Post by hoatran on Use third party actuator with IO-Link Master (IFM) ^{CODESYS Forge talk (Post)}
The generic sensor FB is for controlling the sensor via its cyclic input (PDI) and output (PDO). In this case, ifm raw cyclic input and output data are WORDs (16 bits total) The PDO data from the Buerkert unit are SINT (8 bits) In this case, I would use the unpackword fb from the CAA memory library to unpack the valve feed back value into the appropriate location.
Last updated: 2024-04-23

Post by valenting on Problem with Licenced Software Metrics ^{CODESYS Forge talk (Post)}
Hi, I tried with another project, using codesys SP20 with the latest visualization installed, I can install the application on my device but it doesn't work I get an exception "invalid license metrics" and the app won't run See attached the metrics in project and allowed by license, and the logs What am I supposed to do ? Everything is in the newest version and the values are lower than allowed and nothing works...
Last updated: 2024-04-26

Post by timvh on Codesys SVN ^{CODESYS Forge talk (Post)}
If you use 3.5 SP10, then Git is not supported. SVN will work fine, but with this version you do need a USB key, because software licenses are not supported with this version. Off course you can work without SVN (or Git), but especially if you work with multiple developers on one project, it will save you a lot of time and you can keep track of all changes and improvements much easier. So how much is this worth to you?
Last updated: 2024-04-30

Post by gseidel on Discontinuity of A/B/C axis movement. ^{CODESYS Forge talk (Post)}
Hi jonasz, you already solved it, I'm answering here for the sake of others with a similar question. You can provide the slope of the A/B/C axis with the U/V/W word. See example 3 here: https://content.helpme-codesys.com/en/CODESYS%20SoftMotion/_sm_cnc_din66025_additional_axis.html If you don't want to change the G-Code, the function block SMC_RecomputeABCSlopes can compute the slopes automatically. https://content.helpme-codesys.com/en/libs/SM3_CNC/Current/SM_CNC_POUs/SoftMotion-CNC/SoftMotion-Function-Blocks/SMC_RecomputeABCSlopes.html Best regards, Georg
Last updated: 2024-04-30

Post by tomas111 on OPC UA Client API ^{CODESYS Forge talk (Post)}
I ran into a problem. Uploaded an example (https://content.helpme-codesys.com/en/CODESYS%20Examples/_ex_uacapi_example.html) After launch. on the emulator. I see that I am having problems: - UaExpert does not connect. There are many servers but no connection. - I can’t transfer the certificate from quarantine to trusted ones. There is some problem with creating the certificate. CS 19.2. If anyone has had similar problems, please give me advice. Thank you.
Last updated: 2024-05-20

Post by yofi on Raspberry Pi 4 POU not running ^{CODESYS Forge talk (Post)}
I have this error where the pou doesn't run even for simple programs like contact and a coil if i remove the pou from the task and put another one it works for one run then it stops working again in the photo we can see a contact is on but the coil connected to it is still not on and the device is in run mode I had this issue again and again any help
Last updated: 2024-06-02

Post by yofi on Raspberry Pi 4 POU not running ^{CODESYS Forge talk (Post)}
I have this error where the pou doesn't run even for simple programs like contact and a coil if i remove the pou from the task and put another one it works for one run then it stops working again in the photo we can see a contact is on but the coil connected to it is still not on and the device is in run mode I had this issue again and again any help
Last updated: 2024-06-02

Post by arcadium on TargetVisu element stacking on top of each other ^{CODESYS Forge talk (Post)}
Hello, I'm new here so if I do something wrong please bare with me. I am using raspberry pi touchscreen made by comfile (CPi-C070WR4C). I also have a window 11 pc where I would like to have a second visualisation, but when I run a TargetVisu with it, all elements of the visualisation end up in the top left corner stacked on top of each other. I have same results running targetVisu on my laptop. Maybe someone had same issues and know the solution? Simas
Last updated: 2024-06-17

