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

Post by kporter on Removing <Empty> node in Device Tree ^{CODESYS Forge talk (Post)}
I initially created a SoftMotion axis for my EtherCAT CoE drive. I wanted to change it to use SoftMotionLight so I deleted the SM node, which left an <empty> node. I created the SML device, but the <empty> node remains. How can I remove that from the tree? </empty></empty>
Last updated: 2025-09-06

Post by gseidel on The default ramp type selection in SoftMotion V4.18.0.0 is Quadratic ^{CODESYS Forge talk (Post)}
Hi imdatatas, thanks for your feedback. This change was intentional, as the quadratic ramp type has many advantages over the trapez ramptype. Sorry to hear it causes problems in your situation. Can you please shortly explain the nature of the problems? Best regards, Georg
Last updated: 2025-09-08

Post by pernockham on Gateway in China - "Gateway not connected" ^{CODESYS Forge talk (Post)}
Gateway and runtime (Control for linux SL) on a debian linux. Thanks for your check. Good to know. I will probably travel there in about a months time so that will give me better possibility for further testing. (on a side note, I dont get mail-updates on forum-subscriptions, need to check the topics manually)
Last updated: 2025-09-26

Post by snhatton on How to write a for loop in ladder? ^{CODESYS Forge talk (Post)}
Hi there, little late to the party, but you could also use the ST block for in-line ST code and implement a for loop as you normally would. ST Block is super handy if you just need a small amount of in-line structured text code without creating a new POU. Hope this helps!
Last updated: 2025-10-06

Post by open on How to create a stopwatch? ^{CODESYS Forge talk (Post)}
Hi @ph0010421 and @Ton, Is it possible to program a stopwatch to measure a system running time when it is turn on, and pause when the system is turn off. I tried your examples when stopped, the elapsed time will then be calculated, but i need the time to be continuously counting. Warmest regards,
Last updated: 2023-12-11

Post by nz-dave on Bool turning on in case stament in wrong state? ^{CODESYS Forge talk (Post)}
pretty sure its not. ive done a cross reference and only have one write that sets it to true. Only way i can stop it is to remove the function block call from the main pou that is running said case. its got me stumped:/
Last updated: 2023-12-16

Post by user0815 on Web Socket Client SL -Bibliothek Fehler ^{CODESYS Forge talk (Post)}
Es sind keine exceptions im Log. Ein warning (no runtime license - running in demo mode(~2 hours) und der eine Fehler. Also bevor ich probiere was zusenden. Nach dem senden kommen zwei Ausnahmen dazu. Das Bild mit den Ausnahmen packe ich mal oben zu den anderen
Last updated: 2023-12-19

Post by svn123 on In Simulation Mode, logic is not executing ^{CODESYS Forge talk (Post)}
I stopped the simulation and tried to rebuild. "Cloned Task0.task0. Priority already in use" error was shown after rebuilding. I used Build-Clean All option and rebuilt again. Now the logic started working. But I am not still sure what caused the error in first place. If somebody knows about this error, please enlighten me. Thanks svn
Last updated: 2023-12-25

Post by dhumphries on Execution Order of Function Blocks ^{CODESYS Forge talk (Post)}
Function blocks in a SFC are executed left to right, top to bottom, instructions in ST are executed from left to right top to bottom as well. I think you are asking about the execution of POUs although you use the name function block, I believe POUs are executed in the order they are shown under the main task.
Last updated: 2023-12-28

Post by dhumphries on IO link on IFM AL133x only single digital input on a channel ^{CODESYS Forge talk (Post)}
Try changing the port mode to digital input for each port you want to have 2 inputs in the connection settings for the device. I've successfully used ports for inputs on an AL1920 this way, I think the procedure should be the same for an AL1332.
Last updated: 2023-12-30

Post by martinlithlith on Raspberry Pi: List of available drivers / libraries ^{CODESYS Forge talk (Post)}
Hi! I'm still on the hunt for drivers for example TCA9548 and a list or somewhere where all devices for raspberry is gathered. as this post is quite old I'm hoping/gussing that there is somewhere where work after 2021 is gathered? Or has the raspberry part if the community slowed down on creating device drivers?
Last updated: 2023-12-31

Post by patrick on Version 3.5.19.40 probleme bei FUN mit _to_ im Name ^{CODESYS Forge talk (Post)}
Ich bin leider auch über den Fehler gestolpert, aber selbst in Version 3.5.19.50 ist dieser noch enthalten. Bis 3.5.19.20 kann ich meine Programme noch nutzen. Ab 3.5.19.30 ist der Fehler anscheinend vorhanden. Ich habe leider auch schon einen Haufen Programme mit meiner Library erstellt, somit wäre ein umbenennen nur mit sehr viel aufwand möglich.
Last updated: 2024-01-02

