Post by baott569 on Limitation on OPC UA Variable 100+ variables on raspberry pi ^{CODESYS Forge talk (Post)}
Hi, did you manage to resolve this issue?, I’m experiencing the same problem
Last updated: 2026-01-22

Post by mattkaree on Mapping values with etherCAT mailbox communication ^{CODESYS Forge talk (Post)}
I am using a WAGO PFC200 PLC as an etherCAT master and a Keyence IV3-G120 with DL-EC1A attached as an etherCAT slave. I am using CODESYS V3.5 SP21 Patch 3. I was able to set up mailbox communication and can see values changing accordingly, but I want to know how I can map these values and reference them in my program. I am able to map the process data objects in the 'EtherCAT I/O Mapping' tab, but there is no where to map the mailbox values in the 'CoE Online' tab. Is there a way I can reference one of these values in my code?
Last updated: 2026-01-27

Post by kambel on information security of CDS IDE 3.5.15.30 ^{CODESYS Forge talk (Post)}
Hello Please tell me if it is possible to hide information about devices in the Scan device window on pic.
Last updated: 2026-01-29

Post by dosnova on *exception* [processorloadwatchdog] occurred in: app=[all], task=[all] ^{CODESYS Forge talk (Post)}
I've the same problem. I'm not able to solve..
Last updated: 2026-02-10

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 pernockham on Unable to deploy "Control for Linux SL 4.18.0.0" ^{CODESYS Forge talk (Post)}
Thanks! Out of office, will check on Monday.
Last updated: 2026-02-19

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 hannibal on Codesys Trend - setting Y axis minimum and maximum as variables - error ^{CODESYS Forge talk (Post)}
I am experiencing an issue when trying to define the Y-axis limits in a Trend Graphic using variables. When I set the Minimum and Maximum values as variables, an error is triggered. My goal is to make the Y-axis limits dynamic so they can adjust according to the installation. Both variables are initialized as follows: gP_YMin = -100.0 gP_YMax = 100.0 However, I still get the following error: "The minimum axis value must be less than the maximum axis value" Does anyone have an idea why this is happening or how to resolve it?
Last updated: 2026-03-22

Post by hannibal on Codesys Trend - setting Y axis minimum and maximum as variables - error ^{CODESYS Forge talk (Post)}
I am experiencing an issue when trying to define the Y-axis limits in a Trend Graphic using variables. When I set the Minimum and Maximum values as variables, an error is triggered. My goal is to make the Y-axis limits dynamic so they can adjust according to the installation. Both variables are initialized as follows: gP_YMin = -100.0 gP_YMax = 100.0 However, I still get the following error: "The minimum axis value must be less than the maximum axis value" Does anyone have an idea why this is happening or how to resolve it?
Last updated: 2026-03-22

Post by msegon on Send HTML body with Mail Service SL ^{CODESYS Forge talk (Post)}
I'm trying to send a mail using Mail service SL. I would like the body to be in HTML format for a nicer look. Which I managed to do, but only if I don't send an attachment. Can someone help me with the settings on how to send an HTML body and attachment? I used the Mail Service SL Example project, the only thing I added in the "Main_PRG" code in line 51 under "SendMailFB" is "mimeType := 1". I'm using Library: Mail Service SL Library Documentation Company: CODESYS Title: Mail Service SL Version: 1.13.0.0 Categories: Application|Utils Namespace: MAIL Author: CODESYS Development GmbH Placeholder: Mail_Service_SL
Last updated: 2026-04-14

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 rik123456 on Alarmmanagement – Dynamic Alarm List ^{CODESYS Forge talk (Post)}
Hi, I had a question about alarm management in the CODESYS visualization. I am currently investigating to what extent the alarm visualization can be built dynamically. In my program, I have developed a motor block that is used for multiple motors. When the emergency stop of one or more motors is activated, the corresponding motors are displayed in the alarm list (see image). This works quite well. I achieved this by linking variables to a latch, after which a piece of code displays the motors that are in emergency stop. My question is: do I need to create a separate latch for each motor or can I use a single latch to display multiple alarms of a motor underneath each other? This would then look like this: Time…: M1 Emergency Stop Active Time…: M4 Emergency Stop Active
Last updated: 2026-04-20

