Post by akneer on HMI über Webbrowser ^{CODESYS Forge talk (Post)}
Beispiel: IF bShutdownPC THEN bShutdownPC := FALSE; // LINUX SysProcess_Implementation.SysProcessExecuteCommand( pszComand:='shutdown -h 0', pResult := ADR(udiError)); // WINDOWS SysProcess_Implementation.SysProcessExecuteCommand( pszComand:='shutdown.exe -s -t 05', pResult := ADR(udiError)); END_IF
Last updated: 2026-03-04

Post by fpawlak on How to register own component - CMAddComponent() or CMAddComponent2() ^{CODESYS Forge talk (Post)}
Hi, so really oneone has no idea which way is correct one? Or maybe both are okey if they work for me?
Last updated: 2026-03-13

Post by pernockham on Gateway in China - "Gateway not connected" ^{CODESYS Forge talk (Post)}
Finally sorted (unit in China). The problem was related to dns-setting of the gateway/host. Connection (also inside china) tested/works.
Last updated: 2026-03-18

Post by thomasrek31 on Textfield display problem ^{CODESYS Forge talk (Post)}
Hello, have you found a solution? It seems I have the same problem as you. I can't remove the overlay, otherwise certain functions stop working.
Last updated: 2026-03-23

Post by thomasrek31 on Textfield display problem ^{CODESYS Forge talk (Post)}
Hello, have you found a solution? It seems I have the same problem as you. I can't remove the overlay, otherwise certain functions stop working
Last updated: 2026-03-23

Post by ulvis on CAA 3.5.16 TLS configuration - certificate ^{CODESYS Forge talk (Post)}
Hi, did yo have any luck with this? I am facing the same challenge. Using a WinCTRLx64 but I get AccessViolation error in my CmpTlsCreateContext() call.
Last updated: 2026-03-23

Post by lukasz on Unresolved reference when trying to upload to Codesys Runtime V3 ^{CODESYS Forge talk (Post)}
Hello! I'm working with Codesys SP21 Patch 4. The project builds without any errors. When trying to upload my project to Codesys Runtime V3 x64 I get a lot of Unresolved Reference errors, all with FU- at the start and then -CLOSELAYER2, -GETBUSINFO, -GETFRAME etc. I also get a error pop-up that I should 'update device' in the project but it's not specified to which version or anything useful really.There's also not much to choose from. When I check Runtime version in the systray I get 3.5.21.40 and it's the same as I have set up in the project as the device. All information I get is that it should be clear from the errors but no useful information is provided in the errors. Do I need to install some library? I checked other posts and for different reference error and this was the answer. Thanks in advance!
Last updated: 2026-03-25

Post by nulltrace on How change Unity-ID in TCP Modbus Slave ^{CODESYS Forge talk (Post)}
Hey Husarz, thanks for your Message, now i understand your Problem, also able to reproduce that. Pls. give me a Short Time to Check some stuff on this, i'll come back to this Topic with news ASAP. Greetings
Last updated: 2026-04-03

Post by struland on Sysfile Konfiguration ^{CODESYS Forge talk (Post)}
Bei mir half: [SysFile] IecFilePath=/mnt/sdcard Allerdings ist es kein Raspi. Den Ordner, der gelesen werden soll mal auf korrekte Zugriffsrechte prüfen. Im Falle das SELinux aktiv ist mit ls -lZ, ansonsten ls -al
Last updated: 2026-04-13

Post by struland on Sysfile Konfiguration ^{CODESYS Forge talk (Post)}
Bei mir half: [SysFile] IecFilePath=/mnt/sdcard Allerdings ist es kein Raspi. Den Ordner, der gelesen werden soll mal auf korrekte Zugriffsrechte prüfen. Im Falle das SELinux aktiv ist mit ls -lZ, ansonsten ls -al
Last updated: 2026-04-13

Post by nulltrace on How change Unity-ID in TCP Modbus Slave ^{CODESYS Forge talk (Post)}
Hey, I also waiting for feedback from Mr. Schwellinger @eschwellinger, please send me an answer, i would appreciate it. The clue is, i know the solution, but have to check if it's allowed to share.
Last updated: 2026-04-14

Post by reinier-geers on Resize and position Numpad/Keypad ^{CODESYS Forge talk (Post)}
HI, I download the scale dialog. But cant find were i can Set the size of the dialogs. only the position. I want the diolog bigger
Last updated: 2026-04-15

Post by husarz17 on How change Unity-ID in TCP Modbus Slave ^{CODESYS Forge talk (Post)}
Good to know there's a solution to this problem. I hope you'll be able to share it with me. I can't wait to hear about it.
Last updated: 2026-04-20

