Post by bjarne-pagaard on Communication between applications on same device/controller/runtime (Win RTE 3.5.20.20) ^{CODESYS Forge talk (Post)}
Thanks for this - I have now been looking in to just having an extra (non-RTE) runtime on the same machine, as you suggest. I will probably proceed this way. Even though it still seems very odd to me, that variable exchange to a different runtime is easier than between applications on the same controller. There will be some fun with the licensing, it seems. Does anyone know if it is possible to specify which license container/specific license the runtime is going to use at runtime. Let's say I have two available licenses with different resources available, for example one license allows multicore and multiple EtherCAT channels, but not many visu tags (for the RTE). Another with less resources but a lot of visu tags (for the Visu controller). Let's say the program in one of the controllers could be fully licensed by either of the two available licenses, but picks the 'largest' first. A bit later, the larger application starts, but is left with the smaller license.. How can I make sure that the 2 runtimes select the right license at startup?
Last updated: 2024-10-01

Post by egau on Hard shutdown: no code on device after power on ^{CODESYS Forge talk (Post)}
This explanation aligns with the issues we’re experiencing with our machines. The scenario I described is happening with one of them (let’s call it Machine A). This machine is identical to another one (Machine B), except for some custom code that facilitates communication with an external Beckhoff PLC for MES integration in the production line. Machine B has been powered on and off daily for at least three months and has never had this problem. Given that, I highly doubt the MES custom code is the cause of the code corruption. This being said, your explanation does seem plausible. However, if faulty EtherCAT cables were the issue, why wouldn't the error occur during normal operation? Why would bad cables only cause problems during a hard shutdown? One last question: When you encountered this behavior, did you see a similar error in your logs? i.e, an "AccessViolation" exception in the EtherCAT Task?
Last updated: 2024-10-03

Post by r-c-r on SM3RaspiStepper 0.0.0.6 issue ^{CODESYS Forge talk (Post)}
Ok, so i made some tests in the meantime and i have some conclusions. It apears that the enable bit is activated only when a motion function is executed. I implemented a very simple program with MC_Power and MC_Jog. If i enable everything on MC_Power, the enable GPIO pin stays off. However, as soon as the MC_Jog function is used the enable GPIO pin turns ON and remains ON. In version 0.0.0.4 this is not happening. The GPIO enable pin turns on or off when the MC_Power is enabled or disabled. From this behaviour i understand that in version 0.0.0.6 the GPIO enable bit is activated together with pulse and dir pins when motion starts. When motion stops, enable bit remains with the last state (on in this case) and you cannot turn it off for example. For me this bit is useful because i can turn on and off the stepper drive with MC_Power function. Now i can turn it on, but never off.
Last updated: 2025-04-04

Post by egr99 on Modbus TCP Server connection is ESTABLISHED but all holding registers are value 0? ^{CODESYS Forge talk (Post)}
Hi there, Read the above description and experienced the same: Reading coil/discrete input/input register/holding register doesn't fill the mapped I/O variable. Any suggestions? Defined (see attachment): - Ethernet (with parameters according to the used Ethernet adapter of my Windows 11 laptop) - -Modbus TCP Client - - -LOGO231 as Modbus TCP Server - - -WS242 as Modbus TCP Server (WaveShare Modbus TCP <-> RTU converter) - - - -WS242_01 as Modbus Server, COM port (slave-id 1 RTU) - - - -WS242_03 idem (slave-id 3 RTU) - - - -WS242_11 idem (slave-id 11 RTU) Writing coil/holding register works from a mapped I/O variable works fine. Verification of Modbus traffic with WireShark: QUERY to and the RESPONSE of all slave-ids are correct Status of all defined is CONNECTED, RESPONSE_SUCCESS, RUNNING etc. Request counters increase with expected frequency. Error counter = 0. (To have all counters works fine I had to change Modbus TCP Client's parameter OptimizationON to FALSE). LOGO231 works fine: values in mapped I/O conform expectation WS242 without Modbus Server, COM port and with defined channels (for only 1 slave-id possible) works fine. PLC Settings: Update I/O while in stop: I see xBusy changing from FALSE to TRUE and vice versa. Always update variables: Enabled 1
Last updated: 2026-04-05

