Post by salvadegianluca on List files in a directory with SysDiropen And SysDirRead ^{CODESYS Forge talk (Post)}
Good morning; I'm facing an issue that seems being caused by the library itself. I'm trying to create the list of all the files that are stored inside a psecific directory. Unluckily the first file is allways hidden. VAR CONSTANT arysEmptyArray:ARRAY[iArrayMinDimension..iArrayMAXDimension] OF STRING := [(iArrayMAXDimension - iArrayMinDimension)('')]; iArrayMinDimension:INT := 1; iArrayMAXDimension:INT := 99; END_VAR VAR_INPUT sDirectoryToInspect:STRING; sSearchFilter:STRING; END_VAR VAR_IN_OUT xCheckFileInsideDirectory:BOOL; END_VAR VAR arysListOfFoundFiles:ARRAY[iArrayMinDimension..iArrayMAXDimension] OF STRING; sNullString:STRING; iNullIndex:INT := 0; libInfoAboutThePath:DirInfo; libResultOfThePathMonitoring:CmpErrors.RTS_IEC_RESULT; libInstanceToMonitorThePath:CmpErrors.RTS_IEC_HANDLE; sEntityToSearch:STRING; dMaxEntityDimension:DINT := SIZEOF(sEntityToSearch); libFileInfo:DirInfo; sFilteredFileName:STRING; iIndexToScrollArrays:INT; END_VAR IF xCheckFileInsideDirectory THEN arysListOfFoundFiles:=arysEmptyArray; iIndexToScrollArrays:=iArrayMinDimension; libInstanceToMonitorThePath:= SysDirOpen(szDir:= sDirectoryToInspect,szDirEntry:=sNullString,diMaxDirEntry:= iNullIndex,pDirInfo:= ADR(libInfoAboutThePath),pResult:= ADR(libResultOfThePathMonitoring)); WHILE libResultOfThePathMonitoring = Errors.ERR_OK AND iIndexToScrollArrays <= iArrayMAXDimension DO sEntityToSearch:= ''; libResultOfThePathMonitoring:=SysDirRead(hDir:=libInstanceToMonitorThePath,szDirEntry:=sEntityToSearch,diMaxDirEntry:=dMaxEntityDimension,pDirInfo:=ADR(libFileInfo)); sFilteredFileName:= FUN_06_00_FindItemInString_0(sFilter:=sSearchFilter,sSource:=sEntityToSearch); IF sFilteredFileName <> '' THEN arysListOfFoundFiles[iIndexToScrollArrays]:=sFilteredFileName; iIndexToScrollArrays:=iIndexToScrollArrays + 1; END_IF IF libResultOfThePathMonitoring <> Errors.ERR_OK THEN libResultOfThePathMonitoring:= Errors.ERR_OK; END_IF END_WHILE libResultOfThePathMonitoring:=SysDirClose(hDir:= libInstanceToMonitorThePath); xCheckFileInsideDirectory:=FALSE; END_IF How is possible to solve this issue? Any known work around?
Last updated: 2024-09-17

Post by rossanoparis on Clarifications regarding the appropriate runtime system to use ^{CODESYS Forge talk (Post)}
Hallo all I would appreciate some clarifications regarding the appropriate runtime system to use. I've been using 'KUNBUS CPUs' and 'CODESYS Control for Raspberry Pi MC SL' for the last 4 years. Recently, there have been some changes in the CODESYS licensing policy. [ https://store.codesys.com/en/howto_applicationbasedlicenses ] My questions are mainly two: 1) If I need to start a new project using 'KUNBUS CPUs', which is the correct runtime system to use. 2) Old projects built using 'CODESYS Control for Raspberry Pi MC SL' should be updated to another RT system? Current RT systems ... a)CODESYS Control for Raspberry Pi MC SL b)CODESYS Control for Linux ARM SL c)CODESYS Virtual Control SL May I count on receiving an explanation to understand the differences among the runtime systems listed above? A detailed and well-organized answer would be greatly appreciated. Kind regards Rossano
Last updated: 2024-09-23

