

0103000203-B060606

Manufacturing Number

0

1

0

Year Software

PROFIBUS DP 12 MBd /DPV1

-

+

Power Supply

Power Supply
Field

II3GD

II3GD
DEMKO 02 ATEX132273 X

DEMKO 02 ATEX132273 X
EEx nA II T4

EEx nA II T4

3

-B060606

version

Power Supply
Electronic

Electronic

PATENTS PENDING

PATENTS PENDING

Firmware Loader

24 V
0V

0V

version

Internal

Number

g01xx15e

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.

2.4 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), update date (DS), software version (SW), hardware
version (HW) and the firmware loader version (FWL, if available).

Update Matrix

Current Version data for: 1. Update 2. Update 3. Update

Production Order
Number

Datestamp
Software index
Hardware index
Firmware loader

index

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 coupler or controller is
printed on with the current manufacturing and production order number.

NO

DS
SW
HW
FWL

<- Only starting from

Calendar week 13/2004

<- Only for coupler/controller

The original manufacturing data on the housing of the component remain
thereby.

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12 • The WAGO-I/O-SYSTEM 750 Storage, Assembly and Transport

2.5 Storage, Assembly and Transport

Wherever 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.

Statically shielded transport bags with metal coatings are to be used for the
transport of open components for which soiling with amine, amide and
silicone has been ruled out, e.g. 3M 1900E.

2.6 Mechanical Setup

2.6.1 Installation Position

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

Attention
In the case of vertical assembly, an end stop has to be mounted as an
additional safeguard against slipping.
WAGO item 249-116 End stop for DIN 35 rail, 6 mm wide
WAGO item 249-117 End stop for DIN 35 rail, 10 mm wide

2.6.2 Total Expansion

The maximum total expansion of a node is calculated as follows:

Quantity Width Components

1 51 mm coupler / controller

64 12 mm bus modules

- inputs / outputs

- power supply modules

- etc.

1 12 mm end module

sum 831 mm

Warning

WAGO-I/O-SYSTEM 750

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The maximal total expansion of a node must not exceed 831 mm

The WAGO-I/O-SYSTEM 750 • 13
Mechanical Setup

2.6.3 Assembly onto Carrier Rail

2.6.3.1 Carrier rail properties

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

Warning
WAGO 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 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 electro-

magnetic 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 bus 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).

WAGO-I/O-SYSTEM 750
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14 • The WAGO-I/O-SYSTEM 750
Mechanical Setup

2.6.3.2 WAGO DIN Rail

WAGO carrier rails meet the electrical and mechanical requirements.

Item Number Description

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

210-114 /-197 35 x 15; 1.5 mm; steel yellow chromated; slotted/unslotted

210-118 35 x 15; 2.3 mm; steel yellow chromated; unslotted

210-198 35 x 15; 2.3 mm; copper; unslotted

210-196 35 x 7.5; 1 mm; aluminum; unslotted

2.6.4 Spacing

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

Fig. 2-4: Spacing g01xx13x

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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The WAGO-I/O-SYSTEM 750 • 15
Mechanical Setup

2.6.5 Plugging and Removal of the Components

Warning
Before work is done on the components, the voltage supply must be turned
off.

In order to safeguard the coupler/controller from jamming, it should be fixed
onto the carrier rail with the locking disc To do so, push on the upper groove
of the locking disc using a screwdriver.

To pull out the fieldbus coupler/controller, release the locking disc by pressing
on the bottom groove with a screwdriver and then pulling the orange colored
unlocking lug.

Fig. 2-5: Coupler/Controller and unlocking lug g01xx12e

It is also possible to release an individual I/O module from the unit by pulling
an unlocking lug.

Fig. 2-6: removing bus terminal p0xxx01x

Danger
Ensure that an interruption of the PE will not result in a condition which
could endanger a person or equipment!
For planning the ring feeding of the ground wire, please see chapter 2.6.3.

WAGO-I/O-SYSTEM 750
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16 • The WAGO-I/O-SYSTEM 750
Mechanical Setup

2.6.6 Assembly Sequence

All system components can be 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 components are securely
seated on the rail after installing.

Starting with the coupler/controller, the bus modules are assembled adjacent
to each other according to the project planning. Errors in the planning of the
node in terms of the potential groups (connection via the power contacts) are
recognized, as the bus modules with power contacts (male contacts) cannot be
linked to bus modules with fewer power contacts.

Attention
Always link the bus modules with the coupler / controller, and always plug
from above.

Warning
Never plug bus modules from the direction of the end terminal. A ground
wire power contact, which is inserted into a terminal without contacts, e.g. a
4-channel digital input module, has a decreased air and creepage distance to
the neighboring contact in the example DI4.

Always terminate the fieldbus node with an end module (750-600).

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The WAGO-I/O-SYSTEM 750 • 17
Mechanical Setup

2.6.7 Internal Bus / Data Contacts

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

Fig. 2-7: Data contacts p0xxx07x

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

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

WAGO-I/O-SYSTEM 750
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18 • The WAGO-I/O-SYSTEM 750
Mechanical Setup

2.6.8 Power Contacts

Self-cleaning power contacts , are situated on the side of the components
which further conduct the supply voltage for the field side. These contacts
come as touchproof spring contacts on the right side of the coupler/controller
and the bus module. As fitting counterparts the module has male contacts on
the left side.

Danger
The power contacts are sharp-edged. Handle the module carefully to prevent
injury.

Attention
Please take into consideration that some bus modules have no or only a few
power jumper contacts. The design of some modules does not allow them to
be physically assembled in rows, as the grooves for the male contacts are
closed at the top.

Fig. 2-8: Example for the arrangement of power contacts g0xxx05e

Recommendation
With the WAGO ProServe® Software smartDESIGNER, the assembly of a
fieldbus node can be configured. The configuration can be tested via the
integrated accuracy check.

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The WAGO-I/O-SYSTEM 750 • 19
Mechanical Setup

2.6.9 Wire connection

All components have CAGE CLAMP® connections.

The WAGO CAGE CLAMP® connection is appropriate for solid, stranded
and fine–stranded conductors. Each clamping unit accommodates one
conductor.

Fig. 2-9: CAGE CLAMP® Connection g0xxx08x

The operating tool is inserted into the opening above the connection. This
opens the CAGE CLAMP®. Subsequently the conductor can be inserted into
the opening. After removing the operating tool, the conductor is safely
clamped.

More than one conductor per connection is not permissible. If several
conductors have to be made at one connection point, then they should be made
away from the connection point using WAGO Terminal Blocks. The terminal
blocks may be jumpered together and a single wire brought back to the I/O
module connection point.

Attention
If it is unavoidable to jointly connect 2 conductors, then a ferrule must be
used to join the wires together.
Ferrule:
Length 8 mm
Nominal cross section

1 mm2 for 2 conductors with 0.5 mm2

max.

each
WAGO Product 216-103
or products with comparable properties

WAGO-I/O-SYSTEM 750
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20 • The WAGO-I/O-SYSTEM 750
Power Supply

2.7 Power Supply

2.7.1 Isolation

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

• Operational voltage for the fieldbus interface.

• Electronics of the couplers / controllers and the bus modules (internal bus).

• All bus modules have an electrical isolation between the electronics

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

Fig. 2-10: Isolation g0xxx01e

Attention
The ground wire connection must be present in each group. In order that all
protective conductor functions are maintained under all circumstances, it is
recommended that a ground wire be connected at the beginning and end of a
potential group. (ring format, please see chapter "2.8.3"). Thus, if a bus
module comes loose from a composite during servicing, then the protective
conductor connection is still guaranteed for all connected field devices.

When using a joint power supply unit for the 24 V system supply and the
24 V field supply, the electrical isolation between the internal bus and the
field level is eliminated for the potential group.

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The WAGO-I/O-SYSTEM 750 • 21
Power Supply

2.7.2 System Supply

2.7.2.1 Connection

The WAGO-I/O-SYSTEM 750 requires a 24 V direct current system supply
(-15% or +20 %). The power supply is provided via the coupler / controller
and, if necessary, in addition via the internal system supply modules
(750-613). The voltage supply is reverse voltage protected.

Fig. 2-11: System Supply g0xxx02e

The direct current supplies all internal system components, e.g.
coupler/controller electronics, fieldbus interface and bus modules via the
internal bus (5 V system voltage). The 5 V system voltage is electrically
connected to the 24 V system supply.

Fig. 2-12: System Voltage g0xxx06e

Attention
Resetting the system by switching on and off the system supply, must take
place simultaneously for all supply modules (coupler / controller and
750-613).

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22 • The WAGO-I/O-SYSTEM 750
Power Supply

2.7.2.2 Alignment

Recommendation
A stable network supply cannot be taken for granted always and everywhere.
Therefore, regulated power supply units should be used in order to guarantee
the quality of the supply voltage.

The supply capacity of the coupler/controller or the internal system supply
module (750-613) can be taken from the technical data of the components.

Internal current consumption*)

Residual current for bus
terminals*)

*) cf. catalogue W4 Volume 3, manuals or Internet

Example

Current consumption via system voltage:
5 V for electronics of the bus modules and coupler /
controller

Available current for the bus modules. Provided by
the bus power supply unit. See coupler / controller
and internal system supply module (750-613)

Coupler 750-301:
internal current consumption:350 mA at 5V
residual current for
bus modules : 1650 mA at 5V
sum I(5V)

: 2000 mA at 5V

total

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

Attention
If the sum of the internal current consumption exceeds the residual current
for bus modules, then an internal system supply module (750-613) must be
placed before the module where the permissible residual current was
exceeded.

Example:

A node with a PROFIBUS Coupler 750-333 consists of 20 relay
modules (750-517) and 10 digital input modules (750-405).

Current consumption:
20* 90 mA = 1800 mA
10* 2 mA = 20 mA
Sum 1820 mA

The coupler can provide 1650 mA for the bus modules. Consequently,
an internal system supply module (750-613), e.g. in the middle of the
node, should be added.

Recommendation
With the WAGO ProServe® Software smartDESIGNER, the assembly of a
fieldbus node can be configured. The configuration can be tested via the
integrated accuracy check.

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The WAGO-I/O-SYSTEM 750 • 23
Power Supply

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

Coupler/Controller

) can be determined with the following formulas:

(24 V)

I(5 V)

750-613

I(5 V)

= Sum of all the internal current consumption of the connected

total

bus modules
+ internal current consumption coupler / controller

= Sum of all the internal current consumption of the connected

total

bus modules

Input current I(24 V) =

5 V / 24 V * I(5 V)

η = 0.87 (at nominal load)

total

/ η

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

During the test, all outputs, in particular those of the relay modules, must be
active.

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24 • The WAGO-I/O-SYSTEM 750
Power Supply

2.7.3 Field Supply

2.7.3.1 Connection

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

The coupler/controller provides field side power (DC 24V). Power supply
modules are available for other potentials, e.g. AC 230 V. Likewise, with the
aid of the power supply modules, various potentials can be set up. The
connections are linked in pairs with a power contact.

Fig. 2-13: Field Supply (Sensor / Actuator) g0xxx03e

The supply voltage for the field side is automatically passed to the next
module via the power jumper contacts when assembling the bus modules .

The current load of the power contacts must not exceed 10 A on a continual
basis. The current load capacity between two connection terminals is identical
to the load capacity of the connection wires.

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.

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The WAGO-I/O-SYSTEM 750 • 25
Power Supply

Attention
Some bus 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 a field supply is required for subsequent bus modules, then a
power supply module must be used.
Note the data sheets of the bus modules.

In the case of a node setup with different potentials, e.g. the alteration from
DC 24 V to AC 230V, a spacer module should be used. The optical
separation of the potentials acts as a warning to heed caution in the case of
wiring and maintenance works. Thus, the results of wiring errors can be
prevented.

2.7.3.2 Fusing

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

750-601 24 V DC, Supply / Fuse

750-609 230 V AC, Supply / Fuse

750-615 120 V AC, Supply / Fuse

750-610 24 V DC, Supply / Fuse / Diagnosis

750-611 230 V AC, Supply / Fuse / Diagnosis

Fig. 2-14: Supply module with fuse carrier (Example 750-610) g0xxx09x

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26 • The WAGO-I/O-SYSTEM 750
Power Supply

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

For UL approved systems only use UL approved fuses.

In order to insert or change a fuse, or to switch off the voltage in succeeding
bus 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.

Fig. 2-15: Removing the fuse carrier p0xxx05x

Lifting the cover to the side opens the fuse carrier.