Post by shrikantp007 on help to get codesys understand ^{CODESYS Forge talk (Post)}
Hello , I need some help on how to start with , 1) how to get test license to test codesys , 2) how to take a configuration backup or running process back and post file on fourm so people can understand and deploy same file and get idea what is missing or configure wrong 3) where i can get pdf for codesys admin or programmer 4) what is hardware recommand ,i am running on windows guest on kvm server .is it ok ? 5) i am trying to get ardunio porject working ,using ardunio board as a modbus slave but its not working some how https://forge.codesys.com/forge/talk/Engineering/thread/bf832569b8/ Thanks in advance . shrikant pune -india
Last updated: 2024-07-22

Post by sangeetnenwani on Test Driver Availability in CODESYS 64-bit and Test Manager 5.1.0.0 ^{CODESYS Forge talk (Post)}
I’m operating with CODESYS in a 64-bit configuration and the Test Manager at version 5.1.0.0, where I’m attempting to use project scripts from an earlier version. These scripts call for certain test drivers that are not present in my installation. It’s unclear whether the absence is due to the 64-bit system, an update in the test drivers, or if I need to enable or install additional elements. For instance, the loadproject(Codesys.Base) command is missing, but loadproject(testmanager.project) is available. The FileIO command for CODESYS isn’t accessible, yet the testmanager’s driver for it exists, as does the execuptscript command.
Last updated: 2024-08-06

Post by sangeetnenwani on Test Driver Availability in CODESYS 64-bit and Test Manager 5.1.0.0 ^{CODESYS Forge talk (Post)}
I’m operating with CODESYS in a 64-bit configuration and the Test Manager at version 5.1.0.0, where I’m attempting to use project scripts from an earlier version. These scripts call for certain test drivers that are not present in my installation. It’s unclear whether the absence is due to the 64-bit system, an update in the test drivers, or if I need to enable or install additional elements. For instance, the loadproject(Codesys.Base) command is missing, but loadproject(testmanager.project) is available. The FileIO command for CODESYS isn’t accessible, yet the testmanager’s driver for it exists, as does the execuptscript command.
Last updated: 2024-08-06

Post by yannickasselin on codesys VLAN tagging ^{CODESYS Forge talk (Post)}
Hi, I am looking for exactly the same thing. I would think that using a layer 2/3 managed switch should work but I am not convinced. I would like to test it in order to see if it would be possible to run many Codesys Docker instances on a server and run only 1 ethernet cable from the server to a managed switch closer to the machines beeing controlled instead of having to run multiple long ethernet cables. I was going to buy a managed switch in order to test it but I want to first make sure it is possible and I want to figure out exactly what kind of switch I would need. Is this even possible? I think this is a feature that would be very useful paired with "Codesys Virtual Control SL". Thank you
Last updated: 2024-09-07

Post by shabroz-gill on Exception when OPCUA datasource disconnects from Server ^{CODESYS Forge talk (Post)}
If i loose the network and the opcua data source suddenly looses connection with the server, i get an exception and my application stops working. I am using the latest version of the communication add v4.5.2.0 Is this a known issue? This makes the datasource unusable because it is inevitable that we will loose connectivity at some point, and the datasource crashing everything due to that seems to be a deal breaker. I can provide more details is someone from codesys is reading this. You can recreate is by just shutting off the Opc server after the codesys data source is connected and reading data from it. The codesys app does not crash everytime and sometimes it is able to reconnect without crashing, so you may have to try this a few times to see the exception. Best regards
Last updated: 2024-09-16

