Post by cmj-icsys on Custom configure tab in device editor ^{CODESYS Forge talk (Post)}
Hi everyone, I’m developing a custom CODESYS I/O driver for my company’s device, and I’ve been studying the example projects in CODESYS V3.5 SP20 Patch 5. In the IOMappingExample.project, I noticed that EtherCAT devices provide additional configuration tabs in the Device Editor, such as General, Process Data, etc. However, for custom I/O driver examples (based on IoDrv), the Device Editor only shows the default tabs like <devicename> I/O Mapping or <devicename> Parameters.</devicename></devicename> I’d like to create custom tabs or configuration pages in the Device Editor (e.g., “General Settings”, “Communication”, etc.) to allow users to configure parameters in a more structured way. Could anyone explain: How to define and register custom tabs or UI pages in the Device Editor? What tools or SDKs are needed to create UI elements such as combo boxes or check boxes? How to bind those UI controls to device parameters defined in the XML (device description)? Any example, SDK reference, or documentation link would be really helpful. Thanks in advance!
Last updated: 2025-10-20

Post by rossanoparis on CAN TX regression in Control for Raspberry Pi 4.21.0.0 with CAN API library (RX works, TX silently fails) ^{CODESYS Forge talk (Post)}
Environment: Target: Revolution Pi (Kunbus RevPi), armv7l 32-bit OS: Raspbian GNU/Linux 9 (Stretch), kernel 4.19.95-rt38-v7 (SMP PREEMPT RT, built 2022-03-22) CAN: via SocketCAN (can0) Runtime: CODESYS Control for Raspberry Pi SL IDE: CODESYS V3.5 SP22 + patch 3 (previously V3.5 SP22 + patch 2, where everything worked with runtime 4.18.0.0) Library: CANBusAPI from the "CAN API" package, version 1.0.0.3 Summary: The setup worked correctly with V3.5 SP22 + patch 2 and runtime 4.18.0.0. After updating the IDE to SP22 + patch 3 and the runtime to 4.21.0.0, CAN transmission via the CANBusAPI library stopped working. Reception is unaffected. There are no error indications anywhere: the application runs normally and the CAN diagnosis reports a healthy bus. Systematic testing (below) shows the problem follows the runtime version, not the IDE update. Regression isolation: The same application (compiled under SP22 + patch 3, unchanged between tests) was downloaded to the same target with different runtime versions, changing only the runtime each time: 4.18.0.0: TX and RX both work 4.19.0.0: TX and RX both work 4.20.0.0: TX and RX both work 4.21.0.0: RX works, TX does not The behavior is fully reproducible in both directions (downgrading to 4.20 restores TX, upgrading to 4.21 breaks it again). Hardware, wiring, OS, project, and application code are identical across all tests. Diagnostic data (CANBusDiagnosis FB, while the application is transmitting on 4.21): ctSendCounter: incrementing normally ctTxErrorCounter: 0 ctRxErrorCounter: 0 eState: ERROR_FREE xBusAlarm: FALSE So the library accepts and counts the outgoing messages, no TX errors are reported, and the CAN controller state stays error-free, but the messages never reach the other nodes on the bus. Expected behavior: Messages sent via CANBusAPI (CANDriver / SendMessage) are transmitted on the bus, as with runtime versions up to and including 4.20.0.0. Notes: I am aware that the CAN API package (1.0.0.3, from 2016) is old; however, the regression is tied to the runtime version, since the identical binary works on 4.18-4.20. Questions: Is there a known change in CmpSocketCanDrv / CmpCAACanL2 between 4.20.0.0 and 4.21.0.0 that could affect TX via the CAN API library? Is runtime 4.21.0.0 still supported on Debian 9 Stretch (kernel 4.19, RT-patched), or is a newer OS required? If a minimum OS/kernel requirement was introduced with 4.21, is it documented?
Last updated: 2026-08-17

