Post by struccc on Application failing to boot after system reboot ^{CODESYS Forge talk (Post)}
I started to experience the same issue, after upgrading to 3.5.19 , and still persists with 3.5.20.3 , using CodesysControlWinV3 x64 on Windows. Unfortunately, this is a live application, normally it is running for months without interruption - so it was a surprise at the last cold start... It was not possible to go online with the original version, so I couldn't see the application, or system status, just the log message. First time I manually clean the Application from the PlcLogic directory (there was no coredump file in there), then I could start the runtime service, and do a fresh download, and set the bootproject. I could not try a cold system reboot - it's in a 24/7 production environment, and I was under heavy pressure to start... What I did, I have created a backup from the * complete * runtime directory, from the failed, and fixed version - before and after download. This directory in my case C:\ProgramData\CODESYS\CODESYSControlWinV3x64\55096128 - At the next shutdown, it was sufficient to copy back this backup completely, and could start the runtime service afterwards. Ugly, but local staff with some skills can do it without programming tool... I don't store any live data, configuration, log files, persistent data in this directory - the only reason I need this is to edit the CodesysControl... .cfg file.... And to see the logfiles in emergencies like this. The application concerned doesn't use any retain area. - exactly for these reasons - Maybe that is causing the problem with the newer runtime versions As far as I see, this problem occurs only if the power of the Windows PLC is interrupted without a proper shutdown. Unfortunately, this can happen sometimes. The newer versions, seems tp modify CodesysControl.cfg on the fly, and register the applications, and bootproject information after download. (I don't really see CodesysControl.cfg a proper location for this... but that's just my feeling) So now I had a look at CodesysCotrol.cfg on my laptop and I found: [CmpRetain] ;Retain.SRAM.Size=0x200200 ;Retain.SRAM.Address=0xFA3C5776 ;SimulateSRAM=1 [CmpApp] ;Bootproject.CreateOnDownload=0 ;Bootproject.StoreOnlyOnDownload=0 ;Bootproject.InvalidateByRename=1 ;Bootproject.InvalidateBySetting=1 ;Bootproject.InvalidateNever=0 ;PersistentForce=0 ;RetainType.Applications=InSRAM ;RetainType.Applications=OnPowerfail ;RetainType.Applications=None ;Exception.Hardware.GlobalStop=1 Application.1=MyTestAppNoRetain The last line appeared after download and boot project creation. Maybe... Should set RetainType.Applications=None? I wonder about all these settings, but... Will write separately about it. I hope this helps a little...
Last updated: 2024-11-21

Post by t-probst on Strong Private Key Protection for Encryption Certificates ^{CODESYS Forge talk (Post)}
Hello, We are trying to implement an automated method of adding of a certificate and private key to the Windows certificate store for encrypting CODESYS projects. We want to do this so that users do not have to deal with details of certificates at all and to prevent user error. We are keen on enforcing strong private key protection since it ensures that a password is required for the certificate to be used to decrypt a CODESYS project. When we add a certificate to the certificate store and enable strong key protection using the Microsoft Management Console Certificates snap-in, it works as expected. However, through this method the user may mistakenly not enable strong private key protection. For the certificates we create programmatically (using Microsoft’s Cryptography Next Generation API in .Net 7) bag attributes are added to the certificate and key by the API. These bag attributes are as follows: Bag Attributes localKeyID: 01 00 00 00 subject=C = xx, ST = xxx, O = xxx, OU = xxx, CN = xxx issuer=C = xx, ST = xxx, L = xxx, O = xxx, OU = xxx, CN = xxx -----BEGIN CERTIFICATE----- [encoded certificate] -----END CERTIFICATE----- After using this certificate with bag attributes to encrypt a CODESYS project, it can’t be decrypted, showing this error: "The specified project could not be loaded. Possible reasons might be: - The project file is corrupted or invalid - The project has been saved with a newer version of the programming system. If this is the case, you can open the project in the corresponding version. Choose "Save as..." with the appropriate storage version, and retry again. - You may not have the necessary permissions to lad the project" We know that the bag attributes are causing the issue because if we manually edit the certificate file to remove them before using the certificate to encrypt a project, the project can be decrypted as expected. However, we are unable to automatically enforce strong key protection using this method. Here is a link to a StackOverFlow question that we have posted recently for this issue: https://stackoverflow.com/questions/76922355/enforcing-strong-private-key-protection-for-x509certificate2-objects-in-net-mod Any help is greatly appreciated.
Last updated: 2023-08-22