Post by anderson on function block output ^{CODESYS Forge talk (Post)}
so it is not possible for me to use the function blocks and through them I can select the digital outputs of the PLC so that pulses and direction are output, or some function block that does this reading and in it I can program the pulse and direction outputs for the drive?
Last updated: 2024-01-09

Post by timvh on Sysfile inuts ^{CODESYS Forge talk (Post)}
To prevent ambiguous use of this enumeration value. Let's say another ENUM is available in your project or in another library which has an enumeration value AM_WRITE, then it is not clear which AM_WRITE you want to assign. By this qualified access to the SysFile.AM_WRITE, it is completely clear for the compiler.
Last updated: 2024-01-14

Post by smartcoco on Add visual background FB blocks. ^{CODESYS Forge talk (Post)}
Can you add a background FB block to the visualization page, and loop through this FB block when the page is in display mode. This FB block requires two more functions, one for executing when the page is displayed and the other for executing when the page is closed.
Last updated: 2024-01-16

Post by scarter on Import/Export PLCOpen xml Task Configuration ^{CODESYS Forge talk (Post)}
I'm Having the same issue. If I highlight PLC Logic and import it erases everything else and replaces the Task config. If I highlight the Application I get the same result. Simple manual fix is click and drag the task config onto the origional Application, and delete the second one. Easy fix but not the expected result of importing task config.
Last updated: 2024-01-17

Post by aniket-b on How to protect library project? ^{CODESYS Forge talk (Post)}
I have library projects which has few function blocks. I have assigned security to each FB. I want to protect them and user can only be able to use it without viewing the code inside. What kind of file I should send to user? Is it compiled library file?
Last updated: 2024-01-22

Post by eschwellinger on New Ladder Diagram conversion does not work due to missing features ^{CODESYS Forge talk (Post)}
The "remove unused" parameters have been added to 1.0 version as well as the "manual" removal of pins... also allowed "empty" inputs for blocks is in and the compile error described there should no longer occurs. Drag drop of variables is not yet implemented and I don't think the double-click feature yet either.
Last updated: 2024-01-29

Post by thomas-moba on "sudo"-Befehle über die Funktion "SysProcessExecuteCommand2" ^{CODESYS Forge talk (Post)}
Wir haben jetzt so ziemlich alles probiert. Ohne sudo mit sudo, den Aufruf in ein Script gepackt (.sh und .py) und sogar ein eigenes kleines Linux-Programm geschrieben, weil wir vermuteten das der sudo-Befehl nicht im Klartext ausgeführt werden darf. Es funktioniert einfach nicht. Daher dir Frage: muss die codesyscontrol als root ausgeführt werden? Momentan wird sie als user ausgeführt.
Last updated: 2024-02-02

Post by nano on Modbus TCP/IP slave communication errow ^{CODESYS Forge talk (Post)}
please tell us the exact error message from diagnostic. U can view it at devicetree in the node-element diagnostic from modbus-configuration. u also can activate the function auto-reconnect in master and increase a little bit the timeout and the repetition to male thw communication a little bit more robust
Last updated: 2024-02-04

Post by nima-khajehali on Data Transferring between 2 PLCs in a same PC ^{CODESYS Forge talk (Post)}
Hi Guys, I want to simulate the data exchange between 2 soft PLCs on the same PC. We are trying to simulate the process and we could not see the desired result. What should I do to pass all data between these 2 PLC's correctly ? Please see attached
Last updated: 2024-02-05

Post by davidbo on Is it possible in the log to see previous shutdown ^{CODESYS Forge talk (Post)}
If my application does some kind of violation which makes it cast an exception it will trigger my real watchdog which results in a reboot. Unfortunately the log it seems only shows the boot sequence. Is it possible to see what happen before reboot?
Last updated: 2024-02-08

Post by ferrim on IEC 61499 ^{CODESYS Forge talk (Post)}
Hello otdeveloper, I am very interested in this topic. I have been dedicated to IEC 61499 for some time and I would like to understand if the time has come to adopt it in the real world of automation or if it will continue to fill up research papers only.
Last updated: 2024-02-09

Post by kleeswi on Lizenz Reinstallieren ^{CODESYS Forge talk (Post)}
Seit dem Update auf die Version V3.5 SP19 Patch 5 von der Version V3.5 SP17 haben wir das folgende Problem. Wir möchten von einem Gerät die Lizenz speichern. Damit wir nach einem neuen Raspberry Pi image die gleiche Lizenz für dieses Gerät brauchen können. Die Lizenz ist Geräte spezifisch so viel ich weiss. Bei unseren Geräten bei den Kunden hat es nicht immer eine Internetverbindung.
Last updated: 2024-02-19

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