Fig. 2-16: Opening the fuse carrier p0xxx03x

Fig. 2-17: Change fuse p0xxx04x

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

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The WAGO-I/O-SYSTEM 750 • 27
Power Supply

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

Fig. 2-18: Fuse modules for automotive fuses, Series 282 pf66800x

Fig. 2-19: Fuse modules with pivotable fuse carrier, Series 281 pe61100x

Fig. 2-20: Fuse modules, Series 282 pf12400x

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28 • The WAGO-I/O-SYSTEM 750
Power Supply

2.7.4 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-volt supply are required for the certified operation of the
system.

Item No. Name Description

750-626 Supply filter Filter module for system supply and field supply (24 V,

0 V), i.e. for field bus 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.

Fig. 2-21: Power supply concept g01xx11e

Note
Another potential power terminal 750-601/602/610 must only be used behind
the filter terminal 750-626 if the protective earth conductor is needed on the
lower power contact or if a fuse protection is required.

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The WAGO-I/O-SYSTEM 750 • 29
Power Supply

2.7.5 Supply example

Note
The system supply and the field supply should be separated in order to ensure
bus operation in the event of a short-circuit on the actuator side.

L1
L2
L3
N
PE

a)

1)

b)

c)

1)
d)

System
Supply

Field
Supply

Field
Supply

230V

230V

24V

24V

10 A

750-613

2) 2)

10 A

750-512 750-512750-616 750-513 750-610 750-552 750-600750-612 750-616

750-630750-400 750-410 750-401

Shield (screen) bus

Main ground bus

1) Separation module
recommended

2) Ring-feeding
recommended

a) Power Supply

on coupler / controller
via external Supply
Module

b) Internal System

Supply Module

c) Supply Module

passive

d)

Supply Module

with fuse carrier/

iagnostics

d

Fig. 2-22: Supply example g0xxx04e

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30 • The WAGO-I/O-SYSTEM 750
Power Supply

2.7.6 Power Supply Unit

The WAGO-I/O-SYSTEM 750 requires a 24 V direct current system supply
with a maximum deviation of -15% or +20 %.

Recommendation
A stable network supply cannot be taken for granted always and everywhere.
Therefore, regulated power supply units should be used in order to guarantee
the quality of the supply voltage.

A buffer (200 µF per 1 A current load) should be provided for brief voltage
dips. The I/O system buffers for approx 1 ms.

The electrical requirement for the field supply is to be determined individually
for each power supply point. Thereby all loads through the field devices and
bus modules should be considered. The field supply as well influences the bus
modules, as the inputs and outputs of some bus modules require the voltage of
the field supply.

Note
The system supply and the field supply should be isolated from the power
supplies in order to ensure bus operation in the event of short circuits on the
actuator side.

WAGO products
Article No.

787-903 Primary switched - mode, DC 24 V, 5 A

787-904 Primary switched - mode, DC 24 V, 10 A

787-912 Primary switched - mode, DC 24 V, 2 A

288-809
288-810
288-812
288-813

Description

wide input voltage range AC 85-264 V
PFC (Power Factor Correction)

wide input voltage range AC 85-264 V
PFC (Power Factor Correction)

wide input voltage range AC 85-264 V
PFC (Power Factor Correction)

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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The WAGO-I/O-SYSTEM 750 • 31 Grounding

2.8 Grounding

2.8.1 Grounding the DIN Rail

2.8.1.1 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 electronic connection is established via the
screw. Thus, the carrier rail is grounded.

Attention

2.8.1.2 Insulated Assembly

Care must be taken to ensure the flawless electrical connection between the
carrier rail and the frame or housing in order to guarantee sufficient
grounding.

Insulated assembly has been achieved when there is constructively no direct
conduction connection between the cabinet frame or machine parts and the
carrier rail. Here the earth must be set up via an electrical conductor.

The connected grounding conductor should have a cross section of at least
4 mm2.

Recommendation
The optimal insulated setup is a metallic assembly plate with grounding
connection with an electrical conductive link with the carrier rail.

The separate grounding of the carrier rail can be easily set up with the aid of
the WAGO ground wire terminals.

Article No. Description

283-609 Single-conductor ground (earth) terminal block make an automatic

contact to the carrier rail; conductor cross section: 0.2 -16 mm2
Note: Also order the end and intermediate plate (283-320)

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32 • The WAGO-I/O-SYSTEM 750
Grounding

2.8.2 Grounding Function

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

Fig. 2-23: Carrier rail contact g0xxx10e

Attention
Care must be taken 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, please see chapter 2.6.3.2.

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The WAGO-I/O-SYSTEM 750 • 33
Grounding

2.8.3 Grounding Protection

For the field side, the ground wire is connected to the lowest connection
terminals of the power supply module. The ground connection is then
connected to the next module via the Power Jumper Contact (PJC). If the bus
module has the lower power jumper contact, then the ground wire connection
of the field devices can be directly connected to the lower connection
terminals of the bus module.

Attention
Should the ground conductor connection of the power jumper contacts within
the node become disrupted, e.g. due to a 4-channel bus terminal, the ground
connection will need to be re-established.

The ring feeding of the grounding potential will increase the system safety.
When one bus module is removed from the group, the grounding connection
will remain intact.

The ring feeding method has the grounding conductor connected to the
beginning and end of each potential group.

Fig. 2-24: Ring-feeding g0xxx07e

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34 • The WAGO-I/O-SYSTEM 750
Shielding (Screening)

2.9 Shielding (Screening)

2.9.1 General

The shielding of the data and signal conductors reduces electromagnetic
interferences thereby increasing the signal quality. Measurement errors, data
transmission errors and even disturbances caused by overvoltage can be
avoided.

Attention
Constant shielding is absolutely required in order to ensure the technical
specifications in terms of the measurement accuracy.

The data and signal conductors should be separated from all high-voltage
cables.

The cable shield should be potential. With this, incoming disturbances can be
easily diverted.

The shielding should be placed over the entrance of the cabinet or housing in
order to already repel disturbances at the entrance.

2.9.2 Bus Conductors

The shielding of the bus conductor is described in the relevant assembly
guideline of the bus system.

2.9.3 Signal Conductors

Bus modules for most analog signals along with many of the interface bus
modules include a connection for the shield.

Note
For better shield performance, the shield should have previously been placed
over a large area. The WAGO shield connection system is suggested for such
an application.
This suggestion is especially applicable when the equipment can have even
current or high impulse formed currents running through it (for example
through atmospheric end loading).

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The WAGO-I/O-SYSTEM 750 • 35 Assembly Guidelines / Standards

2.9.4 WAGO Shield (Screen) Connecting System

The WAGO Shield Connecting system includes a shield clamping saddle, a
collection of rails and a variety of mounting feet. Together these allow many
dfferent possibilities. See catalog W4 volume 3 chapter 10.

Fig. 2-25: WAGO Shield (Screen) Connecting System p0xxx08x, p0xxx09x, and p0xxx10x

Fig. 2-26: Application of the WAGO Shield (Screen) Connecting System p0xxx11x

2.10 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 – switch box combinations

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36 • Fieldbus Coupler 750-341 WAGO Shield (Screen) Connecting System

3 Fieldbus Coupler

3.1 Fieldbus Coupler 750-341

This chapter includes:

3.1.1 Description......................................................................................... 37

3.1.2 Hardware............................................................................................38

3.1.2.1 View.............................................................................................. 38

3.1.2.2 Device supply................................................................................39

3.1.2.3 Fieldbus connection ......................................................................39

3.1.2.4 Display Elements ..........................................................................40

3.1.2.5 Configuration interface ................................................................. 40

3.1.2.6 Hardware address (MAC-ID) ....................................................... 41

3.1.3 Operating system ...............................................................................41

3.1.4 Process image .................................................................................... 42

3.1.4.1 Example of a Process Input Image................................................ 44

3.1.4.2 Example of a Process Output Image ............................................. 45

3.1.4.3 Fieldbus specific Process Data Architecture for MODBUS/TCP 46

3.1.5 Data Exchange...................................................................................60

3.1.5.1 Memory areas................................................................................61

3.1.5.2 Addressing the I/O modules.......................................................... 62

3.1.5.3 Data exchange between MODBUS master and I/O modules .......62

3.1.5.4 Data Exchange between Ethernet IP Master and I/O Modules .... 64

3.1.6 Starting up ETHERNET TCP/IP fieldbus nodes...............................68

3.1.6.1 Note the MAC-ID and establish the fieldbus node.......................68

3.1.6.2 Connecting PC and fieldbus node.................................................69

3.1.6.3 Determining IP addresses ............................................................. 69

3.1.6.4 Allocating the IP address to the fieldbus node ............................. 70

3.1.6.5 Testing the function of the fieldbus node ..................................... 73

3.1.6.6 Deactivating the BootP Protocol...................................................73

3.1.6.7 Information on the web-based management system.....................75

3.1.7 LED Display ...................................................................................... 80

3.1.7.1 Blink code ..................................................................................... 80

3.1.7.2 Fieldbus status............................................................................... 81

3.1.7.3 Node status....................................................................................81

3.1.7.4 Fault message via blink code from the ‘I/O‘-LED .......................83

3.1.7.5 Supply voltage status ....................................................................88

3.1.8 Fault behavior .................................................................................... 89

3.1.8.1 Fieldbus failure ............................................................................. 89

3.1.8.2 Internal bus fault ...........................................................................89

3.1.9 Technical Data...................................................................................90

WAGO-I/O-SYSTEM 750

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Fieldbus Coupler 750-341 • 37 Description

3.1.1 Description

The fieldbus coupler 750-341 displays the peripheral data of all I/O modules
in the WAGO-I/O-SYSTEM 750 on ETHERNET.

When power is applied to the fieldbus coupler, it automatically detects all I/O
modules connected to the coupler and creates a local process image. This can
be a mixture of analog and digital modules. The process image is subdivided
into an input and an output data area.

The data of the analog modules is mapped first into the process image. The
modules are mapped in the order of their position after the coupler. The
digital modules are grouped after the analog modules, in the form of words
(16 bits per word). When the number of digital I/O’s exceeds 16 bits, the
coupler automatically starts another word.

The user has access to all field bus and I/O data.

All sensor input signals are grouped in the coupler (slave) and transferred to
the higher ranking controls (master) via the fieldbus. Process data linking is
performed in the higher ranking controls. The controls put out the resulting
data to the actuators via the bus and the node.
The ETHERNET fieldbus coupler is suitable for data rates of 10 Mbit/s and
100 MBit/s.

To be able to send/receive process data via ETHERNET, the coupler supports
a series of network protocols. For the exchange of process data, the
MODBUS TCP (UDP)- protocol and the Ethernet/IP protocol are available.
However, the two communication protocols cannot be used together.

The protocol HTTP, BootP, DHCP, DNS, SNTP, FTP and SNMP are
provided for the management and diagnosis of the system.

The coupler has an internal server for web-based applications. By default, the
coupler’s built-in HTML pages contain information on the configuration and
status of the fieldbus node, and can be read using a normal web browser. In
addition, a file system is implemented that allows you to store custom HTML
pages in the coupler using FTP download.

WAGO-I/O-SYSTEM 750
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38 • Fieldbus Coupler 750-341
Hardware

3.1.2 Hardware

3.1.2.1 View

status
voltage supply

-power jumper contacts

-system

data contacts

supply
24V
0V

supply via
power jumper contacts
24V

0V

power jumper contacts

fieldbus

connection

RJ 45

open

flap

configuration

interface

ETHERNET

LINK

MS

NS

TxD/RxD

I/O

750-341

01 02

A

B

24V 0V

++

--

C

D

Fig. 3.1-1: Fieldbus coupler ETHERNET TCP/IP g034100e

The fieldbus coupler is comprised of:

• Supply module which includes the internal system supply as well as power

jumper contacts for the field supply via I/O module assemblies.

• Fieldbus interface with the bus connection RJ 45

• Display elements (LED's) for status display of the operation, the bus

communication, the operating voltages as well as for fault messages and
diagnosis

• Configuration Interface

• Electronics for communication with the I/O modules (internal bus) and the

fieldbus interface

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Fieldbus Coupler 750-341 • 39
Hardware

3.1.2.2 Device supply

The supply is made via terminal bocks with CAGE CLAMP® connection. The
device supply is intended both for the system and the field units

1

2

3

ELECTRONIC

FiELDBUS INTERFACE

750-341

4

Fig. 3.1-2: Device supply G034101e

The integrated internal system supply module generates the necessary voltage
to supply the electronics and the connected I/O modules.
The fieldbus interface is supplied with electrically isolated voltage from the
internal system supply module.

