Post by eschwellinger on Unable to deploy "Control for Linux SL 4.18.0.0" ^{CODESYS Forge talk (Post)}
we need the Systeminformation in the Communication tap(logged in)
Last updated: 2026-02-17

Post by reinier-geers on Power off bit to save last log ^{CODESYS Forge talk (Post)}
3.5.20.4 Is there a power off bit, so i can save my last logfile ?
Last updated: 2026-02-17

Post by pernockham on Unable to deploy "Control for Linux SL 4.18.0.0" ^{CODESYS Forge talk (Post)}
Correct, my Device architecture says "None" is this position. A missing config somewhere?
Last updated: 2026-02-18

Post by jeffersonhui on Buttons with rounded corners in flat style ^{CODESYS Forge talk (Post)}
Hi, I am also having this problem. I want to check that buttons with rounded corners is still not possible?
Last updated: 2026-03-16

Post by reinier-geers on WebClient result empty ^{CODESYS Forge talk (Post)}
Hi Did you solve it ? I also have problems with webclient. I tried this forum but no responce.
Last updated: 2026-03-19

Post by husarz17 on How change Unity-ID in TCP Modbus Slave ^{CODESYS Forge talk (Post)}
Hi nulltrace, Thanks for the info. I'm waiting to hear back from you. Take care!
Last updated: 2026-04-13

Post by heman on CODESYS and Github Copilot ^{CODESYS Forge talk (Post)}
you might want to have a look at www.plc-assist.com . its an agentic chatbot that connects to you codesys projects.
Last updated: 2026-04-27

Post by heman on AI + Programming ^{CODESYS Forge talk (Post)}
have a look at www.plc-assist.com ...think it does what you are looking for
Last updated: 2026-04-27

Post by reinier-geers on Network variable stops sending ^{CODESYS Forge talk (Post)}
Thanks. but ive got unique identifiers. and i dont save to a file.
Last updated: 2026-04-28

Post by husarz17 on Pi as Modbus TCP slave. Errors ^{CODESYS Forge talk (Post)}
Hi, I have similar issue. Is that possible to use more than 4096 registers with Modbus RTU slave?
Last updated: 2026-04-29

Post by osande on V3.5 SP22 Patch1 ^{CODESYS Forge talk (Post)}
Can do. Suspect Visualizations as alarm colours disappear during upgrade, and some error messages related to trend/trace that are impossible to track down...
Last updated: 2026-05-08

Post by eschwellinger on Ladder editor bug with 3.5.21.20 ^{CODESYS Forge talk (Post)}
Hi, could you please update to Ladder 1.2.0.0 via CODESYS Installer and check if this is still in?
Last updated: 2026-06-01

Post by eschwellinger on Problem with keeping up the distance between two axes ^{CODESYS Forge talk (Post)}
Which controller which version which SoftMotion Drive... realtime problems?
Last updated: 2026-06-02

Post by brouwyka on JSONByteArrayWriter problem? ^{CODESYS Forge talk (Post)}
Hey there! I am currently running into the exact same issue. The JsonData object has all inexes & parent indexes in the way I expect, everything is correctly "linked". It purely seems that the writer is incorrectly parsing said JsonData, not based on parent & child index, but on something else that breaks it and puts things at the root, instead of the specified parent index. Did you ever manage to find a solution, or another way of achieving your JSON composing? I'm currently working on Codesys V3.5 SP19 Patch 7 with IIOT Libraries SL 1.13.0.0, specifically JSON Utilities SL 1.13.0.0 (to send requests to APIs with JSON bodies using Web Client SL 1.13.0.0).
Last updated: 2026-06-08

Post by brouwyka on JSON Utilities - JSON file written with invalid structure ^{CODESYS Forge talk (Post)}
Hey there! I am currently running into the exact same issue (and have also posted to a similar post here: https://forge.codesys.com/forge/talk/Engineering/thread/c45929e2f1/#e27f). The JsonData object has all inexes & parent indexes in the way I expect, everything is correctly "linked". It purely seems that the writer is incorrectly parsing said JsonData, not based on parent & child index, but on something else that breaks it and puts things at the root, instead of the specified parent index. Did you ever manage to find a solution, or another way of achieving your JSON composing? I'm currently working on Codesys V3.5 SP19 Patch 7 with IIOT Libraries SL 1.13.0.0, specifically JSON Utilities SL 1.13.0.0 (to send requests to APIs with JSON bodies using Web Client SL 1.13.0.0).
Last updated: 2026-06-08