Post by mozed on Connection to device closed ^{CODESYS Forge talk (Post)}
Hello I am using an OpusA3 with version 3.5 SP17 Patch 3 as part of a project. I had no real problem before I encountered a problem that blocked me. The detection of the OpusA3 from Codesys is done correctly. The gateway is well configured and if I ping the gateway or the OpusA3 I receive the response correctly. The problem is that when I try to connect, the Opus screen freezes and a few moments later Codesys displays an error message ("connection to device closed"). I tried to change PC, to update the runtime, to change OpusA3 but the problem remains the same. I'm a little lost knowing that before it worked without problem. I went back to a previous version of the project (where it worked correctly) but the message still appears. Do you have any clues to solve the problem? Sincerely,
Last updated: 2023-08-23

Post by tvm on Web Client (HMI) Disconnects from Webvisu (Weidmuller u-OS) ^{CODESYS Forge talk (Post)}
ok, that's different than our issue then. We're using Schneider Electric M262 PLCs, and we've had it where certain web browsers cause the web server to only allow https connections, but it's not recoverable with a refresh. It usually requires a power cycle or even a full firmware flash. Your issue might have more to do with the timing. I don't know if it helps you, but we normally run our visu task at 200mS, with an update rate of 200mS. Seems to work. I went through this: https://faq.codesys.com/pages/viewpage.action?pageId=112525371 but it really seems like trial and error.
Last updated: 2023-09-06

Post by ewi04 on Recipe Manager - RecipeManCommands, load & write wrong values, Bug? ^{CODESYS Forge talk (Post)}
Hallo, I have a strange problem with the recipe manager. ISSUE: When using RecipeManCommands not all values are loaded correctly. Saving a recipe with CreateRecipe(), ReadAndSaveRecipe() or ReadAndSaveRecipeAs() works without any problems. BUT: LoadRecipe(), WriteRecipe() or LoadFromAndWriteRecipe() do not load the data correctly. It is Interesting that we have a different error pattern with LoadRecipe() than with WriteRecipe() or LoadFromAndWriteRecipe(). LoadRecipe() does not load all data and WriteRecipe() or LoadFromAndWriteRecipe() overwrites some data or assigns it incorrectly. And it is also strange that LoadRecipe() writes the values to the PLC. Normally it doesn’t do it. It makes no difference whether the memory type is textual or binary. I have an object consisting of STRUCTs which is inserted in the recipe definition. Environment: Codesys V3.5 SP19 Patch 4 (64Bit), Recipe Management 4.2.0.0 *Add a project (reduced to the problem)
Last updated: 2023-11-15

Post by toffeebonbon on EL7041-0052 - does it run with EL7041 SoftMotion? ^{CODESYS Forge talk (Post)}
I let this project rest for a while and picked it up last week. I have been in contact with the support from beckhoff and got the information that the terminals were identical (communication wise). As the Log of the Axis (not the drive's log) shows the error when trying to write into the register 0x8012 and set the value for an encoder to a value that is the default - at least according to the manual - I was wondering if it is possible to "not write that value" to skip that part? Or am I misunderstanding the way the library communicates with the drive?
Last updated: 2024-07-24

Post by pierre on difference between stub file and source file in scriptengine ^{CODESYS Forge talk (Post)}
I included the stub files of scriptengine (codesys python api) in a directory scriptengine of a project. I tried to include librarymanager like that: from scriptengine import librarymanager visual studio code detected an error. It said librarmanager could not be found. Indeed in the stub file, this was library_manager. But if I change it in my code, the plugin doesn t work anymore. I found an easy solution to this problem. I ve just changed the copied stub files.(library_manager -> librarymanager) But I think it would be better if you update it yourself in the future.
Last updated: 2024-09-20

Post by pierre on difference between stub file and source file in scriptengine ^{CODESYS Forge talk (Post)}
I included the stub files of scriptengine (codesys python api) in a directory scriptengine of a project. I tried to include librarymanager like that: from scriptengine import librarymanager visual studio code detected an error. It said librarmanager could not be found. Indeed in the stub file, this was library_manager. But if I change it in my code, the plugin doesn t work anymore. I found an easy solution to this problem. I ve just changed the copied stub files.(library_manager -> librarymanager) But I think it would be better if you update it yourself in the future.
Last updated: 2024-09-20