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 etienneneu on Trend x-axis description incorrect display ^{CODESYS Forge talk (Post)}
Hello everyone, maybe someone can help me with the following problem. I wanted to insert a trend element in my visualization. The problem is that I have set fixed fonts with a scaling of 1.5 for the individual languages via the visualization manager. This setting means that I have this scaling in every element, which has been quite comfortable so far because I didn't have to set the individual properties in the text fields. But in the trend element, even if I select other font sizes or fonts in the element itself, this font is also overwritten and I get a label on the x-axis that is no longer displayed correctly. Is there a way to prevent the overwriting of the font properties in this element or similar behavior? I mean, I could change the font size of each element manually, but the Visu app is a bit larger and it would be easier to have another option. Best regards Etienne
Last updated: 2024-11-28

Post by timvh on STRING conversions to DWORD ^{CODESYS Forge talk (Post)}
I guess that the printer expects to receive an array of byte values. So where it is described that it expects to receive: Hercules String : 1B4F513030311B7532626C61636B04 it actually expects to receive an array of bytes with the values 1B,4F,51,30,30, etc. So what you can do is create an array of bytes and assign the byte value to each item in the array: VAR abyToSend : ARRAY[0..99] OF BYTE; END_VAR abyToSend[0] := 16#1B; // ASCII Escape character, hexadecimal representation uses 16# as prefix abyToSend[1] := 16#4F; // ASCII 'O' abyToSend[2] := 16#51; // ASCII 'Q' abyToSend[3] := 16#30; // ASCII '0' // you can do the rest yourself // maybe could be created a lot smarter, but gives you an indication how to handle this. Then with the serial communication (or TCP/IP?) you can send a message with the reference to the array (abyToSend) and the number of bytes to send (15 bytes for the string you gave as example).
Last updated: 2025-02-02

Post by timvh on Active alarm access in ST ^{CODESYS Forge talk (Post)}
See https://forge.codesys.com/forge/talk/Engineering/thread/280fdf4806/#9fe5 And https://forge.codesys.com/prj/codesys-example/alarm-manager/home/Home/ The application should contain: - an FB which implements AlarmManager.IAlarmFilterCriteria (see example - FB_AlarmFilterCriteria) - an FB which implements AlarmManager.IAlarmManagerClient (see example - FB_AlarmManagerClient) Then register the client and get the information through this client. VAR xInit : BOOL := TRUE; udiResult : UDINT; fbAlarmFilterCriteriaAll : FB_AlarmFilterCriteria; fbAlarmManagerClientAll : FB_AlarmManagerClient; itfAlarmManagerClientAll : IAlarmManagerClient := fbAlarmManagerClientAll; xAlarm1 : BOOL; xAlarm2 : BOOL; xWarning : BOOL; iNrOfAlarmsInAlarmList : INT; iNrOfActiveAlarmsInAlarmList : INT; paitfAlarm: POINTER TO ARRAY [0..0] OF AlarmManager.IAlarm; iAlarmIndex : INT; eAlarmState: AlarmManager.AlarmState; END_VAR IF xInit THEN xInit := FALSE; fbAlarmManagerClientAll.m_itfAlarmFilterCriteria := fbAlarmFilterCriteriaAll; // register alarm client to get updated about alarm status / changes udiResult := AlarmManager.g_AlarmHandler.RegisterClient(itfAlarmManagerClientAll, 0, 0); END_IF // Polling the number of alarms udiResult := AlarmManager.g_AlarmHandler.GetActiveAlarms(itfAlarmManagerClientAll, parritfActiveAlarms => paitfAlarm, iCountActiveAlarms => iNrOfAlarmsInAlarmList); iAlarmIndex := 0; iNrOfActiveAlarmsInAlarmList := 0; WHILE iAlarmIndex < iNrOfAlarmsInAlarmList DO eAlarmState := paitfAlarm^[iAlarmIndex].GetState(); IF eAlarmState = AlarmManager.AlarmState.Active OR eAlarmState = AlarmManager.AlarmState.ActiveAcknowledged THEN iNrOfActiveAlarmsInAlarmList := iNrOfActiveAlarmsInAlarmList + 1; END_IF iAlarmIndex := iAlarmIndex + 1; END_WHILE
Last updated: 2025-04-23

