Post by mmpl on Array of UDT Compare ^{CODESYS Forge talk (Post)}
Hi I am trying to compare value of Array. I am getting an error. I attached picture. Please help.
Last updated: 2024-04-08

Post by bouadel on Trend recording build error - the variable "arrTraceMgrVariablesImpl" is too large ^{CODESYS Forge talk (Post)}
Hello do you find a solution ? I have the same Kind regards Adel
Last updated: 2024-04-09

Post by eschwellinger on Identifier 'IoDrvGPIO' not defined ^{CODESYS Forge talk (Post)}
it is just a precompiler error, login an start the application. Works.This will be fixed hopefully to next version.
Last updated: 2024-04-10

Post by ademarvribeiro on Could not be resolved - Library error ^{CODESYS Forge talk (Post)}
Hello. Did you try delet this library and rebuild the Project?
Last updated: 2024-04-12

Post by rmaas on Fieldbus has lost synchronicity ^{CODESYS Forge talk (Post)}
Thanks for the suggestions! It seems that increasing the value DCInSyncWindow helped, running without error for 1/2 day now.
Last updated: 2024-04-15

Post by installwhat on raspistepper error after install ^{CODESYS Forge talk (Post)}
I'm digging into it and see that sm3_shared is nested in the library manager raspistepper->sm3_drive_poscontrol->sm3_shared but I get errors
Last updated: 2024-04-20

Post by ademarvribeiro on Could not be resolved - Library error ^{CODESYS Forge talk (Post)}
Hello, send me your project pleaese. i'll try open in my laptop. Ademar.ribeiro1985@gmail.com.
Last updated: 2024-04-29

Post by k2saki on CNC Override speed. SMC_Interpolator.dOverride is working ? ^{CODESYS Forge talk (Post)}
Sorry, That was my mistake. I found a error in my program. Now it works well.
Last updated: 2024-05-01

Post by eschwellinger on IoDrvModbusTCP_Diag not defined when using MODBUS ^{CODESYS Forge talk (Post)}
error need to be solved by CODESYS. hopefully next release
Last updated: 2024-05-01

Post by eschwellinger on Problems with Raspberry Pi - IoDrvGPIO library ^{CODESYS Forge talk (Post)}
this is only a precompile error, will be solved but you ignore it works without any problem
Last updated: 2024-05-14

Post by micik on CAA File- FILE_OPERATION_DENIED error ^{CODESYS Forge talk (Post)}
Thank you wollview, it is clear now, it is due to security reasons that access to the file system is restricted.
Last updated: 2024-05-16

Post by installwhat on Error, visualisation property handling, VISU_USEPROPERTYINFO ^{CODESYS Forge talk (Post)}
same issue solved with this advice... thanks 3.5.19.5 project settings -> visualization -> advanced -...
Last updated: 2024-05-20

Post by ndzied2 on Rounding error in simple addition ^{CODESYS Forge talk (Post)}
Ignore, was duplicate post. Can't find a way to delete it.
Last updated: 2024-05-24

Post by thisischris on "You are using inconsistent overlay settings, please check your compiler defines for the current application" error ^{CODESYS Forge talk (Post)}
Duplicate
Last updated: 2024-05-28

Post by msegon on OPC UA Client failed to connect ^{CODESYS Forge talk (Post)}
Hi everyone, I would appreciate your help with a problem I've been working on for a few days but haven't been able to resolve. I'm trying to read data from Tridium Niagara 4.15 OPC UA Server, but I get the error BadCertificateInvalid. As far as I understand, you need to add a CA certificate somewhere to establish a secure connection, but I don't know where. 2025-10-27T09:06:43.247Z, 0x0000008d, 4, 0, 0, * ERROR: OpcUa_Channel_BeginConnect: Cannot create secure channel without certificates! 2025-10-27T09:06:43.247Z, 0x00001090, 4, 0, 0, * ERROR: Datasource: Error Failed (268468242) in state Connecting I tried communicating without encryption, but it doesn't find the point. Has anyone managed to establish encrypted OPC UA communication?
Last updated: 2025-10-28

Post by eschwellinger on Scara3 kinematic robot error ^{CODESYS Forge talk (Post)}
hi, which plc are you using? is it realtime capable? Linux with preempt rt or Control RTE on Windows?
Last updated: 2025-12-23

Post by winki on Error in licence activation ^{CODESYS Forge talk (Post)}
I am using Codesys Control for linux ARM64 SL. Installed with the SL deployment tool
Last updated: 2026-02-03