Post by rkohser on Scripted Git clone / checkout being blocked by "Project Environment" popup ^{CODESYS Forge talk (Post)}
Hi, I am trying to build a CI/CD pipeline around our codesys projects. The only entry point if the git url and branch, as we do not put our project file under source control, so we needed to find a way to git clone from the python scripting engine. This is currently how we do this : system.commands["Git", "Clone"].execute( "ProjectLocation=" + project_dir, "ProjectName=" + project_file_name, "RemoteUrl=" + project_git_remote_url, "GitProjectStoragePath=" + project_git_local_dir, ) system.commands["Git", "Checkout", "Branch"].execute( "PrimaryProjectHandle=0", "BranchName=origin/" + project_git_branch ) This works fine, except that, depending on the environment and the project, the "Project Environment" popup gets displayed to suggest for some updates, and waits for a user interaction, even with the "--noUI" flag injected as parameter. I investigated the VersionUpdateFlags, but the problem is that the git clone is an atomic operation that clones and directly opens the generated project without the possibility to inject any updateFlags argument (only used in the ScripProjects.open() function. I also tried to simulate some keyboard events acknowledge the window from script but I did not find the right location for the SendKeys statement, I think before the git clone call is too early and after is too late. So I am wondering if there would be some other way to do that. Is there some more proper scripting api for the git add on ? Is there a global configuration of the VersionUpdateFlags that would allow the popup to be disabled outside from any project context ? Is there some way to automatically acknowledge this kind of messages in a "--noUI" mode ? What do you suggest ? Thanks for your help, Roland Edit : I managed to solve my problem by following these steps in my pipeline : - create a template of a project and opt file preconfigured not to open the popup - open this project - initialize an empty git repo - add the remote, fetch and checkout the needed branch -> no popup is displayed, hourra Edit2 : The initial question was raised on a CODESYS V3.5 SP18 Patch 2 profile. Since CODESYS 3.5.19.30 a scripting API is available for Codesys Git that allows cloning a project with the support of VersionUpdateFlags https://content.helpme-codesys.com/en/CODESYS%20Git/_git_using_scripting.html
Last updated: 2024-01-19

Post by bjarne-pagaard on Communication between applications on same device/controller/runtime (Win RTE 3.5.20.20) ^{CODESYS Forge talk (Post)}
Hi, I would like to divide a project into multiple applications - as a minimum: one handling visualization and Alarm Manager, one handling I/O and plant control logic. But how to exchange variables between the applications? What have you done to get such a solution? In versions 3.5.19 and earlier, you can have Child applications, where the children can access a GVL in the Parent application. Children apps is no longer possible in 3.5.20 - but you can have 'sibling' apps - Several apps directly under PLC Logic, that is. But how do they best communicate? The Communication Manager / Data Sources Manager is sort of possible via OPC UA, but it seems like overkill and with some limitations - for example no ARRAY OF STRUCT possible this way. If you have separate devices in your project, you can exchange data via 'CODESYS ApplicationV3', but not other applications in the same device (see attachment Datasources.png). You can do it via 'Select the project type'->'Other Project' and select the same project file, but this leads to crashing the Development system when working with the variables afterwards. It would be great to hear your thoughts / experiences on this topic - Bjarne
Last updated: 2024-09-27

Post by kaotic2499 on Upgraded Raspberry 2b to Raspberry 5, Trends Broken? ^{CODESYS Forge talk (Post)}
Hello! Raspberry pi 2b just is getting a bit slow so decided to go for a Raspberry 5. Project is now upgraded to suit Pi 64 SL... so, now although everything runs perfectly... for some reason my trends will not save! its driving me nuts... ^Tried merging tasks with main program & trends ^tried re-prioritizing tasks (shifting 1 - 31 etc) ^Recreated the Trend Recording manager from scratch ^Tried swapping persisitant vars to GVL Retains then non-retains... (Project attached is as per before trial&error) Raspberry Pi 2b still runs "perfectly" though its very chuggy (Still saves the trends, note this is of an pretty much identical project minus the device compatibility) Does anyone have any advice to offer? project attached.... I feel it could be outside of Codesys itself causing the issues, but cant see/find anything on the internet to assist (or anyone else with the same problem as me...) Can attach project in another format (non archive) any assistance is much appreciated!
Last updated: 2025-10-19

