Post by reinier-geers on Data to server
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HI, i want to copy data to a server of a costumor. Whats the easy way ? contoller is V20p5 but also 2 are V9.2
Last updated: 2025-11-11
Post by clockben on Python script to add libraries to project
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Hello, I have the same issue β some libraries arenβt resolved. When I load the libraries manually and delete them, reloading with the script works fine afterward. Have you found a solution since then? Many thanks in advance
Last updated: 2025-11-11
Post by emmieturner on Which Lib to use, connect to a socket with URL instead of IP address
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hi, maybe Net Base Services https://forge.codesys.com/prj/codesys-example/nbs/home/Home/ https://geometrydashlite.online Thank for sharing
Last updated: 2025-11-16
Post by tjacks on Opc UA Data Source Client Browse Error in Codesys HMI
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Codesys V3.5 SP21 Patch 3 Codesys HMI 3.5.21.30 I'm trying to connect to an OPC UA server on a Kuka robot controller using Codesys HMI's data source manager. I get through the login phase and the client browses most of the data structure on the server but errors out toward the end with a generic: Error while browsing the client, Failed with service result: BadUnexpectedError. If I complete the data source setup and try to update variables, I get the attached stack trace for the error. I've tried several different endpoint and security options. Most get me through the login but all error out while browsing. UA Expert happily connects and browses with the same configuration. I've connected this same version of Codesys to TwinCAT OPC UA servers and Siemens PLC OPC UA servers. Any ideas on what may be causing the generic BadUnexpectedError during OPC UA server browse?
Last updated: 2025-11-17
Post by grepoo on DataSource CodesysApp V3
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Hi, trying to create a datasource in appV3 but it returns error code 259 (not nearer specified) everytime, no matter the device i am using. Any idea of what it might signify ?
Last updated: 2025-11-19
Post by ggaida on runtime dynamic modbus devices
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Kurtk, I am working through a very similar scenario. I am curious if you have had any success since your post in implementing dynamic modbus configurations? Thx!
Last updated: 2025-11-20
Post by ggaida on runtime dynamic modbus devices
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Kurtk, I am working through a very similar scenario. I am curious if you have had any success since your post in implementing dynamic modbus configurations? Thx!
Last updated: 2025-11-20
Post by bertram on Installation IOT Libraries kann nicht installiert werden
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Habe mittlerweile festgestellt das es nicht am package liegt, auch andere sinddavon betroffen. Ich denke das Problem wird durch windows verursacht, aber was kann dazu fΓΌhren ??
Last updated: 2025-11-25
Post by tristan on Textfield display problem
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Hello Tim, I am using CODESYS Visu V4.8.1.0. It works when I turn off the "Support client animation and overlay of native elements". But if I do that, dialog box moving and other options are also disabled so it is a bit problematic. Thank you for helping.
Last updated: 2025-11-27
Post by sb879 on Non-formal invocation of function blocks in CODESYS
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Is it possible to do non-formal invocation of function blocks in CODESYS? I get an error when I try, see the attached pic. Also attached a pic from IEC 61131-3 describing non-formal invocations.
Last updated: 2025-12-04
Post by sb879 on Non-formal invocation of function blocks in CODESYS
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Is it possible to do non-formal invocation of function blocks in CODESYS? I get an error when I try, see the attached pic. Also attached a pic from IEC 61131-3 describing non-formal invocations.
Last updated: 2025-12-04
Post by somlioy on Non-formal invocation of function blocks in CODESYS
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No that is not possible for function blocks, although it is possible to that with methods and functions as you see in your second pic.
Last updated: 2025-12-05
Post by eld-t on Change Git local repository folder name
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Hi, how do you change the Git local repository folder name? It is called "project" by default, so we would like to rename it to something more descriptive especially for the remote repo's sake. Thanks!
Last updated: 2025-12-10
Post by baott569 on CODESYS OPC UA Security: HMI Client Not Receiving Server Certificate
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Hello everyone, I am currently using OPC UA in CODESYS with the security mode BASIC256SHA256 β Signed and Encrypted. The OPC UA Server is running on an RTE CX device, and the HMI is running on another computer. I have reviewed many CODESYS documents and successfully established communication when the security mode is set to None with Anonymous login. However, when security is enabled, the server does not provide its certificate for the CODESYS HMI client to trust. Interestingly, the client can send its certificate to the server, and UAExpert works normally, but the CODESYS HMI client does not receive the server certificate. Can anyone help clarify what I might be missing? I have been stuck on this issue for three days. If I missed or misconfigured any step, please let me know. I believe I am stuck at step 15 in the following CODESYS guide: Encrypting the Communication of a Data Source OPC UA Client https://content.helpme-codesys.com/en/CODESYS%20Communication/_cds_encrypt_communication_data_sources_opc_ua_client.html Thank you very much.
Last updated: 2026-01-06
Post by bruno-roth on Parker Compax3 controlled by Schneider LMC 201
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Hello, you could use any CODESYS PLC which has an EtherCAT master and the possibility to run the CODESYS Softmotion.
Last updated: 2026-01-13
Post by remlab on WebClient result empty
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If I try http://192.168.0.250:50543/api/xdevices.json?key=XXX&SetC1=1 it write correctly Why can I write but I can't read the Json ?
Last updated: 2026-03-04
Post by osande on Archive
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Problem with Visualization Manager and archiving. Project without VM has no problem. With VM in the project there is an error message and no archive has been created
Last updated: 2026-03-10
Post by mtorell on Safe Editor in codesys v3.5sp21p30
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How do I negate an output signal from an OR gate. I have tried right click to no avail and I cannot find an propriate NEGATE box? I want to save the output from the block to an inverted variable.
Last updated: 2026-03-12
Post by osande on Trend/trace data
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Anyone have problems with trend in lastest release - SP21 Patch5? Does not record data, stores only zeros to the sqlite database and flatliners at zero in trend/trace views. Worked in P4.
Last updated: 2026-03-12
Post by bdschnapp on OPC-UA ApplicationUri / ProductUri
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Were you able to figure out if it is possible to change the Application/Product URI of your server? I am having the same problem.
Last updated: 2026-03-16
Post by hannibal on Codesys Trend - setting Y axis minimum and maximum as variables - error
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Hi, It was my fault. I was using a REAL variable instead of INTEGER. Sorry for posting this.
Last updated: 2026-03-22
Post by gseidel on Smooth path is not working with SMC_NCInterpreter
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Hi tommyk-mar, do you call SMC_SmoothPath after SMC_NCIntepreter? Both G51 in the G-Code and the function block call are needed. You can see how this can be done in this example: https://content.helpme-codesys.com/en/CODESYS%20SoftMotion/_sm_example_cnc_3.html Best regarsd, Georg
Last updated: 2026-03-27
Post by reinier-geers on Draw nails pattern
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Hi I want to draw a nailpattern. But codesys Hasnt a draw command. And i dont want to draw 1000 nails and move them in position. Any one an idee ?
Last updated: 2 days ago
Post by amira on Visu 4.9.1 auto-logon/login
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Hello Julian, could you please check in Chrome Password Manager Settings if the option "Offer to save passwords" is set? With this option selected, a pop-up message will then show up asking whether or not to save the password. Choose OK. Hope this helps.
Last updated: 2026-01-14
Post by dim54 on Disabling automatic logout from the owner user
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Hello! Please tell me how I can disable the automatic logout as the Owner user (CODESYS 3.5 SP15 Path 2). I have to reconnect multiple times during the workday. Thanks!
Last updated: 2026-01-16
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