Post by maxcoulsn on ERROR: Calling the program "AlarmStorage_Prg" is not allowed from multiple tasks ^{CODESYS Forge talk (Post)}
Did you figure out this solution? Im on SP19 Patch 7 Experiencing the same issue.
Last updated: 2026-02-09

Post by hyplcmotion on The element of type 'VisuFbElemImage' could not be updated. Reason: Index was outside the bounds of the array. ^{CODESYS Forge talk (Post)}
Hello, I’m encountering the same issue. I only receive these errors when downloading to the PLC—there are no errors during the build—after upgrading to CODESYS 3.5.21.10. Is there any known fix or recommended solution? Visualization seems running ok, no PLC log error. Visualization: Error: The element of type 'VisuFbLabel' could not be updated. Reason: Source array was not long enough. Check srcIndex and length, and the array's lower bounds. Visualization: Error: The element of type 'VisuFbElemSimple' could not be updated. Reason: Source array was not long enough. Check srcIndex and length, and the array's lower bounds. Visualization: Error: The element of type 'VisuFbElemSimple' could not be updated. Reason: Source array was not long enough. Check srcIndex and length, and the array's lower bounds. Visualization: Error: The element of type 'VisuFbElemImage' could not be updated. Reason: Source array was not long enough. Check srcIndex and length, and the array's lower bounds. Visualization: Error: The element of type 'VisuFbElemSimple' could not be updated. Reason: Source array was not long enough. Check srcIndex and length, and the array's lower bounds. Visualization: Error: The element of type 'VisuFbElemSimple' could not be updated. Reason: Source array was not long enough. Check srcIndex and length, and the array's lower bounds. Visualization: Error: The element of type 'VisuFbElemImage' could not be updated. Reason: Source array was not long enough. Check srcIndex and length, and the array's lower bounds. Visualization: Error: The element of type 'VisuFbElemButton' could not be updated. Reason: Source array was not long enough. Check srcIndex and length, and the array's lower bounds. Visualization: Error: The element of type 'VisuFbElemButton' could not be updated. Reason: Source array was not long enough. Check srcIndex and length, and the array's lower bounds. Visualization: Error: The element of type 'VisuFbElemSimple' could not be updated. Reason: Source array was not long enough. Check srcIndex and length, and the array's lower bounds.
Last updated: 2026-01-26

Post by fefefede on Error C0521 - unknow compiler ^{CODESYS Forge talk (Post)}
Hello, i'm a new user of Codesys and student of ST program for PLC. Since today for a few new projects i have two error code C0521 and i can't solve. I also just try to update device and search library but nothign resolve. How can i fix this? Thanks
Last updated: 2023-09-02

Post by totorovic on CSVReaderInit returns error : INVALID_HANDLE ^{CODESYS Forge talk (Post)}
We changed the path where the CSV file is. From intern memory of the IPC to a USB key. We still have this error 'INVALID_HANDLE'. We must restart the Codesys runtime to clear it. That is a big problem for us because machine is in production. @eschwellinger What do you mean by "this is a security issue not to read/write in the plc allowed path"
Last updated: 2023-10-27

Post by vformanek on Datasource OPC UA Client error ID:7012 ^{CODESYS Forge talk (Post)}
Hey, I am facing the same problem. Basically UA Expert and other programs work fine with the login credentials. But codesys can not use them properly. I can see the server login to it manually but when I download the program and run the datasource never runs... Currently I am facing the same Error ID: 7012 and cant get it running properly.
Last updated: 2023-11-21

Post by jmfernandes on OpenDir always in error ^{CODESYS Forge talk (Post)}
Hello just to give more feedback the error I get is "ERROR_UNKNOWN :represents raw value of 5110" in File.DirOpen. The xDone never gets true, and I never get the listing of files (csv files in this case). In the hDir i get the value of 0 for a DWord!?
Last updated: 2024-07-31

Post by kkao on CODESYS V3.5 SP11 error "Cannot find INavigatorControl5" ^{CODESYS Forge talk (Post)}
Hi! I tried to start Codesys V3.5 SP11 program and this error message popped up (see attachment). Program worked fine last week. I tried to uninstall and then reinstall the program but it did not help. If I choose Ignore or Retry options the program works expect the UI is missing. Any ideas how to fix this?
Last updated: 2024-08-08

Post by maxsus on Error while processing the visualization: Client id not present or no longer valid ^{CODESYS Forge talk (Post)}
I dont know exactly why this error happens, but I think its because you have some wrong whiles. Because when i had that problem it was because I accidently wrote while true then and it was stuck in the loop.
Last updated: 2024-08-21

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