3.1.2.3 Fieldbus connection

5

6

7

8

24V/0V

24 V

0V

24 V

0V

24 V

0V

10 nF

10 nF

DC

DC

ELECTRONIC

FiELDBUS

INTERFACE

I/O

MODULES

Connection to the fieldbus is by a RJ45 connector. The RJ45 socket on the
fieldbus coupler is wired per the 100BaseTX standard. The specification for
the connecting cable is a twisted pair cable of Category 5. Cables of type S­UTP (Screened-Unshielded Twisted Pair) and STP (Shielded Twisted Pair)
with a maximum segment length of 100 meters may be used.

The RJ45 socket is physically lowered for the coupler to fit in an 80 mm high
switch box once connected.

The electrical isolation between the fieldbus system and the electronics is
achieved by DC/DC converters and optocouplers in the fieldbus interface.

Contact Signal

1 TD + Transmit +
2 TD - Transmit ­3 RD + Receive +
4 free
5 free
6 RD - Receive ­7 free

Fig. 3.1-1: RJ45-Connector and RJ45 Connector Configuration

8 free

WAGO-I/O-SYSTEM 750
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40 • Fieldbus Coupler 750-341
Hardware

3.1.2.4 Display Elements

The operating condition of the coupler 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).

ETHERNET

ETHERNET

LINK

LINK

MS

MS

NS

NS

TxD/RxD

TxD/RxD

I/O

I/O

USR

Fig. 3.1-3: Display Elements 750-341 g034102x

01

01

A

A

A

A

B

B

B

B

24V 0V

24V 0V

++

++

02

02

C

C

C

C

D

D

ETHERNET

C

C
A

A

LINK

MS

NS

TxD/RxD

I/O

01

A

A

B

B

24V 0V

++

02

C

C

A

D

B

LED Color Meaning

LINK green Link to a physical network exists
MS red/green The ‚MS‘-LED indicates the state of the node (Module State)
NS red/green The ‚NS‘-LED indicates the state of the network (Network State)
TxD/RxD green Data exchange taking place
IO red /green

/ orange

The 'I/O'-LED indicates the operation of the node and signals faults
encountered

A green Status of the operating voltage – system

C or B green Status of the operating voltage – power jumper contacts

(LED position is manufacturing dependent)

3.1.2.5 Configuration interface

The configuration interface used for the communication with WAGO-I/O­CHECK or for firmware download is located behind the cover flap.

open

flap

Configuration interface

Fig. 3.1-2: Configuration interface g012945e

The communication cable (750-920) is connected to the 4 pole header.

WAGO-I/O-SYSTEM 750

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Fieldbus Coupler 750-341 • 41
Operating system

3.1.2.6 Hardware address (MAC-ID)

Each WAGO ETHERNET fieldbus coupler is provided from the factory with
a unique and internationally unambiguous physical ETHERNET address, also
referred to as MAC-ID (Media Access Control Identity). This address is to be
found on the rear of the coupler and on an adhesive tear-off label on the side
of the coupler. The address has a fixed length of 6 Bytes (48 Bit) and contains
the address type, the manufacturer’s ID, and the serial number.

3.1.3 Operating system

Following is the configuration of the master activation and the electrical
installation of the fieldbus station to start up the system.

After switching on the supply voltage, the coupler determines the I/O modules
and the present configuration.

In the event of a fault, the coupler changes to the "Stop" condition. The "I/O"
LED flashes red. After a fault free start up, the coupler changes to the
"Fieldbus start" status and the "I/O" LED lights up green.

Switching on the

supply voltage

Initialization,

Determination of the I/O modules

and the configuration,

“I/O” LED is blinking red

Test o.k.?

Yes

Fieldbus coupler is

in operating mode

“I/O” LED is shining green

Fig. 3.1-3: Operating system 750-341 g012920e

No

Stop

red “I/O” LED indicates

blink code

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

42 • Fieldbus Coupler 750-341
Process image

3.1.4 Process image

After switching on, the coupler recognizes all I/O modules plugged into the
node which supply or wait for data (data width/bit width > 0).
The maximal length of a node is limited to 64 I/O modules.

Note

Use of the WAGO 750-628 Bus Extension Coupler Module and the 750-627
Extension End Module enables support of up to 255 I/O modules on the
750-341 coupler.

Note!
Expansion to 255 I/O modules is not enabled in the initial version of the
750-341 Fieldbus coupler.

Note

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

The coupler produces an internal process image from the data width and the
type of I/O module as well as the position of the I/O modules in the node. It is
divided into an input and an output data area.

The data of the digital I/O modules is bit orientated, i.e. the data exchange is
made bit for bit. The analog I/O modules are representative for all byte
orientated I/O modules, i.e. those where the data exchange is made byte for
byte. These I/O modules include for example the counter modules, I/O
modules for angle and path measurement as well as the communication
modules.

The data of the I/O modules is separate from the local input and output
process image in the sequence of their position after the coupler in the
individual process image.
First, all the byte oriented bus modules and then the bit oriented bus modules
are stored in the process image. The bits of the digital modules are grouped to
form bytes. As soon as the number of digital I/O’s exceeds 8 bits, the coupler
automatically starts the next byte.

Note
A process image restructuring may result if a node is changed. In this case the
process data addresses also change in comparison with earlier ones. In the
event of adding modules, take the process data of all previous modules into
account.

The process image for physical input and output data is stored in the first 256
words of memory (word 0 to 255). This memory actually consists of a
separate area for the input and output data, but both areas are referenced in a
PLC program with an index of 0 to 255 for word operations.

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 43
Process image

If the quantity of I/O data is greater than 256 words, the additional data is
appended at the end of the process image in word 256 to 511.

In contrast to the above, access from the fieldbus side is fieldbus specific. For
the ETHERNET TCP/IP fieldbus coupler, either a MODBUS/TCP master or
an Ethernet/IP master is used. MODBUS/TCP accesses the data via
implemented MODBUS functions. Here decimal and/or hexadecimal
MODBUS addresses are used. With Ethernet/IP, data access occurs with the
use of an object model.

Further information
A detailed description of these fieldbus-specific data access operations is
given in the sections “MODBUS functions” and “Ethernet/IP
(Ethernet/Industrial Protocol)”.

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

44 • Fieldbus Coupler 750-341
Process image

3.1.4.1 Example of a Process Input Image

The following figure is an example of a process input image. The
configuration includes 16 digital and 8 analog inputs. Therefore, the process
image has a total data length of 9 words (8 words for the analog data and 1
word for the digital inputs).

Input modules 750- 402 402 472 472 402 476 402 476

Process input image

(Word)

MODBUS addresses

0x0000
0x0001

0x0002
0x0003

0x0004
0x0005

0x0006
0x0007

0x0008

Highbyte

Word1
Word2Word2

Word1
Word2

Word1
Word2

Word1
Word2

Lowbyte

Process input image

(Bit)

MODBUS addresses

0x0000

0x0001

0x0002
0x0003

ETHERNET

LINK

MS

NS

TxD/RxD

I/O

750-341

Bit 4

DI

Bit 1

DI

4

1

AI

Word1
Word2

AI

Word1
Word2

AI

Word1
Word2

DI

4

1

AI

Word1
Word2

DI

1411

0x00040x0004
0x00050x0005
0x00060x0006

0x00070x0007

0x0008
0x0009
0x000A

0x000B

0x000C
0x000D
0x000E

0x000F

DI: Digital Input
AI:Analog Input

Fig. 3.1-4: Example of a Process Input Image G012924e

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 45
Process image

3.1.4.2 Example of a Process Output Image

The following figure is an example of a process output image. The
configuration includes 2 digital and 4 analog outputs. Therefore, the process
image has a total data length of 5 (4 words for the analog data and 1 word for
the digital outputs). When using MODBUS protocol, output data can be read
back with an offset of 200

(0x0200) added to the MODBUS address.

hex

Note

All output data over 256 words can be read back with an offset of 1000
(0x1000) added onto the MODBUS address.

AO

AO

ETHERNET

LINK

MS

NS

TxD/RxD

I/O

DO

750-341

hex

Output modules 750 - 501 550 550

Bit 1

Word1

Word1

Word2

Process output image

(Word)

MODBUS addresses

0x0000 / 0x0200
0x0001 / 0x0201

0x0002 / 0x0202
0x0003 / 0x0203

0x0004 /
0x0204

Process input image

MODBUS addresses

0x0200
0x0201

0x0202
0x0203

0x0204

Process output image

MODBUS addresses

0x0000 / 0x0200

0x0001 / 0x0201

Process input image

MODBUS addresses

0x0200

0x0201

Highbyte

(Word)

Highbyte

(Bit)

(Bit)

Word1
Word2

Word1
Word2

Lowbyte

Word1
Word2

Word1
Word2

Lowbyte

Bit 2

DO: Digital Output

AO: Analog Output

Word2

Fig. 3.1-5: Example of a Process Output Image G012925e

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

46 • Fieldbus Coupler 750-341
Process image

3.1.4.3 Fieldbus specific Process Data Architecture for MODBUS/TCP

With some I/O modules, the structure of the process data is fieldbus specific.

In the case of an Ethernet TCP/IP coupler, the process image uses a word
structure (with word alignment). The internal mapping method for data greater
than one byte conforms to the Intel format.

The following section describes the process image for various WAGO-I/O­SYSTEM 750 I/O modules when using an Ethernet TCP/IP coupler.

Note
Depending on the specific position of an I/O module in the fieldbus node, the
process data of all previous byte or bit-oriented modules must be taken into
account to determine its location in the process data map.

3.1.4.3.1 Digital Input Modules

Digital input modules supply one bit of data per channel to specify the signal
state for the corresponding channel. These bits are mapped into the Input
Process Image.

When analog input modules are also present in the node, the digital data is
always appended after the analog data in the Input Process Image, grouped
into bytes.

Some digital modules have an additional diagnostic bit per channel in the
Input Process Image. The diagnostic bit is used for detecting faults that occur
(e.g., wire breaks and/or short circuits).

1 Channel Digital Input Module with Diagnostics

750-435

Input Process Image

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

Diagnostic

bit

S 1

Data bit

DI 1

2 Channel Digital Input Modules

750-400, -401, -405, -406, -410, -411, -412, -427, 438

Input Process Image

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

Data bit

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

DI 2

Channel

2

Data bit

DI 1

Channel

1

Fieldbus Coupler 750-341 • 47
Process image

2 Channel Digital Input Modules with Diagnostics

750-419, -421, -424, -425

Input Process Image

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

Diagnostic

bit S 2

Channel 2

Diagnostic

bit S 1

Channel 1

Data bit

DI 2

Channel

2

Data bit

DI 1

Channel

1

2 Channel Digital Input Module with Diagnostics and Output Process
Data

750-418

The 750-418 digital input module supplies a diagnostic and acknowledge bit
for each input channel. If a fault condition occurs, the diagnostic bit is set.
After the fault condition is cleared, an acknowledge bit must be set to re­activate the input. The diagnostic data and input data bit is mapped in the
Input Process Image, while the acknowledge bit is in the Output Process
Image.

Input Process Image

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

Diagnostic

Output Process Image

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

bit S 2

Channel 2

Acknowled

gement bit

Q 2

Channel 2

Diagnostic

bit S 1

Channel 1

Acknowled

gement bit

Q 1

Channel 1

Data bit

DI 2

Channel

2

0 0

Data bit

DI 1

Channel

4 Channel Digital Input Modules

750-402, -403, -408, -409, -414, -415, -422, -423, -428, -432, -433

Input Process Image

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

Data bit

DI 4

Channel

4

Data bit

DI 3

Channel

3

Data bit

DI 2

Channel

2

Data bit

DI 1

Channel

1

1

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

48 • Fieldbus Coupler 750-341
Process image

8 Channel Digital Input Modules

750-430, -431

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

Data bit

DI 8

Channel

8

Data bit

DI 7

Channel

7

Data bit

DI 6

Channel

6

3.1.4.3.2 Digital Output Modules

Digital output modules use one bit of data per channel to control the output of
the corresponding channel. These bits are mapped into the Output Process
Image.

When analog output modules are also present in the node, the digital image
data is always appended after the analog data in the Output Process Image,
grouped into bytes.