Post by mondinmr on Unexpected behavior in cyclic encoder read method during INT overflow (wrap-around) ^{CODESYS Forge talk (Post)}
Hi everyone, I’m investigating a potential issue with a cyclic method we use for reading incremental encoders in our libraries. I’ve come across two implementations that, at first glance, appear to perform the same operation: motionUnit.vlPositionActualValue is UINT due strange encoder type. Version A METHOD PROTECTED cyclicReadField VAR_INST actPosFieldOld: INT; rI: INT; delta: INT; END_VAR rI := TO_INT(motionUnit.vlPositionActualValue); delta := rI - actPosFieldOld; m_actPosRaw := m_actPosRaw + TO_LREAL(delta); actPosFieldOld := rI; IF settings.velocityFeebackMapped THEN m_actVelRaw := TO_LREAL(motionUnit.velocityActualValue); END_IF Version B METHOD PROTECTED cyclicReadField VAR_INST actPosFieldOld: INT; END_VAR m_actPosRaw := m_actPosRaw + TO_LREAL(TO_INT(motionUnit.vlPositionActualValue) - actPosFieldOld); actPosFieldOld := TO_INT(motionUnit.vlPositionActualValue); IF settings.velocityFeebackMapped THEN m_actVelRaw := TO_LREAL(motionUnit.velocityActualValue); END_IF Both use INT and the same delta logic, so they seem equivalent. However, when an overflow (wrap-around) occurs, version A continues correctly as expected, while version B unexpectedly resets to -32768 without a clear reason. Has anyone experienced similar behavior or can shed light on what might be happening here? It almost seems as if the cast to LREAL is being applied before the calculation — but that would be illogical and potentially very dangerous in many situations! Thanks!
Last updated: 2025-05-13

Post by jy77812 on MC_MoveCircularAbsolute Using Help ^{CODESYS Forge talk (Post)}
Dear People I’m trying to draw a circle using MC_MoveCircularAbsolute, but I keep encountering an error. The error message is SMC_CP_CIRCLE_CENTER_NOT_ON_BISECTOR. What I’m trying to do is simply draw a circle with a diameter of 20, starting from the point X=0, Y=0. I’ve set CircMode to center. It seems like a simple task, but the error keeps occurring, and it’s giving me a headache. I’d appreciate your help. I’ve also attached the program, so please provide any advice you can. I want to use the mode as the center. I've tried changing multiple coordinates and it won't run. Please help. sample stCirculAuxPoint.c.X := 20; stCirculAuxPoint.c.Y := 10; stCirculEndPoint.c.X := 20; stCirculEndPoint.c.Y := 30; fbMoveCircularAbsolute( AxisGroup := AxisGroup, Execute := xGroupCirculEx, CircMode := SMC_CIRC_MODE.CENTER, AuxPoint := stCirculAuxPoint, EndPoint := stCirculEndPoint, PathChoice := 0, Velocity := 50, Acceleration := 50, Deceleration := 50, Jerk := 50, CoordSystem := SMC_COORD_SYSTEM.MCS, BufferMode := 0, TransitionMode := 0, TransitionParameter := , OrientationMode := , VelFactor := , AccFactor := , JerkFactor := , TorqueFactor := , Name := , Done => , Busy => , Active => , CommandAborted => , CommandAccepted => , Error => , ErrorID => , MovementId => );
Last updated: 2025-06-04

Post by erictur on CODESYS Control for Linux ARM SL (32 bit) on Moxa UC-3100 IPC ^{CODESYS Forge talk (Post)}
UC3100 comes with Arm Cortex-A8 1 GHz and belongs to Moxa Industrial Linux 1 (Debian 9) for Arm-based Computers. I tried to install the CODESYS Control for Linux ARM SL (32 bit) on Moxa UC-3100 IPC. Unfortunately, the Third-party requirements: - libc >= 2.27 (required by CodeMeter Runtime) of the CODESYS Control for Linux ARM SL cannot be met on the Debian 9, which comes with glibc 2.24. I read the post by @johnlee (Getting Start with Codesys Control for Linux SL) (https://forge.codesys.com/forge/talk/Runtime/thread/0a515ced3f/). Where he discusses installation of CODESYS Control for Linux ARM SL on Debian 9. There was CODESYS Linux runtime v3.5.14 availble and it was successfully intalled on the Debian 9. However, the CODESYS Store has the oldest version V4.1.0.0 32 bit available. There is no way to find the CODESYS Linux runtime v3.5.14. So is there any work around for this? Or I cannot install the CODESYS Runtime on any of the Moxa IPCs based on the Moxa Industrial Linux 1 (Debian 9)?
Last updated: 2025-07-10

