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 mohammedben on Fail communication between CODESYS and Fuxa SCADA via OPC UA ^{CODESYS Forge talk (Post)}
hi, When I try to establish communication between CODESYS and Fuxa SCADA via OPC UA, the connection fails, and I receive the following error: 2026-02-15T08:38:13.618Z [ERR] 'codesys' connect failure! Error: The connection may have been rejected by server, Err = (ClientTCP_transport6: socket has been disconnected by third party) 2026-02-15T08:38:13.619Z [ERR] 'codesys' try to connect error! Error: The connection may have been rejected by server, Err = (ClientTCP_transport6: socket has been disconnected by third party) 2026-02-15T08:38:13.622Z [ERR] 'codesys' connect error! undefined (1) Note that there are no problems when I establish communication with the UaExpert and OPC UA Client Simulator software. I also previously tried communicating with RapidSCADA and received the following error: Endpoint with the specified security options not found. And when I try to connect with "none" in the security policy, I get this error: BadSecureChannelClosed I have tried almost all the solutions available online and have not found a solution. I hope you can provide me with a solution that solves this problem. Thanks in advance
Last updated: 2026-02-16

Post by superjojo2002 on Licensing info not available. ^{CODESYS Forge talk (Post)}
I updated the docker container runtime to version 4.11.0.0. and build the container with this "Dockerfile" FROM arm64v8/debian:11.6 RUN apt-get update RUN apt-get install -y wget sudo unzip libusb-1.0-0-dev procps ENV CDS_VERSION "4.11.0.0" ENV EDGE_VERSION "4.11.0.0" ENV URL "https://store-archive.codesys.com/ftp_download/3S/LinuxARM64/2302000039/$CDS_VERSION/CODESYS%20Control%20for%20Linux%20ARM64%20SL%20$CDS_VERSION.package" ENV EDGE_URL "https://store-archive.codesys.com/ftp_download/3S/EdgeGatewayLinux/000120/$EDGE_VERSION/CODESYS%20Edge%20Gateway%20for%20Linux%20$EDGE_VERSION.package" RUN wget --output-document=/tmp/codesys.package $URL && \ unzip -p /tmp/codesys.package '*codemeter*.deb' > /tmp/codemeter.deb && dpkg -i /tmp/codemeter.deb && \ unzip -p /tmp/codesys.package '*codesyscontrol*.deb' > /tmp/codesys.deb && dpkg -i /tmp/codesys.deb RUN wget --output-document=/tmp/edge.package $EDGE_URL && \ unzip -p /tmp/edge.package '*arm64.deb' > /tmp/edge.deb && dpkg -i /tmp/edge.deb EXPOSE 11740 1217 11743 ENTRYPOINT ["/bin/sh", "-c" , "/etc/init.d/codemeter start && /etc/init.d/codemeter-webadmin start && /etc/init.d/codesyscontrol start && /etc/init.d/codesysedge start && tail -f /dev/null"] Now cmu -x" returns root@sensoredge-field-netfield-produktmanagment:/# cmu -x cmu - CodeMeter Universal Support Tool. Version 8.00 of 2023-Nov-28 (Build 5967) for Linux/ARMHF 64-Bit Copyright (C) 2007-2023 by WIBU-SYSTEMS AG. All rights reserved. But still CODESYS development system reports that it needs a dongle and when I click install that "value cannot be null. Parameter name: containerToLicenses" It seems that Codemeter is forced to look for a dongle instead of a CMsoftcontainer. Can you confirm that CODESYS licensing works also when CODESYS is installed in a Docker container?
Last updated: 2024-03-21

Post by transmin01 on CANbus issue ^{CODESYS Forge talk (Post)}
Update: This initial issue was when using a Linux target PLC. Since then I have created a Win10 target PC and the Codesys software reported an issue associated with the device version (see attached). I am assuming this is an incompatibility with the xml file from the manufacturer and the firmware version on the module and I am chasing this up with Beckhoff. Question is, why would this not report with a Linux target?
Last updated: 2023-09-14

Post by mmoncada on Dinamically loading recipes ^{CODESYS Forge talk (Post)}
I'm having trouble with the initial loading of recipes. I can create them and load one or the other, but when the program restarts the recipes are not listed. I'm calling: RecipeManCommands.ReloadRecipes and then RecipeManCommands.GetRecipeCount which returns 0 recipes. None of the methods returns error and if i call them again after RecipeManCommands.CreateRecipe RecipeManCommands.ReadAndSaveRecipe getRecipeCount returns the number of recipes created. When i restart the system, once again they are not listed even though the recipe files are there. Any ideas? Martin Btw, Codesys 3.5 SP 16 Path 9
Last updated: 2023-12-06

Post by tcarlbom on codesys sp20 opcua not working ^{CODESYS Forge talk (Post)}
hi, anyone else having trouble with opc ua in codesys sp20? i get Error 'BadIdentityTokenInvalid' was returned during ActivateSession i have tried both windows x64 runtime and linux runtime. i have created a completely new codesys project for this. in each of them i have only added the symbol configuration and selected one tag. i have tried several opc ua client, like ua expert, nodejs and python. all return Error 'BadIdentityTokenInvalid' was returned during ActivateSession so the problem must be the opc ua server.
Last updated: 2024-07-03

