how to get data from festo codesys v3.5 controllers via opc

8/19/2019 How to Get Data From Festo Codesys V3.5 Controllers via OPC

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IM-CRC/Alexander Weinhard Hallo Welt! 5. April 2011 geändert: 7. April 2011, LPK Entwurf Vertraulich

Open CoDeSys V3.5 and start a new CECC project. Once open right click on “application” in thedevice tree and goto Add Object -> Symbol configuration. Click on Symbol configuration and thenClick “OPEN”. “Symbol configuration “ will be added to the device tree.


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Double click on “Device” in the Device tree to access communication settings. Scan the networkto add Available PLC’s. The default names will be CECC1, CECC2, etc. It is important to know thenames of the PLC’s for the configuration of the OPC server later.

The name of the PLC can be changed

by right clicking on the PLC and

selecting Network properties.


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In POU “PLC_PRG” write a simple program.


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Double click on Symbol configuration. You may have to click the refresh button to update thevariables.


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Add the variables that you want to access via the OPC by highlighting them and click the arrow

The variables listed here

are the variables that will

be accessible by the OPC

server.

Click this icon to change

between Read-Only,

Write-Only or Read &

Write.


7/23IM-CRC/Alexander Weinhard Hallo Welt! 5. April 2011 geändert: 7. April 2011, LPK Entwurf Vertraulich

Go online and download. Make sure to run the PLC and check the program is running.



Now we must configure the OPC server. The OPC configurator is not located in the “Start menu”. It islocated in the program files of CoDeSys V3.5. Navigate to the OPC configurator and run it.



Right click on “Server” and select “Append PLC”



Leave the default settings for “PLC1” as they are.



Selection Connection and click edit to change the PLC connection settings

Enter the name of the PLC to be accessed here.

This should be the same name as shown in the

Communication settings in CoDeSys V3.5.



Click OK and DON’T FORGET TO SAVE. NOT SAVE AS…

You can now exit the Configurator. The OPC server will automatically open in the background assoon as an OPC client wants to access it.



We will now test the OPC server using a simple client called dOPC explorer http://www.dopc.kassl.de/

Download and run dOPC.

http://www.dopc.kassl.de/http://www.dopc.kassl.de/



Right click on “OPC Server” and select “New Server Ins”.

Choose CoDeSysOPCDA from available servers.



Double click on CoDeSysOPCDA to connect to it. This will start the OPC server and upload theSybol configuration file from the PLC. Expand the server tree until you find the tag “Count”


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We will now configure Rensen OPC office link to show tag values in excel.

Open Rensen OPC office link. All available OPC servers will appear including CoDeSysOPCDA



Make sure CoDeSysOPCDA is highlighted and add a new data group.

New Data group



Expand the CoDeSysOPCDA tree to locate the tag “Count”.

Drag the tag into the data group you just created.



Open the Data Group and right click on the tag and select “ Copy Live”



Open up a new excel spreadsheet. Select a cell and right click on it. Select paste special.

Under “Paste link” select “Unicode Text” and click OK.



Go back to Rensen OPC Office Link.

Highlight the Data Group and select the “ Start sampling” button.


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Go back to the Excel Spreadsheet and you see the value LIVE.

how to get data from festo codesys v3.5 controllers via opc

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