Input Process Image

Data bit

DI 5

Channel

Data bit

DI 4

Channel

5

4

Data bit

DI 3

Channel

3

Data bit

DI 2

Channel

2

Data bit

DI 1

Channel

1

1 Channel Digital Output Module with Input Process Data

750-523

Input Process Image

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

Output Process Image

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

not

used

not used

Status bit

„Manual

Operation“

controls

DO 1

Channel

2 Channel Digital Output Modules

750-501, -502, -509, -512, -513, -514, -517, -535

1

Output Process Image

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

controls

DO 2

Channel

2

controls

DO 1

Channel

1

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 49
Process image

2 Channel Digital Input Modules with Diagnostics and Input Process
Data

750-507, -522

The 750-507 and 750-522 digital output modules have a diagnostic bit for
each output channel. When an output fault condition occurs (i.e., overload,
short circuit, or broken wire), a diagnostic bit is set. The diagnostic data is
mapped into the Input Process Image, while the output control bits are in the
Output Process Image.

Input Process Image

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

Output Process Image

Diagnostic

bit S 2

Channel 2

Diagnostic

bit S 1

Channel 1

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

controls

DO 2

Channel

controls

DO 1

Channel

2

1

750-506

The 750-506 digital output module has 2-bits of diagnostic information for
each output channel. The 2-bit diagnostic information can then be decoded to
determine the exact fault condition of the module (i.e., overload, a short
circuit, or a broken wire). The 4-bits of diagnostic data are mapped into the
Input Process Image, while the output control bits are in the Output Process
Image.

Input Process Image

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

Diagnostic

bit S 3

Channel 2

Diagnostic

bit S 2

Channel 2

Diagnostic

bit S 1

Channel 1

Diagnostic

bit S 0

Channel 1

Output Process Image

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

controls

not used not used

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

DO 2

Channel

controls

DO 1

Channel

2

1

50 • Fieldbus Coupler 750-341
Process image

4 Channel Digital Output Modules

750-504, -516, -519, -531

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

8 Channel Digital Output Module

750-530

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

controls

DO 8

Channel

8

controls

DO 7

Channel

7

controls

DO 6

Channel

6

Output Process Image

controls

DO 4

Channel

4

Output Process Image

controls

DO 5

Channel

controls

DO 4

Channel

5

4

controls

DO 3

Channel

3

controls

DO 3

Channel

3

controls

DO 2

Channel

2

controls

DO 2

Channel

2

controls

DO 1

Channel

1

controls

DO 1

Channel

1

3.1.4.3.3 Analog Input Modules

The hardware of an analog input module has 16 bits of measured analog data
per channel and 8 bits of status. However, the Ethernet coupler does not have
access to the 8 status bits. Therefore, the Ethernet coupler can only access the
16 bits of analog data per channel, which are grouped as words and mapped in
Intel format in the Input Process Image.

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.

1 Channel Analog Input Module

750-491

Byte Destination

Offset

High Byte Low Byte

0 D1 D0 Measured Value UD

Input Process Image

Remark

1 D3 D2 Measured Value U

ref

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 51
Process image

2 Channel Analog Input Modules

750-452, -454, -456, -461, -465, -466, -467, -469, -470, -472, -473, -474, -475,

-476, -477, -478, -479, -479/000-001, -480, -480/000-001, -483, -485, -492

Input Process Image

Offset

Byte Destination

High Byte Low Byte

0 D1 D0 Measured Value Channel 1

1 D3 D2 Measured Value Channel 2

4 Channel Analog Input Modules

750-453, -455, -457, -459, -460, -468

Byte Destination

Offset

High Byte Low Byte

0 D1 D0 Measured Value Channel 1

1 D3 D2 Measured Value Channel 2

2 D5 D4 Measured Value Channel 3

3 D7 D6 Measured Value Channel 4

3.1.4.3.4 Analog Output Modules

Remark

Input Process Image

Remark

The hardware of an analog output module has 16 bits of analog output data per
channel and 8 status bits. However, the Ethernet coupler does not have access
to the 8 status bits. Therefore, the Ethernet coupler can only supply the 16 bits
of analog data per channel, which is grouped as words and mapped in Intel
format in the Output Process Image.

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.

2 Channel Analog Output Modules

750-550, -552, -554, -556, -560, -585

Output Process Image

Offset

0 D1 D0 Output Value Channel 1

1 D3 D2 Output Value Channel 2

Byte Destination

Remark

High Byte Low Byte

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

52 • Fieldbus Coupler 750-341
Process image

4 Channel Analog Output Modules

750-551, -557, -559

Output Process Image

Offset

0 D1 D0 Output Value Channel 1

1 D3 D2 Output Value Channel 2

2 D5 D4 Output Value Channel 3

3 D7 D6 Output Value Channel 4

Byte Destination

High Byte Low Byte

3.1.4.3.5 Specialty Modules

WAGO has a host of Specialty I/O modules that perform various functions.
Most of these modules contain control and status memory, as well as input and
output data memory. These memory addresses allow for bi-directional
exchange of data between the coupler and the I/O module. With this
architecture, it is possible to preset a counter value by means of a control byte
or use a status byte to detect a undershoot or overshoot condition. When a
specialty module has a control/status byte, it is always the low byte of a word.

Further information
For detailed information about the structure of a particular module’s
control/status byte, please refer to that module’s manual. Manuals for each
module can be found on the Internet under:
http://www.wago.com.

Remark

Counter Modules

750-404, /000-000, /000-001, /000-002, /000-003, /000-004
The above 750-404 Counter Modules have a total of 5 bytes of user data in

both the Input and Output Process Image (4 bytes of counter data and 1 byte
of control/status). The counter value is supplied as 32 bits. The following
tables illustrate the Input and Output Process Image, which has 3 words
mapped into each image. Word alignment is applied.

Input Process Image

Offset

0 - S Status byte

1 D1 D0

2 D3 D2

Byte Destination

Remark

High Byte Low Byte

Counter Value

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 53
Process image

Output Process Image

Offset

0 - C Control byte

1 D1 D0

2 D3 D2

Byte Destination

Remark

High Byte Low Byte

Counter Setting Value

750-404/000-005

The above 750-404 counter modules have a total of 5 bytes of user data in
both the Input and Output Process Image (4 bytes of counter data and 1 byte of
control/status). The two counter values are supplied as 16 bits. The following
tables illustrate the Input and Output Process Image, which has 3 words
mapped into each image. Word alignment is applied.

Input Process Image

Offset

0 - S Status byte

Byte Destination

Remark

High Byte Low Byte

1 D1 D0 Counter Value of Counter 1

2 D3 D2 Counter Value of Counter 2

Output Process Image

Offset

0 - C Control byte

1 D1 D0 Counter Setting Value of Counter 1

2 D3 D2 Counter Setting Value of Counter 2

Byte Destination

Remark

High Byte Low Byte

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

54 • Fieldbus Coupler 750-341
Process image

750-638
The 750-638 counter module has a total of 6 bytes of user data in both the

Input and Output Process Image (4 bytes of counter data and 2 bytes of
control/status). The two counter values are supplied as 16 bits. Each counter
has its own control/status byte. The following tables illustrate the Input and
Output Process Image, which has 4 words mapped into each image. Word
alignment is applied.

Input Process Image

Offset

0 - S0 Status byte of Counter 1

1 D1 D0 Counter Value of Counter 1

2 - S1 Status byte of Counter 2

3 D3 D2 Counter Value of Counter 2

Offset

0 - C0 Control byte of Counter 1

1 D1 D0 Counter Setting Value of Counter 1

2 - C1 Control byte of Counter 2

3 D3 D2 Counter Setting Value of Counter 2

Byte Destination

Remark

High Byte Low Byte

Output Process Image

Byte Destination

Remark

High Byte Low Byte

Pulse width Modules

750-511, /000-002
The above 750-511 Pulse Width modules have a total of 6 bytes of user data in
both the Input and Output Process Image (4 bytes of channel data and 2 bytes
of control/status). The two channel values are supplied as 16 bits. Each
channel has its own control/status byte. The following table illustrates the
Input and Output Process Image, which has 4 words mapped into each image.
Word alignment is applied.

Input and Output Process Image

Offset

0 - C0/S0 Control/Status byte of Channel 1

1 D1 D0 Data Value of Channel 1

2 - C1/S1 Control/Status byte of Channel 2

3 D3 D2 Data Value of Channel 2

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Byte Destination

Remark

High Byte Low Byte

Fieldbus Coupler 750-341 • 55
Process image

Serial Interface Modules with alternative Data Format

750-650, /000-002, -004, -006, -007, -008, -009, -010, -011, -012, -013,

-017, -020, -021, -023
750-651, /000-002, -003, -004, -006
750-653, /000-001, -002, -005, -007, -008, -010

The above Serial Interface Modules have a total of 4 bytes of user data in both
the Input and Output Process Image (3 bytes of serial data and 1 byte of
control/status). The following table illustrates the Input and Output Process
Image, which has 2 words mapped into each image. Word alignment is
applied.

Input and Output Process Image

Offset

0 D0 C/S Data byte Handshake

1 D2 D1 Data bytes

Byte Destination

Remark

High Byte Low Byte

Serial Interface Modules with Standard Data Format

750-650/000-001, -014, -015, -016, -018, -019, -022
750-651/000-001, -007
750-653/000-006, -009, -011, -018

The above Serial Interface Modules have a total of 6 bytes of user data in both
the Input and Output Process Image (5 bytes of serial data and 1 byte of
control/status). The following table illustrates the Input and Output Process
Image, which has 3 words mapped into each image. Word alignment is
applied.

Input and Output Process Image

Offset

Byte Destination

Remark

High Byte Low Byte

0 D0 C/S Data byte Control/Status byte

1 D2 D1

2 D4 D3

Data bytes

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

56 • Fieldbus Coupler 750-341
Process image

750-654

The 750-654 Data Exchange module has a total of 4 bytes of user data in both
the Input and Output Process Image. The following table illustrates the Input
and Output Process Image, which has 2 words mapped into each image. Word
alignment is applied.

Input and Output Process Image

Offset

0 D1 D0

1 D3 D2

Bezeichnung der Bytes

Bemerkung

High Byte Low Byte

Datenbytes

SSI Transmitter Interface with alternative Data Format

750-630, /000-001, -002, -006, -008, -009, -011, -012, -013, /003-000
The above SSI Transmitter Interface modules have a total of 4 bytes of user

data in the Input Process Image, which has 2 words mapped into the image.
Word alignment is applied.

Input Process Image

Offset

0 D1 D0

1 D3 D2

Byte Destination

Remark

High Byte Low Byte

Data bytes

SSI Transmitter Interface with Standard Data Format

750-630/000-004, -005, -007
The above SSI Transmitter Interface modules have a total of 4 bytes of user

data in the Input Process Image, which has 2 words mapped into the image.
Word alignment is applied.

Input Process Image

Offset

0 D0 D1

1 D2 D3

Byte Destination

Remark

High Byte Low Byte

Data bytes

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 57
Process image

Incremental Encoder Interface Modules

750-631, /000-001, -004, -006, -008

The above 750-631 Incremental Encoder Interface modules have 5 bytes of
input data and 3 bytes of output data. The following tables illustrate the Input
and Output Process Image, which has 4 words mapped into each image. Word
alignment is applied.

Input Process Image

Offset

0 - S Status byte

1 D1 D0 Counter word

2 - - not used

3 D4 D3 Latch word

Offset

0 - C Control byt

1 D1 D0 Counter Setting word

2 - - not used

3 - - not used

Byte Destination

Remark

High Byte Low Byte

Output Process Image

Byte Destination

Remark

High Byte Low Byte

750-631/000-003, -005, -007

The above 750-631 Incremental Encoder Interface modules have 4 bytes of
input data. The following table illustrates the Input Process Image, which has
2 words mapped into the image. Word alignment is applied.

Input Process Image

Offset

0 D1 D0 Counter Value

1 D3 D2 Latch word

Byte Destination

Remark

High Byte Low Byte

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

58 • Fieldbus Coupler 750-341
Process image

750-634

The 750-634 Incremental Encoder Interface module has 5 bytes of input data
(6 bytes in cycle duration measurement mode) and 3 bytes of output data. The
following tables illustrate the Input and Output Process Image, which has 4
words mapped into each image. Word alignment is applied.

Input Process Image

Offset

0 - S Status byte

1 D1 D0 Counter word

2 - (D2)*) (Periodic time)

3 D4 D3 Latch word

*) If cycle duration measurement mode is enabled in the control byte, the cycle
duration is given as a 24-bit value that is stored in D2 together with D3/D4.

Offset

0 - C Control byte

1 D1 D0 Counter Setting word

2 - - not used

3 - - not used

Byte Destination

Remark

High Byte Low Byte

Output Process Image

Byte Destination

Remark

High Byte Low Byte

750-637

The 750-637 Incremental Encoder Interface Module has a total of 6 bytes of
user data in both the Input and Output Process Image (4 bytes of encoder data
and 2 bytes of control/status). The following table illustrates the Input and
Output Process Image, which has 4 words mapped into each image. Word
alignment is applied.

