Post by l-lll on The plug-in is required by the current version profile but has not been installed ^{CODESYS Forge talk (Post)}
Hello everyone, I meet this problem after installing Codesys SP20 Patch 5 on Windows 11 while the dialog box shows that the installation process has been successfully completed. Every time I open Codesys I get an error that says (Attached image): 'One or more issues ocurred with the current version profile. Please contact the vendor to resolve these problems. The plug-in {....} (Exactly x.x.x.x) is required by the current version profile., but has not been installed. It is highly recommended that the tools is terminated. Do you wanto to terminate now?' Can someone help me please, thanks very much！
Last updated: 2025-05-14

Post by edson-bueno on IFM Controller Connection Issue ^{CODESYS Forge talk (Post)}
Hi, Could you please send an print of your ethernet adapter info? Ip addr Subnet Mask Default Gateway Also, check if the gateway service is active in your windows. Win+R > services.msc > Look in the list CODESYS Control Win V3 x64 Gateway OR CODESYS Gateway V3 Hook up the M12 code D into the ETH port, supply the controller, it should apperars to you. Make sure when you try to connect with the controller, the target of your project has to match with the controller. Otherwise, click on the device in the devices tree > Communications Settings tab > Device > Options > And disable "Filter Network Scans by Target ID". Good luck.
Last updated: 2025-05-29

Post by tk096 on Max lines of code, codesys CNC ? ^{CODESYS Forge talk (Post)}
Hi, this is a bug in CODESYS Softmotion. Due to this bug the size is limited to a maximum of 32767 elements. However, we recommend to use way smaller buffer sizes. You could use a small buffer (it should be big enough so that it does not run empty when the interpolator processes the elements). In the beginning you fill the buffer in PLC_PRG until it is full. Afterwards, you start the interpolator. The interpolator processes the elements and removes them as soon as it travels past them. In PLC_PRG you check whether new elements can be stored in the buffer (NOT QUEUE.bFull). If the buffer has space, you generate the next elements and add them to the buffer (SMC_AppendObj()). I hope this helps you.
Last updated: 2025-06-04

Post by joerg-schneider on SVN: "Include externals" Fehlermeldung ^{CODESYS Forge talk (Post)}
Ich habe eine Bibliothek unter Subversion verwaltet und verwende Teile davon in anderen Subversion Projekten mit "Include externals". Wenn man die Bibliothek mit "Copy (Branch/Tag)" kopiert, lässt sich die Kopie nicht mehr mit "Include externals" in anderen Projekten einbinden. Es kommt eine Fehlermeldung, dass ein Pfad nicht gefunden wurde (siehe Anhang). Auch wenn man das Bibliotheksprojekt direkt auf dem SVN Server kopiert (mit Tortoise SVN), kommt die gleiche Fehlermeldung beim Versuch die Kopie mit "Include externals" in anderen Projekten einzubinden. Ich nutze Codesys 3.5.20.60 mit Codesys SVN 4.6.2.0. Wie kann man Projekte auf dem SVN Server so kopieren/verschieben, dass sie später mit "Include externals" in anderen Projekten verwendet werden können?
Last updated: 2025-07-21

Post by fedex03 on Read Global Variable from an IoT Device ^{CODESYS Forge talk (Post)}
Hello everyone, I am new to the forum, and to programming with CodeSys. I am dealing with IoT device for industry and I should check if a device is able to read/write global variables in an EtherNet/IP Master. Since I do not have an EtherNet/IP PLC, I thought of using CodeSys as a softPLC. I created a program with a set of global variables (GVL) and a task that increments them. I would like to know if I need to enable any options so that the global variables can be read by IoT devices. My device supports Class 2 Class (Explicit Messaging Connection) communication. Thank you in advance for your help.
Last updated: 2025-07-22

Post by timvh on Dynamically enabling/disabling Modbus slave devices in runtime (performance issue with timeouts) ^{CODESYS Forge talk (Post)}
As far as I remember, the Reconfigure functionality doesn't work for Modbus devices. But... Each Modbus device in your device tree has a name. You can set the property "Enable" of this device to FALSE to stop communicating with it. So if one of your Modbus Slave devices name is "MbSlave1" in the device tree, then in your code you can set the Enable to FALSE to let it stop communicating: MbSlave1.Enable := FALSE; Please let us know if this worked on your controller with your application and your CODESYS version. Alternatively you could use the ModbusFB library. See: https://forge.codesys.com/prj/codesys-example/modbus/home/Home/
Last updated: 2025-08-13

