Post by wagokurt on TargetVisu option missing in IDE ^{CODESYS Forge talk (Post)}
I have installed both the Codesys Control for Linux SL 4.16.0.0 and Target Visu for Linux 4.16.0.0 packages in Codesys 3.5 SP21 Patch2. When I try to add a target visu, it is missing. I have spent hours on this and tried different machines, all behave the same way. Is this a bug?
Last updated: 2025-08-21

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 leandroct on Creating Boot Application not working ^{CODESYS Forge talk (Post)}
I did these steps and it worked: - Copied Application.app and Application.crc to the Folder C:\ProgramData\CODESYS\CODESYSControlWinV3x64\ID_of_CPU\PlcLogic\Application\ copied the visu folder content to the folder C:\ProgramData\CODESYS\CODESYSControlWinV3x64\ID_of_CPU\PlcLogic\Application\visu\ Changed by Notepad the CODESYSControl.cfg at the folder C:\ProgramData\CODESYS\CODESYSControlWinV3x64\ID_ of_CPU\ Where is [CmpApp], adding a line with: Application.1=Application
Last updated: 2025-09-04

Post by kio123 on SysFileOpen not working ^{CODESYS Forge talk (Post)}
I have exactly the same problem and tried entering “ForceIecFilePath=0” in the file “CODESYSControl.cfg” ([SysFile]). Unfortunately, this was unsuccessful. Can anyone help in the meantime, e.g., with some sample code or with the FAQ that TimvH refers to above (link no longer works)? Many thanks and best regards
Last updated: 2025-09-15

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 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 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 Bit / Bool data types in function parameters ^{CODESYS Forge talk (Post)}
Any reason BIT and BOOL data types are not interchangeable? Trying to make a function which takes a BOOL IN/OUT parameter (Not allowed to use BIT) In the main logic if I make a DINT variable, and want to use each bit on different functions CODESYS will not allow it.
Last updated: 2024-01-17

Post by masmith1553 on SDO generation ^{CODESYS Forge talk (Post)}
If you add any device to the CANOpen Manager it will send messages to verify the device is on the network. Do you have the Enable expert settings check box checked in the General tab? have you added any SDOs in the SDOs tab? I avoid using the CANOpen Manager and just use the CAN_Tx and CAN_Rx blocks from the library.
Last updated: 2024-01-25

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 francescoc on Access to the path *** is denied ^{CODESYS Forge talk (Post)}
Hello, I encountered similar problems, and it appears they were linked to certain add-ons. Resolving this issue turned out to be quite complex. However, we managed to find a solution by downgrading both the "CODESYS Communication" and "CODESYS Recipes" components via the CODESYS Installer, accessible under the "Tools" section.
Last updated: 2024-02-12

Post by jmauer on Codesys 3.5 SP16 Modbus change port settings. ^{CODESYS Forge talk (Post)}
Hello, I'm coming to you today because I'm trying to make the baudrate and the slave number dynamic. I've tried the "updateComPortSettings" method on the slave device but it doesn't work and gives the "Modbus_COM_Port" an error. Can you tell me how you got this method to work? Thanks in advance for your help jérémy
Last updated: 2024-02-20

Post by abinvest579 on COP instruction ^{CODESYS Forge talk (Post)}
Hi All, I have hands on rockwell software like rslogix 5000 and studio 5000. Currently started working on codesys i want to know is there any COP instruction with similar functionality in codesys like rockwell. I want to use it to split REAL into 2 INT,DINT to 2 INT also reverse 2 INT into DINT and 2 INT into REAL. Thanks in advance
Last updated: 2024-03-18

Post by florian on Stepper Drive with Ethercat ^{CODESYS Forge talk (Post)}
Codesys has a motion libraries (SoftMotion), but you need to buy a licence keys for them to work. the most basic one is SoftMotionLight. you just have to select your drive in the device view and add a SoftMotionLight CiA402 axis. then the library is added to your project. You can use the SML_* motion FBs and configure the axis now.
Last updated: 2024-03-22

