Post by yannickasselin on Engineering IDE from linux? ^{CODESYS Forge talk (Post)}
I have been running Codesys IDE in VirtualBox on a Linux Mint host for many many years without issues. I use it every day and it works great. I wouldn't mess around with wine. Would probably just be a waste of time. Codesys Go might be the future of PLC programming on Linux! Can't wait to test it.
Last updated: 2025-03-17

Post by otbeka on CAA File Handling: "Read only" error ^{CODESYS Forge talk (Post)}
Hi, On CODESYS V3.5.19.50 I am using the latest 3S File Access library (CAA File & CAA Types) to save and retrieve configuration data from the User Data section of an SD card, via file called config.txt. The application reads the file to memory once upon initialisation, and then the only other operation is overwriting the file with the updated configuration whenever the user changes the settings. An issue is ocurring, seemingly randomly, where the config.txt file, and all surrounding directories, cannot be written to by the unit, returning a READ_ONLY_CAA error upon file open. This sometimes does not clear even after power-cycling the PLC several times, yet checking the file permissions with ls -l shows normal read, write, and execute access. I am wondering if this is caused by the PLC itself or by an issue in my application. I have included my CAA File handler function block (SD_Card_Bin(FB).txt) and any associated types/calls below: TYPE ConfigData : STRUCT Config : ARRAY[0..256] OF STRING(64); NumberOfStrings : UDINT; END_STRUCT END_TYPE TYPE Buffer : STRUCT Data : ARRAY[0..SIZEOF(ConfigData)] OF BYTE; DataLength : UDINT; END_STRUCT END_TYPE A case within my MAIN PRG: mode.WriteConfigDataToFile: VisuElems.CURRENTVISU := 'Screen_Write'; IF xModeHasChanged THEN iErrorCount := 0; iRoute := 0; END_IF CASE iRoute OF 0: inBuffer := ConfigData_To_Buffer(GVL.UnitData); xConfigError := FALSE; xDataConfigured := FALSE; iRoute := 1; 1 : //Read Data from Card SD_Card_Bin.strFileName :=FileName; SD_Card_Bin.iFileOperation := 2; SD_Card_Bin(xExecute :=TRUE, WriteBuffer := inBuffer, xDone =>xDataConfigured, xError=>xConfigError, strErrorCodes=>strError); IF xDataConfigured THEN SD_Card_Bin(xExecute :=FALSE); IF xConfigError THEN iRoute := 32767; ELSE iRoute :=100; END_IF END_IF 100: // The end bCurMode := mode.DisplayProcessVariables; 32767: // Config error iErrorCount := iErrorCount + 1; IF iErrorCount > 2 THEN // Repeats 3 times, if no progress abandons and returns error bCurMode := mode.WriteError; ELSE iRoute := 0; // Try again END_IF END_CASE I'd like to rule out my application as the cause of this bug - help via comments or criticism would be greatly appreciated.
Last updated: 2025-03-19

Post by timvh on library is not available ^{CODESYS Forge talk (Post)}
1) In the library manager of your project select "Download missing libraries". 2) In the library manager open the "Placeholders" dialog. In here find the Placeholder which is not referenced to a specific library yet. Click in this line on the Library column and select the latest version of this library.
Last updated: 2025-03-24

Post by mucleus on How do I fix ";Internal Error (x86-64): Invalid type size" error? ^{CODESYS Forge talk (Post)}
I opened the project file of version 3.5.19.7 in 3.5.21.0. I updated all the environment of the project to the latest and compiled it. When I compile it, I get an error ";Internal Error (x86-64): Invalid type size". How can I fix this error? I will wait for your help.
Last updated: 2025-04-15

Post by andrej on Creating, using an external Function. ^{CODESYS Forge talk (Post)}
Hello, many thanks for your reply. I checked the logs. It seems that dll is not loaded. However other dll such as the Webserver are loaded. Could you tell me what I need to do such that my dll is loaded. (Furthermore I changed the C-Function a bit. I used the M4.exe from the SDK.) Many thanks.
Last updated: 2025-04-23

