Post by mubeta on Strange problem with the ‘MC_SetPosition’ function ^{CODESYS Forge talk (Post)}
No errors in any condition. The function terminate correctly with the 'done' bit. Now I leave the machine and I don't know when I will be there again. The assumption you made I had considered. The operational limits of the axis are all fit for purpose, and this function should operate virtually without even noticing the motion limits. In fact in practice with the axis at low speed the function corrects any numerical value of the position in the range 0 ... 360° without any problem whatsoever in a single PLC scan cycle.
Last updated: 2025-01-10

Post by alex2 on How to uninstall SVN module ^{CODESYS Forge talk (Post)}
Hello, At work, I use Codesys V3.5 SP10. I wanted to run some tests with the SVN module, which I kept installed (without actually using it in the end). However, when I tried to launch Codesys today, I was informed that a license was missing. I suspect that this is due to the SVN module. Could you tell me how to uninstall it without launching Codesys? (as i cant proprerly start Codesys without the license) Thank you in advance.
Last updated: 2025-02-25

Post by fschuler on No connection to Raspberry at runtime installation ^{CODESYS Forge talk (Post)}
Hi, I try to install the Codesys realtime in a Raspberry PI 3B+. When I click on the installation button I get always the message No connection to device: An established connection was aborted by the server. Raspberry 3B+ with newest raspberry PI OS. Codesys 3.5.15 Patch 1 Codesys Runtime Package 3.5.16.20 SSH is activated. I can login with Putty Ping is possible IP address search is possible Just the installation is not started.
Last updated: 2025-07-23

Post by arwie on Working on exporting/importing projects to PlainText. ^{CODESYS Forge talk (Post)}
To better track project changes in git I created a script that exports the project structure as text files. Textual POUs are stored as text, everything else as XML (with timestamps removed). The file structure is stored under path/to/your.project.txt Git merge will not work, but at least tracking changes is much easier. Script: https://github.com/arwie/controlOS_demo/blob/main/codesys/txtfy.py Example output: https://github.com/arwie/controlOS_demo/tree/main/codesys/controlOS_demo.project.txt
Last updated: 2025-07-24

Post by camjam on BOOL variable in OPC UA and modbus simultaneously ^{CODESYS Forge talk (Post)}
I have come across this. The only way i could get it to work would be to define a word that is also the same address as the Bools. eg %MX600.0 through to %MX600.15 would be individually defined in the variables and them have another variable word defined at %MW300. You still need to break out the word in what ever program you are using to read/write the OPCUA tags.
Last updated: 2025-08-18

Post by timvh on How to change keyboard layout on the virtual keyboard? ^{CODESYS Forge talk (Post)}
Maybe you have the "Devices" tab open(?), but the "templates" are in the POU pool. You can open it from the menu: View - POUs, or if it is already open, select the POUs tab which is normally next to the Devices tab. All objects which are part of a library are in the POU pool, because they should be device independent (at least most of them).
Last updated: 2025-09-18

Post by mg0815 on Codesys Control log "eventbuffer full" ^{CODESYS Forge talk (Post)}
Device: RPI 3b or 3B+ System: Wheezy Codesys: 3.5.16.2 I got the Log: 2023-12-13T00:38:43Z, 0x00000054, 2,6,11, !!!! Warning: Eventbuffer full for app=<app>Application</app>; an inputevent with the tag <tag>128</tag> has been dropped This log happens aroud 10 times a second. Sometimes the controller stopped working any more. What is the reason for this? I will update this controller soon (I hope so, but in the meantime I should at least know hoe to prevent this issue) Mario
Last updated: 2023-12-14

Post by matt-s on HMI Pushbutton/Move Instruction ^{CODESYS Forge talk (Post)}
I have not gotten to the bottom of this yet no. I have double check that the variables are correct linked. When online with the program I can see the button and rung going true for the move instruction, yet it does not change. Forcing the bit in the program does change the value in Groov View. I am kind of at a loss here, especially since the other POU(For the pumps) does the same thing fine.
Last updated: 2024-02-02