Post by jacobwago on v3.5 SP19 - Modbus TCP Devices - Channel Limit? ^{CODESYS Forge talk (Post)}
Hello, I have experienced the same issue as described above but for the Modbus Serial configurator. Looking for a solution. In v3.5 SP19 Patch 7 the Modbus Serial Master Slave configurator has a "virtual" limit of 10 channels. In v3.5 SP18 Patch 5 this virtual limit does not exist. I can successfully copy back and forth from 18 to 19 with out any build error. However, this is not a good solution for our customers. What is even more confusing is that the IoDrvModbus library is the same version (4.3.0.0) for both SP18 and SP19. Please help in providing a fix to the virtual channel limit of 10 in SP19. Thanks,
Last updated: 2024-09-29

Post by pistola on Case Function - Multiple Conditions, Is it possible? ^{CODESYS Forge talk (Post)}
Looking at the help (https://content.helpme-codesys.com/en/CODESYS%20Development%20System/_cds_st_instruction_case.html). I don't think it is possible but I figured I'd ask. I'm looking at have a case that evaluates two variables, instead of having multiple If Else statements I was hoping I could just use a case. Example * Case Var1 & Var 2 of 10 & 10: Instruction Code 10 & 20: Instruction Code 20 & 20: Instruction Code End_Case Obviously I tried typing as noted above and Codesys threw an error. But I was wondering if there was a different way of programming to make something like this work? If not I'll just use a bunch of If Else Statements, Thanks.
Last updated: 2024-11-03

Post by sigurdrb on Codesys and error messages, warnings exceptions etc. ^{CODESYS Forge talk (Post)}
Hi, I tried some different libraries (CmpApp etc.) to find some global variables that I could read out as a variable in the codesys environment. Do any one of you know which libraries are best suited for this, and how I can read it out? My goal is to send messages, warnings etc. to the system that communicates to the PLC. Currently if something goes wrong I need to see the logfiles, or go online with the controller. I think I could save a lot of time if I could read the errors from our user interface that is connected to the PLC by TCP/IP.
Last updated: 2024-11-06

Post by lsislsis on SIGABRT Error ^{CODESYS Forge talk (Post)}
2024-11-08T13:39:07.354Z, 0x00000103, 65544, 1, 0, runtime received SIGABRT - system may be in an inconsistent state* We recommend a reboot of the controller now! 2024-11-08T13:39:07.354Z, 0x00000111, 8, 260, 3, #### Exception: More than 2 exceptions in CH_COMM_CYCLE: Stop logging 2024-11-08T14:36:33.126Z, 0x0000100d, 1, 0, 0, Demo mode expired. 2024-11-08T15:35:49.253Z, 0x00000103, 65544, 1, 0, runtime received SIGABRT - system may be in an inconsistent state We recommend a reboot of the controller now! 2024-11-08T15:42:54.664Z, 0x00000103, 65544, 1, 0, runtime received SIGABRT - system may be in an inconsistent state We recommend a reboot of the controller now! *
Last updated: 2024-11-08

Post by agentcousto on [Bug report] Issue with Importing XML Files Containing "POINTER TO" Variables in Codesys Platform Plugins Versions 2.7 and 2.8 ^{CODESYS Forge talk (Post)}
Hello, I have developed a Python script that I run to import XML files into my project. For this, I use the Python function import_xml(). Everything was working fine when I was using Codesys platform plugins version 2.6.1.2320, but since I upgraded to versions 2.7 and even 2.8, some files are no longer imported correctly. After some research, I identified that all the files containing variables of the type "POINTER TO" are affected. I have attached a screenshot of the error I am encountering. Do you know about this bug? Do you plan to fix it?
Last updated: 2025-03-26

