Post by ulad on SPI Communication ^{CODESYS Forge talk (Post)}
Hello. I created a project that uses SPI. This project is working well. I can see with an oscilloscope that the SPI pins are actually changing. But when I resave this project in the IDE and open it later in the system, I see a constant error. What do I need to fix? What am I doing wrong? Thank you.
Last updated: 2023-12-23

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 tvm on Cannot pass array of constant size to a function as a reference ^{CODESYS Forge talk (Post)}
It will be a reference, because it's a VAR_IN_OUT. it's a little weird debugging the array online. It just shows as a POINTER TO INT, and you can't actually see the array from the function side. But you can still work with it as a normal array, not a pointer.
Last updated: 2024-01-09

Post by fcmtw on SDO generation ^{CODESYS Forge talk (Post)}
Hi, When I'm adding a CANOpen device in my WAGO CANOpen Manager, CODESYS automaticaly generates some SDO's that I can't directly disable. From what those SDO's are generated ? I'm not finding anything about it in the EDS files. Also, is there a way to disable the automaticaly generated SDO and execute the manualy created ones ? Regards, Florian
Last updated: 2024-01-23

Post by wiresplus on Connect to remote PLC via local pc and teamviewer ^{CODESYS Forge talk (Post)}
Hello, Depends on the architecture of your PLC. If the PLC is a PC-based item with a normal desktop environment, then you probably can. I find it simpler to install an IIoT Router in the panel, and use an encripted VPN to link to my office PC / Laptop on demand.
Last updated: 2024-01-26

Post by kees-b on Enumeration ^{CODESYS Forge talk (Post)}
Hello, Can anyone give me advice or tell me what I'm doing "wrong"? I use "enumeration", but via, via (maybe that's the problem?) Similar situation in Codesys 2.3 this worked correctly. Now the BOOL is not found in the ENUM. GVL.g_IPC2AMK.dwDO.DO_AMK_REMOTE_ACTIVE GVL = Global Variabel List g_IPC2AMK = STRUCT dwDO = ENUM DO_AMK_REMOTE_ACTIVE = BOOL
Last updated: 2024-02-06

Post by kees-b on Enumeration ^{CODESYS Forge talk (Post)}
Hello, Can anyone give me advice or tell me what I'm doing "wrong"? I use "enumeration", but via, via (maybe that's the problem?) Similar situation in Codesys 2.3 this worked correctly. Now the BOOL is not found in the ENUM. GVL.g_IPC2AMK.dwDO.DO_AMK_REMOTE_ACTIVE GVL = Global Variabel List g_IPC2AMK = STRUCT dwDO = ENUM DO_AMK_REMOTE_ACTIVE = BOOL
Last updated: 2024-02-06

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 kleeswi on SysFileOpen does not work after update to V3.5 SP19 Patch 5 ^{CODESYS Forge talk (Post)}
Finally this solved my issue: https://forge.codesys.com/forge/talk/Engineering/thread/3da9ded84e/, and the official documentation https://faq.codesys.com/display/CDSFAQ/SysFile%2C+Persistence+Manager%2C+Datalog+Manager . Add the media folder to the PlaceholderFilePath. Like this: PlaceholderFilePath.2=/media/pi, $usb$ PlaceholderFilePath.2.View=1 PlaceholderFilePath.2.Volatile=1
Last updated: 2024-02-19

Post by cehermanstad on CODESYS V3.5 SP15 Patch 2 won't open ^{CODESYS Forge talk (Post)}
Hey, you probably already solved this, But I am posting to anyone coming over this thread with the same issue. Just hold your mouse cursor til black screen pops up. Right click and Left Click Maximize. There Something wrong with how the window minimizes in Codesys. Only happens once in a while. God luck to anyone with the same problem.
Last updated: 2024-02-25

Post by cihangur on Application has invalid license metrics. ^{CODESYS Forge talk (Post)}
Hi, I have a "CODESYS Control Standard L" license and I use Ethercat and Profinet in my project. The project works seamlessly with two fieldbuses. However, when I add modbus_Com (Serial) or 1 OPC Tag to the project, the program throws an exception (Application app=Application has invalid license metrics!). My license should support 10*Modbus and 512 OPC Tags. Why might this problem occur?
Last updated: 2024-03-25

Post by nano on Error building Extension SDK Linux code ^{CODESYS Forge talk (Post)}
Hey schnepper, when i look into your c-file, i would say that only the main-function is declared with cext-addendum in your codesys-library-project. all yöur funtions in library has to be the cext-addendum when the external implementation is activ. if i remeber right, methods and other subelements dont need that, but every base-elements
Last updated: 2024-04-02

Post by dkugler on build (F11) / generate code using a python script file ^{CODESYS Forge talk (Post)}
After a project is opened and I have done some changes, I want to start the build or code generating process by a python script file. After the build is done I a Windows sound/beep should appear. Anyone has an example or hint how the .py file has to look like? Thanks!
Last updated: 2024-04-10