Post by malie on Issue with library updates ^{CODESYS Forge talk (Post)}
Hello, i got the same problem, but on my site it started with version 3.5.21, with version 3.5.19.7 it worked like a charm. How get the old behavior back? Or how to reload the librarys in an open project/library manually?
Last updated: 2026-04-24

Post by reinier-geers on Network variable stops sending ^{CODESYS Forge talk (Post)}
What version. 20.5 ? ive got also problems wiyth that version. Online change, it hangs itself after one hour. Then one project can problems. Ive change display with 21.0 . At home i turned on the 20.5 display. After 1 hour i goes to stop.
Last updated: 2026-05-06

Post by alex-n on Problem with keeping up the distance between two axes ^{CODESYS Forge talk (Post)}
We use Inovance AC802 as PLC, IS810N Drive, library 4.10, connection via Ethercat and no any suprise at work.
Last updated: 2026-06-02

Whether You’re New to Nursing or a Seasoned Pro, Grasping the Basics of NURS FPX 4055 Assessment 1 Offers Many Benefits ^{CODESYS Forge talk (Thread)}
Whether You’re New to Nursing or a Seasoned Pro, Grasping the Basics of NURS FPX 4055 Assessment 1 Offers Many Benefits
Last updated: 2026-06-13

Post by eschwellinger on Linux ARM64 Deploy Fail - Index out of range ^{CODESYS Forge talk (Post)}
Which Deploy Tool version is installed? the ssh login does work? If yes could we get a screenshot of the device information see my example:
Last updated: 2026-07-01

Post by arj3090 on Linux ARM64 Deploy Fail - Index out of range ^{CODESYS Forge talk (Post)}
I used Tools->Deploy Control SL in the IDE that I downloaded yesterday. So I assume it is the latest version. I did a manual install using SSH and it works.
Last updated: 2026-07-01

Post by patrik on Wish: CODESYSControl.cfg - again ^{CODESYS Forge talk (Post)}
Really good post. I hope that it gets seen by CoDeSys staff. I often find the documentation lacking when it comes to using CoDeSys in more complex ways. If using standard "basic PLC functionality", then it's fine and functions are documented in a sufficient way. Once you go outside of that bubble then I find the documentation not enough. CODESYSControl.cfg is a good example of this. And why isn't more of this integrated in the IDE. like changing port of the webserver. Why is it hidden in this file and not accessible through the IDE. It feels like a layer of complexity purposely left in so you don't change it if you don't know what you are doing. Like the argument is if you have the know-how to find the file you have the know-how to edit it. I find the documentation lacking when it comes to more complex libraries too. Like the element collections library. there is parameters I still don't quite know what they do. I can't find any documentation about them. There is an example project to download from CoDeSys so you can see how you are supposed to set your factories up. I leave some parameters like it is in the example. Should I? I don't know. Does it work. Yes. But I could perhaps create memory leaks if I get something wrong and I don't see that until way later. In the create method of your element factory you have a function called __vfinit and you just have to accept that it works. Why can't I get insight in what it does through documentation? Don't CoDeSys want us to know how these work so we can't use them to accidentally break something? I find the error logging lacking too. I've had the CoDeSys service crash but it doesn't say why. I've seen windows noticing the crash but no error code was sent or error message. Also in my current issue where the application fails to start after power outage. I can see in the log that it fails to load retain in the application as one log entry and application failing to start as another. But why? Why does loading the retain fail? give me more information! Is it just a skill issue with me? I don't know. If it is then I'd still want CoDeSys to step up their game when it comes to documentation. I'm sorry if a lot of frustration comes though in this post. I really like the product and what I can do with it compared to other PLC brands.
Last updated: 2024-11-21

Post by steven-schalm on Github Actions CI/CD tasks - development topic ^{CODESYS Forge talk (Post)}
hello kevinrn, I've been looking for a solution to the CI/CD issue for a long time. Briefly about me... I am 32 and software architect for Codesys V3 and fullstack dev for web (VueJS, NestJS) in a small company in Erfurt (Germany). https://www.rex-at.de/. Through my web part, we already have CI/CD running well via GitLab (YAML-based configuration file (.gitlab-ci.yml), which defines which pipelines and jobs are executed when certain events occur) with everything you know. Stages for npm packages - prepare (GitVersion, npm install or whatever) - build (vite, tsc or whatever) - testing (vitest, jest or whatever) - deploy (npm packages) And similar for monorepo's or backend services (in NestJS) as DockerImages. For Codesys we have been building an OOP framework for years (~50 libraries now), which is currently managed via SVN and a specially written Svn-Watcher (in Python) gets commits and runs and builds everything together and deploys it to an FTP server and network drive. Why do we still have SVN? Because we are unfortunately still tied to the safety integration of Codesys and can therefore only go to SP15 at most with our controller/Eckelmann. But soon there will be an update and there will be no more obstacles to using Git. Hence my questions: 1. the basic idea is to run a local Windows Runner on some machine? 2. install Codesys on the machine where the runner is running? 3. powershell & python scripts are then used to execute builds (compile, build, sign libraries) & deploys? 4. can the Github action also be used in GitLab? ChatGPT has already told me that it's not the same, but it doesn't hurt to ask. Do you have any ideas on this? Greetings :D
Last updated: 2024-08-20

