Post by seler on Custom button with output status ^{CODESYS Forge talk (Post)}
I did some work around by adding IN switch on top of OUT bulb picture(SwitchImage) and setting IN switch button to invisible but this is not quite elegant. How to combine it to one visu element?
Last updated: 2025-11-20

Post by tristan on Textfield display problem ^{CODESYS Forge talk (Post)}
Hello Tim, I am using CODESYS Visu V4.8.1.0. It works when I turn off the "Support client animation and overlay of native elements". But if I do that, dialog box moving and other options are also disabled so it is a bit problematic. Thank you for helping.
Last updated: 2025-11-27

Post by mr-ege on Error: C0138: No matching 'FB_Init' method found for instantiation of VisuClientObjectMgr ^{CODESYS Forge talk (Post)}
I have tried these steps, but it still does not work. What should I do? I'm stuck on this error. I cannot design the HMI, I need help.
Last updated: 2025-11-27

Post by somlioy on Non-formal invocation of function blocks in CODESYS ^{CODESYS Forge talk (Post)}
No that is not possible for function blocks, although it is possible to that with methods and functions as you see in your second pic.
Last updated: 2025-12-05

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 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 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 mariussandu on OPC-UA ^{CODESYS Forge talk (Post)}
I updated the runtime to CODESYS Control for Raspberry Pi SL 4.22.0.0, SDK 3.5.22.30. Same outcome as before. Now I study if migrating to PFC100 is ok or to change to Siemens PLC because of this issue.
Last updated: 2026-09-07

Post by mariussandu on OPC-UA ^{CODESYS Forge talk (Post)}
I updated the runtime to CODESYS Control for Raspberry Pi SL 4.22.0.0, SDK 3.5.22.30. Same outcome as before. Now I study if migrating to PFC100 is ok or to change to Siemens PLC because of this issue.
Last updated: 2026-09-07

Post by reinier-geers on Error ambigiusname ^{CODESYS Forge talk (Post)}
In visu i have a Led. I only changed the output. Then i get Ambigius use of name Tpara. But it doesnt show where. See screen shot
Last updated: 2026-01-20

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 gatto on Two licenses have to be installed forgot to enable one license ^{CODESYS Forge talk (Post)}
Hi. What type of PLC do you have? What activation method do you use? What license ticket did you purchase and want to activate? Can you describe the process you followed step by step?
Last updated: 2026-02-02

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 risele on AI + Programming ^{CODESYS Forge talk (Post)}
It's already fine to use, with help of exporting/importing as PLC_Open, at least CODEX is good in editing directly at XML and/or providing changes description separately.
Last updated: 2026-02-13

Post by pernockham on Unable to deploy "Control for Linux SL 4.18.0.0" ^{CODESYS Forge talk (Post)}
Downloaded and installed edge gateway 4.19.0.0. Unfortunately same behavior: "Control for Linux SL" NOT shown in drop lists on either "Deployment" Tab of tool "Deploy Control SL", or as "installed packages" on "Operation" tab (only "CODESYS Edge Gateway for linux" is shown).
Last updated: 2026-02-16

Post by pernockham on Unable to deploy "Control for Linux SL 4.18.0.0" ^{CODESYS Forge talk (Post)}
Am I alone in this? Is this a known fault? Should I look for the reason of the lacking update option for "Control for linux SL" in my system or is it a potential fault in the codesys system?
Last updated: 2026-02-17

Post by pernockham on Gateway in China - "Gateway not connected" ^{CODESYS Forge talk (Post)}
Finally sorted (unit in China). The problem was related to dns-setting of the gateway/host. Connection (also inside china) tested/works.
Last updated: 2026-03-18

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 reinier-geers on Resize and position Numpad/Keypad ^{CODESYS Forge talk (Post)}
HI, I download the scale dialog. But cant find were i can Set the size of the dialogs. only the position. I want the diolog bigger
Last updated: 2026-04-15