Post by s1mon on Two OneWireMaster on one Raspberry PI 5 ^{CODESYS Forge talk (Post)}
All Sensors from the OneWire Master are assigned already to a seperate task with low prio (26) that runs with 1s cycle time. My EtherCat Task is running with Prio 1. It all works fine, until I adjust the CODESYScontrol.cfg or the CODESYScontrol_Usr.cfg files so that it supports a 2nd OneWire Master in the Codeys Runtime. If I change something in this config file and reboot my EtherCat Master stops working.
Last updated: 2025-10-19

Post by mizi on SM_Drive_Virtual ^{CODESYS Forge talk (Post)}
Hi I recently started learning Codesys SoftMotion. At first, I mainly used YouTube videos. I stopped at two videos where the same problem keeps recurring. fbReadPos( Axis := X_Axis, Enable := TRUE, Position => gAxes.lrActualPos); <- axis cannot move I checked the entire code line by line. Zero errors. GPT spits out nonsense, throwing up increasingly worse errors. And when I copy its code, it says the code is wrong and gets stuck in a loop of its own stupidity. Can anyone explain why it doesn't work? Link to the video below: https://www.youtube.com/watch?v=CYa2HvYZgbM&list=PLsEhEcYjG7na0OveU7cqFXBx7ATyGGn0A&index=3
Last updated: 2025-10-21

Post by shaunvdm on OSCAT Scale_r function not working in LD 4.60 works in LAD2 on 3.5.21sp3 ^{CODESYS Forge talk (Post)}
Hi We have picked up an issue OSCAT_BASIC.Scale_r function call not working in the old lad and FBD version 4.60. Gives no output on the function call. When we convert this to LAD2 it works. As can be see by the two screenshot in normal LD not working in LAD2 it works. Please confirm if this is an issue with Oscat or with LAD in 3.5.21sp3, is there an workaround. Regards Shaun
Last updated: 2025-10-23

Post by shaunvdm on OSCAT Scale_r function not working in LD 4.60 works in LAD2 on 3.5.21sp3 ^{CODESYS Forge talk (Post)}
Hi We have picked up an issue OSCAT_BASIC.Scale_r function call not working in the old lad and FBD version 4.60. Gives no output on the function call. When we convert this to LAD2 it works. As can be see by the two screenshot in normal LD not working in LAD2 it works. Please confirm if this is an issue with Oscat or with LAD in 3.5.21sp3, is there an workaround. Regards Shaun
Last updated: 2025-10-23

Post by nxbp on About Compatibility ^{CODESYS Forge talk (Post)}
Let's say I have a CODESYS controller (PLC) with a runtime version around 3.5.19. If I use development software version 3.5.21.40 or a later version that will be released in the future for programming, could there be any problems or malfunctions in the controller's program execution or in the execution of the new, updated function blocks from the newer software? I mostly work with servo-based motion applications, so please keep that in mind when answering, and provide a detailed answer so I don't have to email you again about this topic.
Last updated: 2025-12-11

Post by timvh on History of Alarms ^{CODESYS Forge talk (Post)}
It is most likely related to the existing alarm log files in the Control Win. Depending on how you start up the Control Win, you can find the files in: C:\Users\<user name="">\AppData\Roaming\CODESYS\CODESYSControlWinV3x64\<unique id="">\PlcLogic\alarms\ Or C:\Windows\System32\config\systemprofile\AppData\Roaming\CODESYS\CODESYSControlWinV3x64\<unique id="">\PlcLogic\alarms\</unique></unique></user> Delete the files in this folder, download your project again and start the application. PS, if you have an older version of CODESYS, the files are in: C:\ProgramData\CODESYS\CODESYSControlWinV3x64\<unique id="">\PlcLogic\alarms</unique>
Last updated: 2026-01-07

Post by peder on Parker Compax3 controlled by Schneider LMC 201 ^{CODESYS Forge talk (Post)}
I have replaced a Parker PAC320 with a Schneider LMC 201 The system has some Parker Compax3 servodrive communicating over EtherCAT. PAC320 is programmed with Codesys 3.5.15. The program is opened in Machine Expert 3.2. But I can not get the commumication running to the Compax3. When I scan for hardware the it seems like the Compax3 is registated, but not the motors. Anyone that have succeded this replacement?
Last updated: 2026-01-13