Post by hyys12 on CODESYS 3.5 dicovery of PLC modules ^{CODESYS Forge talk (Post)}
I have a WAGO PLC, to which I am establishing a connection. Here I use the autodiscover to register the connected modules. Now, I have tested the in-/outputs of the different modules, to verify they are consistent with how they are physically connected to the PLC in regards to how CODESYS has numbered them. Will CODESYS always number the modules closest to the PLC itself lowest, and the one furthest away, the highest? I am rather new to the program, so I both hope my question makes sense, as well as not being completely obvious. Thanks!
Last updated: 2024-12-06

Post by askic on Library Documentation Export Error ^{CODESYS Forge talk (Post)}
Hello, I have encountered a very strange and non descriptive error when creating libraries. Basically, when user just create a new CODESYS library, and then just add Text List, save build with no errors and then try to save as compiled library, the following error would be generated: "The library documentation export error" and nothing more, just like shown in the attachment. Of course I have installed package CODESYS Library Documentation Support v 4.6.0.0 I'm Using Codesys 3.5.20 Patch 2 Does anybody have any suggestion about the cause of this error or any advice on how to troubleshoot further?
Last updated: 2025-02-15

Post by mehakfatima on Need Help Configuring Energy Analyzers via Modbus TCP & RTU (RS-485) in CODESYS 3.5 ^{CODESYS Forge talk (Post)}
Hello everyone, I am currently working on reading data from energy analyzers using Modbus TCP and RTU (RS-485). In my previous software, I used the following method to add slave devices (i have attached the image) and configure registers: Add the Modbus slave device. Configure the communication parameters (baud rate, parity, etc.). Define the registers and their addresses for data retrieval. Now, I am trying to achieve the same in CODESYS 3.5, but I am not sure how to configure the Modbus master, add slave devices, and set up the registers properly. If anyone has experience with Modbus TCP/RTU setup in CODESYS 3.5, I would really appreciate your guidance! A step-by-step explanation or any references/tutorials would be extremely helpful.
Last updated: 2025-03-13

Post by qkkk on Device Scan ^{CODESYS Forge talk (Post)}
Hello all, I have developed a custom I/O driver in CODESYS that communicates via a Unix Domain Socket. In my DeviceDescription.xml, I have set up the following: <scan supported="true"> <scanfbinstance fbname="IOScanDevice"> The goal is to allow the user to scan for connected I/O modules from the CODESYS GUI ("Scan for Devices") and automatically populate the device tree with detected submodules.</scanfbinstance></scan> The function block IOScanDevice is implemented in the driver library and added to the main device's FB instances. However, when I initiate the scan from the GUI, nothing appears to happen the function is not executed. Is there an example project or driver (open source or from CODESYS Forge) that demonstrates a working custom scan implementation?
Last updated: 2025-05-26

Post by rockallsue on Frustration-Fueled Feedback on Project File Management and Git Integration ^{CODESYS Forge talk (Post)}
Some developers export ST code manually and edit it in VSCode, then copy it back. However, a more practical approach might be using automation scripts (PowerShell, Python) to extract and inject code into the CODESYS project. You could also check if CODESYS Automation Server or CODESYS API allows better ST access for external tools. https://www.codesys.com/the-system/releases-updates-lifecycle/release-plan-roadmap.html Network drive issues are particularly painful. As a mitigation, you could try using local project storage with periodic cloud sync instead of directly saving to a network drive. Using Rsync or Syncthing for automatic but safe synchronization might reduce risks of file corruption.
Last updated: 2025-06-03

Post by sumit on Remote Ethernet/ip Adapter communication with scanner running on codesys ^{CODESYS Forge talk (Post)}
Hello there, I have my ethernet/ip adapter (from Texas Instrument) running on Texas Instrument Board and I have configured the scanner on codesys. I have mapped the I/Os and I can see (on wireshark) the frames coming from adapter but I don't see my input variables in scanner get updated, they just stay at 0. I wanted to see the real data that has been sent from adapter to scanner on codesys. I am not sure if the problem is in I/O mapping or there is a step/s that I have missed. I have attached the screenshot of my project for your ref. Thank you, Sumit
Last updated: 2023-12-15