Post by fmon on Modbus : dis- / re-connect cable: modbus does not re-start ^{CODESYS Forge talk (Post)}
Hello, I am using codesys Modbus TCP client (4.4.0.0) to communicate with a python modbus server (package pyModbusTCP). I first start my python server on the distant machine. After a fresh codesys compilation, a plc connection/transfer and a PLC run, the modbus connection is OK. Every time in this context the connection is created correctly. When I shut down the server, the modbus connection falls, that is normal. When I restart the python server, impossible to recreate the modbus connexion. With the client autoreconnection, I see on my server that the client tries to connect but unsuccesfully. I have the following message : DEBUG:pyModbusTCP.server:accept new connection from ClientInfo(address='192.168.1.20', port=33476) DEBUG:pyModbusTCP.server:Exception during request handling: NetworkError('recv return null') I tried to stop the codesys client and to restart it with these commands : Modbus_TCP_Client.xStop := True; // Or False Modbus_TCP_Client.Enable := True; // Or False Modbus_TCP_Server.Enable := True; // Or False I tried to confirm the error manually to force reconnection with: Modbus_TCP_Server_Motors.xConfirmError := TRUE; I tried also this command to STOP/RESET/START client and server (codesys side) but nothing happens : status_client := Modbus_TCP_Client.SetCommunicationState(eRequestedState := DED.DEVICE_TRANSITION_STATE.STOP); // .RESET & .START The answer of this function when executed is "status_client = NOT_SUPPORTED" It seems that is a socket problem, but I do not understand if it is on the client or server side. I tried a modbus simulator called "ananas.exe" and the result is the same. Impossible to get a modbus reconnection. What is different at the first connection and at a reconnection attempt ? Thanks for your help
Last updated: 2025-03-14

Post by gilad on CODESYS SoftMotion Generic DSP402 on WAGO PFC200 + Festo CMMT-AS: MC_Power stays Busy, Controlword remains 0 ^{CODESYS Forge talk (Post)}
Hello, I am trying to connect a Festo CMMT-AS-C4-3A-MP-S1 servo drive to a WAGO PFC200 (750-8210) using EtherCAT and CODESYS SoftMotion. Hardware PLC: WAGO PFC200 750-8210 Drive: Festo CMMT-AS-C4-3A-MP-S1 Communication: EtherCAT CODESYS version: Device description version 6.3.1.1 Drive firmware: 36.10.3 Current Status EtherCAT communication is working correctly: EtherCAT master = Running Drive detected and operational PDO input and output mapping is active Statusword, position and velocity are updating correctly Current PDO mapping: Outputs: 6040 Controlword -> %QW0 6060 Modes of operation -> %QB2 607A Target position -> %QD1 60FF Target velocity -> %QD3 Inputs: 6041 Statusword -> %IW2 6061 Modes of operation display -> %IB6 6064 Position actual value -> %ID2 606C Velocity actual value -> %ID3 SoftMotion Axis I added a SoftMotion CiA402 axis under the EtherCAT slave: Axis type: SM_Drive_GenericDSP402 Axis communication state: operational (100) No SoftMotion mapping errors anymore Problem MC_Power is executed with: Enable = TRUE bRegulatorOn = TRUE bDriveStart = TRUE but: Status = FALSE Busy = TRUE Error = FALSE ErrorID = SMC_NO_ERROR The axis remains in: SMC_AXIS_STATE.power_off DSP402 state = SWITCH_ON_DISABLED The most important observation: Statusword = 32784 (0x8010) Controlword (%QW0) remains 0 all the time SoftMotion never writes 6, 7, or 15 to the Controlword. Additional Information The axis status page reports: "The license is missing or invalid. The PLC runs in demo mode." I am not sure whether: The missing SoftMotion license prevents Controlword generation completely. The axis is still not correctly connected to the EtherCAT slave despite operational communication. There is an additional CiA402 configuration step required for the Festo CMMT-AS drive. Has anyone successfully used a Festo CMMT-AS MP drive with CODESYS SoftMotion Generic DSP402 on a WAGO PFC200? Any suggestions on what should be checked next would be greatly appreciated.
Last updated: 2026-06-24