Post by rk-gaw on Unhandled exception and refactoring error ^{CODESYS Forge talk (Post)}
Hello everyone. I hope this is the right place to ask for help, this error is causing me a great amount of time loss and I really would like to end this nightmare. I don't know why but at times if I try to Browse -> Display Cross Reference on a variable Codesys just crashes. I'll attach the file with the complete crash report hoping someone can figure why it happend. I think that the unhandled exception comes from the PersisranceManager Module and is connected with the other big problem I'm facing: I cannot refactor in my project, if I'll try to refactor a POU name the whole POU will become "frozen", it's like its desynchronizing from the project and the project cannot find the pointer to the POU once I refactor it. And when I open the project a warning pop-up will show up with the frozen POUs name, but I cannot figure out what the warning is telling me. I'll attach every warning and error pop up the project is showing me, and thanks in advance to anyone who can figure something out.
Last updated: 2025-12-10

Post by simotion on Codesys Softmotion Win V3 x64 ^{CODESYS Forge talk (Post)}
I have a project in Codesys v3.5 sp19 patch2 that contains softmotion virtual axes. I want to simulation the code (softmotion) on the simulated plc on the pc. The controller in the project is a Codesys Softmotion Win V3 x64. I have started up the Codesys Softmotion Win 64 on the pc. However it seems a 3.5 sp14 controller. When trying to download the project, I get a message that target system is different from connected system (3.5.19 vs 3.5.14). How do I set the connected system to 3.5.20 (there seems no way to set the target system to 3.5.14
Last updated: 2023-10-04

Post by grant32 on Codesys ARTI .XML file not creating but working. ^{CODESYS Forge talk (Post)}
Hello, I am working on a project with a Beijer Nexto Xpress. I have done this a few times with no issues but for some reason this time when creating a Symbol Configuration the ARTI .xml file is not being created in the Project Folder. However when manually putting the ARTI tags in the HMI program they are connected and work. So I am just not getting the file to import all the tags. I can do it manually which is fine but no matter where the project folder is saved this occurs. Anyone experienced this? Did not see another forum on it.
Last updated: 2023-10-27

Post by dhumphries on install codesys runtime on linux ^{CODESYS Forge talk (Post)}
I'm running the 3.5.18.20 IDE, installed the control for linux SL package from the installer. Following the directions here: https://content.helpme-codesys.com/en/CODESYS%20Control/_rtsl_install_runtime_on_controller.html it says: Installing the runtime package with CODESYS on the Linux device Click Tools → Update CODESYS Control for <device> SL.</device> I don't have the update option in my tools menu. I've tried it without opening a project, as well as with a project open that uses the control for linux SL as a device. I have found the update device option by right clicking on the device in the device tree, but this only lets me change the device the project is using not load the runtime on the linux computer. Is there an updated instruction somewhere, or do I need to do some further preparation like install additional packages?
Last updated: 2023-11-04

Post by orbis-tertius on 3.5 P20 hangs - no response ^{CODESYS Forge talk (Post)}
Is there anybody can help me with the same problem? I have to migrate created project in ver.3.5.17.0 32BIT with runtime 4.7.0 to ver.3.5.20.0 64BIT with runtime 4.7.11.0 due to the new license. All the libraries and dependencies are updaded and there are no any errors. The first compilation and loading to the controller is being compleated well. After this being done and if I am forced to change any values or change any code in the current project, another compilation will be freezed. This problem can be solved if pressed Build/cleen or cleen all. There is another method to solve this; if project is loaded with excluded object (Alarm Configuration), repeated compilations will be done well.
Last updated: 2024-06-27