Post by stuartjr on Disabling forcing of specific variables ^{CODESYS Forge talk (Post)}
OK.. so maybe I miss understood for how the forcing order works. It seems that the force list is applied at the beginning of every task call (I'm assuming this based on what I am seeing). If I force my variable FALSE and then write it TRUE in a task, then it stays TRUE for that task, but then in the next task it will go back to FALSE.
Last updated: 2024-03-15

Post by mp9876 on Device User Logon ^{CODESYS Forge talk (Post)}
Just adding some info regarding the issue above. Logged onto the project using dev3og5 user (see screenshots); appeared to be ok although when attempting to logon to the device message says 'currently not authorized to perform this operation on the device' (screenshot). If user dev3og5 has same permissions as Owner user; why would it not be authorized. I am at a loss; any assistance would greatly be appreciated. Thank you Mike
Last updated: 2024-03-16

Post by stuartjr on Webvisu IE Page Scroll Bars ^{CODESYS Forge talk (Post)}
Is it possible to get scroll bars to show when displaying a web visualization in V2.3? I've got some big pages that I can scroll around when using the in-built visualization but when they are displayed in IE i can't seem to scroll around. All I can do it drag the window bigger onto my other display to get access to the extra area. I've also tried zooming the page out in IE but this doesn't seem to work at all.
Last updated: 2024-03-28

Post by antonz on OSCAT Scale_r function not working in LD 4.60 works in LAD2 on 3.5.21sp3 ^{CODESYS Forge talk (Post)}
That's what I found as well Shaun. I have seen it at least in versions 3.5.21.1 and 3.5.21.3. There seems to be an issue with the FBD/LD package v4.6.0.0. The workaround proposed by Tim works but needs to be done manually on every code change/addition. For now we manually downgrade the FBD/LD package from v4.6.0.0 down to v4.5.0.0 after installation of CoDeSys. Same as you did. I hope this gets fixed on a next patch.
Last updated: 2025-11-21

Post by nz-dave on *exception* [processorloadwatchdog] occurred in: app=[all], task=[all] ^{CODESYS Forge talk (Post)}
Can anyone shed some light on this issue im having. at random, sometimes days, sometimes weeks or months. i get this error and have to reset the plc. Im using a Weintek HMI with ethernet/ip remote io and vsd. i have tried increasing my task times and watchdogs. and when i view my PLCload in the shell its normally around 3-4%, highest ive ever seen is 7%. Nothing i do seems to help the issue. Could the HMI's Codesys CPU be getting to hot do to high ambient temp?
Last updated: 2026-02-01

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 niloufar on Execution Order of Function Blocks ^{CODESYS Forge talk (Post)}
Hi, Our program incorporates various function blocks and programs written in different languages such as St and SFC. They implement numerous actions and methods using different languages from their function blocks. My question is whether the execution order of function blocks is associated with the programming languages used. I understand that cycle time can be configured in the task configuration, but I'm curious if there is a specific sequence order of execution for function blocks written in different languages. For example, all function blocks in (ST) are executed first, followed by the execution of (SFC). Specifically, when the function is written in (ST) and the action is implemented in (SFC). I modified all function blocks in the main PLC program and configured a task configuration for the main program.
Last updated: 2023-12-13

Post by ewi04 on How to upload application file to remote controller (offline) ? ^{CODESYS Forge talk (Post)}
Thank you very much for your time and replay! Sounds like a good idea. Unfortunately, I have no other option to run the code from the running plc. So, I can’t stop any services. If anyone has the same problem, I've gotten a little closer to understanding it: Sometimes the copied files are empty after the restart. The update code checks if there are any empty files. Before I turn off the device, everything is okay. But after starting, some files are suddenly empty and that cause the problems. I don't know why this happens.
Last updated: 2024-02-16

