Post by hannibal on Codesys Trend - setting Y axis minimum and maximum as variables - error ^{CODESYS Forge talk (Post)}
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 nirav1992 on CNC15_LargeGCode.project BC Axis Issue ^{CODESYS Forge talk (Post)}
I am using CNC15_LargeGCode.project for small G01 segments. sample working ok for XY axis but not getting smooth movement while using BC axis pair instead of XY axis
Last updated: 2026-05-05

Post by chaylak on MC_ReadActualPosition with ST code ^{CODESYS Forge talk (Post)}
hi everyone, i am trying use MC_ReadActualPosition module in ST but i cant do it,( if i use CFC yes i read it) my axis is SoftMotion General Axis Pool->VirtAxisZ [Device: SoftMotion General Axis Pool] codesys V3.5 SP20 program: PROGRAM PLC_PRG VAR VirtAxisZ : AXIS_REF_VIRTUAL_SM3; fbPowerZ : MC_Power; fbReadPos : MC_ReadActualPosition; bEnable : BOOL := TRUE; lrActPos : LREAL; bValid : BOOL; bError : BOOL; fbResetZ : MC_Reset; xZ_Valid : BOOL; xZ_Busy : BOOL; xGlobalPower : BOOL; xGlobalReset : BOOL; xBtnTeachingMode : BOOL; lrGrvZ_OffsetTorque : LREAL := 0.5; lrPulseMmZ : LREAL; rPosFromBlock : LREAL; xZ_IsPowered : BOOL; xZ_PowerError : BOOL; iZ_PowerErrorID : LREAL; rZ_ActualPos : LREAL; lrTargetTorque : LREAL; sZ_ErrorString : STRING; //********** jog fbJogZ : MC_Jog; xJogForward : BOOL; xJogBackward : BOOL; rZ_ActVelocity : REAL; END_VAR fbResetZ( Axis:= VirtAxisZ, Execute:= xGlobalReset); fbPowerZ( Axis:= VirtAxisZ, Enable:= xGlobalPower, bRegulatorOn:= xGlobalPower, bDriveStart:=xGlobalPower , Status=> xZ_IsPowered, Busy=> xZ_Busy, Error=> xZ_PowerError, ErrorID=> iZ_PowerErrorID ); IF xGlobalPower THEN fbJogZ( Axis:= VirtAxisZ, JogForward:= xJogForward, JogBackward:= xJogBackward, Velocity:= 100, Acceleration:= 100, Deceleration:= 100, Jerk:= 1000); END_IF fbReadPos( Axis := VirtAxisZ, Enable := TRUE, Valid => bValid, Position => lrActPos, Error => bError ); IF VirtAxisZ.bError THEN sZ_ErrorString := 'Z Ex err'; ELSIF NOT xZ_IsPowered THEN sZ_ErrorString := 'Z Ex (Power Off)'; ELSE sZ_ErrorString := 'Z Ex Ready'; END_IF IF xBtnTeachingMode THEN lrTargetTorque := lrGrvZ_OffsetTorque; ELSE lrTargetTorque := 0; END_IF VAR_INPUT CFC_Motion: INT; END_VAR
Last updated: 2026-05-15

Post by jroddball79 on PM556-TP-ETH — How to change IP address without overwriting the PLC program? ^{CODESYS Forge talk (Post)}
Hi, I need to change the IP address of an ABB PM556-TP-ETH using ABB Automation Builder. The situation is: I have connectivity to the PLC using the current IP (configured in Communication Settings) Online Login works fine The Network Scan does not detect the PLC IP-Configuration tool shows all fields disabled I don't have the original project source, only an empty project The PLC has no SD card inserted The Online menu does not show an Upload option When I modify the IP in the project and connect, Automation Builder shows: "The PLC configuration needs to be updated. A full PLC download is required" I'm afraid a full download will overwrite the running program. Is there any way to change only the IP address without overwriting the application? I'm also open to solutions using third-party tools, Python scripts, or any other method (DCP protocol, direct TCP communication, etc.) as long as it doesn't overwrite the running application. Thank you
Last updated: 2026-05-19

Post by cm1435 on too much data for the controller ^{CODESYS Forge talk (Post)}
When I download project to ifm CR2530 controller, met the error "too much data for the controller". Actually my project is just 70k Bytes, far from the memory 1M of CR2530. Anybony ever met this problem?
Last updated: 2026-05-30

Post by netprim on Could not save the project: Could not find part of the path ^{CODESYS Forge talk (Post)}
Hi , do you know how to solve the issue?! I am getting " Project could not be saved: The file exists."
Last updated: 2026-06-10