Post by ph0010421 on How to create a stopwatch? ^{CODESYS Forge talk (Post)}
Do you need an 'hours-run' counter? And 1 second resolution is ok? I think you're over-thinking it. (The task time needs to be < 1second) Have a look at the LAD... Then, the time in seconds can be made into hh:mm:ss with this FUNction Declarations: FUNCTION funSecondsToStringTime: string VAR_INPUT InSeconds: UDINT; END_VAR VAR AsString: STRING; Minutes: UDINT; Hours: UDINT; Seconds: UDINT; MinutesAsString: STRING(2); HoursAsString: STRING(2); SecondsAsString: STRING(2); END_VAR and the code: Hours := InSeconds / 60 / 60; //Derive hours Minutes := (InSeconds - (Hours * 60 * 60)) / 60; //Derive minutes Seconds := InSeconds - ((Hours * 60 * 60) + (Minutes * 60));//Derive seconds HoursAsString := UDINT_TO_STRING(Hours); MinutesAsString := UDINT_TO_STRING(Minutes); SecondsAsString := UDINT_TO_STRING(Seconds); IF LEN(HoursAsString) = 1 THEN HoursAsString := CONCAT('0',HoursAsString); END_IF; IF LEN(MinutesAsString) = 1 THEN MinutesAsString := CONCAT('0',MinutesAsString); END_IF; IF LEN(SecondsAsString) = 1 THEN SecondsAsString := CONCAT('0',SecondsAsString); END_IF; AsString := CONCAT(HoursAsString, ':'); //assemble string AsString := CONCAT(AsString,MinutesAsString); AsString := CONCAT(AsString,':'); AsString := CONCAT(AsString, SecondsAsString); funSecondsToStringTime := AsString;
Last updated: 2023-12-08

Post by chalk on No source code available ^{CODESYS Forge talk (Post)}
Hello, This is my first time using Codesys, I am trying to add EtherNetIP communication to a Raspberry PI. I’ve added the EtherNetIP Adapter configured the network setting and added some modules to the pi but when I download the project it generates the following error: “There is no source code available for the object because it is in the compiled library ‘cip object, 4.5.1.0 (3s – smart software solution gmbh)’. Do you want to browse for the original library in order to display the source code? There are 2 errors in the log which are: SOURCEPOSITION App=[Application] area=3, offset=332760 EXCEPTION [Application] occurred: App=[Application], Task=[ENIPAdapterServiceTask] I can’t for the life of me work out how to get around this. I can’t find the source code anywhere or any information regarding this error. I’m using Codesys V3.5 SP19 Patch 3, the version of the Ethernet adapter is 4.5.1.0 and the version of the modules is 4.1.0.0. Any help on this will be greatly appreciated. Thanks
Last updated: 2024-02-02

Post by danieldiaz on Problem with FB execution ^{CODESYS Forge talk (Post)}
Hello everyone, I've been working on a system which needs an error function, with this purpose I've created a FB programmed in LD, after debugging I run the simulation. It seems that the variable linked to a coil doesn't change the value when the contacts are associated to input variables. When I use internal variables the logic works properly. I don't know if the problem is related to the variables definition or with the logic program. As you can see in the image, I1 and I2 are variables declared on the FB, the rest are input variables. If I force the eStop and Reset signals to TRUE the coil value should change, but it doesn't. However in the second network if I1 is TRUE the coil change to TRUE as it has to be. To sum up, my doubt is why that coil doesn't change its value? I would like someone to shed a light on this. Thanks!
Last updated: 2024-04-02

