WAGO I/O-SYSTEM 750 510 376 07 User manual

Modular I/O System
ETHERNET StarterKit 2
510 376 07
Quick Start
ETHERNET Fieldbus Controller
750-841
Version 1.0.5

ii • General
WAGO-I/O-SYSTEM 750
ETHERNET StarterKit 2
Copyright ©2008 by WAGO Kontakttechnik GmbH & Co. KG
All rights reserved.
WAGO Kontakttechnik GmbH & Co. KG
Hansastraße 27
D-32423 Minden
Phone.: [phone] – 0
Fax: [phone] – 1 69
E-Mail: [email protected]
Web: http://www.wago.com
Technical Support
Phone: [phone] – 5 55
Fax: [phone] – 85 55
E-Mail: [email protected]
Every conceivable measure has been taken to ensure the correctness and com-
pleteness of this documentation. However, as errors can never be fully ex-
cluded, we would appreciate any information or ideas at any time.
E-Mail: [email protected]
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.

Content • iii
WAGO-I/O-SYSTEM 750
ETHERNET StarterKit 2
CONTENT
1Important Comments .................................................................................4
1.1 Legal Principles........................................................................................4
1.1.1 Copyright.............................................................................................4
1.1.2 Personnel Qualification .......................................................................4
1.1.3 Intended Use........................................................................................4
1.2 Symbols....................................................................................................5
1.3 Number Notation......................................................................................5
1.4 Safety Notes .............................................................................................6
1.5 Scope........................................................................................................6
2Quick Start...................................................................................................7
2.1 Node Assembly ........................................................................................7
2.2 Ethernet Network Start-Up.......................................................................8
2.3 The First Program...................................................................................13
2.4 Program Download to the Controller 750-841.......................................18
2.5 Alternative to the Variable Declaration in the PLC Configuration........18
2.6 Modbus/TCP DLL Application Examples.............................................19
2.7 Information for Programming and Web Visualization...........................20
3Addressing .................................................................................................21
3.1 Comparison of Modbus and IEC1131 Addresses ..................................21
3.1.1 WORD Access...................................................................................22
3.1.2 Bit Access..........................................................................................24

4 • Important Comments
Legal Principles
WAGO-I/O-SYSTEM 750
ETHERNET StarterKit 2
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 con-
tained therein. Any use of this manual which infringes the copyright provi-
sions stipulated herein, is not permitted. Reproduction, translation and elec-
tronic and photo-technical archiving and amendments require the written con-
sent of WAGO Kontakttechnik GmbH & Co. KG. Non-observance will entail
the right of claims for damages.
WAGO Kontakttechnik GmbH & Co. KG reserves the right to perform modi-
fications allowed by technical progress. In case of grant of a patent or legal
protection of utility patents all rights are reserved by WAGO Kontakttechnik
GmbH & Co. KG. Products of other manufacturers are always named without
referring to patent rights. The existence of such rights can therefore not be
ruled out.
1.1.2 Personnel Qualification
The use of the product detailed in this manual is exclusively geared to special-
ists having qualifications in PLC programming, electrical specialists or per-
sons instructed by electrical specialists who are also familiar with the valid
standards. WAGO Kontakttechnik GmbH & Co. KG declines all liability re-
sulting 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 per-
mitted within the framework of the possibilities documented in the manuals.
All other changes to the hardware and/or software and the non-conforming use
of the components entail the exclusion of liability on part of WAGO Kon-
takttechnik GmbH & Co. KG.
Please direct any requirements pertaining to a modified and/or new hardware
or software configuration directly to WAGO Kontakttechnik GmbH & Co.
KG.

Important Comments • 5
Symbols
WAGO-I/O-SYSTEM 750
ETHERNET StarterKit 2
1.2 Symbols
Danger
Always abide by this information to protect persons from injury.
Warning
Always abide by this information to prevent damage to the device.
Attention
Marginal conditions must always be observed to ensure smooth operation.
ESD (Electrostatic Discharge)
Warning of damage to the components by electrostatic discharge. Observe
the precautionary measure for handling components at risk.
Note
Routines or advice for efficient use of the device and software optimization.
More information
References on additional literature, manuals, data sheets and INTERNET
pages
1.3 Number Notation
Number Code Example Note
Decimal 100 normal notation
Hexadecimal 0x64 C notation
Binary '100'
'0110.0100' Within ', Nibble separated with dots