Post by jens on Modbus tcp - channel ^{CODESYS Forge talk (Post)}
Help wanted This is the first time i'm doing a Modbus Tcp project. I have some VLT with a extension module MCA-122. i'm currently unable to write to the VLT slave, but i can read from status word parameter=1603 and address := 16029 where the address is calculated from parameter is ((id x 10)-1). in the manual the functions that are supported are 3 hex, 6 hex, 10 hex, b hex and 11 hex. read holdin registers, write single register, write multiple registers, get comm. event counter, report slave id. i'm only using the Modbus Slave Channel is this wrong when trying to write to the vlt ?
Last updated: 2024-06-13

Post by mondinmr on COL.IMap2 and HashTableFactory cause frequent Access Violation ^{CODESYS Forge talk (Post)}
Good morning, I’ve been using the Collection library for a long time, mostly with Stack, LinkedList, and List. From your examples I was able to manage the different factories, even for custom elements. Now I need a hashtable, but with this object I’m running into a lot of random access violations. If I append something inside FB_Init after constructing the hashtable, it crashes, even though the list was already created. If I only create the hashtable in FB_Init and append afterwards, it usually works. I don’t understand the meaning of the dispose call in this code: pSlave := ADR(slave); uSlave := TO_ULINT(pSlave); iKey := fKey.Create(uSlave); IF hash.CountKeys() = 0 THEN Service.logger.appendLog('Filling hashtable', 'HashManager', AdvLogType.AdvDebugMsg); ok := FALSE; ELSE eError := hash.ContainsKey(iKey, xResult => ok); END_IF IF NOT ok THEN pI := __NEW(UINT); iVal := fKey.Create(TO_ULINT(pI)); Service.logger.appendLog(CONCAT('New slave', TO_STRING(uSlave)), 'HashManager', AdvLogType.AdvDebugMsg); hash.AddKeyValuePair(iKey, iVal); appendNewSlave := pI; ELSE eError := hash.GetElementByKey(iKey, itfValue => iElem); xResult := __QUERYINTERFACE(iKey, itfIInstance); IF xResult THEN itfIInstance.Dispose(); END_IF IF eError <> COL.COLLECTION_ERROR.NO_ERROR THEN Service.logger.appendLog(CONCAT('ERROR ', TO_STRING(eError)), 'HashManager', AdvLogType.AdvCriticalMsg); appendNewSlave := nullptr; RETURN; END_IF __QUERYINTERFACE(iElem, iVal); {warning disable C0033} pI := TO___UXINT(iVal.UlintValue); {warning restore C0033} appendNewSlave := pI; END_IF Without the dispose call, every second cold reset crashes immediately when I try to access iVal, even if eError doesn’t report any error. With the dispose call, the cold reset issue disappears, but I get other problems: a) If I start the runtime using systemctl start codesyscontrol, it crashes at IF hash.CountKeys() = 0 THEN b) If I delete the files in PlcLogic and download again, it works and survives multiple cold resets. But as soon as I run systemctl restart codesyscontrol, everything gets corrupted again and it starts crashing at that point. FUNCTION_BLOCK SlaveMapCounter VAR hash : COL.IMap2; eError : COL.COLLECTION_ERROR; END_VAR In its FB_Init I create it: METHOD FB_Init: BOOL VAR_INPUT bInitRetains: BOOL; // TRUE: retain variables are initialized (reset warm / reset cold) bInCopyCode: BOOL; // TRUE: the instance will be copied to the copy code afterward (online change) END_VAR VAR hF : COL.HashTableFactory; END_VAR hash := hF.Create(256); In another FB I instantiate it statically: FUNCTION_BLOCK ABSTRACT AbstractServoEthercatController EXTENDS AbstractServoController VAR_STAT hashSlaves : SlaveMapCounter; END_VAR VAR field : REFERENCE TO ADVAbstractFieldUnitEthercatCia402; initCnt : REFERENCE TO UINT; END_VAR The append method is the one shown above, and I call it after the runtime has started. The accesses are performed by a single task, and in any case I’m working on an isolated single core. I’ve tried everything, moving the create, the instances, and all the rest several times, but nothing seems to work. I’d like to point out that these FBs are part of our own library, which is used in many applications.
Last updated: 2025-09-11