Input and Output Process Image

Offset

0 - C0/S0 Control/Status byte of Channel 1

1 D1 D0 Data Value of Channel 1

2 - C1/S1 Control/Status byte of Channel 2

3 D1 D0 Data Value of Channel 2

Byte Destination

Remark

High Byte Low Byte

750-635

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 59
Process image

The 750-635 Digital Pulse Interface module has a total of 4 bytes of user data
in both the Input and Output Process Image (3 bytes of module data and 2
bytes of control/status). The following table illustrates the Input and Output
Process Image, which has 2 words mapped into each image. Word alignment
is applied.

Input and Output Process Image

Offset

0 D0 C0/S0 Data byte Control/Status byte

1 D2 D1 Data bytes

Byte Destination

Remark

High Byte Low Byte

System Modules with Diagnostics

750-610, -611

The 750-610 and 750-611 Supply Modules provide 2 bits of diagnostics in the
Input Process Image for monitoring of the internal power supply.

Input Process Image

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

Diagnostic

bit S 2

Fuse

Diagnostic

bit S 1

Fuse

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

60 • Fieldbus Coupler 750-341
Data Exchange

3.1.5 Data Exchange

The ETHERNET TCP/IP fieldbus coupler can be configured for either
MODBUS/TCP or the Ethernet IP protocol.

MODBUS/TCP works according to the master/slave principle. The master is a
superimposed control unit, i.e. a PC or a PLC device. The ETHERNET
TCP/IP couplers of the WAGO-I/O-SYSTEM are slave devices.

The master makes a query for communication. Through adressing, this query
can be sent to a specific node. The nodes receive the query and return a
response to the master, depending on the kind of query.

A coupler is able to produce a defined number of simultaneous socket
connections to other network subscribers:

• 3 connections for HTTP (read HTML pages from the coupler),

• 5 connections via MODBUS/TCP (read or write input and output data from

the coupler),

• 128 Ethernet IP connections

The maximum number of simultaneous connections may not be exceeded. If
you wish to establish further connections, terminate an existing connection
first.

For data exchange, the ETHERNET TCP/IP fieldbus coupler uses two main
interfaces:

• interface to the fieldbus (master) and

• the interface to the I/O Modules.

Data exchange takes place between the fieldbus master and the I/O modules.
One uses as field bus of the MODBUS masters, this accesses over the
MODBUS functions implemented in the coupler data, ETHERNET IP however
used for the data access an object model. The addressing of the data is in each
case different thereby very.

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 61
Data Exchange

3.1.5.1 Memory areas

Programmable Fieldbus Controller

memory area

for input data

word 0

modules

word 255
word 256

reserved

word 511
word 512

modules

word 1275
word 1276

reserved

word 1531

input

input

1

1

I/O modules

fieldbus
master

memory area

for output data

word 0

output

modules

word 255
word 256

reserved

word 511
word 512

output

modules

word 1275
word 1276

reserved

word 1531

2

I

2

O

Fig. 3.1-6: Memory areas and data exchange for a fieldbus coupler g015056e

The coupler's process image contains the physical data of the I/O modules in
memory words 0 to 255 and 512 to 1275.

(1) The input module data can be read from the fieldbus side.

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

fieldbus side.

In addition, all output data of the ETHERNET TCP/IP coupler are mirror
imaged on a storage area with the address offset 0x0200 or 0x1000. This
allows to read output values back by adding 0x0200 or 0x1000 to the
MODBUS address.

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

62 • Fieldbus Coupler 750-341
Data Exchange

3.1.5.2 Addressing the I/O modules

The arrangement of the I/O modules in a node is optional.

When addressing, first of all the more complex modules (modules occupying 1
or more bytes) are taken into account in accordance with their physical order
behind the fieldbus coupler. As such, they occupy the addresses starting with
word 0.
Following this, the data of the other modules (modules occupying less than 1
byte) follow, grouped into bytes. In accordance with the physical byte-wise
order this data is used to fill up the bytes. As soon as a full byte is occupied by
the bit-oriented modules, the next byte is automatically started.

Note
For the number of input and output bits and/or bytes of the individual activated
bus modules, please refer to the pertaining descriptions of the bus modules.

Note
Once a node is modified, a new architecture of the process image can result. As
such, the address of the process data will alsochange. In the event of adding
modules, the process data of all previous modules has to be taken into account.

Data width ≥ 1 Word / channel Data width = 1 Bit / channel

Analog input modules Digital input modules
Analog output modules Digital output modules
Input modules for thermal elements Digital output modules with diagnosis (2 Bit / channel)
Input modules for resistance sensors Power supply modules with fuse holder / diagnosis
Pulse width output modules Solid State power relay
Interface module Relay output modules
Up/down counter
I/O modules for angle and path measurement

Table 3.1.1: I/O module data width

3.1.5.3 Data exchange between MODBUS master and I/O modules

The data exchange between the MODBUS master and the I/O modules is made
by the implemented MODBUS functions in the coupler with reading and
writing in bits or bytes.

The coupler handles four different types of process data:

• Input words

• Output words

• Input bits

• Output bits

The word for word access to the digital input and output modules is made in
accordance with the following table:

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 63
Data Exchange

Digital Inputs/Outputs

Process data word

Byte

16. 15. 14. 13. 12. 11. 10. 9. 8. 7. 6. 5. 4. 3. 2. 1.

Bit

Bit

Bit

Bit

Bit

Bit

15

14

13

12
High-Byte Low-Byte
D1 D0

11

Bit9 Bit8 Bit7 Bit 6 Bit 5 Bit 4 Bit 3 Bit2 Bit1 Bit

10

Table 3.1.2: Allocation of digital inputs/outputs to process data word acc. Intel format

The outputs can be read back by adding 0x0200 to the MODBUS address.

Note

For MODBUS mapping, all output data over 256 words resides in the
memory area 0x6000 to 0x62FC, and can be read back with an offset of
1000

(0x1000) added onto the MODBUS address.

hex

MODBUS master

0x0000

0x00FF

0x6000

PII

0x62FC

0x0000

(0x0200)

00x0FF

(0x02FF)

0x6000

(0x7000)

PIO

0x62FC

(0x72FC)

0

Inputs

Outputs

I/O modules

PII = Process Input

Image

PIO = Process Output

Image

Fieldbus Coupler

Fig. 3.1-7: Data exchange between the MODBUS master and I/O modules g015057e

Starting from address 0x1000 there are the register functions. The register
functions made available in the coupler, can be addressed by the MODBUS
master along with the implemented MODBUS function codes (read/write). To
this effect, the individual register address is entered in place of the address of
a module channel.

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

64 • Fieldbus Coupler 750-341
Data Exchange

3.1.5.4 Data Exchange between Ethernet IP Master and I/O Modules

Data exchange between the Ethernet IP master and the I/O modules is object
oriented. Each node in the network is represented as a collection of objects.
The “assembly” object defines the structure of objects for data transfer. With
the assembly object, data (e.g. I/O data) can be grouped into blocks (mapped)
and sent via a single communication link. As a result of this mapping
technique, fewer access operations to the network are required.
Input and output assemblies have different functions.
An input assembly reads data from the application over the network or
produces data on the network.
Where as, an output assembly writes data to the application or consumes data
from the network.

Various assembly instances are permanently pre-programmed in the fieldbus
coupler (static assembly).

After switching on the power supply, the assembly object maps data from the
process image. As soon as a connection is established, the master can address
the data with "class", "instance" and "attribute" and access or read and/or write
the data via I/O links.
The mapping of the data depends on the chosen assembly instance of the static
assembly.

Further information
The assembly instances for the static assembly are described in the section

7.3.2.6 “Assembly (04

hex

)".

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 65
Data Exchange

3.1.5.4.1 Overview of the MODBUS TCP addresses

3.1.5.4.1.1 Word Access

FC3

- Read Multiple Register

FC4
– Read Holding Register

FC16
– Write Multiple Register

MODBUS Addresses Method

decimal hexadecimal

0...

255

256...
511

512 ...

767

768 ...

1023

illegal Address 0x0400 –

4096...
8191

8192 ...

12287

12288...
24575

24576 ...

25340

28672 ...

29436

0...

255

256...
511

512...
767

768 ...

1023

illegal Address 0x0400 –

4096...
8191

illegal Address 0x2000 -

12288...
24575

24576 ...

25340

28672 ...

29436

0x0000 –

0x00FF

0x0100 –

0x01FF

0x0200 –

0x02FF

0x0300 –

0x03FF

0x0FFF

0x1000 –

0x1FFF

0x2000 -

0x2FFF

0x3000 -

0x5FFF
0x6000­0x62FC
0x7000­0x72FC

0x0000 –

0x00FF

0x0100 –

0x01FF

0x0200 –

0x02FF

0x0300 –

0x03FF

0x0FFF

0x1000 –

0x1FFF

0x2FFF

0x3000 -

0x5FFF
0x6000­0x62FC
0x7000­0x72FC

Description

phys. Inputs (1)

reserved

phys. Outputs (1)

reserved

Configuration register

Firmware register

reserved

phys. Inputs (2)

phys. Outputs (2)

phys. Outputs (1)

reserved

phys. Outputs (1)

reserved

Configuration register

Firmware register

reserved

phys. Outputs (2)

phys. Outputs (2)

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

66 • Fieldbus Coupler 750-341
Data Exchange

3.1.5.4.1.2 Bit Access

FC2

- Read Input Discret

FC1 = FC2 + 0x0200
– Read Coils

FC15-

- Force Multiple Coils

MODBUS Adresses Method

decimal hexadecimal

0...

511

512...

1023

Illegal Address 0x0400 –

4096...
8191

8192...

12287

12288...
13815

16384...
17911

0...

511

512...
1023

Illegal Address 0x0400 –

4096...
8191

8192...

12287

12288...
13815

16384...
17911

0x0000 –

0x01FF

0x0200 –

0x03FF

0x0FFF

0x1000 –

0x1FFF

0x2000 –

0x2FFF

0x3000 -

0x35F7

0x4000 -

0x45F7

0x0000 –

0x01FF

0x0200 –

0x03FF

0x0FFF

0x1000 –

0x1FFF

0x2000 –

0x2FFF

0x3000 -

0x35F7

0x4000 -

0x45F7

Description

phys. Inputs (1)

phys. Outputs (1)

reserved

reserved

phys. Inputs (2)

phys. Outputs (2)

phys. Outputs (1)

reserved

phys. Outputs (2)

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 67
Data Exchange

3.1.5.4.1.3 Example of Use:

Process input image

MODBUS Addresses

0x0000

0x0001
0x0200

0x0201

0x0002
0x2002

Process output image

MODBUS Addresses

0x0000 / 0x0200
0x0001 / 0x0201

0x0002 / 0x0202

Bit 2

DO

Bit 1

Bit 1

AO

Word1

Word1
Word2

DI

Bit 1

AI

Word1
Word2

Ethernet

ON

LINK

TxD/RxD

ERROR

I/O

USR

SYSTEM

-

I/O

-

750-842

WAGO

I/O Modules 750- 402 472 501 550 600

(Word)

Highbyte

Word1
Word2Word2

Word1
Word2

Lowbyte

Bit 4

(Word)

Word1
Word2

Highbyte

Lowbyte

Process input image

(Bit)

MODBUS Addresses

Process output image

MODBUS Addresses

0x0000 / 0x0200

0x0001 / 0x0201

0x0000

0x0001

0x0002

0x0003

0x0200

0x0201

(Bit)

Bit 1

Bit 2

Bit 3

Bit 4

Bit 1

Bit 2

Bit 1

Bit 2

DI : Digital Input Module
AI : Analog Input Module

DO: Digital Output Module
AO: Analog Output Module

Fig. 3.1-8: Example: Addressing of a Fieldbus node g015058e

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

68 • Fieldbus Coupler 750-341
Starting up ETHERNET TCP/IP fieldbus nodes

3.1.6 Starting up ETHERNET TCP/IP fieldbus nodes

This chapter shows the step-by-step procedure for starting up a
WAGO ETHERNET TCP/IP fieldbus node. The following also contains a
description of how to read out the coupler-internal HTML pages.

Note

When starting up the 750-341 coupler, there are a number of important
factors to consider, since the start-up of this coupler differs significantly in
certain respects from the 750-342 ETHERNET coupler.

Attention
This description is given as an example and is limited to the execution of a
local startup of an individual ETHERNET fieldbus node with a computer
running under windows which is not connected to a network.
Direct Internet connection should only be performed by an authorized
network administrator and is, therefore, not described in this manual.