Post by gseidel on Scara3 kinematic robot error ^{CODESYS Forge talk (Post)}
Hi aniket-b, the maximum cycle time of the EtherCAT_Task is very high, ca. 35 ms. Could you please check if this is just the first cycle after starting the application or if it happens during motion? (You can reset the times in the task configuration by right-clicking in the "monitoring" tab.) Another thing to try: put the SoftMotion_Planning task on a different core. Best regards, Georg
Last updated: 2026-01-07

Post by winki on Error in licence activation ^{CODESYS Forge talk (Post)}
Hello, Despite receiving an activation message after entering the license number, I don’t have any license installed on my gateway. I went to check in /var/opt/codesys/ and there is no License file. I searched the entire gateway for a .lic file and found no license. I’m really stuck—how can I fix this, please? When I am using the licence tools I got this picture: But nothing that have been activated. Loic,
Last updated: 2026-02-03

Post by winki on Error in licence activation ^{CODESYS Forge talk (Post)}
Hello, Despite receiving an activation message after entering the license number, I don’t have any license installed on my gateway. I went to check in /var/opt/codesys/ and there is no License file. I searched the entire gateway for a .lic file and found no license. I’m really stuck—how can I fix this, please? When I am using the licence tools I got this picture: But nothing that have been activated. Loic,
Last updated: 2026-02-03

Post by william on Unit testing support / libraries for EcoStruxure Machine Expert (CODESYS) ^{CODESYS Forge talk (Post)}
Hi, We are investigating available libraries and frameworks for automated PLC unit testing in Schneider EcoStruxure Machine Expert. Specifically, we are looking for: Assertion libraries or test frameworks compatible with Machine Expert CODESYS‑based solutions that are not TwinCAT‑specific Any official or community‑recommended approach for unit testing FB/FC logic offline We have found several open‑source examples, but many appear to be TwinCAT‑dependent and therefore not compatible. Are there any known libraries, best practices, or recommended approaches for implementing unit tests in Machine Expert? Thanks in advance.
Last updated: 2026-02-19

Post by alexgooi on No Bootproject possible ^{CODESYS Forge talk (Post)}
Dear Forum, When using a online-change I often get the following message: No Bootproject possible in this state: application out of memory. Perform full download first. I'm using Codesys virtual control for linux SL running on a docker server with plenty of memory available, therefore I’m not expecting a hardware limitation. Is there a setting available to for example reserve more memory, so the controller is not that quick out of memory? thank you in advance. Alex
Last updated: 3 days ago

Post by adamrobotic on llcallback() iec exception caught cmpid=0x00000002, eventid=0x00010008 ^{CODESYS Forge talk (Post)}
Hi All, Recently I have been experiencing a issue in CodeSys SP16 Patch 3, with a exception which comes up after I have made several online changes. callcallback() iec exception caught cmpid=0x00000002, eventid=0x00010008, after I experience this fault then I receive a error message for any subsequent online change "online change failed, no task gap within 10000ms". To recover either the controller needs a orgin reset, which will allow online edits thereafter until falling back into the loop. I am using a TURCK TX707 product which is controlling robot trajectory, We have hard coded the coordinate data rather than using persistence variables so hence the need to do online changes consistently. I have read on the forum other people have experienced similar issue with the online task gap, but I have no task which have same priority and also monitored the CPU usage and have not seen it go above 13%. Anyones help would be much appreciated, thankyou.
Last updated: 2023-08-18