Post by atone on Change IO-Link Device Interface connected to a Profinet-Slave at Runtime ^{CODESYS Forge talk (Post)}
OK, I figured out that I can simply define all the sensors as 16 bytes IN/OUT, even if they are not all used. EDIT: The negative effect is that each bit is taken into account as an I/O for the license, even if not used.
Last updated: 2025-04-28

Post by andrej on Creating, using an external Function. ^{CODESYS Forge talk (Post)}
One step closer Hello finally the SoftPlc starts to load the dll on start up, however it is not successfull. I create a new minimal example Lib_XMATH.dll. Could please give me a hint, why the dll is not succesully loaded yet. Inputs would be highly appreciated. Many thanks.
Last updated: 2025-04-30

Post by nano on Creating, using an external Function. ^{CODESYS Forge talk (Post)}
the Answer is easy, you don't reapecting the codesys-behaviour and pre-request on a dll/so like you like to create. codesys won't load it about the fact that the dll isn't registered in codesys. check this page for more informations: https://content.helpme-codesys.com/en/CODESYS%20Control/_rtsl_extension_extension_sdk.html
Last updated: 2025-05-14

Post by pafarrell on EtherCAT quick start for advanced programmers ^{CODESYS Forge talk (Post)}
It would be great if there was a thread that had some quick-start links for basic how-to. But one that advanced programmers can jump into. I found this video playlist by SoftMotion-Black, which was very, very helpful: https://www.youtube.com/playlist?list=PLkc8m2OD0r9xJyfTiCBb1vuU_d2yBhjZ_ This person has some other great vids like creating your own custom library, which is awesome for OEMS.
Last updated: 2025-05-14

Post by fionexyan on Codesys Installation Always Freeze when the installing is almost done ^{CODESYS Forge talk (Post)}
Hello Everyone , I have try in repeatedly with uninstall and reinstall the Codesys software and even turn-off the antivirus application before implement to reinstall the codesys ,but at the consequence the problem still same although go with such method, therefore is there any solution for this issue . Thank You .
Last updated: 2025-05-16

Post by chanmina on What is the CFC editor (page oriented) "Add page" keyboard shortcut? ^{CODESYS Forge talk (Post)}
Mouse dragging is not something I want to do. I'd like a shortcut on my keyboard. escape road Alright, I might be a little odd, but any chart editor needs a drawing tool, such as a mouse, trackball, pad, or anything similar.
Last updated: 2025-05-27

Post by arwie on Use MC_Home without enabling the drive for homing method 35 ^{CODESYS Forge talk (Post)}
This is a homing routine which is controlled by setting mode of operation and started by setting a bit in the control word. If MC_Home is not usable for this homing method then I need to implement the same functionality. But how?
Last updated: 2025-06-25

Post by davidbo on How do I stop/start logging in my code using AC_Datalog with composer ^{CODESYS Forge talk (Post)}
I have on my Pi successfully deployed an application to which with composer AC_Datalog is added. It starts logging automatically. I want a Visualization with a start/stop button controlling the logging. That must be easy. How do I do that?
Last updated: 2025-07-07

Post by davidking on Error, visualisation property handling, VISU_USEPROPERTYINFO ^{CODESYS Forge talk (Post)}
Solution: Disable VISU_USEPROPERTYINFO define Go to Project → Options (or Project → Properties, depending on your CODESYS version). Find the section called Compiler Defines. Look for the define: nginx Copy Edit VISU_USEPROPERTYINFO Delete it from the list, or uncheck it if it’s a checkbox. Save your changes and try compiling the project again. → This is the right approach if you don’t need property handling for visualization elements.
Last updated: 2025-07-09

Post by paulpotat on Where can I find a list of all available runtime configuration parameters ? ^{CODESYS Forge talk (Post)}
Hello, I was wondering if there is a list somewhere of all the parameters that can be used inside the "/etc/codesyscontrol/CODESYSControl_User.cfg" configuration file ? I searched the documentation but didn't find anything. If it doesn't exist, that would be nice to have a little bit more documentation about this file :) Thank you for your help, BR
Last updated: 2025-07-10