The procedure contains the following steps:

1. Noting the MAC-ID and establishing the fieldbus node

2. Connecting the PC and fieldbus node

3. Determining the IP address

4. Allocation of the IP address to the fieldbus node

5. Function of the fieldbus tests

6. Deactivating the BootP Protocol

7. Reading out information as HTML pages

3.1.6.1 Note the MAC-ID and establish the fieldbus node

Before establishing your fieldbus node, please note the hardware address
(MAC-ID) of your ETHERNET fieldbus coupler.
This is located on the rear of the fieldbus coupler and on the self-adhesive
tear-off label on the side of the fieldbus coupler.

MAC-ID of the fieldbus coupler will be in this format:

----- ----- ----- ----- ----- -----.

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 69
Starting up ETHERNET TCP/IP fieldbus nodes

3.1.6.2 Connecting PC and fieldbus node

Connect the assembled ETHERNET TCP/IP fieldbus node via a hub or
directly to the PC using a 10Base-T cable. The transmission rate of the coupler
is dependant on the baud rate of the PC network interface card..

Attention
For a direct connection, a crossover cable is required instead of a parallel cable.

Now start the BootP server on the PC and apply power to the coupler
(DC 24 V power pack). Once the operating voltage has been switched on, the
fieldbus coupler initialization starts. The fieldbus coupler determines the
configuration of the I/O modules and creates the process image.

During the startup the 'I/O' LED (red) flashes at a high frequency.

When the 'I/O' LED turns green, the fieldbus coupler is ready for operation.
If an error has occurred during startup, a fault code is flashed on the 'I/O' LED
(red).

If the 'I/O' LED flashes 6 times (indicating error code 6) and then 4 times
(indicating error argument 4), an IP address has not been assigned yet.

3.1.6.3 Determining IP addresses

If your PC is already connected to an ETHERNET network, it is very easy to
determine the IP address of your PC. To do this, proceed as follows:

1. Go to the Start menu on your screen, menu item Settings and click on
Control Panel.

2. Double click the icon Network.
The network dialog window will open.

3. - Under Windows NT

: Select the register: Protocols and mark

the entry TCP/IP protocol.

- Under Windows 9x

: Select the register: Configuration and mark

the entry TCP/IP network card.

Attention
If the entry is missing, please install the respective TCP/IP component and
restart your PC. The Windows-NT installation CD, or the installations CD for
Windows 9x is required for the installation.

4. Subsequently, click the button "Properties...".

The IP address and the subnet mask are found in the ‘IP address’ tab.If
applicable, the gateway address of your PC is found in the ‘Gateway’ tab.

5. Please write down the values:

IP address PC: ----- . ----- . ----- . -----

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

70 • Fieldbus Coupler 750-341
Starting up ETHERNET TCP/IP fieldbus nodes

Subnet mask: ----- . ----- . ----- . -----

Gateway: ----- . ----- . ----- . -----

6. Now select a desired IP address for your fieldbus node.

Attention
When selecting your IP address, ensure that it is in the same local network in
which your PC is located.

7. Please note the IP address you have chosen:
IP address fieldbus node: ----- . ----- . ----- . -----

3.1.6.4 Allocating the IP address to the fieldbus node

The following describes how to allocate the IP address for the fieldbus node
using the WAGO BootP server by way of an example. You can download a
free copy from WAGO over the Internet under:
http://www.wago.com/wagoweb/usa/eng/support/downloads/index.htm.

Note

The IP address can be allocated under other operating systems (i.e. under
Linux) as well as with any other BootP servers.

Attention
The IP address can be allocated in a direct connection via a crossover cable or
via a parallel cable and a hub. An allocation over a switch is not possible.

BootP table

Note

Prerequisite for the following steps is the correct installation of the WAGO
BootP server.

1. Go to the Start menu, menu item Programs / WAGO Software / WAGO
BootP Server and click on WAGO BootP Server configuration.

An editable table will appear: "bootptab.txt".
This table displays the data basis for the BootP server. Directly following
the list of all notations used in the BootP table there are two examples for
the allocation of an IP address.

"Example of entry with no gateway" and "Example of entry with
gateway".

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 71
Starting up ETHERNET TCP/IP fieldbus nodes

Fig. 3.1-9: BootP table p012908e

The examples mentioned above contain the following information:

Declaration Meaning

node1,
node2

ht=1 Specify the hardware type of the network here.

ha=0030DE000100
ha=0030DE000200

ip= 10.1.254.100
ip= 10.1.254.200

T3=0A.01.FE.01
gw=10.1.254.1

sm=255.255.0.0 In addition enter the Subnet-mask of the subnet (decimal), where the

Any name can be given for the node here.

The hardware type for ETHERNET is 1.
(The numbers are described in RFC1700)

Specify the hardware address or the MAC-ID of the ETHERNET
fieldbus coupler (hexadecimal).

Enter the IP address of the ETHERNET fieldbus coupler (decimal)
here.

Specify the gateway IP address here.
Write the address for T3 in hexadecimal form and for gw in decimal
form.

ETHERNET fieldbus coupler belongs to.

No gateway is required for the local network described in this example.
Therefore, the first example: "Example of entry with no gateway" can be
used.

2. Move the mouse pointer to the text line:
"node1:ht=1:ha=0030DE000100:ip=10.1.254.100" and mark the 12
character hardware address which is entered after ha=...
Enter the MAC-ID of your own network coupler.

3. If you want to give your fieldbus node a name, delete the name "node1" and
enter any name in its place.

4. To assign the coupler a desired IP address, mark the IP address specified in
the example which is entered after ip=...
Replace it with the IP address you have selected.

5. Because the second example is not necessary at present, insert a “#” in front
of the text line of the second example: "# node2:hat=1:ha=003 0DE 0002
00:ip=10.1.254.200:T3=0A.01.FE.01", so that this line will be ignored.

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

72 • Fieldbus Coupler 750-341
Starting up ETHERNET TCP/IP fieldbus nodes

Note

To address more fieldbus nodes, enter a corresponding text line showing the
corresponding entries for each node.

6. Save the altered settings in this text file "bootptab.txt". To do this go to the

File menu, menu item Save, and close the editor.

BootP Server

7. Now open the dialog window for the WAGO BootP server by going to the

Start menu on your screen surface, menu item Program / WAGO Software
/ WAGO BootP Server and click on WAGO BootP Server.

8. Click on the "Start" button in the opened dialog window.

This will activate the inquiry/response mechanism of the BootP protocol.
A series of messages will be displayed in the BootP server. The error
messages indicate that some services (i.e. port 67, port 68) in the operating
system have not been defined.

Fig. 3.1-10: Dialog window of the WAGO BootP server with messages P012909d

9. Now it is important to restart the coupler by resetting the hardware .
This ensures that the new IP address will be accepted by the coupler.
To do this, cycle power to the fieldbus coupler for approx. 2 seconds.

Following this, the IP address in the coupler is permanently stored and
maintained even once the coupler is removed or following a longer voltage
failure.

10. Subsequently, click on the "Stop" button and then on the "Exit" button, to
close the BootP Server again.

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 73
Starting up ETHERNET TCP/IP fieldbus nodes

3.1.6.5 Testing the function of the fieldbus node

1. To test the communication with the coupler and the correct assignment of

the IP address call up the DOS prompt under Start menu / Program / MS-
DOS Prompt.

2. Enter the command: "ping" with the IP address you have assigned in the

following form:
ping [space] XXXX . XXXX . XXXX . XXXX (=IP address).
Example: ping 10.1.254.202

Fig. 3.1-11: Example for the function test of a fieldbus node P012910e

3. When the Return key has been pressed, your PC will receive a response from
the coupler, which will then be displayed in the DOS prompt.
If the error message: "Timeout" appears instead, please compare your entries
again to the allocated IP address.

4. When the test has been performed successfully, you can close the DOS
prompt.
The network node has now been prepared for communication.

3.1.6.6 Deactivating the BootP Protocol

By default, the BootP protocol is activated in the coupler.

When the BootP protocol is activated, the coupler expects the permanent
presence of a BootP server. If, however, there is no BootP server available

at a power-on reset, the network remains inactive.
To operate the coupler with the IP configuration stored in the EEPROM, the

BootP protocol must be deactivated.

Note

If the BootP protocol is disabled after the IP address assignment, the stored
IP address is retained even after power is removed from your coupler.

1. Disabling of the BootP protocol is done via the built-in web pages stored in
the coupler. Open a web browser on your PC (e.g., Microsoft Internet
Explorer).

2. Now enter the coupler’s I/P address in the address box of the browser and
press the Enter key.
A dialog window will open and ask for a password. This serves as access
protection, and includes the three different user groups: admin, guest and
user.

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

74 • Fieldbus Coupler 750-341
Starting up ETHERNET TCP/IP fieldbus nodes

3. To logon as the administrator, enter the user name admin and the password
wago.

One of the coupler’s built-in web pages is displayed. The opening page
displays information about your fieldbus coupler. You can get further
information by clicking the hyperlinks on the left navigation bar.

Note

If the coupler does not display the opening HTML page, make sure your web
browser is setup to bypass the proxy server for local addresses.

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 75
Starting up ETHERNET TCP/IP fieldbus nodes

4. Click the "Port" hyperlink on the left navigation bar.

5. A list of all protocols supported by the coupler is displayed. The BootP

protocol is activated by default. To disable the protocol, click on the check
box after BootP to remove the check mark.

6. You can disable other protocols you do not need in a similar way, or enable

protocols you wish to use, e. g. Ethernet IP, Modbus TCP or Modbus UDP.
It is possible to enable several protocols at the same time, since each
protocol uses a different port.

7. To store the protocol selection, click the SUBMIT button and then perform

a hardware reset. To do this, either switch off the power supply of the
coupler for ca. 2 seconds or press down the operating mode switch.

8. The protocol settings are now stored EEPROM and the coupler is ready to

operate.

If you activated e.g. the MODBUS TCP protocol, you now can select and
implement various MODBUS functions with a MODBUS Mastertool, as for
example the inquiry of the clamp configuration via register 0x2030.

3.1.6.7 Information on the web-based management system

In addition to the web pages already described in section 3, the following
HTML pages are stored in your coupler and provide information and
configuration options. After opening the default page of your coupler, you can
access these pages via the hyperlinks in the left navigation bar of the browser
window.

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

76 • Fieldbus Coupler 750-341
Starting up ETHERNET TCP/IP fieldbus nodes

TCP/IP Configuration

Under the TCP/IP link, you can view and change settings for the TCP/IP
protocol, which is responsible for network transmission.

SNMP Configuration

Under the Snmp link, you can view and change settings for the Simple
Network Management Protocol, which is responsible for the transport of
control data.

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 77
Starting up ETHERNET TCP/IP fieldbus nodes

Watchdog Configuration

Under the Watchdog link, you can view and change settings for the
MODBUS Watchdog.

Clock Configuration

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

78 • Fieldbus Coupler 750-341
Starting up ETHERNET TCP/IP fieldbus nodes

Under the Clock link, you can view and change settings for the coupler’s
internal real time clock.

I/O Configuration

Under the I/O Config link, you can view the configuration of your fieldbus
node.

Web Security

Under the Web security link, you can setup read/write access rights by using
passwords for different user groups in order to protect against configuration
changes.

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 79
Starting up ETHERNET TCP/IP fieldbus nodes

The following groups are provided for this:
User: admin; Pass word: wago
User: guest; Pass word: guest
User: user; Pass word: user

Samples

Under the Samples link, a sample HTML page is provided, which you can use
as a starting point to create your own web page. You can then store this or any
other web page you have created into the file system of the coupler using FTP
download.

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

80 • Fieldbus Coupler 750-341
LED Display

3.1.7 LED Display

The coupler possesses several LED’s for displaying the coupler operating
status and the complete node status.

ETHERNET

ETHERNET

LINK

LINK

MS

MS

NS

NS

TxD/RxD

TxD/RxD

I/O

I/O

USR

Fig. 3.1-12: Display elements 750-341 g034102x

The LEDs can be divided into three groups.

01

01

A

A

A

A

B

B

B

B

24V 0V

24V 0V

++

++

02

02

ETHERNET

C

C

C

C

C

C

A

A

D

D

LINK

MS

NS

TxD/RxD

I/O

01

A

A

B

B

24V 0V

++

02

C

C

A

D

B

The first group of LEDs display the status of the Ethernet fieldbus. It contains
both solid and two-color LEDs. They are labelled as: ‘LINK‘ (green), ‘MS‘
(red/green), ‘NS‘ (red/green), and ‘TxD/RxD‘ (green).
The second group of LEDsis a three-color LED (red/green/orange). This LED
is labelled ‘I/O’, and displays the status of the internal bus.