6 • Important Comments
Safety Notes
WAGO-I/O-SYSTEM 750
ETHERNET StarterKit 2
1.4 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 insu-
lating properties. Belonging to this group of materials is: e.g. aerosols, sili-
cones, triglycerides (found in some hand creams).
If it cannot be ruled out that these materials appear in the component envi-
ronment, 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 envi-
ronment (persons, workplace and packing) is well grounded. Avoid touching
conductive components, e.g. gold contacts.
1.5 Scope
These quick start instructions describe the ETHERNET StarterKit 2
with the Ethernet fieldbus controller 750-841 and some basic components of
the WAGO-I/O-SYSTEM 750.
You will find detailed information about operation, assembly and start-up in
the manuals “Ethernet TCP/IP 750-841“ and “WAGO-I/O-PRO CAA“. This
documentation is hence only valid in connection with the appropriate manuals.
Further information
You can also find the manuals “Ethernet TCP/IP 750-841“ and “WAGO-I/O-
PRO CAA“ on our “WAGO-I/O-PRO CAA“ CD-ROM (759-911) and in the
Internet under www.wago.com.

Quick Start • 7
Node Assembly
WAGO-I/O-SYSTEM 750
ETHERNET StarterKit 2
2 Quick Start
2.1 Node Assembly
Build up the fieldbus node as follows (from left to right):
750-841; 750-400 ; 750-501 ; 750-600.
Connect the supplies for the controller and for the power jumper contacts to
the DC 24 V power supply unit 787-602 (see Fig.1).
In this example it would be sufficient to bridge “24V“ and “+“ or “0V“ and “-
“.
Fig.1: 10/100 MBit ETHERNET fieldbus controller 750-841

8 • Quick Start
Ethernet Network Start-Up
WAGO-I/O-SYSTEM 750
ETHERNET StarterKit 2
2.2 Ethernet Network Start-Up
Allocating the IP address is done very conveniently using both the included
serial programming cable and the “WAGO Ethernet Settings“ program.
Connect your PC with the configuration and programming interface of the
node.
Install the “WAGO Ethernet Settings“ program, which you can find either on
the “Tools & Docs“ CD-ROM or on the WAGO Web pages under Service Æ
Downloads ÆSoftware.
After starting, the program identifies the current settings of the node.
Fig. 2: WAGO Ethernet Settings
If a connection timeout occurs, you can retry the connection by using the
“Identify“ button. If the problem persists, check the COM port settings and
cabling.

Quick Start • 9
Ethernet Network Start-Up
WAGO-I/O-SYSTEM 750
ETHERNET StarterKit 2
An IP address always consists of both network and computer addresses. The
network mask determines which bits belong to the network address and which
do not.
Fig. 3: Settings of the PC network card
Select a free computer address from the local network. You can find out the
network address of your PC under Start ÆSettings ÆNetwork and Dial-up
connections ÆLAN connection x ÆProperties. To do so, select the Internet
protocol (TCP/IP) from the selection list and press the ”Properties“ button.
Attention
Assigning IP addresses twice can lead to serious network failures.
IP-Address : 192.168. 1.8
SubNetMask : 255.255.255.0
Network-Adr. : 192.168. 1
Computer-Adr.: 8

10 • Quick Start
Ethernet Network Start-Up
WAGO-I/O-SYSTEM 750
ETHERNET StarterKit 2
Click on the “TCP/IP“ tab and enter an IP address for the node. Then, press
the ”Write“ button to write the change to the node.
Fig. 4: Settings of the 750-841 Controller IP address
Now connect the node to the Ethernet network either directly to a PC using a
crossover cable or to a Hub or Switch using a 1-to-1 patch cable.
Attention
The IP address of the controller can also be assigned using the ”WAGO
BootP Server“ instead of the ”WAGO Ethernet Settings“. In this case, the
allocation is done via the Ethernet interface of the device so that no separate
serial cable is required. However, the assigned IP address will only be used
temporarily. In the Web Base Management (WBM), the BootP protocol must
be deactivated subsequently in order to save the IP address permanently.

Quick Start • 11
Ethernet Network Start-Up
WAGO-I/O-SYSTEM 750
ETHERNET StarterKit 2
To test the connection, open the DOS shell via Start ÆPrograms ÆAccesso-
riesÆCommand prompt, and send a PING to the IP address of the node.
Fig. 5: Testing the connection to the 750-841 Controller with ”Ping“
If you get no response from the node, contact your network administrator.
All settings can also be viewed and modified via the WebBasedManagement
(WBM).
To do so, start your browser and enter http:// followed by the IP address of the
node (e.g. http://192.168.1.12).
The integrated Web server generates the following Web page:
Fig. 6: Home page of the 750-841 Controller’s integrated WEB server