Post by nano on CODESYS Edge Gateway for Linux on embedded distribution ^{CODESYS Forge talk (Post)}
yocto isn't the part. which architecture you are using? arm, x86, 32bit?, 64bit? normally u can use the deliveral from store and integrate it into yocto. for resolv the dependencies, its best way todo using an recipe and let yocto do prebuildchecks jefore the install-commands
Last updated: 2024-04-17

Post by bryandimino on OPC Da Server Code Meter Issues after Enabling License ^{CODESYS Forge talk (Post)}
I'm trying to get the OPC server setup on my machine and currently I'm not having luck. I went ahead and got my license setup. However when I go to run WinCoDeSysOPC.exe I get an error message that I don't have the code meter licenses installed. Does anyone have any ideas on how I can fix this issue?
Last updated: 2024-05-02

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 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 scrisp on Source code changes since last download ^{CODESYS Forge talk (Post)}
Why does CODESYS 3.5 show the message “Source code changes since last download” even though I did not create or modify any new variables? When I go online with the PLC, it detects changes and suggests synchronizing, but nothing was actually changed in the project. What could cause this and how can I fix it?
Last updated: 2025-11-28

Post by mascara on CloseTargetVisu ^{CODESYS Forge talk (Post)}
I need to add a button to the Visualization to close it. And create a shortcut on the Windows desktop to reopen the Visualization. This is necessary to configure, for example, a local IP address. Is this possible? What command closes the Visualization? Which program opens Visualization? System: Win10 Codesys: Control RTE V3 x64 Program: Codesys V3.5 SP20 Using only a touchscreen monitor, without keyboard and mouse.
Last updated: 2026-03-11

Post by josepmariarams on Limit Axis CNC Jerk using SMC_Polynomial_AbsMaxLocs ^{CODESYS Forge talk (Post)}
I am using both functions for: I override SMC_LimitDynamics o calculate the individual axis jerk on polynomial movements. LimitDynamics only controls acceleration and velocity, it's not enought to create smooth movements. To solve the problem when smothing path create loops. It seems that polynomial passes two times by the same point and smc_smooth path chooses incorrect one.
Last updated: 1 day ago

Post by ilarioimi on Date Picker ^{CODESYS Forge talk (Post)}
Hello, I am new here and need some help. I have added the Date Picker to a visualization page. The date selection works, but the current day is not highlighted. The date and time are displayed correctly by the system, which is set by default to “VisuElems.Visu_DateTime.DisplayUTC:= FALSE;”. Is there some project setting or Visualization Manager setting that I am missing? Thank you. Ilario.
Last updated: 2026-01-14

Post by timvh on CODESYS: Combining Master Redundancy with EtherCAT Ring Topology – Is it Supported? ^{CODESYS Forge talk (Post)}
Yes, this works (at least we have it running with Wago PLC and Beckhoff I/O), but the concept works. You need 2 PLC's with at leat 3 network interfaces. And 2 switches (can be unmanaged). See the attached simple diagram for the solution.
Last updated: 2026-02-05

Post by pernockham on Unable to deploy "Control for Linux SL 4.18.0.0" ^{CODESYS Forge talk (Post)}
Ok, I think I understand. The problem is my language-setting being "swedish". I will check if I can switch to english. Update/confirmed. Change LANG to en_GB, this enabled the architechture to be correct and the control SL again to appear and to be possible to be updated. Thanks!
Last updated: 2026-02-23

Post by buczekj on ERROR: Calling the program "AlarmStorage_Prg" is not allowed from multiple tasks ^{CODESYS Forge talk (Post)}
Many issues with the alarmmanager and alarmstorage can be solved by deleting the configuration, rebooting, and redownloading. I've found that the configurator doesn't always update when you make chanegs. For linux installations it is typically located in /var/opt/codesys/PlcLogic/alarms/ look for file Application.AlarmConfiguration.xml cd /var/opt/codesys/PlcLogic sudo rm -r alarms sudo reboot
Last updated: 2026-04-09

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