The third group uses solid colored green LEDs. They are located on the right­hand side of the coupler power supply. These display the status of the supply
voltage.

3.1.7.1 Blink code

When the fieldbus coupler is in a faulted, the ‘I/O’ LED is used to signal the
fault type through a series of flashes (i.e., blink code). The blink code is
cyclically displayed using 3 different blink sequences.

• The first blink sequence (approx. 10 flashes/second) indicates the start of a
new sequence.

• After a pause, a second blink sequence starts (approx. 1 flash/second).
Count the number of flashes to determine the fault code (e.g., 3 flashes
equals Fault Code 3).

• The third blink sequence (approx. 1 flash/second) starts following a
another pause. Count the number of flashes to determine the fault
argument.

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 81
LED Display

3.1.7.2 Fieldbus status

The health of the ETHERNET Fieldbus is signalled through the top LED
group (‘LINK‘, ‘MS‘, ‘NS‘ and ‘TxD/RxD‘). The two-colored LEDs ‘MS’
(module status) and ‘NS’ (network status) are solely used by the Ethernet/IP
protocol. These two LEDs conform to the Ethernet/IP specifications.

LED Meaning Trouble shooting

LINK

green Link to a physical network exists
OFF No link to a physical network Check the fieldbus connection.

MS

red / green
flashing
red The system indicates a not remediable error
red flashing The system indicates a remediable error
green
flashing
green Normal operation
OFF No system supply voltage Check the supply voltage (24V and 0V)

NS

red / green
flashing
red The system indicates a double IP-address in the

red flashing At least one connection announced a Timeout,

green
flashing
green At least one connection is developed (also

OFF Dem System ist keine IP-Adresse zugeordnet

TxD/RxD

green Data exchange via ETHERNET taking place
OFF No data exchange via ETHERNET

Self test

The system is not yet configures

Self test

network

where the coupler functions as target.
No connection

connection to the Message rout applies)

oder es liegt keine Betriebsspannung an

3.1.7.3 Node status

The ‘I/O‘-LED displays the communication status of the internal bus.
Additionally, this LED is used to display fault codes (blink codes) in the event
of a system error.

LED Meaning Trouble shooting

I/O

Green Fieldbus coupler operating perfectly
Red a) During startup of fieldbus coupler:

Internal bus being initialized,
Startup displayed by LED flashing fast for approx.
1-2 seconds

Red b) After startup of fieldbus coupler:

Errors, which occur, are indicated by three conse­ cutive flashing sequences. There is a short pause
between each sequential flash.

Evaluate the fault message (fault code and
fault argument).

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

82 • Fieldbus Coupler 750-341
LED Display

The coupler starts up after switching on the supply voltage. The "I/O" LED
blinks. The "I/O" LED has a steady light following a fault free run-up.
In the case of a fault the "I/O" LED continues blinking. The fault is cyclically
displayed by the blink code.

Switching on

the power supply

Coupler/Controller starts up

“I/O”-LED is blinking

Test o.k.?

Yes

“I/O”-LED is shining

No

“I/O” LED
1st flash sequence

(Introduction of the
error indication)

1st break

“I/O” LED
2nd flash sequence

Error code

(Number of flash cycles)

2nd break

“I/O” LED
3rd flash sequence

Error argument

(Number of flash cycles)

ready for operation

Fig. 3.1-4: Signalling of the LED for indication of the node status g012911e

After clearing a fault, restart the coupler by cycling the power.

Fault message via blink code from the I/O-LED

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 83
LED Display

3.1.7.4 Fault message via blink code from the ‘I/O‘-LED

1 st flash sequence: Start of the Fault message
2 nd flash sequence: Fault code
3 rd flash sequence: Fault argument

Fault code 1: "Hardware and Configuration fault"

Fault argument Fault description Trouble shooting

1 Overflow of the internal buffer

memory for the inline code

2 I/O module(s) with unsupported

data type

Turn off the power supply of the
node, reduce number of I/O
modules and turn the power supply
on again. If the error still exists,
exchange the bus coupler.

Detect faulty I/O module as
follows: turn off the power supply.
Place the end module in the middle
of the fieldbus node. Turn the
power supply on again.
– If the LED is still blinking, turn
off the power supply and place the
end module in the middle of the
first half of the node (towards the
coupler).
– If the LED doesn’t blink, turn off
the power supply and place the end
module in the middle of the second
half of the node (away from the
coupler).
Turn the power supply on again.
Repeat this procedure until the
faulty I/O module is detected.
Replace the faulty I/O module.
Ask about a firmware update for
the fieldbus coupler.

3 Checksum error of the parameter

data

4 Acknowledge Fault when writing

data in the EEPROM

5 Fault when reading out data from

the EEPROM

6 Changed I/O module

configuration determined after
AUTORESET

7 Firmware does not run on

existing hardware

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

Turn off the power supply of the
node, exchange fieldbus coupler
and turn the power supply on
again.

Turn off the power supply of the
node, exchange fieldbus coupler
and turn the power supply on
again.

Turn off the power supply of the
node, exchange fieldbus coupler
and turn the power supply on
again.

Restart the fieldbus coupler by
turning the power supply off and
on again.

Turn off the power supply of the
node, exchange fieldbus coupler
and turn the power supply on
again.

84 • Fieldbus Coupler 750-341
LED Display

8 Timeout when writing data in the

EEPROM

Turn off the power supply of the
node, exchange fieldbus coupler
and turn the power supply on
again.

9 Bus Coupler initialisation fault Turn off the power supply of the

node, exchange fieldbus coupler
and turn the power supply on
again.

10 RTC-Powerfail Adjust the clock and keep upright

the supply voltage of the bus
coupler for at least 15 minutes for
loading of the Goldcaps.

11 Fault when reading out the time

from the RTC

Adjust the clock and keep upright
the supply voltage of the bus
coupler for at least 15 minutes for
loading of the Goldcaps.

12 Fault when writing the time in

the RTC

Adjust the clock and keep upright
the supply voltage of the bus
coupler for at least 15 minutes for
loading of the Goldcaps.

13 Error Clock-Interrupt Adjust the clock and keep upright

the supply voltage of the bus
coupler for at least 15 minutes for
loading of the Goldcaps.

14 Maximum number of Gateway or

Mailbox I/O modules exceeded

Turn off the power supply of the
node, reduce number of Gateway
or Mailbox I/O modules and turn
the power supply on again.

Fault code 2: -not used-

Fault argument Fault description Trouble shooting

- not used -

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 85
LED Display

Fault code 3: "Internal bus protocol fault"

Fault argument Fault description Trouble shooting

- Internal bus communication
malfunction; faulty device can’t
be detected

If the fieldbus node comprises
internal system supply modules
(750-613), make sure first that the
power supply of these modules is
functioning. This is indicated by
the status LEDs. If all I/O modules
are connected correctly or if the
fieldbus node doesn’t comprise
750-613 modules you can detect
the faulty I/O module as follows:
turn off the power supply of the
node. Place the end module in the
middle of the fieldbus node. Turn
the power supply on again.
– If the LED is still blinking, turn
off the power supply and place the
end module in the middle of the
first half of the node (towards the
coupler).
– If the LED doesn’t blink, turn off
the power supply and place the end
module in the middle of the second
half of the node (away from the
coupler).
Turn the power supply on again.
Repeat this procedure until the
faulty I/O module is detected.
Replace the faulty I/O module. If
there is only one I/O module left
but the LED is still blinking, then
this I/O module or the coupler is
defective. Replace defective
component.

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

86 • Fieldbus Coupler 750-341
LED Display

Fault code 4: "Internal bus physical fault"

Fault argument Fault description Trouble shooting

- Error in internal bus data
communication or interruption of
the internal bus at the coupler

Turn off the power supply of the
node. Place an I/O module with
process data behind the coupler
and note the error argument after
the power supply is turned on. If
no error argument is given by the
I/O LED, replace the coupler.
Otherwise detect faulty I/O
module as follows: turn off the
power supply. Place the end
module in the middle of the
fieldbus node. Turn the power
supply on again.
– If the LED is still blinking, turn
off the power supply and place the
end module in the middle of the
first half of the node (towards the
coupler).
– If the LED doesn’t blink, turn off
the power supply and place the end
module in the middle of the second
half of the node (away from the
coupler).
Turn the power supply on again.
Repeat this procedure until the
faulty I/O module is detected.
Replace the faulty I/O module.
If there is only one I/O module left
but the LED is still blinking, then
this I/O module or the coupler is
defective. Replace defective
component.

n* Interruption of the internal bus

after the n

th

process data module.

Turn off the power supply of the
node, exchange the (n+1)th process
data module and turn the power
supply on again.

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 87
LED Display

Fault code 5: "Internal bus initialization fault"

Fault argument Fault description Trouble shooting

n* Error in register communication

during internal bus initialization

Fault code 6: "Fieldbus specific errors"

Fault argument Fault description Trouble shooting

1 Invalid MACID Turn off the power supply of the

2 Ethernet Hardware initialization

error

3 TCP/IP initialization error Restart the fieldbus coupler by

4 Network configuration error (no

IP Address)

5 Application protocol

initialization error

Turn off the power supply of the
node and replace n
module and turn the power supply
on again.

node, exchange fieldbus coupler
and turn the power supply on
again.

Restart the fieldbus coupler by
turning the power supply off and
on again. If the error still exists,
exchange the bus coupler.

turning the power supply off and
on again. If the error still exists,
exchange the bus coupler.

Check the settings of BootP server.

Restart the fieldbus coupler by
turning the power supply off and
on again.

th

process data

6 Process image is too large Reduce number of I/O modules.

7 Double IP address in network Use another IP adresse, which is

not yet present in network.

8 Error when building the process

image

* The number of blink pulses (n) indicates the position of the I/O module. I/O modules
without data are not counted (e.g. supply module without diagnosis)

Restart the fieldbus coupler by
turning the power supply off and
on again.

Example for a fault message; Fault: The 13th I/O module has been removed

1. The "I/O" LED starts the fault display with the first blink sequence (approx. 10
flashes/second).

2. The second blink sequence (1 flash/second) follows the first pause. The "I/O" LED
blinks four times and thus signals the fault code 4 (internal bus data fault).

3. The third blink sequence follows the second pause. The "I/O " LED blinks twelve
times. The fault argument 12 means that the internal bus is interrupted after the 12th
I/O module.

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

88 • Fieldbus Coupler 750-341
LED Display

3.1.7.5 Supply voltage status

The two green LED’s in the coupler supply section, display the status of the
supply voltage. The left LED (A) indicates the status of the 24 V supply for
the coupler. The other LED (‘B‘ or ‘C‘)displays the status of the field side
supply (i.e., the power jumper contacts).

LED Meaning Trouble shooting

A

Green Operating voltage for the system exists.

OFF No operating voltage for the system. Check the supply voltage (24V

B or C

and 0V).

Green Operating voltage for the power jumper

contacts exists.

OFF No operating voltage for the the power

jumper contacts.

Check the supply voltage (24V
and 0V).

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

Fieldbus Coupler 750-341 • 89 Fault behavior

3.1.8 Fault behavior

3.1.8.1 Fieldbus failure

A field bus failure is given i. e. when the master cuts-out or the bus cable is
interrupted. A fault in the master can also lead to a fieldbus failure.

A field bus failure is indicated when the red "ERROR"-LED is illuminated.

If the watchdog is activated, the fieldbus coupler firmware evaluates the
watchdog-register in the case of fault free communication, and the coupler
answers all following MODBUS TCP/IP requests with the exception code
0x0004 (Slave Device Failure).

More information
For detailed information on the Watchdog register see Chaper "MODBUS
Functions"; "Watchdog (Fieldbus failure)".

3.1.8.2 Internal bus fault

An internal bus fault is created, for example, if an I/O module is removed. If
this fault occurs during operation the output modules behave in the same
manner as an I/O module stop. The "I/O" LED blinks red.
The coupler generates a fault message (fault code and fault argument).
After clearing the internal bus fault, restart the coupler by cycling the power.
The coupler starts up. The transfer of the process data is then resumed and the
node outputs are correspondingly set.