Post by alexgooi on Modbus writing on value change ^{CODESYS Forge talk (Post)}
Hi Duvan, You could make this in 1 single object (FB), Indeed don't use a function for this beacuse you need some memory to keep the old value. For i := 0 TO 200 BY 1 DO //Check if the value has been changed IF Old_Value[i] <> Value[i] THEN //Set the trigger to TRUE Trigger[i] := TRUE; Old_Value[i] := Value[i]; END_IF END_FOR If you define the Value array as an In_Out and the Trigger as an In_Out you arn't claiming any aditional memory to your system. You ofcourse then need to add some code arround it that does something with the trigger and writes it back to FALSE again. If you want more flexability you also could use pointers instead of using the IN_OUT FOR i := 0 TO 200 BY 1 DO address := address_Input + i * SIZEOF(*Put type here); IF Address^ <> Old_Value[i] THEN Trigger[i] := TRUE; Old_Value[i] := Address^; END_IF END_FOR
Last updated: 2024-04-02

Post by culius on JSON ^{CODESYS Forge talk (Post)}
Hey guys, I am trying to write a JSON. First time after login in PLC after download everthing works. But when I want to change values during runtime and try to recreate the JSON nothing happens. When forcing the xStart as an impulse i want to recreate it and see 2 as Key3 instead of 1 from the first run. Any Idea how to make this work? PROGRAM test VAR factory : JSON.JSONDataFactory; eDataFactoryError : JSON.FBF.ERROR; pJsonData : POINTER TO JSON.JSONData := factory.Create(eError => eDataFactoryError); fb_JBuilder : JSON.JSONBuilder; wsValue : WSTRING; diRootIndex, diObject1Index : DINT; iValue : INT; jsonArrayWriter : JSON.JSONByteArrayWriter; wsJsonData : WSTRING(1000); xFirst : BOOL := TRUE; END_VAR IF xFirst THEN fb_JBuilder(pJsonData := pJsonData, diRootObj => diRootIndex); wsValue := "Value1"; fb_JBuilder.SetKeyWithValue("Key1", wsValue, diParentIndex := diRootIndex); diObject1Index := fb_JBuilder.SetKeyWithObject("Key2", diParentIndex := diRootIndex); iValue := iValue + 1 ; // -----------!!! secound run should increment key3!!!!------------ fb_JBuilder.SetKeyWithValue("Key3", iValue, diParentIndex := diObject1Index); xFirst := FALSE; END_IF jsonArrayWriter(xExecute := TRUE, pwData := ADR(wsJsonData), udiSize := SIZEOF(wsJsonData), jsonData := pJsonData^, xAsyncMode := FALSE); Kind Regards
Last updated: 2024-04-30

Post by hanoues on setting date and time on CPX-E ^{CODESYS Forge talk (Post)}
Hello, Can anybody here tell me how to modify the time and date on my CPX-E? I used the code I found on CODESYS online help, but it doesn't work. What am I missing? FUNCTION current_date_time : STRING VAR stUTC_Timestamp : SysTime; //utc time // ULINT#1528280694913 stLocal_TimeStamp : SysTime; //local time but is in general equal // ULINT#1528280694913 stdNow : SysTimeDate; //local time in an object to access each number (day, month...) dtNow : DATE_AND_TIME;//DT#2018-6-6-10:24:54 todNow : TIME_OF_DAY; // TOD#10:24:54.913 datNow : DATE; // D#2018-6-6 END_VAR SysTimeRtcHighResGet(stUTC_Timestamp); // ULINT#1528273494913 SysTimeRtcConvertHighResToLocal(stUTC_Timestamp, stdNow); //convert UTC ULINT to Local SysTime // stdNow.wYear = UINT#2018 // stdNow.wMonth = UINT#6 // stdNowy.wDay = UINT#6 // stdNow.wHour = UINT#10 // stdNow.wMinute = UINT#24 // stdNow.wSecond = UINT#54 // stdNow.wMilliseconds = UINT#913 // stdNow.wDayOfWeek = UINT#3 // stdNow.wYday = UINT#157 SysTimeRtcConvertDateToHighRes(stdNow, stLocal_TimeStamp); // ULINT#1528280694913 dtNow := TO_DT(stLocal_TimeStamp / 1000 ( ms )); // DT#2018-6-6-10:24:54 todNow := TO_TOD(stLocal_TimeStamp MOD TO_ULINT(T#1D)); // TOD#10:24:54.913 datNow := TO_DATE(dtNow); // D#2018-6-6 (convert to appropriate string) current_date_time := concat('$N[', TO_STRING(dtNow)); current_date_time:= concat(current_date_time,'.'); current_date_time:= concat(current_date_time, TO_STRING(stdNow.wMilliseconds)); current_date_time:= concat(current_date_time,'] - '); RETURN;
Last updated: 2024-05-21