Post by schweizer on Position und Größe optimal anpassen (Container.Height - Visu.Height) funktioniert nicht. ^{CODESYS Forge talk (Post)}
Hello forum Does anyone have experience with optimally adjusting the position and size of the visualization elements? For us, the adjustment on the x-axis works in Codesys 3.5 SP20 with (Container.Width - Visu.Width). However, the y-axis is not affected with (Container.Height - Visu.Height). We implemented this according to the example from Codesys "Optimally adjust position and size" and had no success. Thank you very much for your help.
Last updated: 2024-07-29

Post by ivanh on kepware minimun privilege ^{CODESYS Forge talk (Post)}
Hello everyone, I’m integrating Codesys with Kepserver using the Kepware driver for Codesys, and I need to configure a user account with the minimum necessary privileges to read and write to the tags on the PLC, without using the internal OPC UA server of Codesys. However, despite not assigning the Modify permission, Kepware still allows writing to the tags. What are the minimum required permissions to ensure that writing is only allowed when necessary, and how can I prevent other permissions from being overridden? Any guidance would be greatly appreciated.
Last updated: 2024-08-12

Post by andrebrandt on FB string and naming ^{CODESYS Forge talk (Post)}
Hi all. I have a FB written in ST. FUNCTION_BLOCK NTC10k VAR_INPUT Syst:STRING; In:REAL; END_VAR VAR_OUTPUT Out:REAL; OTag:STRING; Out_St:Struct_NTC10K; END_VAR VAR Tag:STRING; InstanceName: STRING; Structure:Struct_NTC10K; END_VAR What i'm trying to do, is to pass data to structure. In structure i want to add a tag with systemnumber and sensorname. '320.001-RT401' In pou i use this RT401: NTC10k;, and tried this RT401: NTC10k(Tag:='RT401'); Anyone done this?
Last updated: 2024-09-26

Post by mini-developer on Profinet Exor connection drop ^{CODESYS Forge talk (Post)}
Hello, I have a Exor HMI with 2 seperatred ETH interface's. It is Configured as PN Master on ETH interface 1 and the IO's are working, as long as the development PC is connected to the ETH 0 interface. When the PC is disconnected, the PN communication drops and a reconnection is started. I installed the newest device description for Codesys and Firmware for the Panel. The IO Gateway is from Weidmueller What could cause the Problem?
Last updated: 2024-10-16

Post by vincentger on using ADS1115 ^{CODESYS Forge talk (Post)}
Any reason the ADS1115 wouldnt work with SP20.1 and Runtime 10.0.0.0 on the Raspberry Pi . Using Bullseye or Buster i run into the same issue: Libary and integration works in general as described above BUT i am seeing "bleeding" between the analog inputs . Specifically consecutive ones: So sometimes the raw from AI1 shows on AI2, AI2 on AI3, .. AI4 on AI1. Even with filtering i cant smoothen that out properly and i feel like something is wrong. Almost like the bus is stumbling over itself, or the request from Codesys to the device.
Last updated: 2024-10-28

Post by pernockham on Persistence Manager: Config File not found? ^{CODESYS Forge talk (Post)}
Trying to utilize the persistence manager, but system do not write to file and do not create the config file. System is a Linux SL, version 4.13.0.0 Problems with persistence/config started when I had other problems to go online, I deleted the config file and the persistent files, but the system will not re-create them. I have tried to remove/re-install the "PersistenceManager"-module, create the folder-structure myself. And also reinstall the linux-runtime but its clearly not working. Any help appreciated.
Last updated: 2024-10-31

Post by varshag on Trying to pull Logged In user details and certain other variable values and in turn log to a database ^{CODESYS Forge talk (Post)}
Hello All, I am new to Codesys and am trying to create a simple project which would let me log to a 6 column database table. I can use a push button on Visualization to initiate the logging. Column 1:Timestamp Column 2:Full name or Initials of Logged in operator Column 3,4,5,6: Certain variables Any help is highly appreciated. Thank you.
Last updated: 2024-11-07

Post by garrian on How to write multiple coils (Modbus FC15) ^{CODESYS Forge talk (Post)}
Thanks! As far as I can see, the client can only send words. And on the server side there are an array for each of the functions: bool for coil and discrete, word for holding and input registers. I assume I can use holding register, then use bit mapping on the words instead of coils. But I really want to use the FC15/coils.
Last updated: 2024-11-17

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 dogulas on Removing a symbol from the IEC Symbols Editor grid ^{CODESYS Forge talk (Post)}
In the CODESYS IDE I have several symbols defined and I have IEC Symbol Publishing installed. On the IEC Symbol Publishing window and under the IEC Symbols Editor tab, I have dragged symbols from the tree on the left to the grid on the right. All this works fine. Now I want to remove one of the symbols from the grid on the right and I cannot see any way to do this. How can I remove a symbol from the grid on the right once I've added it?
Last updated: 2025-02-07