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

90 • Fieldbus Coupler 750-341
Technical Data

3.1.9 Technical Data

System data

No. of nodes limited by ETHERNET specification
Transmission medium
Buscoupler connection RJ45
Max. length of fieldbus segment 100 m between hub station and 750-341;

Baud rate 10/100 Mbit/s
Protocols MODBUS/TCP (UDP), ETHERNET/IP, HTTP,

Technical Data

No. of I/O modules 64
digital signals

analog signals
Configuration possibility via PC

Twisted Pair S-UTP 100 Ω cat. 5

max. length of network limited by ETHERNET
specification

BootP, DHCP, DNS, SNTP, FTP, SNMP, SMTP

max. 2040 (inputs and outputs)
max. 1020 (inputs and outputs)

Max. no. of socket connections 3 HTTP, 5 MODBUS/TCP, 128 for Ethernet/IP
Voltage supply DC 24 V (-15 % / + 20 %)

Input current

500 mA at 24 V

max

Efficiency of the power supply 87 %
Internal current consumption 300 mA at 5 V
Total current for I/O modules 1700 mA at 5 V
Isolation 500 V system/supply
Voltage via power jumper contacts DC 24 V (-15 % / + 20 %)
Current via power jumper contacts

DC 10 A

max

Dimensions (mm) W x H x L 51 x 65* x 100 (*from upper edge of DIN 35 rail)
Weight ca. 195 g

Accessories

Miniature WSB quick marking system

Standards and Regulations (cf. Chapter 2.2)

EMC Immunity to interference

EMC Emission of interference

acc. to EN 50082-2 (96), EN 61000-6-2 (99)

acc. to EN 50082-2 (94)

Approvals (cf. Chapter 2.2)

(UL508) E175199

CULUS

Conformity marking CE

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

I/O Modules • 91 General

4 I/O Modules

4.1 General

All listed bus modules, in the review below, are available for modular
applications with the WAGO-I/O-SYSTEM 750.

For detailed information on the I/O modules and the module variations, please
refer to the manuals for the I/O modules.
You will find these manuals on CD ROM „ELECTRONICC Tools and Docs“
(Item-no.: 0888-0412-0001-0101) or on the web pages:

www.wago.com / Support / Tech. Documentation /

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

More Information

Current information on the modular WAGO-I/O-SYSTEM is
available in the Internet under:

www.wago.com

4.2 Digital Input Modules

DI DC 5 V

750-414 4 Channel, DC 5 V, 0.2 ms, 2- to 3-conductor connection,

high-side switching

DI DC 24 V

750-400 2 Channel, DC 24 V, 3.0 ms, 2- to 4-conductor connection;

high-side switching

750-401 2 Channel, DC 24 V, 0.2 ms, 2- to 4-conductor connection;

high-side switching

750-410 2 Channel, DC 24 V, 3.0 ms, 2- to 4-conductor connection;

high-side switching

750-411 2 Channel, DC 24 V, 0.2 ms, 2- to 4-conductor connection;

high-side switching

750-418 2 Channel, DC 24 V, 3.0 ms, 2- to 3-conductor connection;

high-side switching; diagnostic

750-419 2 Channel, DC 24 V, 3.0 ms, 2- to 3-conductor connection;

high-side switching; diagnostic

750-402 4 Channel, DC 24 V, 3.0 ms, 2- to 3-conductor connection;

high-side switching

750-432 4 Channel, DC 24 V, 3.0 ms, 2-conductor connection;

high-side switching

750-403 4 Channel, DC 24 V, 0.2 ms, 2- to 3-conductor connection;

high-side switching

750-433 4 Channel, DC 24 V, 0.2 ms, 2-conductor connection;

high-side switching

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

92 • Digital Input Modules
Technical Data

750-422 4 Channel, DC 24 V, 2- to 3-conductor connection;

750-408 4 Channel, DC 24 V, 3.0 ms, 2- to 3-conductor connection;

750-409 4 Channel, DC 24 V, 0.2 ms, 2- to 3-conductor connection;

750-430 8 Channel, DC 24 V, 3.0 ms, 1-conductor connection;

750-431 8 Channel, DC 24 V, 0.2 ms, 1-conductor connection;

DI AC/DC 24 V

750-415 4 Channel, AC/DC 24 V, 2-conductor connection

750-423 4 Channel, AC/DC 24 V, 2- to 3-conductor connection;

DI AC/DC 42 V

750-428 4 Channel, AC/DC 42 V, 2-conductor connection

high-side switching; 10 ms pulse extension

low-side switching

low-side switching

high-side switching

high-side switching

with power jumper contacts

DI DC 48 V

750-412 2 Channel, DC 48 V, 3.0ms, 2- to 4-conductor connection;

high-side switching

DI DC 110 V

750-427 2 Channel, DC 110 V, Configurable high-side or low-side switching

DI AC 120 V

750-406 2 Channel, AC 120 V, 2- to 4-conductor connection;

high-side switching

DI AC 230 V

750-405 2 Channel, AC 230 V, 2- to 4-conductor connection;

high-side switching

NAMUR

750-425 2 Channel, NAMUR, Proximity switch acc. to DIN EN 50227

750-435 1 Channel, NAMUR EEx i, Proximity switch acc. to DIN EN 50227

750-438 2 Channel, NAMUR EEx i, Proximity switch acc. to DIN EN 50227

Intruder Detection

750-424 2 Channel, DC 24 V, Intruder Detection

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

I/O Modules • 93 Digital Output Modules

4.3 Digital Output Modules

DO DC 5 V

750-519 4 Channel, DC 5 V, 20mA, short-circuit-protected; high-side switching

DO DC 24 V

750-501 2 Channel, DC 24 V, 0.5 A, short-circuit-protected; high-side

switching

750-502 2 Channel, DC 24 V, 2.0 A, short-circuit-protected; high-side

switching

750-506 2 Channel, DC 24 V, 0.5 A, short-circuit-protected;

high-side switching; with diagnostics

750-507 2 Channel, DC 24 V, 2.0 A, short-circuit-protected;

high-side switching; with diagnostics

750-535 2 Channel, DC 24 V, EEx i, short-circuit-protected;

PNP-positive switching

750-504 4 Channel, DC 24 V, 0.5 A, short-circuit-protected; high-side

switching

750-531 4 Channel, DC 24 V, 0.5 A, short-circuit-protected; high-side

switching

750-516 4 Channel, DC 24 V, 0.5 A, short-circuit-protected; low-side switching

750-530 8 Channel, DC 24 V, 0.5 A, short-circuit-protected; high-side

switching

DO AC/DC 230 V

750-509 2 Channel Solid State Relay, AC/DC 230 V, 300 mA

750-522 2 Channel Solid State Relay, AC/DC 230 V, 500 mA, 3 A (< 30 s)

DO Relay

750-514 2 Channel, AC 125 V , AC 0.5 A , DC 30 V, DC 1 A,

isolated outputs, 2 changeover contacts

750-517 2 Channel, AC 230 V, 1 A, isolated outputs, 2 changeover contacts

750-512 2 Channel, AC 230 V, DC 30 V, AC/DC 2 A, non-floating, 2 make

contacts

750-513 2 Channel, AC 230 V, DC 30 V, AC/DC 2 A, isolated outputs, 2 make

contacts

750-523 1 Channel, AC 230 V, AC 16 A, isolated output, 1 make contact,

bistable, manual operation

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

94 • Analog Intput Modules
Technical Data

4.4 Analog Intput Modules

AI 0 - 20 mA

750-452 2 Channel, 0 - 20 mA, Differential Inputs

750-453 4 Channel, 0 - 20 mA, single-ended (S.E.)

750-465 2 Channel, 0 - 20 mA, single-ended (S.E.)

750-472 2-channel, 0 - 20 mA, 16 Bit, single-ended (S.E.)

750-480 2-channel, 0 - 20 mA ,Differential Inputs

AI 4 - 20 mA

750-454 2 Channel, 4 - 20 mA,Differential Inputs

750-455 4 Channel, 4 - 20 mA, single ended (S.E.)

750-474 2 Channel, 4 - 20 mA, 16 Bit, single-ended (S.E.)

750-466 2 Channel, 4 - 20 mA, single ended (S.E.)

750-485 2 Channel, 4 - 20 mA, EEx i, single ended (S.E.)

750-492 2 Channel, 4 - 20 mA, Isolated Differential Inputs

AI 0 - 1 A

750-475 2-channel, 0 - 1 A AC/DC ,Differential Inputs

AI 0 - 10 V

750-459 4 Channel, DC 0 - 10 V, single-ended (S.E.)

750-467 2 Channel, DC 0 - 10 V, single-ended (S.E.)

750-468 4 Channel, DC 0 - 10 V, single-ended (S.E.)

750-477 2 Channel, AC/DC 0 - 10 V,Differential Inputs

750-478 2 Channel, DC 0 - 10 V, single-ended (S.E.)

AI DC ± 10 V

750-456 2 Channel, DC ± 10 V,Differential Inputs

750-457 4 Channel, DC ± 10 V, single-ended (S.E.)

750-479 2 Channel, DC ± 10 V,Differential Measurement Input

750-476 2 Channel, DC ± 10 V, single-ended (S.E.)

AI DC 0 - 30 V

750-483 2 Channel, DC 0 -30 V,Differential Measurement Input

AI ...

750-461 2 Channel, Resistance Sensors, PT100 / RTD

750-460 4 Channel, Resistance Sensors, PT100 / RTD

750-469 2 Channel, thermocouples with diagnostics

Sensor types: J, K, B, E, N, R, S, T, U, L

750-491 1 Channel for Resistor Bridges (Strain Gauge)

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP

I/O Modules • 95 Analog Output Modules

4.5 Analog Output Modules

AO 0 - 20 mA

750-552 2 Channel, 0 - 20 mA

750-585 2 Channel, 0 - 20 mA, EEx i

AO 4 - 20 mA

750-554 2-channel, 4 - 20 mA

AO DC 0 - 10 V

750-550 2 Channel, DC 0 - 10 V

750-559 4 Channel, DC 0 - 10 V

AO DC ± 10 V

750-556 2 Channel, DC ± 10 V

750-557 4 Channel, DC ± 10 V

4.6 Special Modules

Counter Modules

750-404 Up / Down Counter, DC 24 V, 100 kHz

750-638 2 Channel, Up / Down Counter, DC 24 V/ 16Bit / 500 Hz

Frequency Measuring

750-404/
000-003

Pulse Width Module

750-511 2-channel Pulse Width Module, DC 24 V,

Distance and Angle Measurement Modules

750-630 SSI Transmitter Interface

750-631 Incremental Encor Interface, TTL level squarewave

750-634 Incremental Encor Interface, DC 24 V

750-637 Incremental Encor Interface RS 422, cam outputs

750-635 Digital Pulse Interface

Serial Interfaces

750-650 Serial Interface RS 232 C

Frequency Measuring

short-circuit-protected, high-side switching

750-653 Serial Interface RS 485

750-651 TTY-Serial Interface, 20 mA Current Loop

750-654 Data Exchange Module

DALI / DSI Master Module

750-641 DALI / DSI Master Module

WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP

96 • System Modules
Technical Data

AS interface Master Module

750-655 AS interface Master Module

Radio Receiver Module

750-642/
000-009

Radio Receiver EnOcean

4.7 System Modules

Module Bus Extension

750-627 Module Bus Extension, End Module

750-628 Module Bus Extension, Coupler Module

DC 24 V Power Supply Modules

750-602 DC 24 V, passiv

750-601 DC 24 V, max. 6.3 A,without diagnostics, with fuse-holder

750-610 DC 24 V, max. 6.3 A, with diagnostics, with fuse-holder

750-625 DC 24 V, EEx i, diagnostics, with fuse-holder

DC 24 V Power Supply Modules with bus power supply

750-613 Bus power supply, 24 V DC

AC 120 V Power Supply Modules

750-615 AC 120 V, max. 6.3 A without diagnostics, with fuse-holder

AC 230 V Power Supply Modules

750-612 AC/DC 230 V without diagnostics, passiv

750-609 AC 230 V, max. 6.3 A without diagnostics, with fuse-holder

750-611 AC 230 V, max. 6.3 A with diagnostics, with fuse-holder

Filter Modules

750-624 Filter Module for field side power supply

750-626 Filter Module for system and field side power supply

Field Side Connection Module

750-614 Field Side Connection Module, AC/DC 0 ... 230 V

750-603 Field Side Connection Module, DC 24 V

750-604 Field Side Connection Module, DC 0 V

Separation Modules

750-616 Separation Module

750-621 Separation Module with Power Contacts

Binary Spacer Module

750-622 Binary Spacer Module

End Module

750-600 End Module, to loop the internal bus

WAGO-I/O-SYSTEM 750

ETHERNET TCP/IP