Post by installwhat on Opc remote alarms on Linux box ^{CODESYS Forge talk (Post)}
It seems that the hmi sl license only works with windows. If i'm happy using web visu, rather than target visu, is possible to use remote opc-ua remote alarms without the hmi sl? Maybe it can be included in a different license that works on Linux? thanks
Last updated: 2025-07-16

Post by wbj0t on one variable signed to modbus tcp server device and modbus serial device ^{CODESYS Forge talk (Post)}
Hi. Raspberry pi 4 runtime. Runtime version 4.16, IDE version 3.5.21. Is it possible write new value for variable via modbus tcp or serial devices when both enabled? As I see - not. What can I do? It is terrible restriction.
Last updated: 2025-07-17

Post by cebador on trouble with running a python script on Raspberry via Codesys ^{CODESYS Forge talk (Post)}
Hello, I am new to Codesys and I'm having trouble with running a python script on my Raspberry. SysProcessExecuteCommand2 gives result 25 and nothing happens. I used chmod +x and chmod 666 on my script. In terminal it's working when I'm using the same command line as in Codesys. Code in attatched screenshot. Thank You in advance.
Last updated: 2025-07-23

Post by rajatdas2005 on Codesys Virtual control SL ^{CODESYS Forge talk (Post)}
Thanks once again. Right now the codesys virtual control sl docker is using the host ip itself not the docker ip. so the local host edge gateway was able to search the virtual plc. so you are telling me instead of local host edge gateway I should use the edge gateway docker version?
Last updated: 2025-08-08

Post by astrum on OPC UA Information Model Error "Dimensions must be empty" ^{CODESYS Forge talk (Post)}
Hello everyone, does anyone know what this error means: Internal Error in code generation for http://opcfoundation.org/UA/DI/: Dimensions must be empty. I use the standard information models from Codesys and haven't even called the Information Model, but my program can't compile. the only thing I did was to insert the Communication Manage.
Last updated: 2025-08-11

Post by wagokurt on TargetVisu option missing in IDE ^{CODESYS Forge talk (Post)}
I have installed both the Codesys Control for Linux SL 4.16.0.0 and Target Visu for Linux 4.16.0.0 packages in Codesys 3.5 SP21 Patch2. When I try to add a target visu, it is missing. I have spent hours on this and tried different machines, all behave the same way. Is this a bug?
Last updated: 2025-08-21

Post by morecoffee on Control for Raspberry Pi 4.17 ^{CODESYS Forge talk (Post)}
I am currently having the issue that Codesyscontrol only runs for 10 seconds on my Raspberry Pi 4. I believe the problem is because the MAC address range is of the Raspberry is 88:A2:9E:XX:XX:XX. When will Codesys Control For Raspberry Pi 4.17.0.0 be released to fix this issue?
Last updated: 2025-08-22

Post by nilanjan on I want to show the current recipe name in the visualization screen ^{CODESYS Forge talk (Post)}
I am having some trouble showing the current recipe name in visualization i am not using the RecipeManCommands i am using the inbuild visualization feature of Saving and Loading recipes. I need it so the user would have a track on which recipe is being used currently.
Last updated: 2025-08-24

Post by stevens on No option to create "Parameter List" in library ^{CODESYS Forge talk (Post)}
I am struggling with this issue right now (again). I have nested structures with configurable array sizes. In the past I ever used parameter list. Very easy way! As of now I cannot find any solution. Ridiculous that they deprecated it without an alternative solution.
Last updated: 2025-08-26

Post by eksheep on Unit Tests and C007: Unknown Type ^{CODESYS Forge talk (Post)}
Hello, I am attempting to implement unit tests for my POUs. When building and running the unit tests I receive error C007: Unknown Type for all types defined in the library, Standard, 3.5.18.0. Which is included in the POU Library Manager. Any input would be appreciated. TIA.
Last updated: 2025-08-27

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