Post by cmj-icsys on Custom configure tab in device editor ^{CODESYS Forge talk (Post)}
Hi everyone, I’m developing a custom CODESYS I/O driver for my company’s device, and I’ve been studying the example projects in CODESYS V3.5 SP20 Patch 5. In the IOMappingExample.project, I noticed that EtherCAT devices provide additional configuration tabs in the Device Editor, such as General, Process Data, etc. However, for custom I/O driver examples (based on IoDrv), the Device Editor only shows the default tabs like <devicename> I/O Mapping or <devicename> Parameters.</devicename></devicename> I’d like to create custom tabs or configuration pages in the Device Editor (e.g., “General Settings”, “Communication”, etc.) to allow users to configure parameters in a more structured way. Could anyone explain: How to define and register custom tabs or UI pages in the Device Editor? What tools or SDKs are needed to create UI elements such as combo boxes or check boxes? How to bind those UI controls to device parameters defined in the XML (device description)? Any example, SDK reference, or documentation link would be really helpful. Thanks in advance!
Last updated: 2025-10-20

Post by bmatlove on Re-create CoE online window in Visu ^{CODESYS Forge talk (Post)}
Hello, I am trying to re-create the CoE online window within a Visu for purposes of checking and interacting with device parameters occasionally for maintenance purposes. To minimize reliance on using the IDE for misc interactions. Ideally, I would like to exactly mimic the CoE online window within the IDE. I assume that it uses a few tricks to minimize overhead, such as only polling registers which are within the visual scope, for example. I'm afraid it might be too much to ask for a pre-built drop-in Visu module to exist for this task. Do I have any options aside from manually re-creating all the logic to do this, relying heavily on SdoInfo function blocks? Is there a way for me to reference the device ESI file to shortcut the process of determining how many registers there are and getting the address for each?
Last updated: 2025-12-27

Post by yannickasselin on CloseTargetVisu ^{CODESYS Forge talk (Post)}
To shutdown the TargetVisu: Add the VisuElemBase library to your project then call VisuElemBase.Visu_PRG.RemoveAllTargetVisuClients(); Exemple: PROGRAM PLC_PRG VAR xShutdownTargetVisu: BOOL; END_VAR ---------------------------------- IF xShutdownTargetVisu THEN xShutdownTargetVisu := FALSE; VisuElemBase.Visu_PRG.RemoveAllTargetVisuClients(); END_IF I tried calling RemoveAllTargetVisuClients() directly from a button mouse click event but it makes the Visu crash. So better using the code above and just set xShutdownTargetVisu to TRUE from the button. Works fine for me. To start the TargetVisu: From a cmd prompt. This will start the TargetVisu C:\Program Files\CODESYS\CODESYS Control RTE3>VisualClientController.exe --application=Application --flags=1 You can then place a .bat file on the desktop and put this inside: CD "C:\Program Files\CODESYS\CODESYS Control RTE3" VisualClientController.exe --application=Application --flags=1 exit Double clicking the .bat file will start the TargetVisu. You may need to replace the Application name by your own application name. Good to know: In the cmd above, if you replace --flags=1 by --flags=2, it will shutdown the TargetVisu.
Last updated: 2026-03-11