Post by rer-code on Codesys 3.5.18.60 – Application Loss and Persistent Data Corruption ^{CODESYS Forge talk (Post)}
Hi, I’m currently managing over 50 PLCs running Codesys version 3.5.18.60. At seemingly random intervals, some of these devices experience a failure where: All persistent variables are lost. Attempting to log in results in the message: “The application does not exist on device. Do you want to create it and proceed with download?” The log shows: “Loading retain-data/bootproject failed.” From what I’ve gathered, this may be due to a corrupted persistent data file, but I’m not entirely sure how to confirm or resolve this issue. If anyone has encountered something similar or has suggestions for troubleshooting or preventing this, I would greatly appreciate your input. Best regards
Last updated: 2025-08-19

Post by bruceae on Special Characters ^{CODESYS Forge talk (Post)}
Hello, I am fairly new to the codesys environment. Is there a reference chart that I can look at in order to write special character in a string? The Special characters that I need to inclue inside the string are as follows; Null Bell Carriage Return I have a TCP_Write command that I am sending to an external device. In order for that device to function properly it needs to see the string with the null and bell characters as the header, followed by the desired command, terminated with the carriage return. Any reference sheet or how to write this in the actual string would be greatly appreciated.
Last updated: 2025-08-26

Post by taywinkel on Virtual Runtime CSV Utility Error ^{CODESYS Forge talk (Post)}
Hello, I am having trouble figuring out the proper location for my virtual runtime to create a .CSV file. No matter the file location I set, I get error 14 (CANNOT_OPEN_DIRECTORY). I have tried multiple different file paths ('/', '/var/opt/codesysvcontrol/PlcLogic', '/var/opt/codesys/'). I understand that there is only certain places that Codesys can read/write. I am also running this virtual runtime in a Podman container. Does anyone know what the location should be? I attached the archive I was using, a project that tests CSV capability that I borrowed from someone else. Thanks!
Last updated: 2025-09-03

Post by monteta on Automation without UI ^{CODESYS Forge talk (Post)}
Hello all, there is my problem. i have a project on a PC A who work properly, I aim to take this project and place it on a Pc B with a blank Codesys installed. All seemd to work, the project is created on the PC B, i create my with with online.create_online_application(project.project.active_application) recover my onlineDevice and try onlinedevice.connect() so that i can use create_live_user_management() but then a problem occure on my connect() saying gateway not configured properly. I have setted my set_credentials_for_initial_user(). when i use the Ui, there is absolutely no problem. an other question, is it possible to use the Start and Stop PLC of codesys Control Systray directly in my python script? So that if it detect that it's stopped, then he automatically start it?
Last updated: 2025-09-25

Post by kevinl on RevPi Connect RS485 ^{CODESYS Forge talk (Post)}
I figured this out on my own with this logic: usually the Serial port on a Raspberry pi is on /dev/ttyUSB0 then you need to set linux.DeviceFile=/dev/ttyUSB in codesys you then must set com port to 1 so i assumed codesys subtracts 1 from the number and adds this to the filename... (in code it would look like this: var comPort : byte := '1'; linuxDevice : string := '/dev/ttyUSB'; filename : string; end_var filename := concat(linuxDevice, (to_string(comPort-1)); filaname then is /dev/ttyUSB0 RevPi uses ttyRS485 as Serial port so you must remove the last number from the name and set the com port to this number +1 i hope this is understandable ;-)
Last updated: 2023-12-11

Post by sean-barton on Function block method default arguments ^{CODESYS Forge talk (Post)}
I have default arguments specified for function block methods but when calling a method, an error is produced requiring me to supply all the arguments despite there being default values. According to the online documentation, under section "Calling a Method" and subsection "argument passing" of the following link: https://content.helpme-codesys.com/en/CODESYS%20Development%20System/_cds_obj_method.html "Passing an argument for an input ... can be omitted ... for which a default or initial value was specified in the declaration..." I have found this to be the case for all Codesys IDEs I've used, 3.5.11, 3.5.16, 3.5.17, 3.5.19. Am I missing something?
Last updated: 2023-12-21