Post by antonz on CoDeSys v3.5: creating libraries for both 32-bit and 64-bit controllers ^{CODESYS Forge talk (Post)}
Looking for thoughts on creating libraries that can be used on both 32-bit and 64-bit controllers. We are currently writing software in CoDeSys for both target types and will continu to do so for the near future. Projects are always unique, no straight forward copy/paste, yet there is enough similarity between them to use libraries for recurring logic. I do not want to create and maintain twice for both platforms if this is not absolutely necessary. I am aware of useful datatypes like __XWORD, __XINT, __UXINT. Still looking for more information and/or sample code for portable pointer arithmetic. In addition to that: how should one go about when creating and working with compiled libraries? Would I need to compile the same lib twice, once for 32-bit targets once for 64-bit targets? I would end up with two different libs with the same namespace, which does not sound elegant to me. Note: I did not intentionally make the previous paragraph bold. The forge forum software seems to do this automatically upon insertion of a word which starts with two underscores, e.g. __XWORD (yeah, here we go again :) )
Last updated: 2025-08-25

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Last updated: 2024-10-26

Post by mikek10 on Some 'pathetic' errors in SoftMotion program ^{CODESYS Forge talk (Post)}
I was answering your last paragraph Meanwhile, I would like to understand why the motion FB instances must still be called even after the Execute is set to FALSE, especially in view of the fact that the next instruction is programmed to abort the previous one, with BufferMode set to 'Aborting'. All these unnecessary FB calls are an unnecessary overhead on the CPU anyway. Is there any precise rule about when to cease calling the various instances? (It should precisely be the 'done' status that says this one has finished its work).
Last updated: 2024-07-18

Post by adam on Get/Set I/O Address Mapping of DeviceObjects in python Script ^{CODESYS Forge talk (Post)}
I want to cancel the automatic address allocation for all IO mappings. If I directly set the automatic_iec_address in class ScriptIoMapping to False, the address becomes None. So I reset manual_iec_address with itselfs value. It only work with the Input IOMapping . For output, it reports an error: "Invalid address: The channel type 'Output' requires address type '%Q'." I checked the description file ,both accessRight are total same. Does anyone know what causes this?
Last updated: 2025-11-14

Post by transmin01 on EtherCat Master cannot open network adaptor on Win10x64 target ^{CODESYS Forge talk (Post)}
Hi, If I utilise an EtherCat master with a Beckhoff EK1100 coupler on a Win10x64 target I get a "Network Adaptor could not be opened" error. I have tried this on both a VM and a physical PC. Has anyone experienced this issue? Regards Trevor
Last updated: 2023-09-14

Post by ewi04 on Recipe Manager - RecipeManCommands, load & write wrong values, Bug? ^{CODESYS Forge talk (Post)}
The individual structures were declared in a separate global variable list on a trial basis. But even this did not change the behavior. A total of 1667 variables are processed in a recipe. A reduction (e.g. saving only the first three drive parameter sets) also brought no change.
Last updated: 2023-11-15

Post by trusty-squire on CNC - How to manipulate SMC_GeoInfo objects ^{CODESYS Forge talk (Post)}
Sometimes you just need to pose a question on a forum and re-read it to get clarity. pGeoInfo := SMC_GetObj(poq:=ADR(fbCncInterpreter.poqDataOut), n:=1); This won't work, I'm providing a pointer to a pointer, as poqDataOut is already a pointer! I just need to remove the ADR() and it works. pGeoInfo := SMC_GetObj(poq:=fbCncInterpreter.poqDataOut, n:=1);
Last updated: 2024-07-26

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