Post by thn-power on How to change OPC NodeId IdentifierType ^{CODESYS Forge talk (Post)}
Hi Yet another OPC UA question. When setting up a OPC server using "Communcation manager" (Symbol set and information model) in Codesys the NodeId is always given as "opaque" type. At least when browsing using UAExpert. Other standard OPC objects use numeric (or string) identifier, but for some reason my variables seems to get opaque/binary type. See attached photo. How can I change this? I can't see that this is a parameter in the CodesysControl.cfg. Can this be specified in the information model nodeset? And is it possible to specify the exact numeric or string NodeId for each instance? And on a related topic, is there a way to export the OPC server nodeId's with variable name so that it can be imported in a OPC Client? The .xml files in the project folder does not seem to contain the NodeId.
Last updated: 2024-09-20

Post by imdatatas on MC_CamIn did not work properly with SMC_FreeEncoder on SoftMotion 4.17.0.0 ^{CODESYS Forge talk (Post)}
Hi @tk096, Thank you for your response. Here is example project file and some screenshot for your analysis regarding this matter. In order to reproduce the problem on your side and make it independent of the hardware, I simulated the encoder counter incrementally for the master in this example. I configured a virtual axis as the slave motion axis. The problem occurs in the same way in the real hardware configuration (servo drive connected to Ethercat and hardware incremental encoder) in MC_CamIn. I hope this example helps you see the problem on your side and understand and find the source of the problem with FreeEncoderAxis for Softmotion 4.17.0.0. Best Regards, Imdat
Last updated: 2024-12-19

Post by sigurdrb on OPC server in "Communication manager" ^{CODESYS Forge talk (Post)}
Hi! I was thinking of switching the OPC server config from "Symbol Configuration" to the "Communication manager" in the device tree. I Have a lot of arrays of structs that I have previously declared in the "Persistent Variable" object in the device tree. It seems as it is not supported to directly expose persistant variables to the OPC server like the "older" way of doing it in the symbol config. Is this correct? Do you recommend to just do it the old fashioned way, or should I edit the structure of the global variable list / persistant data / OPC server and set up the OPC server from the "Communication manager" object?
Last updated: 2025-01-20

Post by ph0010421 on Stepper Drive with Ethercat ^{CODESYS Forge talk (Post)}
Hello That's certainly CiA402. I'll attach a part of the manual for my servos, but the state diagram should be the same at yours. To be sure, get one from your manufacturer. Look at the bits in the StatusWord to see where you are in the diagram, then twiddle the bits in the ControlWord to get you to the next step. Then there are other bits in the StatusWord to tell you 'InPosition' and things like that. From the screenshot, as it mentions only 'PositionProfile' the driver will create the motion profile. So you need to put a target position in here - there should be profile velocity somewhere? Possibly, you need to write these with SDO's? At the minimum, you need to write a value to 0x6081, 0x6083 and 0x6084 (velocity, accel, decel)
Last updated: 2024-03-22

Post by tecnocons on Trouble Writing Files to External Paths in CODESYS ^{CODESYS Forge talk (Post)}
Hello everyone, I'm encountering an issue in CODESYS regarding writing files to external paths. Despite correctly configuring the placeholder in the CODESYSControl_User.cfg file to allow access to an external folder, CODESYS doesn't seem to write any files, and no errors are reported. The issue on the older versions was absent with no placeholders. I've checked the operating system permissions, and they seem to be in order, but the issue remains. Has anyone faced a similar situation or has any suggestions on how I might resolve this problem? Any help would be greatly appreciated. Thank you in advance for your support. I'm using raspberry PI as a logger. RPI3 Buster Codesys 32bit SL V4.11 Codesys Win64 3.5.20 [SysFile] PlaceholderFilePath.1=/home/pi/scan, $SCAN$
Last updated: 2024-04-09

Post by sigbjorn-kleppe on How to display only legend description and not variable name ^{CODESYS Forge talk (Post)}
Hello, I have a question regarding the Trend and LegendDisplayer visualization elements. As the provided image suggests, I am trending two variables which show the torque of two motors in terms of % of max load. Below the trend element, is the LegendDisplayer element which correctly displays the name of both trends. But also, it displays the actual variable name in parenthesis, which I do not want. Currently, the name is set by entering a description for each variable in the trend recording settings. But I can't seem to find any option to display only this description. Is it possible to only remove the variable name used in the software? I'm using CODESYS 3.5.21.50. Thanks in advance!
Last updated: 2026-09-23

Post by sigbjorn-kleppe on How to display only legend description and not variable name ^{CODESYS Forge talk (Post)}
Hello, I have a question regarding the Trend and LegendDisplayer visualization elements. As the provided image suggests, I am trending two variables which show the torque of two motors in terms of % of max load. Below the trend element, is the LegendDisplayer element which correctly displays the name of both trends. But also, it displays the actual variable name in parenthesis, which I do not want. Currently, the name is set by entering a description for each variable in the trend recording settings. But I can't seem to find any option to display only this description. Is it possible to only remove the variable name used in the software? I'm using CODESYS 3.5.21.50. Thanks in advance!
Last updated: 2026-09-23