Post by mohammadasif on Blink Function definition is wrong in codesys online help ^{CODESYS Forge talk (Post)}
https://content.helpme-codesys.com/en/libs/Util/Current/Signals/BLINK.html in the above link, please correct your website the following: "Output value, starts with FALSE and switches between TRUE and FALSE for the given high and low times" it should actually be: "Output value, starts with TRUE and switches between TRUE and FALSE for the given high and low times" if not please let me know if this has changed in a util library update, in your older website it has the right definition here: https://help.codesys.com/webapp/blink;product=codesys;version=3.5.11.0
Last updated: 2023-12-28

Post by andrax on Save Recipe on Paspberry ^{CODESYS Forge talk (Post)}
Unfortunately not. The folder does not work. There are neither error messages nor any other indication that this may be due to missing rights. I have searched the entire forum and also tested the Codesys example. The simple recipe management generally does not work! The Raspi crashes with the extended recipe management from the example. I have now found another sample that works. https://forge.codesys.com/forge/talk/Engineering/thread/61c6a04b79/ Many thanks to mcodem. After some trial and error I have found out: xcreate must be called at least once at runtime. After that xload_write and xread_save work All other functions do not work. It is also possible to save to the /home/Documents folder. So it is not due to the rights. It would be nice if Codesys would check where the problem really lies.
Last updated: 2023-12-30

Post by jdjennings1962 on Trouble accessing Math functions in OSCAT library ^{CODESYS Forge talk (Post)}
Hi all, I am trying to utilize the ARRAY_SDV standard deviation function, part of the Math group in the OSCAT library downloaded from the CODESYS store. My Codesys version is 3.5.19.10. When I add the OSCAT to my Library, it shows a subset of the library (Standard) as fully installed and signed (see pic). However, the Math functions are not in this Standard group. The Math functions I need can be viewed as source code in the full OSCAT_BASIC, though this the symbol next to this library suggests it is source only and not fully installed. When I try to declare an instance of the ARRAY_SDV function in a program, it is not known. I have tried reinstalling and Building . . . Any help would be greatly appreciated. Jeff
Last updated: 2024-01-06

Post by davidbo on Does the new license policy means I have to upgrade everything? ^{CODESYS Forge talk (Post)}
We have several old project written with 3.5.17 and 3.5.18 and also some older Until now when a customer ordered a product from us. We just installed (we have a tested image) and added a license Now the license policy has changed and we have to buy a License Control Basic S or M However it only works with CODESYS Development System Version 3.5.19.10 or higher Does that mean we have to upgrade all our old products? That is not a simple task as a previous post has explained with weird error messages from CODESYS V3.5. Next we have to do rigorous testing of our applications afterwards. It is very expensive
Last updated: 2024-01-11

Post by ewi04 on How to upload application file to remote controller (offline) ? ^{CODESYS Forge talk (Post)}
Hi, I am looking for a good way to update a decice remotely. The devices are distributed worldwide and have normally no connection to the internet. The CODESYS Automation Server can't help here. So I want to update the decices via USB stick. I have written my own code* to update the files that are created with ‘Create boot application’. But sometimes strange things happen: visu elements are present, but are not found the application is no longer registered and therefore no longer starts I have not yet found out why these errors occur. Has anyone had similar problems or found a better way? Is there perhaps a CODESYS library or something else? Many thanks! *the code deletes the directories on the device and copies the new directories from the USB stick while the system is running (goes without saying)
Last updated: 2024-02-05

Post by alexgooi on Is it possible in the log to see previous shutdown ^{CODESYS Forge talk (Post)}
Hi DavidBo, In general Codesys is used to control equipment and an exception is the worst thing that can happen in your installation. If you cannot prevent the exception from triggering, you could implement a Try catch statement, with this solution your controller keeps on running and you are able to handle the exception. __TRY //This statement will trigger an exception Result := 4/0; __CATCH(exc) //Handle the exception HandleException(exc, strExceptionText => strExceptionText); // From the Codesys help file //Create a log file //-------------------------------------------------------- __ENDTRY What you also could do is implement implicit checks, these functions cover most of the exceptions (like dividing by zero) See picture But in general avoid a complete controller shutdown!
Last updated: 2024-02-09

Post by arundara on OPC UA Server Stops after 5 consecutive disconnections of ethernet port ^{CODESYS Forge talk (Post)}
Hello Every one, During testing of OPC UA communication between UA Expert software and the CODESYS SoftPLC on a Linux environment, an observation was made. When the Ethernet cable was disconnected and reconnected with 2-minute intervals, on the 5th attempt, the OPC UA connection failed to establish in UA Expert software. At this juncture, restarting the CODESYS SoftPLC enabled the reestablishment of OPC UA communication. The same result was obtained when testing on a Raspberry Pi SoftPLC. What is the reason behind this phenomenon? and whether there are settings to stop this behavior? Please help. Thanks & Regards.
Last updated: 2024-02-13