Post by alexgooi on Network variable stops sending ^{CODESYS Forge talk (Post)}
Hi Reinier, What usually works for me is settings it up in the following way: In the sender block make sure that the list identifier is unique for the whole installation (this is only relevant when you have multiple senders in 1 network). When you are linking the NVL to a file make sure that the path to this file doesn't change. In my experience the NVL stops working when you change the working directory and afterwards open the NVL in de Codesys IDE. If this doesn’t apply to you application, you could also try to change the port number, maybe there is an other process making use of port 1202. Kind regards Alex
Last updated: 2026-04-22

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 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 alex-n on Problem with keeping up the distance between two axes ^{CODESYS Forge talk (Post)}
Hello. I have a task to synchronize the movement of two axes and maintain the distance between them. First axe makes equal steps by trigger using MC_MoveRelative function. The second one is standstill and after another signal should catch up the first one from its position to a specified distance and keep it. I've tried to use MC_Phasing and mostly it works. Second axis catches up the first and starts make step with it. But in one moment this axis can crash into the first and there is no clear connection as to why this is happening. It can work correct for a day or for a week.
Last updated: 2026-06-04

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 wollvieh on Raspberry Pi Runtime 4.22.0.0 vs. 4.20.0.0 I2C Bus not running... ^{CODESYS Forge talk (Post)}
Hi together, -> I updated my raspberry pi3 with runtime 4.22.0.0, and then no I2C device is running. -> when i switch back to runtime 4.20.0.0 all I2C devices running. what have i additionally to do, so that I2C Bus is although running in the newest Runtime Version 4.22.0.0 ? I did read something about security changes on the new runtime Version, but i do not clear understand, what i have do do, do bring the I2C Bus to live again ? ... there should be a Dialog in the Runtime Deploy tool, (see the link below) , but im my Codesys Version 3.5.22.40 i could not find this "Change Service User button" ... https://content.helpme-codesys.com/en/CODESYS%20Control/_rtsl_linux_dedicated_user.html strange things happen, so what to do, any Ideas appreciated !
Last updated: 2026-10-15

Post by rkohser on Scripted Git clone / checkout being blocked by "Project Environment" popup ^{CODESYS Forge talk (Post)}
Hi, I am trying to build a CI/CD pipeline around our codesys projects. The only entry point if the git url and branch, as we do not put our project file under source control, so we needed to find a way to git clone from the python scripting engine. This is currently how we do this : system.commands["Git", "Clone"].execute( "ProjectLocation=" + project_dir, "ProjectName=" + project_file_name, "RemoteUrl=" + project_git_remote_url, "GitProjectStoragePath=" + project_git_local_dir, ) system.commands["Git", "Checkout", "Branch"].execute( "PrimaryProjectHandle=0", "BranchName=origin/" + project_git_branch ) This works fine, except that, depending on the environment and the project, the "Project Environment" popup gets displayed to suggest for some updates, and waits for a user interaction, even with the "--noUI" flag injected as parameter. I investigated the VersionUpdateFlags, but the problem is that the git clone is an atomic operation that clones and directly opens the generated project without the possibility to inject any updateFlags argument (only used in the ScripProjects.open() function. I also tried to simulate some keyboard events acknowledge the window from script but I did not find the right location for the SendKeys statement, I think before the git clone call is too early and after is too late. So I am wondering if there would be some other way to do that. Is there some more proper scripting api for the git add on ? Is there a global configuration of the VersionUpdateFlags that would allow the popup to be disabled outside from any project context ? Is there some way to automatically acknowledge this kind of messages in a "--noUI" mode ? What do you suggest ? Thanks for your help, Roland Edit : I managed to solve my problem by following these steps in my pipeline : - create a template of a project and opt file preconfigured not to open the popup - open this project - initialize an empty git repo - add the remote, fetch and checkout the needed branch -> no popup is displayed, hourra Edit2 : The initial question was raised on a CODESYS V3.5 SP18 Patch 2 profile. Since CODESYS 3.5.19.30 a scripting API is available for Codesys Git that allows cloning a project with the support of VersionUpdateFlags https://content.helpme-codesys.com/en/CODESYS%20Git/_git_using_scripting.html
Last updated: 2024-01-19

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 fless on No source code available for profinet library ^{CODESYS Forge talk (Post)}
looks like you are running in a bug in the newest version 4.4.0 of the profinet library or the new library triggers a bug in your code. did you update your profinet device too? you could try to downgrade to an older version of the library. via library manager - placeholders, double click Profinet 4.4.0 in the library column and choose an older version.
Last updated: 2023-08-23

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