Post by eaglealex on Length of string and Array of bytes ^{CODESYS Forge talk (Post)}
Hello! I have tried read a file to the string variable. But I faced a problem - there is about 2800 bytes of information in file, but string have a limit 2393 bytes. I made two variables with same address (for automatic convertion) - string[3000] and array of bytes[1..3000]. And I noticed that array of bytes contains all information from file, but string shows only first 2393 bytes. So I have lost information. Is there really such a limitation? Or I have an error in my program and Codesys 2.3 have no limit for such kind of conversation between string and array of bytes? Thank you very much!
Last updated: 2025-04-01

Post by aeem on CODESYS Installer does't open ^{CODESYS Forge talk (Post)}
Just downloaded stand alone setup, deleted old installer and installed new. Looked up at the installation log - MSI (c) (48:E0) [19:33:49:483]: Windows Installer installed the product. Product Name: CODESYS Installer. Product Version: 2.4.0.3545. Product Language: 1033. Manufacturer: CODESYS GmbH. Installation success or error status: 0. Installer still not running EDIT: It's working. Somehow my Windows Event Log service was disabled. I restarted the service and everything is working fine right now. Click the Start Menu or (Windows key + R) Type services.msc into the search field (Enter) Open the Services app Find a service you want to disable/enable (Windows Event Log), and double click Click Start
Last updated: 2025-04-01

Post by manuknecht on Using an Axis of an Axis Group in Torque Conctrol ^{CODESYS Forge talk (Post)}
I don't seem to be able to use an axis, which is part of an Axis Group in torque control mode. I call the SMC_SetControllerMode FB to switch from position to torque control mode, followed by the SMC_SetTorque FB to set the desired torque. This works flawlessly for most axes, however if an axis is part of an axis group, switching the controller mode seems to work without any issues, but the desired torque is never set. SMC_SetTorque does not return an error, but fSetTorque of the axis is never changed. Disabling the axis group before does not change anything, but if I use MC_UngroupAllAxes before changing the controller mode, it all works as it should. Is there no way to control a single axis in torque control, if it is part of an axis group?
Last updated: 2025-07-17

Post by sean-barton on Function block method default arguments ^{CODESYS Forge talk (Post)}
I have default arguments specified for function block methods but when calling a method, an error is produced requiring me to supply all the arguments despite there being default values. According to the online documentation, under section "Calling a Method" and subsection "argument passing" of the following link: https://content.helpme-codesys.com/en/CODESYS%20Development%20System/_cds_obj_method.html "Passing an argument for an input ... can be omitted ... for which a default or initial value was specified in the declaration..." I have found this to be the case for all Codesys IDEs I've used, 3.5.11, 3.5.16, 3.5.17, 3.5.19. Am I missing something?
Last updated: 2023-12-21

Post by davidbo on Does the new license policy means I have to upgrade everything? ^{CODESYS Forge talk (Post)}
We have several old project written with 3.5.17 and 3.5.18 and also some older Until now when a customer ordered a product from us. We just installed (we have a tested image) and added a license Now the license policy has changed and we have to buy a License Control Basic S or M However it only works with CODESYS Development System Version 3.5.19.10 or higher Does that mean we have to upgrade all our old products? That is not a simple task as a previous post has explained with weird error messages from CODESYS V3.5. Next we have to do rigorous testing of our applications afterwards. It is very expensive
Last updated: 2024-01-11

Post by fdmartello on Unable to compare projects containing alarm manager 4.5.0.0 ^{CODESYS Forge talk (Post)}
Hello. In Codesys version 3.5.19.50 when comparing two projects that have an "Alarm Configuration" obj from the Alarm Manager library vers. 4.5.0.0 the attached error pops up. This originally happened with two projects that I converted from vers. 3.5.17.30 so, thinking it was some conversion issue, I created two clean projects directly in 3.5.19.50 using the Standard Project template and only added the Alarm Configuration objects in them. The result is the same and the only way I found that allowed me to compare them is by deleting the incriminated object in one of the two projects. Has anyone else encountered this issue? Best regards
Last updated: 2024-01-19