Post by timvh on Visuutils FbOpenDialog(Extended) not open Dialog from POUs ^{CODESYS Forge talk (Post)}
I had a similar situation recently where this didn't work, but read to the end to see the solution. The reason is that CODESYS only downloads visualisations (dialogs) if they are part of the project or linked to the project. In your case the dialog is not loaded onto the controller. But the solution is pretty simple: Double click on the Visualization Manager in your application. Select the Tab "Visualizations". Here you can see that your dialog is not "checked". Do this manually and load your project on the controller. Then your code should be able to open the dialog, because now it exists on the controller.
Last updated: 2024-09-28

Post by rockallsue on Frustration-Fueled Feedback on Project File Management and Git Integration ^{CODESYS Forge talk (Post)}
Some developers export ST code manually and edit it in VSCode, then copy it back. However, a more practical approach might be using automation scripts (PowerShell, Python) to extract and inject code into the CODESYS project. You could also check if CODESYS Automation Server or CODESYS API allows better ST access for external tools. https://www.codesys.com/the-system/releases-updates-lifecycle/release-plan-roadmap.html Network drive issues are particularly painful. As a mitigation, you could try using local project storage with periodic cloud sync instead of directly saving to a network drive. Using Rsync or Syncthing for automatic but safe synchronization might reduce risks of file corruption.
Last updated: 2025-06-03

Post by micik on Changed Device of Rapberry Pi to MC SL instead of standard SL and cannot connect anymore ^{CODESYS Forge talk (Post)}
I have a test application and use Codesys Control for Rasp Pi SL. I made a mistake and updated device from MSL to MC SL, and now if I try to go online with archived version of the project I gett error message that IDs are different between project device and target device. Of course, I can go online if I changed device in the project from SL to MC SL, but I'm not sure that is correct. So I have two questions: 1. What is the actual difference between MC SL device and standard SL device when it comes to raspberry pi 4? 2. What change I need to do on raspberry pi4 side to change device back from MC SL to SL? Thank you!
Last updated: 2025-08-05

Post by dkugler on Project loses 'Download time' information ^{CODESYS Forge talk (Post)}
and if you copy or transfer a project to another place, copy not only the .project, copy .compileinfo .bootinfo and .bootinfo_guids then we figured out it is more often possible to go online without full download. If you build an archiv and extract it, some of this files are missing and login isn't possible without download. I work with V3.5 SP16 Patch 4. I don't know if this problem of the archiv is solved in newer Versions/SP's and I don't know what the problem of Codesys is to help out a lot of programers of this very annoying problem or at least help with a workaround
Last updated: 2025-09-18

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 budd7566 on Text size suddenly changed ^{CODESYS Forge talk (Post)}
Iv been working with a Deep Sea Electronics DSE840 for about 6 months. I have a development version of my program working with a state machine and a basic gui interface. I went to implement CAN and suddenly the text on the gui on the controller is much larger than before. I could flash old versions of my project and the text was the correct size, but if i renamed the project file, the text displayed would be large. The visualization in CODESYS always shows the expected size, but not the controller. I did a fresh install of CODESYS and even a new project with only one text box, I cant get the text size on the controller to match what is displayed in codesys to match. Any advice?
Last updated: 2023-12-09

Post by jmohre on External file with relative path ^{CODESYS Forge talk (Post)}
I try to add a simple text file to my PLC application, so that is download everytime the application is downloaded to the target. What I did is to add an external file to the application and this works perfect as long as the external file location does not change. It looks like the external file path is stored absolute in project. But if different users work on the project they may have different locations where for their working directory. Is there an option to store the external file path relative e.g. to the project file? Or does s.o. know a different solution to add a text file to application in order to download automatically with the application? Thanks
Last updated: 2024-01-04

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 damian177 on CM4S GPIO's in Codesys ^{CODESYS Forge talk (Post)}
Hi, I am running my application on device based on Compute Module 4S (Cortex-A72 (ARMv8) 64-bit ). On this device I installed RPi Runtime in 4.11.0.0 version. In my project I use device: Codesys Control for Raspberry Pi 64SL and my project works, but I actually do not have acces to all GPIO's , because GPIOs Compute Module is available only in 3.5.16.0 version and it doesn't work. Properly work GPIOs B+/Pi2 but using this device I do not have acces to all GPIO's in CM4S. Anyone of can tell me how add GPIOs Compute Module 4.11.0.0 to my project ?
Last updated: 2024-05-28