Post by jtebokkel on Access to the path *** is denied ^{CODESYS Forge talk (Post)}
I am also having this issue. It was working fine for the first 2ish months and is now throwing this error. I can just try and go online again a second time and it works. I'm wondering if there is an environmental variable or something that isn't set that is causing it to use an empty path as a temp directory. The empty path will be the location the app is running from which is that path C:\Program Files\CODESYS 3.5.19.50\CODESYS\Common. The permissions don't allow a normal user to write to that directory which causes the error. It also only seems to happen when there are changes or the build has been cleaned.
Last updated: 2024-02-14

Post by tokamk on Dynamic setting of the modbus tcp/ip slave ip address ^{CODESYS Forge talk (Post)}
Hello, I'm working on a project which includes Panel-PC which communicates with a PLC through Modbus TCP/IP. On the PLC I have a CODESYS code which has Modbus slave objects. The Modbus slave objects have to have manually set IP address in order for them to work properly and the Ip address has to be the PC-Panels's IP. This project is going to a customer and they're using their own IP address realm. So, my question is that is it possible to configure these slaves in some other way, so that the customer doesn't need to modify the CODESYS project? I was thinking that would it be possible to set the IP address of these slaves from external source?
Last updated: 2024-02-15

Post by amy123 on codesys mqtt publish serialization ^{CODESYS Forge talk (Post)}
Hello, I am using the CODESYS IIoT Libraries SL MQTT Publish. Does this publish block only support publishing STRINGS as a readable format? I can publish ENUM, STRUCT, BOOL; however, MQTT Explorer will only display strings. When I use Wireshark, I can see that it is publishing something, but it looks to be publishing a serialized version which is a bunch of 0s or random text. If so, is there any way to deserialize this information back into a readable format? See pictures, where I have a BOOL TRUE that gets published as 001. Then see where I publish a STRUCT and it's an incomprehensible combination of 0s - only the string variable is displayed. Or, is it expected that you convert everything to a string before publishing? Any help is greatly appreciated! :)
Last updated: 2024-02-16

Post by wmoon on Licensing info not available. ^{CODESYS Forge talk (Post)}
Hello, I bought some licenses from CODESYS store. I am trying to install licenses into my device(CODESYS Control for Linux ARM64 SL). But I have a trouble with it. I did it in the following order. Tool -> License Manager Selected Device and Next... Selected Soft container and Next... Select the device and Ok.. And then I always show a message "Licensing info not available. There is no dongle attached to the device." And I tried to click "Install Licenses" button. I saw the message "The value cannot be NULL. Parameter name : continerToLicenses" Could you let me know what I've missed or what I've got wrong?
Last updated: 2024-03-19

Post by mp9876 on Device User Logon ^{CODESYS Forge talk (Post)}
Following up on the invalid user authentication on the target Not 100% sure what the problem was but following my post I managed to create an administrator level user. Then my next issue was that I could not connect to the device. I might have flipped the device from a 64 bit version to a 32 bit version so I did UPDATE DEVICE back to the 64 bit version; still could not connect somehow. Then I did two things at the same time that fixed my problem: Wiped the Codesys Control Win 64 bit version and installed the 32 bit version Installed latest Codesys Control Win V3.5 SP20 (released today) I wish I knew which one of these actions fixed the problem but at least the problem is solved. Hoping this post may help someone one day
Last updated: 2024-03-19

Post by mani-i4point0 on Issue with WebVisu on Raspberry PI ^{CODESYS Forge talk (Post)}
Hi, I am running Codesys Runtime by purchasing 'Codesys control for raspberry pi MC SL', I am trying to use the Variables from my GVL's. Few of the variables used as a Pushbutton form the Visualization. These 'BOOL' Variable getting unlatched automatically even though there is no write function in the Overall project. All of them are 'Read' functions, at the same time few other BOOL variable behaviors are seems to be fine. I have tried, clean all and download, serval time restarted the hardware. Happy to share any any information. Your input to resolve this issue would be highly appriciated. Version Details: codesyscontrol 4.8.0.0, armhf codesyscontrol based on SDK 3.5.19.0
Last updated: 2024-03-20

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