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 brouwyka on JSONByteArrayWriter string result incorrect order ^{CODESYS Forge talk (Post)}
Hello everybody! We are currently working on implementing a call to an API that tracks data sent to it through a JSON body. Versions: CODESYS V3.5 SP19 Patch 7 using IIOT Libraries SL license, specifically JSON Utilities SL version 1.13.0.0. For simplicity, let's say we want to construct the following JSON body for our request (simplified to just 1 key-value pair in each of the array objects to keep things shorter, but we'd have multiple fields in each in reality): { "id": "machine_1", "readings": [ { "temp_mid": 153.8 }, { "temp_mid": 98.3 } ], "status": "RUNNING" } However, our "readings" data is added over time, not in creation, so calls to the builder would be somewhat out of order. In a simplified manner, our calls would look like this: jsonBuilder(pJsonData := JsonData, diRootObj => rootJsonIndex); // rootJsonIndex = 0. // Set "id" at root JSON object. wsValue := "machine_1"; jsonBuilder.SetKeyWithValue("id", wsValue, diParentIndex := rootJsonIndex); // JSONData KEY: diParentIndex = 0 & diIndex = 1, VALUE: diParentIndex = 1 & diIndex = 2. // ... Time passes, we get our first reading to add ... // The "readings" array does not exist yet, so we make it first at root JSON object before adding our first reading. readingsJsonArrayIndex := jsonBuilder.SetKeyWithArray("readings", diParentIndex := rootJsonIndex); // JSONData KEY: diParentIndex = 0 & diIndex = 3, VALUE: diParentIndex = 3 & diIndex = 4. // Then add the first reading, for which we first have to make an object. readingsJsonArrayObjectIndex := jsonBuilder.SetObject(diParentIndex := readingsJsonArrayIndex); // JSONData OBJECT: diParentIndex = 4 & diIndex = 5. // And then we add the field(s) in the object for the first reading. // NOTE the use of `readingsJsonArrayObjectIndex` so we set the field(s) in the first object in the array. rValue := 153.8; jsonBuilder.SetKeyWithValue("temp_mid", wsValue, diParentIndex := readingsJsonArrayObjectIndex); // JSONData KEY: diParentIndex = 5 & diIndex = 6, VALUE: diParentIndex = 6 & diIndex = 7. // ... Time passes, we want to add another root-JSON-level field ... // Set "status" at root JSON object. wsValue := "RUNNING"; jsonBuilder.SetKeyWithValue("status", wsValue, diParentIndex := rootJsonIndex); // JSONData KEY: diParentIndex = 0 & diIndex = 8, VALUE: diParentIndex = 8 & diIndex = 9. // ... Time passes, we want to add a second reading ... // "readings" array exists, so add the second reading, but first we have to make another object. // NOTE the re-use of the earlier stored `readingsJsonArrayIndex`, so we add the new object to that previously created array. readingsJsonArrayObjectIndex := jsonBuilder.SetObject(diParentIndex := readingsJsonArrayIndex); // JSONData OBJECT: diParentIndex = 4 & diIndex = 10. // And then we add the field(s) in the object for the first reading. // NOTE the use of `readingsJsonArrayObjectIndex` so we set the field(s) in the SECOND(, new) object in the array. rValue := 98.3; jsonBuilder.SetKeyWithValue("temp_mid", wsValue, diParentIndex := rootJsonIndex); // JSONData KEY: diParentIndex = 10 & diIndex = 11, VALUE: diParentIndex = 11 & diIndex = 12. // ... Finally, we want to send to the API, so we must convert the builder to data the client accepts as a body ... xTestWriteToJsonArray := TRUE; jsonArrayWriter( xExecute := xTestWriteToJsonArray, pwData := ADR(jsonDataString), udiSize := SIZEOF(jsonDataString), jsonData := JsonData^ ); IF jsonArrayWriter.xDone THEN // The writer was successful, the `jsonDataString` VAR should now contain a WString copy of the JSON object from the builder. xTestWriteToJsonArray := FALSE; END_IF We see that the JsonData STRUCT is correctly organised (in terms of the diParentIndex & diIndex set by it for each JsonElement) as we expect, as outlined in my comments in the simplified code above. However, as soon as we pass it to the jsonArrayWriter (which is a JSON.JSONByteArrayWriter), the resulting jsonDataString does not match our expectations, instead coming out like this: { "id": "machine_1", "readings": [ { "temp_mid": 153.8 } ] } { "temp_mid": 98.3 } "status": "RUNNING" The behaviour of the JSONByteArrayWriter thus seems to be the problem here. It does not seem to correctly process the children of JsonElements that are ARRAYs when additions to them are done broken up by additions to the lower level JSON OBJECT they are a part of. We have confirmed this by changing the order of the calls in our example to add both readings before adding the "status", in which case we get our expected outcome. However, in reality this is not possible for us - additions to any of the JSON's objects, arrays or array objects may happen at any time after other fields elsewhere in the JSON have been added. Does anyone know a way around this, a fix, or knows a solution we simply have not found? This same phenomenon was also noted on this forum by user @ryusoup at the end of 2023 (https://forge.codesys.com/forge/talk/Engineering/thread/c45929e2f1/#e27f) and user @mtho in early 2024 (https://forge.codesys.com/forge/talk/Engineering/thread/cd1bb450db/#1292) but both topics received no activity beyond both users' opening posts. Looking through the release notes of all the versions of the JSON Utilities SL library, I also did not see any remarks on resolutions of bugs in this vain. Thanks in advance for the assistance!
Last updated: 2026-06-10

Post by arj3090 on Linux ARM64 Deploy Fail - Index out of range ^{CODESYS Forge talk (Post)}
I used Tools->Deploy Control SL in the IDE that I downloaded yesterday. So I assume it is the latest version. I did a manual install using SSH and it works.
Last updated: 2026-07-01

Post by somlioy on Beckhoff ESI import german text ^{CODESYS Forge talk (Post)}
Solved. Had to explicitly select English inside CODESYS as language instead of system default, which for my case is norwegian... Open Tools → Options → International Settings Set the development-system language to English Restart codesys
Last updated: 2026-07-28

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