Post by sumit on Remote Ethernet/ip Adapter communication with scanner running on codesys ^{CODESYS Forge talk (Post)}
Hello there, I have my ethernet/ip adapter (from Texas Instrument) running on Texas Instrument Board and I have configured the scanner on codesys. I have mapped the I/Os and I can see (on wireshark) the frames coming from adapter but I don't see my input variables in scanner get updated, they just stay at 0. I wanted to see the real data that has been sent from adapter to scanner on codesys. I am not sure if the problem is in I/O mapping or there is a step/s that I have missed. I have attached the screenshot of my project for your ref. Thank you, Sumit
Last updated: 2023-12-15

Post by mondinmr on Shared Memory Access Issues ^{CODESYS Forge talk (Post)}
In Windows I need create shared memory in PC software and connect from CODESYS. If shm is not GLOBAL doesn't work due different users between runtime and PC software. PC software need admin privileges. Name need "Global\\" before key. Very unsafe!!! If CODESYS create shared I cannot find key PC side. In Linux I can create shared memory as standard user, bind in the runtime docker, use keys without any "Global\\". Much more safe!!! If CODESYS create shared you need play with permissions to use app as standard user. I prefer create form PC software as standard user.
Last updated: 2024-01-30

Post by ragarcia on Error while using Codesys SP19 Patch 4 on Windows 11 ^{CODESYS Forge talk (Post)}
Hello everyone, I just installed Codesys SP19 Patch 4 on Windows 11 and every time I open Codesys I get an error that says (Attached image): 'One or more issues ocurred with the current versio profile. Please contact the vendor to resolve these problems. The plug-in {....} (Exactly 4.15.0.0) is required by the current version profile., but has not been installed. It is highly recommended that the tools is terminated. Do you wanto to terminate now?' I cannot install any package since I get this error everytime I open or try to install any package. Can someone help me please, thanks in advanced
Last updated: 2024-03-26

Post by mbmik on IoDrvModbusTCP_Diag not defined when using MODBUS ^{CODESYS Forge talk (Post)}
Hi Im trying to setup a Weidmüller WL2000 to run with MODBUS, to get some data from a server. Codesys V3.5 SP20. The issue is, that whenever i attach an ethernet port and add MODBUS Master und also a Slave, codesys will compile the project, but there always seem to be some remaining errors, which or only visible, when setting the messages window to "Pre-Compiled". I tried a lot of stuff to get rid of these errors, but cant find to seem the reason. New installation of codesys, cleaned project, setup completely empty new project, manually adding libs. Nothing helps. Any help is apreciated. Maybe we are doing something wrong.. Example Project is available, if somebodey wants to take a look. Greetings and thanks alot
Last updated: 2024-04-15

Post by stewnguth on New License not working. ^{CODESYS Forge talk (Post)}
Hey there, I am pretty new to the codesys space, but I got a codesys control basic M license for my raspberry pi that isntalled with no problem yesterday. Today, I went to install the visualization M locense as well because I went over the variable limit and am getting a "servernotfound" error in codesys when attempting to activate. I also tried to follow the advice in some other threads and install using a license request file on the web interface but am getting a message saying "An internal error occured" when attempting to install the license. Can anyone help me get this up and running? Thanks for your time.
Last updated: 2024-05-23