Post by imdatatas on CFC editor: enable inline value entry on unconnected input pins (as in Ladder Logic editor) ^{CODESYS Forge talk (Post)}
In the CODESYS Ladder Logic editor, there's a really practical feature available while logged in (online) to the PLC: for an existing function block (e.g. TON or MC_MoveAbsolute), double-clicking on an unconnected input pin directly opens a value entry window right in the editor — with no need to assign any variable — and you can type a value directly. Likewise, if the input pin is of an ENUM or STRUCT type, it lets you pick a value of that type straight from a dropdown list. It also doesn't require assigning a variable or adding it to a watch list, etc. Unfortunately, in the CFC editor you can't write values directly to those unconnected input pins the way you can in Ladder — CFC only supports monitoring/display there. I wish this existing Ladder editor feature were also available in CFC — it would make the CFC editor far more usable. I think this would be a relatively small addition to the CFC editor, but it would make a real difference in daily commissioning and debugging work. It would be great to hear the development team's thoughts on whether this could be considered for a future release. Thanks in advance for reading!
Last updated: 2026-09-10

Post by jzhvymetal77 on IecVarAccessLibrary.IBaseTreeNode methon ^{CODESYS Forge talk (Post)}
I had this code working in a previous version of CoDeSys to read variables from a GVL that were added to the Symbol configuration. The problem now is that when I get the _IBaseTreeNode_Parent, it returns a valid interface, but none of the methods or properties work. If you monitor the _IBaseTreeNode in the watch window, it does show the correct child count. However, it fails at step 30, where the child count incorrectly returns zero. In the image, you can see that the watch window displays the correct value that the property should return. Attached is the full project code. FUNCTION_BLOCK Symbols_TO_STR VAR_INPUT i_sPath : STRING(255); i_diIndexChild : DINT; i_diIndexComponent : DINT; END_VAR VAR_OUTPUT q_diChildCount : DINT; q_diComponentCount : DINT; q_sName : STRING(255); q_sValue : STRING(255); q_sType : STRING(80); q_sErrorResult : STRING(80); END_VAR VAR uiStepCopy : UINT; uiStep : UINT; uiStepProcessCopy : UINT; uiStepProcess : UINT; _IBase : IecVarAccessLibrary.IBase; _pIIecVarAccess5 : POINTER TO IecVarAccessLibrary.IIecVarAccess5; _IIecVarAccess5 : IecVarAccessLibrary.IIecVarAccess5; _RTS_IEC_RESULT : IecVarAccessLibrary.RTS_IEC_RESULT; _udiResult : UDINT; _VariableInformationStruct : IecVarAccessLibrary.VariableInformationStruct; _IBaseTreeNode_Parent : IecVarAccessLibrary.IBaseTreeNode; _IBaseTreeNode_Child : IecVarAccessLibrary.IBaseTreeNode; _ITypeDesc_Child : IecVarAccessLibrary.ITypeDesc; _TypeDescAsUnion_Child : IecVarAccessLibrary.TypeDescAsUnion; _arIBaseTreeNode_Child : ARRAY[0..20] OF IecVarAccessLibrary.IBaseTreeNode; _TypeClass_Child : IecVarAccessLibrary.IBaseLibrary.TypeClass; _psSymbolName_Child : POINTER TO STRING; _sSymbolName_Child : STRING(255); _IBaseTreeNode_Component : REFERENCE TO IecVarAccessLibrary.IBaseTreeNode; _TypeClass_Component : IecVarAccessLibrary.IBaseLibrary.TypeClass; _ByteAddress_Component : __XWORD; _ByteOffset_Component : __XWORD; _sArrayIndexName_Component : STRING(20); _diArrayIndexCalc_Component : DINT; _diArrayIndexValue_Component: DINT; _psSymbolName_Component : POINTER TO STRING; _sSymbolName_Component : STRING(255); END_VAR uiStepCopy:=uiStep; uiStepProcessCopy:=uiStepProcess; CASE uiStep OF 10: // GET IBASE FROM CURRENT APP _IBase:= IecVarAccessLibrary.IecVarAccGetFirstInterface2(0); IF _IBase<>0 THEN uiStep:=20; ELSE q_sErrorResult:=CONCAT(UINT_TO_STRING(uiStep), ': IecVarAccGetFirstInterface2'); uiStep:=9000; END_IF 20: //QueryInterface IIecVarAccess5 from IBASE _pIIecVarAccess5 := _IBase.QueryInterface(IecVarAccessLibrary.ITFID_IIecVarAccess5, ADR(_RTS_IEC_RESULT)); IF _pIIecVarAccess5<>0 AND _RTS_IEC_RESULT=0 THEN _IIecVarAccess5 := _pIIecVarAccess5^; uiStep:=30; ELSE q_sErrorResult:=CONCAT(UINT_TO_STRING(uiStep), ': QueryInterface_IIecVarAccess5'); uiStep:=9000; END_IF 30: // Get IBaseTreeNode_Parent _IBaseTreeNode_Parent := _IIecVarAccess5.VarAccGetNode3(ADR(i_sPath), ADR(_VariableInformationStruct), ADR(_RTS_IEC_RESULT)); IF _IBaseTreeNode_Parent<>0 AND _RTS_IEC_RESULT=0 THEN q_diChildCount:=_IBaseTreeNode_Parent.ChildCount; uiStep:=40; ELSE q_sErrorResult:=CONCAT(UINT_TO_STRING(uiStep), ': IBaseTreeNode_Parent'); uiStep:=9000; END_IF 40: // Get IBaseTreeNod_Child IF(q_diChildCount-1>=i_diIndexChild AND i_diIndexChild >=0) THEN _IBaseTreeNode_Child := _IBaseTreeNode_Parent.GetChild(i_diIndexChild); IF _IBaseTreeNode_Child<>0 THEN uiStep:=50; ELSE q_sErrorResult:=CONCAT(UINT_TO_STRING(uiStep), ': IBaseTreeNode_Parent'); uiStep:=9000; END_IF ELSE q_sErrorResult:=CONCAT(UINT_TO_STRING(uiStep), ': i_diIndexChild OutBounds'); uiStep:=9000; END_IF
Last updated: 2025-08-20