Post by alexgooi on OPC-UA and other communication questions ^{CODESYS Forge talk (Post)}
Dear forum, I currently have a big question mark above my head, and maybe this forum can shine some light on the situation. I recently updated to Codesys 3.15 SP19 Patch 6. And now I’m trying to setup the OPC-UA server, besides that I’m trying to connect to the controller with the Codesys V3 (Ethernet) protocol. OPC-UA I have installed the correct licenses on my controller (Runtime and communication). I’m able to connect to the controller with an OPC-UA client, and I’m able to browse the tags, so far so good. Therefore I’m assuming that the OPC-UA server is running on the controller. But now the strange part, in the device security settings I have set the communication Policy to BASCI256SHA256 ( I also have tried the other ones) and the communication mode is set to secure if possible (I also have tried all the other ones) (see picture). With these settings I would assume that I would only be able to login with a Basic256SHA256 policy with a client. But the opposite is true, I am able to login using the no policy mode and when I set it to Basic256SHA256 the client (UA-Expert) notes that this policy is not available on the server. I then check the certificates and I noted that there is no certificate for the OPC-UA server, I tried to generate one but it gave the error that the certificate has not been created by the device (See picture). To summarize I have no clue what is going on, and the controller does the opposite of what I would expect. Codesys Ethernet V3 driver I have a HMI connected to the same controller using the Ethernet V3 driver. But this will not connect. I tried all the Protocols (see picture), with and without the username and password enabled. But it will not connect, when I scan the available servers I can see the controller with the port number that I am expecting, so I’m assuming that the Codesys V3 ethernet driver is up on the controller. Does anyone can give me some direction, because the stuff that I tried doesn’t make sense to me. Thank you in advance
Last updated: 2024-04-02

Post by bertus on Can't get SMC_SmoothPath to work ^{CODESYS Forge talk (Post)}
Hello all, I am trying to run a XY trajectory from a static G-Code file. Everything works except the smoothing/blending of the corners. My setup: Codesys v3.5sp18 Raspberry Pi 4 CODESYS Control for Raspberry Pi SL, using demo license. Zero axes (only using the interpolator). The order of processing for my decoding is: SMC_NCDecoder (ok) SMC_SmoothMerge (ok) SMC_SmoothPath (not ok) SMC_LimitDynamics SMC_CheckVelocities I created following instances and buffers: fbNCDecoder: SMC_NCDecoder; fbSmoothMerge: SMC_SmoothMerge; fbSmoothPath: SMC_SmoothPath; fbLimitDynamics: SMC_LimitDynamics; fbCheckVelocities: SMC_CheckVelocities; aNCDecoderBuffer: ARRAY[0..49] OF SMC_GeoInfo; // buffer stage 1 (fbNCDecoder) aSmoothMergeBuffer: ARRAY[0..19] OF SMC_GeoInfo; // buffer stage 2 (fbSmoothMerge) aSmoothPathBuffer: ARRAY[0..99] OF SMC_GeoInfo; // buffer stage 3 (fbSmoothPath) aLimitDynamicsBuffer: ARRAY[0..39] OF SMC_GeoInfo; // buffer stage 4 (fbLimitDynamics) My original G-Code file has a lot of short G1 elements but this example, I reduced it to a simple square: N000 G51 D10 N010 G38 O1 N020 G00 X0 Y0 F50 E1000 E-1000 N030 G01 X0 Y-37.5 N040 G01 X-75 Y-37.5 N050 G01 X-75 Y37.5 N060 G01 X0 Y37.5 N070 G01 X0 Y0 N080 G50 N090 G39 O1 In the Codesys CNC settings, I have these instances activated: SMC_SmoothMerge SMC_SmoothPath SMC_LimitDynamics SMC_CheckVelocities And with those settings (and the path-preprocessing button actived), the G-Code viewer shows the square with nicely blended corners (see attached picture). However, when running it on the PLC, it doesn't blend the corners at all. Below the relevant part of my code. The process is started with bDecode. // stage 1: decoding G-code fbNCDecoder( ncprog := square, bExecute:= bDecode, bAbort:= NOT bDecode, nSizeOutQueue := SIZEOF(aNCDecoderBuffer), pbyBufferOutQueue := ADR(aNCDecoderBuffer) ); // stage 2: merge short linear segments fbSmoothMerge( bExecute := bDecode, poqDataIn := fbNCDecoder.poqDataOut, nSizeOutQueue := SIZEOF(aSmoothMergeBuffer), pbyBufferOutQueue := ADR(aSmoothMergeBuffer), piMaxDifference := PI_MAX_DIFFERENCE, usiMaxDegree := 5, wFeatureFlag := 1, wAdditionalParamNumber := 0, dMinimumCurvatureRadius := D_MIN_CURVATURE_RADIUS ); // stage 3: smooth corners fbSmoothPath( bExecute := bDecode, bAbort := NOT bDecode, poqDataIn := fbSmoothMerge.poqDataOut, eMode := SMC_SMOOTHPATHMODE.SP_SPLINE5_MIN_CURVATURE, eAddAxMode := SMC_SMOOTHPATHADDAXMODE.SPAA_NONE, nSizeOutQueue := SIZEOF(aSmoothPathBuffer), pbyBufferOutQueue := ADR(aSmoothPathBuffer), dAngleTol := D_ANGLE_TOL, bSymmetricalDistances := TRUE, bImprovedSymmetricCuts := TRUE ); // stage 4: keep acc/dec and velocity within limits fbLimitDynamics( bExecute := bDecode, bAbort := NOT bDecode, poqDataIn := fbSmoothPath.poqDataOut, wAxis := 16#07, nSizeOutQueue := SIZEOF(aLimitDynamicsBuffer), pbyBufferOutQueue := ADR(aLimitDynamicsBuffer), bIncludePathSettings := TRUE, dMaxVel := 2500, dMaxAccDec := 10000 ); // stage 5: check the path speed fbCheckVelocities( bExecute := bDecode, bAbort := NOT bDecode, poqDataIn := fbLimitDynamics.poqDataOut, dAngleTol := D_ANGLE_TOL); pathQueue := fbCheckVelocities.poqDataOut; // repeat until MaxDuration ... Any idea what I'm doing wrong? Is smooth path supposed to work at all when using a demo license? Thanks.
Last updated: 2025-12-17