Post by bitor-leao on *EXCEPTION* [ProsessorLoadWatchdog] codesys 3.5.11.40 ^{CODESYS Forge talk (Post)}
Good night. I am having a problem with CODESYS 3.5.11.40, which gives the exception EXCEPTION [ProcessorLoadWatchdog]. I followed some forum posts and tried to modify the CODESYSControl.cfg file, but it shows: [SysFile] Windows.WorkingDirectory=C:\ProgramData\CODESYS\CODESYSControlWinV3\D5050FE1 Then I go to this directory and try to modify CODESYSControl.cfg according to the forums, but it doesn’t work: [CmpSchedule] ;EnableLogger=0 ProcessorLoad.Maximum=80 ;Timeslicing.Mode=Internal ;Timeslicing.PlcSlicePercent=80 ;Timeslicing.PlcSliceUs=4000 ;Timeslicing.StartOnProcessorLoad=1 ;SchedulerPriority=5 ;SchedulerInterval=1000 I tried to change ProcessorLoad.Maximum to 0 or 100, but it doesn’t compile when I try. I really don’t know what to do,
Last updated: 2025-11-16

Post by bitor-leao on *EXCEPTION* [ProsessorLoadWatchdog] codesys 3.5.11.40 ^{CODESYS Forge talk (Post)}
Good night. I am having a problem with CODESYS 3.5.11.40, which gives the exception EXCEPTION [ProcessorLoadWatchdog]. I followed some forum posts and tried to modify the CODESYSControl.cfg file, but it shows: [SysFile] Windows.WorkingDirectory=C:\ProgramData\CODESYS\CODESYSControlWinV3\D5050FE1 Then I go to this directory and try to modify CODESYSControl.cfg according to the forums, but it doesn’t work: [CmpSchedule] ;EnableLogger=0 ProcessorLoad.Maximum=80 ;Timeslicing.Mode=Internal ;Timeslicing.PlcSlicePercent=80 ;Timeslicing.PlcSliceUs=4000 ;Timeslicing.StartOnProcessorLoad=1 ;SchedulerPriority=5 ;SchedulerInterval=1000 I tried to change ProcessorLoad.Maximum to 0 or 100, but it doesn’t compile when I try. I really don’t know what to do,
Last updated: 2025-11-16

Post by jonasz on Deploy LicenseServer for Linux SL ^{CODESYS Forge talk (Post)}
The machine I'm currently using (Celeron J1900) already has the Kernel RT patch. I checked the performance according to the documentation. After running CyclicTest for 4 cores, the value for each core is around 6-7. I went through the entire process according to the documentation (I envy the TaskMonitor results in the documentation). The documentation states: "CODESYS Virtual Safe Time Provider The CODESYS Virtual Safe Time Provider is a standard interface that the user can use to transfer a second and external time base to the CODESYS Virtual Safe Control. The implementation is done as a client, which must run on another system with an independent time base." How do I implement this? I've been struggling for two weeks now - I'm too old to give up.
Last updated: 2025-11-17

Post by imdatatas on Codesys IDE initialization error from a new Sandbox image ^{CODESYS Forge talk (Post)}
Hello everyone, I created a new sandbox image on the D drive with Codesys Installer. However, when I launch the IDE from this image, it gives the error shown in the attached image. -- Codesys V3.5 SP19 Patch7. -- The installer is the latest (2.5.0). -- All packages in the installer were updated to the latest version as of today when creating the sandbox. -- The originally installed IDE on the C drive does not give this error when launched. -- I last upgraded it to Softmotion 4.20.1.0 through the installer. Has anyone encountered the same or a similar issue? Will this issue be fixed in the next update? Best regards, Imdat
Last updated: 2025-12-05

Post by timvh on Version management ^{CODESYS Forge talk (Post)}
This depends on what you want to achieve with installing the latest version and how you manage your projects and repositories. Maybe you also want to update your device (right click on it to update) or maybe your device is depending on certain versions of libraries (go to the library manager in your project and download the missing libraries). An option is also to first create a projectarchive of the current project you have before you install a new version of CODESYS. Then you can open this projectarchive in the new CODESYS version. Especially if you install the latest version of CODESYS in a Sandbox.
Last updated: 2025-12-15

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