Post by manuknecht on XY Chart causes extremely long cycle in Visu Task ^{CODESYS Forge talk (Post)}
I am using the visualization element "Cartesian XY Chart" in a visualization template within a library to display recorded position values. I managed to configure the chart as desired and it displays the values like it should. A problem occurs when clicking on the chart to move the cursor, zoom or pan. Upon clicking the visualization element for the first time, the task in which the visualization is run spikes to a cycle time of around 5'000 to 15'000 ms (the configured cycle time is 100 ms). Sometimes this even completely crashes the web-visualization. After this very long cycle, the visu task normalizes again and the chart can be interacted with as usual. Another spike in cycle time occurs once the visualization is switched to a frame that does not contain the chart. I did reduce the data array to only a few values and tried changing the update behaviour of the chart, but it did not change the problems I am facing. Did anyone experience a similar issue or even has a solution for this?
Last updated: 2026-06-16

Post by blade on Visualization Object missing from drop-down list... ^{CODESYS Forge talk (Post)}
Hi, For some reason, the Visualisation object is missing from the drop-down list (see the attachment). Does anyone know why it''s missing and how I can fix the problem? Thanks in advance
Last updated: 2026-07-01

Post by shivsrikakolum on Getting SMC_ERROR 34 SMC_AXIS_NOT_READY_FOR_MOTION, while the axis should be ready for motion ^{CODESYS Forge talk (Post)}
how did you manage to get rid of the error. i have set the cycle time to 2000 microsecond but my softaxis is still amber warning
Last updated: 2026-07-07

Post by eschwellinger on codesys installer deletes itself instead of updating ^{CODESYS Forge talk (Post)}
I would try to use: https://store.codesys.com/de/codesys-installer.html this standalone version. Seems if your version out of SP19 setup have some update problem.
Last updated: 2026-08-11

Post by yueqiqi on How to get the instance of a CANopen Master in the Device Tree? ^{CODESYS Forge talk (Post)}
I have been wondering of how to get the instance of a Canopen Master in the device tree, please see the picture in the attachment . Could anyone help me?
Last updated: 2026-09-02

Post by sigbjorn-kleppe on How to display only legend description and not variable name ^{CODESYS Forge talk (Post)}
I seem to have missed the "Display variable name" option in the trend recording. This fixed the issue.
Last updated: 2026-09-24

Post by sigbjorn-kleppe on How to display only legend description and not variable name ^{CODESYS Forge talk (Post)}
I seem to have missed the "Display variable name" option in the trend recording. This fixed the issue.
Last updated: 2026-09-24

Post by caualima on AI + Programming ^{CODESYS Forge talk (Post)}
What do you think about having an AI Agent specialized in ST programming in Codesys? I see this saving hours and hours of work for those who program on a daily basis.
Last updated: 2026-01-24

Post by yoeri on Python script: Launch Codesys, Execute Script, Exit Codesys ^{CODESYS Forge talk (Post)}
For whoever finds this old thread. Instead of System.exit(0), use system.exit(0) without capital 'S', this worked for me. I use these imports from future import print_function import sys import os
Last updated: 2026-02-12

Post by konstantin on CAM Motion Recover after STO ^{CODESYS Forge talk (Post)}
Hello Mr. Seidel, both the master and the slave axis are modulo. Basically the situation is as follows: One master cycle is 100 units. Slave's modulo length is 2000 units. In the CAM table I defined 10 master cycles on X axis - 1000 units and on the Y axis is the slave - 2000 units. Then depending on the master position 0 to 1000 units the slave's position is plotted on the Y axis - 0 to 2000 units. For example, while the master is executing the 3rd cycle i.e. above 200 units, I trigger the STO function of the slave and it stops. The master executed his cycle but the slave was stopped during the execution. How can I set the slave to continue the CAM sequence from the point where it stopped i.e. third cycle of the master? When I reset the slave error and sync again, everyrhing starts from master's 0 position. Best Regards Konstantin Kolev
Last updated: 2026-02-13

Post by altin on No source code available for this object ^{CODESYS Forge talk (Post)}
Hello, I get same error message but pointing at different library. The error appears when im trying to scroll an AlarmTable on a thouch screen (ifm CR1204). Anyone knows what causing this and how to procceed? Many thanks in advance,
Last updated: 2026-02-16

Post by reinier-geers on CODESYS crashes when adding standard OPC UA Information Model to Communication Manager ^{CODESYS Forge talk (Post)}
I only experiance a lot of problems with Version 20 and 21. Version 20 crashes at a online change Version 21 - 5 identical programms in one project. The frist runs. The thirt Crashes. NOt even a screen
Last updated: 2026-03-19

Post by nulltrace on How change Unity-ID in TCP Modbus Slave ^{CODESYS Forge talk (Post)}
Hey Husarz, thanks for your Message, now i understand your Problem, also able to reproduce that. Pls. give me a Short Time to Check some stuff on this, i'll come back to this Topic with news ASAP. Greetings
Last updated: 2026-04-03