Post by martinlithlith on Relay board / relays for raspberry pi 3 b+ ^{CODESYS Forge talk (Post)}
hi! im planning a project on a raspberry with Codesys. For this I'll need a number of relays to control heating and fans, all a max of 24v and about 2a. How would i know if the board / relays i buy will be working with Codesys? Does every hat work or does it need a library/driver? is there a list of drivers/libraries created? as this is a hobby project all tips on a relay board or single boards that works with codesys and not to expensive are very welcome.
Last updated: 2023-09-03

Post by ofey on Device parameter - ‘ModbusTCP Configuration’ ^{CODESYS Forge talk (Post)}
Hi! Do anybody know how I can add and enable the parameter 'Default Modbus TCP slave' on a device? I am currently writing a program where the PLC shall be set up as a Modbus TCP client, but I dont know how to add parameters to devices in codesys. I'm pretty new to the codesys environment. The picture in the attachment is on a similar PLC project where I have not written the code. my goal is to add this parameter in another project.
Last updated: 2023-10-04

Post by sukrit on What licenses are required for runtime on raspberry pi cm4 ^{CODESYS Forge talk (Post)}
We have developed a project for 2 servo motors using raspberry pi computemodule 4 on ethercat master. we are using web visualization for display different screens. project is running well in demo. we want to implement it in production envoirment. being new still wondering which licences i need. Can We get this information in codesys devlopment software. code size is approx 5 mb, 1 instance of etharcat master and aproox 100 variables in visaualization.
Last updated: 2023-10-17

Post by tehthoams on Find Function: Object reference not set to an instance of an object. ^{CODESYS Forge talk (Post)}
Hey, Sorry this isn't super helpful, but i had this problem once and was able to resolve it. I can't recall how I solved it and whether it was a problem with my codesys installation or the project itself. If it is the codesys installation, make sure all your required libraries and plugins are installed and available. compare with a colleagues installation if possible. I vaguely recall saving a copy of my project and deleting things one by one until the error went away...
Last updated: 2023-10-30

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