12 • Quick Start
Ethernet Network Start-Up
WAGO-I/O-SYSTEM 750
ETHERNET StarterKit 2
When using a proxy server, the proxy server must be bypassed for local ad-
dresses. Information on how to bypass the proxy server for local addresses can
be found in the help section of your browser under “Proxy server” or “LAN
settings”.
A login is required to access the configuration pages via hyperlinks.
The following users are created by default:
User Password
admin wago
user user
guest guest
Fig. 7: Users and passwords of the 750-841 Controller’s WEB server
Using firmware version (09) and above, the process data can be displayed in
the right window of the ”IO config“ configuration page. Access to process
data is based on the “GenIoConf.xml“ file in the “etc“ folder of the node’s file
system. Data generation is disabled by default and can be activated on the
“Features“ configuration page.
Fig. 8: “IO config“ page of the integrated WEB server
The left-side window of the “IO config“ configuration page shows the hard-
ware configuration that has been created by CoDeSys as usual.
Write permission to the outputs is assigned by the hardware configuration ei-
ther to the “PLC“, the fieldbus 1(Modbus) or the fieldbus 2 (Ethernet_IP).

Quick Start • 13
The First Program
WAGO-I/O-SYSTEM 750
ETHERNET StarterKit 2
2.3 The First Program
Prerequisite:
The WAGO-I/O-PRO CAA software (CoDeSys) has to be installed correctly
and started.
You can start a new project via ÆFile ÆNew.
Example:
Before programming the 750-841 controller, select the controller in the “Tar-
get Settings“ window.
Fig. 9: Target settings
Please select the “WAGO_750-841“ target in this window.
In use of WAGO-I/O-PRO CAA, starting from version 2.3.9.3, you select the
target system "WAGO_750-841_(FW12 -...)", if the WAGO Ethernet Control-
ler 750-841 has already the firmware version 13.
This is to recognize on the basis of the manufacturing number, look at the 5th
and 6th number.
Further information
Detailed Information about the manufacturing number, please refer to the
manual „Ethernet TCP/IP 750-841”.
You can find this manual on the CD-ROM „WAGO-I/O-PRO CAA“
(759-911), on the CD-ROM „ELECTRONICC Tools & Docs“
(Item.-No.: 0888-0412/0001-0101) and also on the Internet under:
www.wago.com
Then confirm the selected target with “OK“ in the dialog box above.
A POU can now be created in the following dialog box. In this example, a new
“PLC_PRG“ is created in “ST“ programming language (Fig. 10).

14 • Quick Start
The First Program
WAGO-I/O-SYSTEM 750
ETHERNET StarterKit 2
Fig. 10: WAGO-I/O-PRO CAA, creating a new POU
Before starting to create a POU, a PLC configuration must be performed.
To do so, change to PLC configuration in the “Resources“ register.
Fig. 11: WAGO-I/O-PRO CAA, PLC configuration
Select „K-Bus[FIX]“ in the PLC configuration and then right-click the mouse
to open the context menu.

Quick Start • 15
The First Program
WAGO-I/O-SYSTEM 750
ETHERNET StarterKit 2
Fig. 12: WAGO-I/O-PRO CAA, I/O configuration, context menu
Select ”Append sub-element“. This will open the I/O configuration window
with the I/O module catalog.
Fig. 13: WAGO-I/O-PRO CAA, with I/O configuration dialog
.In the application example shown in section 2.1, a single 750-400 digital in-
put module has been connected to the 750-841 controller, followed by a 750-
501 digital output module. The 750-600 end module is arranged on the very
right hand side.
In the I/O module catalog on the left, first click on “Digital Input” to select the
750-400 module and then move this module to the right into your selection us-
ing the “Insert“ button.
Then, select the 750-501 module from the I/O module catalog on the left by
clicking on “Digital Output” and move it to the right into your selection using
the “Insert“ button.
If you wish to delete some modules from your selection, select the appropriate
module on the right-hand side and click the ”Delete“ button.

16 • Quick Start
The First Program
WAGO-I/O-SYSTEM 750
ETHERNET StarterKit 2
You can change the position of a module in your selection by selecting and
moving the module using the up and down arrow buttons on the right-hand
side of the window.
The 750-600 end module is not shown in the I/O configuration window.
Then confirm your selection with “OK“.
For each I/O module, you can now determine via ÆModule parameters if the
outputs of a module will be controlled by the controller (PLC) or by a particu-
lar Ethernet protocol (fieldbus 1 = Modbus/TCP or fieldbus 2 = Ethernet/IP)
(Fig. 14).
Fig. 14: WAGO-I/O-PRO CAA, PLC configuration with 750-400 and -501
In this example, we first used the “PLC“ value.
The I/O configuration window now shows the address of each channel, and
thus each individual bit on the module.