Post by skiper on Best practice to reduce CPU load ^{CODESYS Forge talk (Post)}
Hi ! I can't say exactly the best practice you can use to reduce your cpu load but you can use the codesys exemple. https://www.codesys.com/products/visualization/#c3876 Go to the midle of the page and you have a link to download an exemple.
Last updated: 2026-04-21

Post by malie on Issue with library updates ^{CODESYS Forge talk (Post)}
Hello, i got the same problem, but on my site it started with version 3.5.21, with version 3.5.19.7 it worked like a charm. How get the old behavior back? Or how to reload the librarys in an open project/library manually?
Last updated: 2026-04-24

Post by totorovic on Ladder editor bug with 3.5.21.20 ^{CODESYS Forge talk (Post)}
The update via CODESYS Installer fails (admin mode). Anyway I am switching all my POUs from Ladder to ST because Ladder cannot be used like this.
Last updated: 2026-06-02

Post by eschwellinger on Linux ARM64 Deploy Fail - Index out of range ^{CODESYS Forge talk (Post)}
I would check the version of the deloy tool using the CODESYS installer. Sure manually installing works too, but woukd nice to know if there is a problem. Currebt version is 4.21.0.0 of the deploytool.
Last updated: 2026-07-01

Post by lzml on HTML5 visualization controls disabled on CODESYS Control for Linux SL - overlay not supported? ^{CODESYS Forge talk (Post)}
Thanks for the suggestion - I updated everything via the CODESYS Installer and restarted, but I'm still hitting the same error. What I did - Updated via Tools > CODESYS Installer - Visualization system libraries (VisuElems, VisuElemsAlarm, VisuInputs, VisuNativeControl, etc.): 4.7.0.0 -> 4.10.0.0 - CODESYS Control for Linux SL: 4.15.0.0 -> 4.21.0.0 (based on CODESYS SDK 3.5.22.20) - Restarted CODESYS Development System Checked project environment (Project > Project Environment) after restart - Compiler version: 3.5.22.0 - Library versions: all up to date - Visualization Profile: CODESYS Visualization 4.10.0.0 - SoftMotion version: 4.20.2.0 Result: compiling with Device = CODESYS Control for Linux SL still fails with the same error: "Overlay is not supported for your target visualization device." The custom HTML5 control is still disabled/missing from the Toolbox with this Device selected (same as before), and still appears normally when I switch the Device to a Windows target. Is there anything else specific I should check (e.g. a setting on the Device description itself, a different SL package/edition, or is WebVisu overlay for custom HTML5 controls simply not implemented yet for CODESYS Control for Linux SL regardless of package version)? Any pointer appreciated.
Last updated: 2026-08-05

Post by thn-power on Updating OPC UA Core Nodeset on PLS ^{CODESYS Forge talk (Post)}
Hi After much trail and error I think I found the root cause to my OPC UA problem. The problem is that I cannot manage to build and download a program with a a custom OPC UA Information model. We use a Weidmueller WL2000 PLS, but the problem also exsist on the Win V3 PLC. Our custom information model is based on the latest versions of the OPC UA Core Nodeset v 1.05.03 (2023-09-20) and UA/DI nodeset 1.04.0 (2022-11-03) Those nodesets are installed in the Codesys Information Model Repository (3.5.19.6) However, when trying to build I get the following error. [ERROR] Untitled1: Communication Manager [Device: PLC Logic: Application]: The information model http://opcfoundation.org/UA/ is required by http://bos.org/ with a minimal publication date from 15.12.2023 but the device has only a model from 15.09.2021 installed. Probably the information model from 15.09.2021 is missing in the information model repository. [ERROR] Untitled1: Communication Manager [Device: PLC Logic: Application]: The information model http://opcfoundation.org/UA/DI/ is required by http://bos.org/ with a minimal publication date from 03.11.2022 but the device has only a model from 09.03.2021 installed. Probably the information model from 09.03.2021 is missing in the information model repository. Build complete -- 2 errors, 1 warnings : No download possible I think the problem is that the UA Core nodeset is implemented in the PLC firmware (at least that in Siemens S7), and that only includes the "old" nodeset from 2021-09-21 etc. So the question is, how (or if?) can I transfer the new nodeset to the PLS? I have created separate Information models under Communication manager with the newer code nodesets (UA and DI). But it seems that the compiler does not recognize them being excising, neither in the Codesys IDE or on the PLC. Would have guessed that this is a common issue, sine many manufacturers use the latest versions of the OPC UA standard, and that it would be a solution to the problem.
Last updated: 2024-09-20

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