Post by tomas111 on Black background when loading webvisu ^{CODESYS Forge talk (Post)}
Tell me, are there ways to remove the white background from the page loading? I want to change it to a black background. I think there are options with changing /home/codesys_root/PlcLogic/visu/webvisu.htm Perhaps you have already encountered a similar situation. I hope to find the answer to my question.
Last updated: 2024-04-17

Post by fjgonzalez on Timer On Vijeo ^{CODESYS Forge talk (Post)}
Hi. I'm trying to show in Vijeo Designer a timer countdown. But I want to display the data in hour, minutes and seconds. I tried to change the data by converting in the Machine Expert but not able to succeed. Can you help me to find a solution? Regards, FG
Last updated: 2024-05-07

Post by timvh on Change the Opening Position of the Dialog using VU.FbOpenDialog ^{CODESYS Forge talk (Post)}
Probably best to call the FB continuously. So something like this could solve it: IF xOpenLatchSettingDialog THEN xOpenLatchSettingDialog := FALSE; fbOpenLatchSettingsDialog.xExecute := TRUE; END_IF IF fbOpenLatchSettingsDialog.xDone OR fbOpenLatchSettingsDialog.xError THEN fbOpenLatchSettingsDialog.xExecute := FALSE; END_IF TopLeftDialog.iX := 100; TopLeftDialog.iY := 23; fbOpenLatchSettingsDialog( itfClientFilter:= VU.Globals.OnlyTargetVisu, sDialogName:= 'visu_AlarmLatchSettings', xModal:= TRUE, pTopLeftPosition:= ADR(TopLeftDialog) );
Last updated: 2024-05-09

Post by corriibme on JSON Utilities and SetArray ^{CODESYS Forge talk (Post)}
Hello @florian, Could you please help with how to set an array value? I've been trying to use the with the setKeyWithArray method which creates the key with an empty array value. But I have been unable to set items in this array? objindex:= fb_JBuilder.SetKeyWithArray("Key6", diParentIndex := diRootIndex); objindex2:= fb_JBuilder.SetValue(value:= iValue2, diParentIndex:= objindexx); //iValue: array[0..n] of int; Best regards
Last updated: 2024-05-11

Post by matthew on New Ladder Diagram conversion does not work due to missing features ^{CODESYS Forge talk (Post)}
Hi @eschwellinger Just wondering if there is any update when the Expression or part of it has no effect will be fixed? Also have the ability to open an FB when online and offline. It would also be great to be able to view the ST code block when online.
Last updated: 2024-05-14

Post by micik on CAA File- FILE_OPERATION_DENIED error ^{CODESYS Forge talk (Post)}
Hello, I'm trying to use FILE.Open to open file that exists in the given location. sFileName is formed from "Copy as path" in Windows. So I'm sure file exists and it is in the given location. And still, I get thiss denied error. What could be the problem here? Attached is a screenshot with current implementation.
Last updated: 2024-05-16

Post by culius on How to reset AzureMQTTClient after error? ^{CODESYS Forge talk (Post)}
Hey Guys, is there any chance of direct reset of the AzureMQTTClient? When the Client runs in an error, I can not reset the client whit switch xEnable to off and on again. I always need to make a hard reboot. Any Ideas, or have someone else experienced this behavior? Kind Regards
Last updated: 2024-06-04

Post by kuegerls on SysProcessExecuteCommand2 and CANopen Device ^{CODESYS Forge talk (Post)}
I have now conducted some tests. The problem occurs when the Python script establishes an OPCUA connection, even if I only establish the connection without reading or writing any data. Is there another way to exchange data between Python and CODESYS without having to put in a lot of effort?
Last updated: 2024-06-24

Post by xabier on License Activation Problems ^{CODESYS Forge talk (Post)}
I bought two license and install with out problems....but the problem was when i changed the image in my controler and when i want activated again the license i have a problem Appear this 2 softcontainer and i can´t install any license again... Can someone help me please?
Last updated: 2024-06-24

Post by snguyen on Any ways to prevent Infinite scroll when moving an object to the left or top edge? ^{CODESYS Forge talk (Post)}
I've been making few HMIs and I'm starting to get annoyed that whenever I try to align an object to the left or top side of the frame, it quickly scrolls into that direction infinitely. Is there a way to prevent that?
Last updated: 2025-10-24

Post by timvh on Persistent Retain Variables Not Visible in Online View (WAGO PFC100 + CODESYS) ^{CODESYS Forge talk (Post)}
It is a known issue. It only happens with CODESYS and Wago controllers and the Persistent Variables. It seems related to using 64 bit variables in the PV list (e.g. LREAL). Internally in the PLC everything works okay. It is just a monitoring issue.
Last updated: 2025-10-26

Post by salmawis on Advice on OOP hardware I/O code structure ^{CODESYS Forge talk (Post)}
Call 10 FB instances. Connect Motor_1_Fault to the i_xHW_FaultDetected pin of FB 1, Motor_2_Fault to FB 2... By doing this, your FB will be flexible. The programming will be smooth like a perfect Drift Boss, instead of "hitting the wall" because it can't be reused!
Last updated: 2025-10-31

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