Post by imdatatas on The default ramp type selection in SoftMotion V4.18.0.0 is Quadratic ^{CODESYS Forge talk (Post)}
Dear @gseidel, Thank you for your clarification. I fully agree that the quadratic ramp type may have certain technical advantages. However, the main problem is backward compatibility and consistency across projects. In many automation projects, application developers rely on the fact that creating a new axis object will behave exactly the same way as in previous versions. With SoftMotion V4.18.0.0 and later, if an application developer adds an axis and overlooks the changed default, the motion function blocks behave differently than expected. In particular, since the Jerk value in SM3_Basic function blocks is ineffective in trapezoid ramp type, users are accustomed to leaving this parameter empty in their projects. In many existing projects, this variable has not even been assigned. When the default is changed to quadratic, the Jerk parameter suddenly becomes relevant, which can cause errors or unexpected behaviour in the field. From a user perspective, a default setting should always be the “safe” and “expected” option, while alternative options (like quadratic) can be selected manually if desired. Keeping the default as trapezoid ensures compatibility with existing projects and prevents unexpected issues, while still allowing users to benefit from quadratic ramps if they explicitly choose so. For these reasons, I kindly ask you to reconsider making trapezoid the default again. This would significantly reduce the risk of unexpected behaviour in future projects while still preserving the advantages of the quadratic ramp type for those who actively select it. Of course, the final decision is entirely at your discretion. Best Regards, imdatatas
Last updated: 2025-09-26

Post by enricoghisla on Functional block ^{CODESYS Forge talk (Post)}
How can i access to the variable in the FB from outside without put them in the in/out?
Last updated: 2024-04-16

Post by enricoghisla on Functional block ^{CODESYS Forge talk (Post)}
How can i access to the variable in the FB from outside without put them in the in/out?
Last updated: 2024-04-16

Post by mrtt on Nach Neuinstallation Plug-In Fehler ^{CODESYS Forge talk (Post)}
https://forge.codesys.com/forge/talk/Engineering/thread/3d0a6d3317/ Hallo, ich wollte mich etwas in Codesys einarbeiten für zukünftige Projekte. Aber ich scheitere schon an der Installation auf zwei PCs (Win10 / Win11). Problem wie im oberen Link, an beiden PCs, aber unterschiedliche Plug-Ins. Laut Installer sind die Pakete aber Installiert, wenn ich sie Deinstalliere kommen andere Meldungen :D... 3.5 19 habe ich auf Win 10 irgendwann immerhin mal zum Starten bekommen. Wenn ich dann an die Pakete mit den Paketmanager gehe, bekomme ich aber während der Installation auch immer die Fehlermeldung. Was kann da los sein? Ich versuche heute noch einen 3. PC, aber irgendwie ist das ja nicht die Lösung :(. Vor allem das es immer andere Plugins sind zwischen 3.5 19/21 und Win10/11. Also da ist irgendwie keine Richtung drin :(. Kann mir aber nicht vorstellen das dass die Regel ist, sondern ich vermute das ich da was falsch mache. Oder eine andere Abhängigkeit / Installation etwas zerschießt... Grüße Malte edit: auf einem frischen Win11 gehts, was ist mi Codesys da nicht in ordnung? edit2: Ok ich habe alles was mit C++ und Runtime war vorher Deinstalliert. Nach der Installation musste ich aber immer noch Plug-Ins korrigieren. Dann ist Codesys gestartet aber eingefroren. Geholfen hat dann noch das deinstalliere von CodeMaster.
Last updated: 2025-11-27

Post by spiessli on Softmotion axis to CANopen Maxon IDX drive ^{CODESYS Forge talk (Post)}
Thanks for the advise, indeed, this was somewhat, what my intention was. I tried around again with EDSes and DCFs, anyway. It appears that the DCFs end up in a subfolder in the attach device dialog. Astonishingly, when attaching the DCF version I get a device in the device tree, where I can add a SoftMotion axis, whereas when I attach the device not in the subfolder, then I cannot. Further astonishingly, when looking in the CANopen parameters in supported profiles, "402" is listed in the case of the DCF variant, whereas in the EDS variant "0" is shown. Comparing EDS and DCF files I cannot guess, where the difference is coming from. I cannot tell either why I have always attached the EDS variant and apparantly never the DCF variant. As I am not in the lab right now, I cannot test if the connection actually is working. Thanks again, spiessli
Last updated: 2024-01-07