Post by dhumphries on No source code available ^{CODESYS Forge talk (Post)}
Try using an Ethernet/IP scanner instead of an adapter, I'm guessing the 2 devices you're trying to communicate with are adapters, you have to have a scanner somewhere and Codesys should be a scanner. I don't know why you're getting the error, you should be able to use your Ethernet port as an EthernetIP adapter (although I've never had a reason to try,) but it's probably not what you wanted to do, unless you're connecting to another PLC that is a scanner. Good luck configuring the devices you're trying to connect to, it will be a lot easier if you have an .EDS file instead of starting with a generic module, even with an .EDS it can be tricky getting the communication working.
Last updated: 2024-02-03

Post by comingback4u on Memory Address Overlap ^{CODESYS Forge talk (Post)}
Hello, We use a controller that comes with a bunch of predefined faults. These faults are considered active and historic. They are a 32 byte array but only take up 26 bytes of data. Because of this the historic faults start at address 26 instead of 31. Active faults variable take up address location 0 to 31. Historic faults variable take up address location 26 to 57. Because of this overlap I get an error that these overlap and it wont allow me to download to my controller. This isn't an issue in 3.5.5.4 but becomes an issue in newer version. Is there a way to turn this off? If I change the address location, the historic faults then become broken without doing some manipulation in the code. The software will build just fine. Thank you for your time.
Last updated: 2024-03-07

Post by superjojo2002 on Licensing info not available. ^{CODESYS Forge talk (Post)}
I recognized that I have to start the two services "/etc/init.d/codemeter" and "/etc/init.d/codemeter-webadmin" in the docker container as well. If I do so, then the command "cmu -x" returns root@sensoredge-field-netfield-produktmanagment:/# cmu -x cmu - CodeMeter Universal Support Tool. Version 7.60c of 2023-Aug-09 (Build 5625) for Linux/ARMHF 64-Bit Copyright (C) 2007-2023 by WIBU-SYSTEMS AG. All rights reserved. So this time there is no indication any more that "Codemeter is not running". But still we are getting the error when using the license manager in CODESYS development system.
Last updated: 2024-03-21

Post by peterned on CNC - system goes to X=0 Y=0 before CNC file execution starts, how to avoid that? ^{CODESYS Forge talk (Post)}
Hi, I have a XY system and use a CNC file to move it. Everything works OK, except for the following: when CNC execution starts, the system rushes at high speed to (X=0, Y=0) point, and only then goes to the first line of the CNC file. If one of the axes is near 0, the system jumps and immediately stops with an error. In the CNC file settings (screenshot attached) I specified low default values for speed/acceleration and a start position different from 0,0 - but all that is ignored. Any idea how to avoid that move to 0,0 ? Thanks.
Last updated: 2024-04-26

Post by salvadegianluca on SysPlcCtrl23 and C0338: The library 'cmperrors interfaces, 3.5.5.0 (system)' is supported just in 32 bit applications ^{CODESYS Forge talk (Post)}
Good afternoon to everyone; I'm stuck with this error and I don't know how to get out from it... I tried several time googling for alternative systems to control the PLC applications and resets but without success. I would like to realize the possibility to reset the CPU and to start/stop the applications as it was possible with the SysPlcCtrl23, but this library is no longer supported in 64 bit systems and it seems due to the cmperrors interfaces sub library that was included in the above said one. Someone found a work around for this issue?
Last updated: 2024-06-14

Post by salvadegianluca on SysPlcCtrl23 and C0338: The library 'cmperrors interfaces, 3.5.5.0 (system)' is supported just in 32 bit applications ^{CODESYS Forge talk (Post)}
Good afternoon to everyone; I'm stuck with this error and I don't know how to get out from it... I tried several time googling for alternative systems to control the PLC applications and resets but without success. I would like to realize the possibility to reset the CPU and to start/stop the applications as it was possible with the SysPlcCtrl23, but this library is no longer supported in 64 bit systems and it seems due to the cmperrors interfaces sub library that was included in the above said one. Someone found a work around for this issue?
Last updated: 2024-06-14

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