Post by stribor on Passing properties as VAR_IN_OUT variables. ^{CODESYS Forge talk (Post)}
I am designing a custom slider object and i ran into a problem when i want to use properties with it. I can update the basic variables if i have a slider variable defined as VAR_IN_OUT, but it does not work with properties. How can i achieve same functionality that some basic objects have (for example basic Slider that comes withing the codesys libraries) such that i can pass both variables and properties to it and they can be modified within the object? I am using Codesys V3.5 SP20 Patch 5.
Last updated: 2025-03-01

Post by nz-dave on ethercat softmotion axis error ^{CODESYS Forge talk (Post)}
Hi all I'm having a little trouble get my axis to work. i can turn them off and on. i can run each servo manually inputting directly to the mapping address. as soon as i try to use any FB's like jog etc my servos wont move and error out. so far I've had error "SMC_ERROR.SMC_DI-POSITIONLAGERROR" and another one about not calling a fb. cheers. in the attachment I have just jogged X_Axis with the MC_JOG FB
Last updated: 2025-03-10

Post by hismoon on Inheritence of struct, ^{CODESYS Forge talk (Post)}
Using a UNION instead of a STRUCT alone should give you that flexibility and only occupy memory once. And if you want to be really elegant, you could use an FB, which only holds PUBLIC VAR. Because a POU can use "EXTENDS"/inheritance. In CODESYS V3, an FB has a lot in common with C++ classes. Using ANY or ALIAS is rarely a good idea. It neither won't be pretty, nor have good readability and requires you to create a lot of error-prone things around it.
Last updated: 2025-03-14

Post by installwhat on Ethercat and profinet on together ^{CODESYS Forge talk (Post)}
I'm curious about the impact of having profinet and Ethercat (specifically softmotion so frame at start of task?) running together. Since it's advised to access the data from the bus task should have both profinet io and ethercat on the same task? Are there any implications around this one should be aware of especially since the frame at task start is just, so far as I'm aware, an ethercat thing? Thanks
Last updated: 2025-04-08

Post by vsgn on Passing properties as VAR_IN_OUT variables. ^{CODESYS Forge talk (Post)}
Hi, in my experience, the best options for such a case could be: 1. Pass a FunctionBlock via VAR_IN_OUT, containing all variables, mehods and properties needed for the logic of this graphic element (be aware of implementing correcly both get and set accessor for properties) 2. Pass an Interface via VAR_INPUT, of which you can use obviously only Properties and Methods. This is much more elegant for me. Here, you can just pass directly the instance of a FunctionBlock implementing such Interface as input. Hope you'll find this suggestions useful.
Last updated: 2025-05-13

Post by janp on IFM Controller Connection Issue ^{CODESYS Forge talk (Post)}
Hi everyone, I’m using an IFM ecomatBasic CR413S controller and having trouble connecting it to CODESYS 3.5. I have CODESYS SP18 installed, as recommended in the manual, and I’ve tried different patches. I’ve also installed all the packages provided on the IFM website for this controller. I can successfully connect to the ecomatBasic template, but I’m unable to connect when using the CR413S-specific template that includes all the inputs and outputs. Has anyone encountered this issue or knows a solution? Best regards, Jan
Last updated: 2025-05-22

Post by janp on IFM Controller Connection Issue ^{CODESYS Forge talk (Post)}
Hi everyone, I’m using an IFM ecomatBasic CR413S controller and having trouble connecting it to CODESYS 3.5. I have CODESYS SP18 installed, as recommended in the manual, and I’ve tried different patches. I’ve also installed all the packages provided on the IFM website for this controller. I can successfully connect to the ecomatBasic template, but I’m unable to connect when using the CR413S-specific template that includes all the inputs and outputs. Has anyone encountered this issue or knows a solution? Best regards, Jan
Last updated: 2025-05-22

Post by eschwellinger on Changed Device of Rapberry Pi to MC SL instead of standard SL and cannot connect anymore ^{CODESYS Forge talk (Post)}
1) https://store.codesys.com/en/codesys-control-for-raspberry-pi-sl.html -> SL: Restrictions The combination of Raspberry Pi and a CODESYS Runtime is for private use, test and teaching purposes. Commercial use is not permitted. 2) you could switch between them by /etc/codesyscontrol/CODESYSControl_User.cfg [CmpRasPi] Architecture=armv7l for MC: armv7l for SC: armv6l for 64Bit: aarch64 or in the Deploytool:
Last updated: 2025-08-06

Post by griinde on display values with frames ^{CODESYS Forge talk (Post)}
i want to make a frame for use multiple places for showing pressure and temperature. ive tried to decleare a variable in the frame config, if i put a fixed value in the value text field it show correct until i simulate. and if i point to a variable i gvl it show the name of the variable, and when i simulate it shows rValue. is there a way to do what i want?
Last updated: 2025-08-16

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