Quick Start • 17
The First Program
WAGO-I/O-SYSTEM 750
ETHERNET StarterKit 2
Left clicking on the arrow next to “AT“ will open a text box in which you can
enter a variable name (Fig. 15).
Fig. 15: WAGO-I/O-PRO, Declaration of variables with I/O configuration dialog
Now enter the following variable names:
Input_Bit1 (for the %IX0.0 address)
Input_Bit2 (for the %IX0.1 address)
Output_Bit1 (for the %QX0.0 address)
Output_Bit2 (for the %QX0.1 address)
Then, open the “PLC_PRG“ program from the “POUs“ register and complete
a simple assignment within the statement part of the program:
Output_Bit1 := Input_Bit1;
Output_Bit2 := Input_Bit2;
Fig. 16: WAGO-I/O-PRO CAA, Declaration and statement part of the PLC-PRG program
This way, both the first two inputs and first two outputs are assigned to each
other (Fig. 16).
The program can now be loaded if the test program has been successfully
compiled.
Compilation is initiated via ÆProject ÆRebuild all.

18 • Quick Start
Program Download to the Controller 750-841
WAGO-I/O-SYSTEM 750
ETHERNET StarterKit 2
2.4 Program Download to the Controller 750-841
Click ÆCommunication Parameters in the online menu and create a new
communication channel.
Choose EthernetTCP/IP (3S TCP/IP driver).
Enter the IP address of the coupler under “Address“ (e.g. 192.168.1.12).
Enter port number 2455.
Please note that the simulation is deactivated.
You can now download the program via ÆOnline ÆLogin.
Start the program via ÆOnline ÆRun.
Note
If the program should be permanently stored and be available without re-
newed download on the Controller after a voltage failure, the menu “Online”
-> “Create Boot Project” is selected in the logged in condition. Thus the com-
piled project is stored zero potential protected in the Flash memory. So that
the Controller starts the program automatically after voltage return, the mode
switch (fig. 1) is to switch into the upper position „RUN “.
2.5 Alternative to the Variable Declaration in the PLC Con-
figuration
Instead of addressing bits individually and globally in the PLC configuration,
a whole byte can also be addressed locally in the declaration part of the “PLC-
PRG“ program.
Open the “PLC_PRG“ program under the “POUs“ register and declare the lo-
cal process image as follows:
Input_Byte AT %IB0: BYTE;
Output_Byte AT %QB0: BYTE;
Fig. 17: WAGO-I/O-PRO CAA, Declaration and statement part of the PLC-PRG program
A simple assignment in the statement part of the program could be:
Output_Byte := Input_Byte;

Quick Start • 19
Modbus/TCP DLL Application Examples
WAGO-I/O-SYSTEM 750
ETHERNET StarterKit 2
This way, the inputs are assigned to the outputs (Fig. 17).
The program can now be loaded if the test program has been successfully
compiled.
Compilation is activated via ÆProject ÆRebuild all.
(Continue in section 2.4 “Program Download to the 750-841 Controller”)
2.6 Modbus/TCP DLL Application Examples
Also included is the “WAGO DLL Modbus/TCP“ (759-312) CD-ROM. The
DynamicLinkLibrary (DLL) encapsulates the functionality of a Modbus mas-
ter hence facilitating the creation of your own Windows-based applications.
The procedural DLL can be used in almost any programming language. On the
CD-Rom, you will find examples for Excel VBA, ”Visual Basic 6“, ”vb.net“,
”Delphi 5“, ”MS Visual C++ 6“, ”C#“ and ”LabVIEW 7”.
In addition, you will find the two ActiveX components “ActiveMBT“(Master)
and “ActiveMBTSlave“ that are used in Visual Basic.
Registration is provided by a setup program that will also install the “Modbus
Monitor“ program shown below.
Fig. 18: Modbus/TCP DLL, Modbus Monitor
The “Modbus Monitor“ provides a graphical user interface for all functional-
ities of the “ActiveMBT“ ActiveX code component and allows reading and
writing of data via the Modbus protocol.
Further information and examples can be found on the ”WAGO DLL Mod-
bus/TCP“ (759-312) CD-ROM.

20 • Quick Start
Information for Programming and Web Visualization
WAGO-I/O-SYSTEM 750
ETHERNET StarterKit 2
2.7 Information for Programming and Web Visualization
Further information
Detailed Information about the programming and visualization, especial the
Web Visualization, please refer to the manuals „WAGO-I/O-PRO CAA
(CoDeSys)“.
You can find these manuals on the CD-ROM „WAGO-I/O-PRO CAA“
(759-911), on the CD-ROM „ELECTRONICC Tools & Docs“
(Item.-No.: 0888-0412/0001-0101) and also on the Internet under:
www.wago.com