Post by kevinl on Weidmüller und u-OS bugs ^{CODESYS Forge talk (Post)}
Hallo zusammen Wir setzen mehrere Weidmüller UC20-WL2000 mit CODESYS Runtime und System-Bus ein und kämpfen seit einiger Zeit mit Problemen, für die wir bisher keine Ursache finden konnten. Aktuell beobachten wir zwei Phänomene: System-Bus Probleme Bei einer Anlage verlieren die I/O-Module sporadisch die Verbindung. Im Log erscheinen Meldungen wie: SLIO:CheckModule missing NotReachable Module Unplugged Nach diversen Updates (u-OS 2.7, aktuelle Runtime, aktuelles CODESYS) wurde das Verhalten eher schlechter statt besser. Anfangs traten die Fehler sporadisch auf, inzwischen funktioniert der System-Bus teilweise gar nicht mehr. Auch ein Downgrade auf eine ältere u-OS Version half nicht wirklich, aber ev ist es mit der aktuellen Runtime nicht kompatibel. Probleme nach Spannungsunterbruch / Neustart Mehrfach hatten wir bereits den Fall, dass eine Steuerung nach einem Spannungsunterbruch oder Neustart nicht mehr vollständig hochkommt. Teilweise startet die CODESYS Runtime nicht mehr (vermutlich aufgrund von Problemen mit Persistent-Daten), in einem aktuellen Fall ist zusätzlich das u-OS Backend nicht mehr erreichbar. Die Welcome-Seite erscheint noch, beim Login läuft der Request jedoch in einen 504 Gateway Timeout. Hardware: UC20-WL2000 u-OS 2.x System-Bus mit mehreren UR20 Modulen CODESYS Control SL Runtime Mich würde interessieren: Hat jemand ähnliche Erfahrungen mit UC20-WL2000 oder u-OS gemacht? Gibt es bekannte Probleme mit dem System-Bus? Gibt es Workarounds bezüglich Persistent-Daten oder Recovery nach Spannungsunterbruch? Hat jemand ähnliche 504-Fehler im u-OS Backend gesehen? Vielen Dank für jeden Hinweis.
Last updated: 2026-06-05

Post by dantheman on Connecting to SoftPLC Only Works By Turning Off Modbus Ethernet Port ^{CODESYS Forge talk (Post)}
I have an IPC with 2 ethernet ports and 1 Wi-Fi. I'm using ModbusTCP with the ethernet port named "enp2s0" connected to my remote I/O. This works fine when testing with Python and also works with CODESYS, but CODESYS is only able to scan for the Linux SoftPLC when I turn off the "enp2s0" interface. In other words, I can't get online with the IDE if I want my ModbusTCP comms to run with CODESYS. I'm using a Linux SoftPLC that has the following entry in CODESYSControl.cfg, hoping that this will allow me to connect with "enp1s0" or "wlp3s0", and leave "enp2s0" for field comms, but this seems to only make the source IP of the ModbusTCP comms to be bound to "enp2s0". That last point is the case only if I don't restart the service, but if I do restart the service after changing the config file, the source IP for the ModbusTCP comms then becomes the one for "enp1s0", which is very confusing to me: [SysSocket] Adapter.0.Name="enp2s0" Adapter.0.EnableSetIpAndMask=1 On the device list, I only have "enp2s0" given as the ethernet device that has the ModbusTCP master & slave beneath it, shown in Screenshot 1. On the IPC, I can ping the ModbusTCP client (remote I/O) from "enp2s0", and I've attached a Wireshark capture of running ModbusTCP from the CODESYS runtime as Screenshot 2, 3 & 4 (again, I can't get online when this is running, I have to turn off "enp2s0" to connect even when it's idle and I don't have an active TCP session with my Python tests). Like I explained above, the source IP is "enp1s0", even though the ethernet device on the project is "enp2s0". I was lucky to catch the red message that showed the source IP that makes sense to me (the one for "enp2s0"), but for some reason that connection was reset and I never saw that packet again. I've also tried this with Auto-reconnect both enabled & disabled, for the ModbusTCP Master device. I also have to turn off "enp1s0" and then turn it on, just so that I can have the ModbusTCP comms running from "enp2s0" (which is not intuitive in any way to me, I'd love some help understanding that phenomenon as well) in the weird manner that I've described above. I would be very appreciative if someone can help me figure out this pickle. I'd love to just connect to CODESYS through my Wi-Fi interface and leave my ethernet ports for field comms.
Last updated: 2024-08-01

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