PN Controller : Open Ethernet Error ^{CODESYS Forge talk (Thread)}
PN Controller : Open Ethernet Error
Last updated: 2020-08-27

Open dialog via IEC code ^{CODESYS Forge talk (Thread)}
Open dialog via IEC code
Last updated: 2016-11-30

CAN 3s open slave stack? ^{CODESYS Forge talk (Thread)}
CAN 3s open slave stack?
Last updated: 2022-06-28

open dialog at relative position ^{CODESYS Forge talk (Thread)}
open dialog at relative position
Last updated: 2020-12-03

Open dialog in table element. ^{CODESYS Forge talk (Thread)}
Open dialog in table element.
Last updated: 2021-01-25

Can Open mit Raspberry Pi ^{CODESYS Forge talk (Thread)}
Can Open mit Raspberry Pi
Last updated: 2014-12-07

Could not open library 'SysSocket23, ^{CODESYS Forge talk (Thread)}
Could not open library 'SysSocket23,
Last updated: 2023-12-19

Alarm Manager Project Doesn't Open Successfully ^{CODESYS Forge talk (Thread)}
Alarm Manager Project Doesn't Open Successfully
Last updated: 2024-04-04

Open project automatic with correct version ^{CODESYS Forge talk (Thread)}
Open project automatic with correct version
Last updated: 2026-01-27

Post by brubingh on Download Missing Libraries not working ^{CODESYS Forge talk (Post)}
We are working on a project and the customer required 3.5.16 BF4. After working on the project for a few weeks I opened it the next morning and it could not access libraries. IecVarAccess could not be accessed. I checked if windows updated - it did not. So no explanation for why it lost access other than that I shut down the computer for the night. Note that I am using a demo license. I still haven't figured out any reason to purchase a license. So I spent the next hour reinstalling CodeSys. Note that I did NOT uninstall first. After install I waited another 5 minutes for it to open the first time. I clicked File->Open to open the project. Previously I had selected File->Recent Projects - not sure if that makes and difference. But after this process it did open the project and compile it just fine. This is miserable. If this had happened when I went on site to a customer I would have lost hours of work doing the reinstall. Is there a different and quicker fix?
Last updated: 2024-06-13

Post by fleaplc on FILE_OPERATION_DENIED ^{CODESYS Forge talk (Post)}
By using the CAA FILE library (FB FILE.Open) (raspberry pi, codesys 3.5.19.0) I always get the error FILE_OPERATION_DENIED The file exist, it has r/w/x access and path is correct... Some idea to fix it?
Last updated: 2023-09-25

Post by codegunner on how to convert library from CodeSys 2.3 to CodeSys 3.x ? ^{CODESYS Forge talk (Post)}
hello, ive tried everything and keep getting error like i have opened a file in read only so cannot save no idea what is causing it, file is not read only i cannot even open a new file i make with one variable in 2.3, get same error for read only. do you have a 2.3 file you can send me tomtry and open for a test? thanks
Last updated: 2026-04-29

Post by otbeka on CAA File Handling: "Read only" error ^{CODESYS Forge talk (Post)}
Hi, On CODESYS V3.5.19.50 I am using the latest 3S File Access library (CAA File & CAA Types) to save and retrieve configuration data from the User Data section of an SD card, via file called config.txt. The application reads the file to memory once upon initialisation, and then the only other operation is overwriting the file with the updated configuration whenever the user changes the settings. An issue is ocurring, seemingly randomly, where the config.txt file, and all surrounding directories, cannot be written to by the unit, returning a READ_ONLY_CAA error upon file open. This sometimes does not clear even after power-cycling the PLC several times, yet checking the file permissions with ls -l shows normal read, write, and execute access. I am wondering if this is caused by the PLC itself or by an issue in my application. I have included my CAA File handler function block (SD_Card_Bin(FB).txt) and any associated types/calls below: TYPE ConfigData : STRUCT Config : ARRAY[0..256] OF STRING(64); NumberOfStrings : UDINT; END_STRUCT END_TYPE TYPE Buffer : STRUCT Data : ARRAY[0..SIZEOF(ConfigData)] OF BYTE; DataLength : UDINT; END_STRUCT END_TYPE A case within my MAIN PRG: mode.WriteConfigDataToFile: VisuElems.CURRENTVISU := 'Screen_Write'; IF xModeHasChanged THEN iErrorCount := 0; iRoute := 0; END_IF CASE iRoute OF 0: inBuffer := ConfigData_To_Buffer(GVL.UnitData); xConfigError := FALSE; xDataConfigured := FALSE; iRoute := 1; 1 : //Read Data from Card SD_Card_Bin.strFileName :=FileName; SD_Card_Bin.iFileOperation := 2; SD_Card_Bin(xExecute :=TRUE, WriteBuffer := inBuffer, xDone =>xDataConfigured, xError=>xConfigError, strErrorCodes=>strError); IF xDataConfigured THEN SD_Card_Bin(xExecute :=FALSE); IF xConfigError THEN iRoute := 32767; ELSE iRoute :=100; END_IF END_IF 100: // The end bCurMode := mode.DisplayProcessVariables; 32767: // Config error iErrorCount := iErrorCount + 1; IF iErrorCount > 2 THEN // Repeats 3 times, if no progress abandons and returns error bCurMode := mode.WriteError; ELSE iRoute := 0; // Try again END_IF END_CASE I'd like to rule out my application as the cause of this bug - help via comments or criticism would be greatly appreciated.
Last updated: 2025-03-19

How to access files correctly in Linux ^{CODESYS Forge talk (Thread)}
How to access files correctly in Linux
Last updated: 2023-09-12

Access project information of references library by script ^{CODESYS Forge talk (Thread)}
Access project information of references library by script
Last updated: 2023-10-23

Access to a running Codesys instance via Python ^{CODESYS Forge talk (Thread)}
Access to a running Codesys instance via Python
Last updated: 2024-09-03

COL.IMap2 and HashTableFactory cause frequent Access Violation ^{CODESYS Forge talk (Thread)}
COL.IMap2 and HashTableFactory cause frequent Access Violation
Last updated: 2025-09-11

access visualization elements (2.3 method not working) ^{CODESYS Forge talk (Thread)}
access visualization elements (2.3 method not working)
Last updated: 2011-12-15

Access declared Text of Variable from Application ^{CODESYS Forge talk (Thread)}
Access declared Text of Variable from Application
Last updated: 2022-05-23

Cannot access primary project with --noUI option ^{CODESYS Forge talk (Thread)}
Cannot access primary project with --noUI option
Last updated: 2016-12-14

Access to device via IP instead of codesys address ^{CODESYS Forge talk (Thread)}
Access to device via IP instead of codesys address
Last updated: 2014-02-13

log ip adress of webvisu access ^{CODESYS Forge talk (Thread)}
log ip adress of webvisu access
Last updated: 2019-03-07

Access Rights Changed between 2.3.7.2 and 2.3.9.4? ^{CODESYS Forge talk (Thread)}
Access Rights Changed between 2.3.7.2 and 2.3.9.4?
Last updated: 2008-08-05

How to access Windows OS Information in Control Win V3 ^{CODESYS Forge talk (Thread)}
How to access Windows OS Information in Control Win V3
Last updated: 2018-04-05

Problem with installing the library. No access to the location. ^{CODESYS Forge talk (Thread)}
Problem with installing the library. No access to the location.
Last updated: 2022-03-18

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