Post by fabiodasilveira on Dynamic Setting IP Address from IEC code ^{CODESYS Forge talk (Post)}
It is a shame that it does not work with Eaton XC303 PLCs :(
Last updated: 2026-06-23

Post by arj3090 on Linux ARM64 Deploy Fail - Index out of range ^{CODESYS Forge talk (Post)}
This is the version shown in the CodeSys Installer.
Last updated: 3 hours ago

Post by paulpotat on Project size increasing continuously ^{CODESYS Forge talk (Post)}
I still have the same problem with Codesys 3.5 SP18. Initially, my project is ~5 Mo. I work on it for like 3-4 days and it goes up to ~10Mo. If I make an export of the project and import it in a new empty project, it goes back to approximately 5 Mo. Why is it doing this ?
Last updated: 2023-08-23

Post by bbm1995 on Security Screen - Custom Certificates for OPC UA Server? ^{CODESYS Forge talk (Post)}
Hi everyone, is it possible to use selfsigned/created certificates (eg. with X - Certificate and Key Management) as a OPC UA Server certificate in the Security Screen? As far as I know I can only upload client certificates to the PLC and move it to "Trusted", "Untrusted" and "Quarantined". Same question is on sps-forum.de
Last updated: 2023-08-23

Post by vformanek on No source code available for profinet library ^{CODESYS Forge talk (Post)}
I have tried downgrading and it seems fine now. I am now on version 4.3.0.0 for the library. Mainly the PN controller caused the issue for me. Funny weird is that even the PN controller versions 4.3.1.0 and 4.3.0.0 cause the error. Version 4.2.0.0 works fine.
Last updated: 2023-08-23

Post by martinlithlith on Device User Logon and No device is responding.. Pi4b codesys 3.5 SP19 2 + (64-bit) ^{CODESYS Forge talk (Post)}
Hi, Thank you for your reply! What should be the version 4.9.0.0? I have a user named pi on the pi, thats what i´m using as credientials to be able to for example update/install runtime. Or do i need another user? once agin, thank for the reply! Martin
Last updated: 2023-09-11

Post by transmin01 on EL6751 Canopen_Manager issue ^{CODESYS Forge talk (Post)}
Hi, I have a Beckhoff EL6751 EtherCAT / CANopen gateway which fails on the Canbus when the CANopen_Manager is added. Currently no devices are connected to the EL6751. If I add a device, I get the same issue. If I add a device and connect the bus, I get the same issue. Is there something I am doing wrong? Regards Trevor
Last updated: 2023-09-12

Post by eschwellinger on Correct CAN Driver for EL6751 ^{CODESYS Forge talk (Post)}
Hi, for Control Win : add CmpEL6751CanDrv in the c:\ProgramData\CODESYS\CODESYSControlWinV3x64\E1FA7ABE\CODESYSControl.cfg [ComponentManager] Component.1=CmpTargetVisuStub Component.2=CmpWebServer Component.3=CmpWebServerHandlerV3 Component.4=SysCpuMultiCore Component.5=SysReadWriteLock Component.6=SysCpuBreakpoints Component.7=SysPipeWindows Component.8=CmpEL6751CanDrv for Linux SL or Pi or any ARM device - I think it is already static loaded as component - see plclogger on startup
Last updated: 2023-09-20

Post by derpaul on Official MQTT-Client: MAX_RECEIVE_BUFFER_SIZE_EXCEEDED ^{CODESYS Forge talk (Post)}
Hello, my PFC200 has run for a few month now without problems. But now it freezed 2 times a day. LEDs were green but the PLC was not reachable. After power off -> on. I found that the MQTT had an error: MAX_RECEIVE_BUFFER_SIZE_EXCEEDED. And MQTT hadn't reconnect since then. I tried a cold and a warm reset but nothing helped. How can I solve this? Regards, Paul
Last updated: 2023-09-21

Post by derpaul on Official MQTT-Client: MAX_RECEIVE_BUFFER_SIZE_EXCEEDED ^{CODESYS Forge talk (Post)}
I've post the Versions in the Attachments. It seems with htop, that there is a very high CPU Load. In the Log I can see nothing, as mentioned above I've to restart the PLC with Power off/on and the log in codesys was deleted. Or what do you mean with plclogger?
Last updated: 2023-09-23

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