Post by imdatatas on CFC editor: enable inline value entry on unconnected input pins (as in Ladder Logic editor) ^{CODESYS Forge talk (Post)}
In the CODESYS Ladder Logic editor, there's a really practical feature available while logged in (online) to the PLC: for an existing function block (e.g. TON or MC_MoveAbsolute), double-clicking on an unconnected input pin directly opens a value entry window right in the editor — with no need to assign any variable — and you can type a value directly. Likewise, if the input pin is of an ENUM or STRUCT type, it lets you pick a value of that type straight from a dropdown list. It also doesn't require assigning a variable or adding it to a watch list, etc. Unfortunately, in the CFC editor you can't write values directly to those unconnected input pins the way you can in Ladder — CFC only supports monitoring/display there. I wish this existing Ladder editor feature were also available in CFC — it would make the CFC editor far more usable. I think this would be a relatively small addition to the CFC editor, but it would make a real difference in daily commissioning and debugging work. It would be great to hear the development team's thoughts on whether this could be considered for a future release. Thanks in advance for reading!
Last updated: 2026-09-10

Post by berto on Opening PDF in Web Browser in Target Visu HMI ^{CODESYS Forge talk (Post)}
Hi everybody, I've been facing problems with the PDF visualization in Web Browser. I am trying to open a pdf file called 'sample.pdf' which I manually saved inside PlcLogic/visu folder. I am setting the web browser URL as: 'http://127.0.0.1:8080/sample.pdf' but I get 'refused connection'. I got a similar error trying to open https sites and I discovered that I can only open http websites. Opening 'http://de.wikipedia.org' everything works fine. I also tried to check using code whether the sample.pdf is present in the directory. Unfortunately, when I try to read directories of 'PlcLogic' I get file FILE_OPERATION_DENIED (I am using File.DirList). I would like to be able to open PDF files in web browser. Possibly to move new PDF files in the folder as my customer wants to display different pdf manuals on the hmi. Here you find some screenshots and my .project. I am using Codesys 3.5.19.70. Best regards, Berto
Last updated: 2024-07-11

Post by pernockham on Engineering IDE from linux? ^{CODESYS Forge talk (Post)}
I have done the switch (linux mint, virtual windows through QEMU/KVM) now and is generally pleased. Have had problems in two areas initially. To bridge IP to the Virtual unit (solved), I overthought things initially. Solution. Configure manually a bridge in the mint-"network connections". Use that bridge in the Qemu settings as "Bridge device", "Device name": "name of the configured bridge" Figure out where to store the projects. I started out have the data in linux world (sort of) and linking it the windows with "virtio-fs". That had some serious impact though on git-handling. It seems that virtio-fs interpreted any file-path as lowercase only even if there were uppercase, resulting in git not able to sync files between its repository and the source code (it created a new file-path for me with only lowercase). Then I switch to samba-share instead and this works much better, though (git-actions) is a part that still has low performance with lots of waiting for file-actions. What should be the best way of handling the source/git? Edit to answer myself: Save the project "locally" in windows, then a lot of slow performance is avoided. Then a git-remote sync for backup.
Last updated: 2025-05-08

Comments in arrays and assigning RST coil's to 600 outputs ^{CODESYS Forge talk (Thread)}
Comments in arrays and assigning RST coil's to 600 outputs
Last updated: 2023-08-31

How to access files correctly in Linux ^{CODESYS Forge talk (Thread)}
How to access files correctly in Linux
Last updated: 2023-09-12

Network Variable List in Codesys 3.5 on CAN ^{CODESYS Forge talk (Thread)}
Network Variable List in Codesys 3.5 on CAN
Last updated: 2023-08-05

Save jitter measure of main task in file ^{CODESYS Forge talk (Thread)}
Save jitter measure of main task in file
Last updated: 2020-08-07

How to read structure in CodeSys using pythong script? ^{CODESYS Forge talk (Thread)}
How to read structure in CodeSys using pythong script?
Last updated: 2017-10-09

Add Commands in the menu to call specific PY script ^{CODESYS Forge talk (Thread)}
Add Commands in the menu to call specific PY script
Last updated: 2016-06-22

Anfängerfrage: Eingänge und Ausgänge in FUP verbinden ^{CODESYS Forge talk (Thread)}
Anfängerfrage: Eingänge und Ausgänge in FUP verbinden
Last updated: 2009-01-12

Doubt about the 'for loop' in Structure text! ^{CODESYS Forge talk (Thread)}
Doubt about the 'for loop' in Structure text!
Last updated: 2009-07-06

How to create a header in a .csv datalogger ^{CODESYS Forge talk (Thread)}
How to create a header in a .csv datalogger
Last updated: 2022-11-18

Using ScriptEngine in C# for Creating Codesys Project ^{CODESYS Forge talk (Thread)}
Using ScriptEngine in C# for Creating Codesys Project
Last updated: 2019-06-24

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