Post by timvh on Detect "Cancel" Press in FileOpenSave Dialog ^{CODESYS Forge talk (Post)}
Maybe there is a better way, but a long time ago I created a test application that worked like this: With a button I opened the dialog and I added a "Input configuration - OnDialogClosed" "Execute ST-Code" action to this same button which called the following Function when the dialog was closed: F_OnFileDialogClosed(pClientData); Below this Function which handled the result: // This function is called from the visualization when the dialog is closed. FUNCTION F_OnFileDialogClosed : BOOL VAR_INPUT pClientData : POINTER TO VisuElems.VisuStructClientData; END_VAR VAR dialogMan : VisuElems.IDialogManager; FileOpenCloseDialog : VisuElems.IVisualisationDialog; result : VisuElems.Visu_DialogResult; _sFileName : STRING(255); END_VAR // the DialogManager is provided via the implicitly available VisuManager dialogMan := VisuElems.g_VisuManager.GetDialogManager(); IF dialogMan <> 0 AND pClientData <> 0 THEN FileOpenCloseDialog := dialogMan.GetDialog('VisuDialogs.FileOpenSave'); // gets the FileOpenSave dialog IF FileOpenCloseDialog <> 0 THEN result := FileOpenCloseDialog.GetResult(); // gets the result (OK, Cancel) of the dialog IF result = VisuElems.Visu_DialogResult.OK THEN // Original code gvlFile.FileListProvider(); _sFileName := CONCAT(gvlFile.FileListProvider._stDirectory, gvlFile.FileListProvider.stFile); // do something with this file name... END_IF END_IF END_IF
Last updated: 2023-09-19

Post by ewi04 on Git with visu ^{CODESYS Forge talk (Post)}
Hi, I have several problems with the git extension. Situation: I am working with Codesys v3.5 SP19 Patch 1 and Git V1.2.1.0. The remote repository is GitLab Community Edition v16.1.2. I am working on a project with one other person. Problems: 1: After each start of Codesys all of the visu pages are marked as modified. So we have to discard all changes first. Otherwise the history is not clean and the merge request becomes more complex. I tested it with a new project and only local. I made the observation, that a page is not marked as modified when it is committed a second time (after a restart of codesys). But this is necessary after every change of a page. However, since we are working in a team, it seems we are playing ping-pong and so all pages are marked as modified on each startup. 2: Each image pool causes a parent child conflict. Also in my local project. The only solution that I have found, is to ignore the issue. Does anyone have the same problems? I think it looks more like bugs. Thanks ewi04
Last updated: 2023-11-22

Post by psychoengineer on Cannot Save CSV File on Windows Computer Using CODESYS and Control Win ^{CODESYS Forge talk (Post)}
I am currently working on a project using CODESYS and Control Win on a Windows computer. I've encountered an issue where I am unable to save a CSV file. I have followed the standard procedures and used the appropriate file handling functions, but the file is not being created or saved as expected. IF xStartTest THEN sFileName := '\logs.txt'; sFileName := CONCAT(gvl.g_sMainDirectory, sFileName); sFileNameCopy := '\CAAFileCopy.txt'; sFileNameCopy := CONCAT(gvl.g_sMainDirectory, sFileNameCopy); //eWriteState := FILE_OPEN_TRIGGER; xTestDone := FALSE; xError := FALSE; xStartTest := FALSE; END_IF VAR_GLOBAL g_sMainDirectory : STRING := 'C:\LogFiles'; // file path for CSV file END_VAR Despite this, the file does not appear in the specified directory, and no error messages are being generated. I've checked the directory permissions and ensured that the path is correct. Has anyone else experienced a similar issue or have any suggestions on how to resolve this? Any help would be greatly appreciated. Thank you!
Last updated: 2024-07-04

Post by to-ke on Errors with VisuUserManagement library ^{CODESYS Forge talk (Post)}
Hallo zusammen, hi all, ich habe den gleichen Fehler. Auf einem Raspberry Pi geht der Fehler weg, wenn ich alles bereinige und dann vollständig übersetze. Wenn das Projekt im Codesys Development System wieder neu geladen wird ist der Fehler aber wieder da. Mit eine Win V3 x64 PLC kann ich den Fehler nur unterbinden wenn ich auf der HMI das VUM_Login einbinde. Dieses brauche ich aber nicht, da ich die HMI für das User Management selbst gestaltet habe. Das funktioniert auch. I have the same error. On a Raspberry Pi the error goes away if I clean everything and then compile completely. When the project is reloaded in the Codesys Development System, the error returns. With a Win V3 x64 PLC I can only prevent the error if I integrate the VUM_Login on the HMI. But I don't need this because I designed the HMI for user management myself. That works too. Anyone have an idea to fix this problem. Many thanks
Last updated: 2024-07-09

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