Post by spiessli on Raspberry Pi 4 with Legacy Drivers and Codesys 3.5.19 Patch 4 ^{CODESYS Forge talk (Post)}
Hi, I wanted to use the Adafruit Hat for the Raspberry and get acquainted with Softmotion using servos for RC models. This did work great with Codesys 3.5.19 Patch 1, but with Patch 4 and 5 i get errors. I suspect changes in the SoftMotion library have broken dependencies in the legacy drivers, might that be true? Thanks for any hint, spiessli Here the error log: ------ Übersetzungslauf gestartet: Applikation: Device.Application ------- Code typisieren... Code erzeugen... [FEHLER] sm3_drive_servo, 4.6.0.0 (3s - smart software solutions gmbh): GetStandardConfigParams AXIS_REF_SERVO: C0032: Typ 'Unbekannter Typ: 'ConfigGetParameterValueLREAL(pParam, 0)'' kann nicht in Typ 'LREAL' konvertiert werden [FEHLER] sm3_drive_servo, 4.6.0.0 (3s - smart software solutions gmbh): GetStandardConfigParams AXIS_REF_SERVO: C0046: Bezeichner 'ConfigGetParameterValueLREAL' nicht definiert [FEHLER] sm3_drive_servo, 4.6.0.0 (3s - smart software solutions gmbh): GetStandardConfigParams AXIS_REF_SERVO: C0035: Programmname, Funktion oder Funktionsbausteinstanz an Stelle von 'ConfigGetParameterValueLREAL' erwartet [FEHLER] sm3_drive_servo, 4.6.0.0 (3s - smart software solutions gmbh): GetStandardConfigParams AXIS_REF_SERVO: C0032: Typ 'Unbekannter Typ: 'ConfigGetParameterValueLREAL(pParam, 0)'' kann nicht in Typ 'LREAL' konvertiert werden [FEHLER] sm3_drive_servo, 4.6.0.0 (3s - smart software solutions gmbh): GetStandardConfigParams AXIS_REF_SERVO: C0046: Bezeichner 'ConfigGetParameterValueLREAL' nicht definiert [FEHLER] sm3_drive_servo, 4.6.0.0 (3s - smart software solutions gmbh): GetStandardConfigParams AXIS_REF_SERVO: C0035: Programmname, Funktion oder Funktionsbausteinstanz an Stelle von 'ConfigGetParameterValueLREAL' erwartet [FEHLER] sm3_drive_servo, 4.6.0.0 (3s - smart software solutions gmbh): GetStandardConfigParams AXIS_REF_SERVO: C0032: Typ 'Unbekannter Typ: 'ConfigGetParameterValueLREAL(pParam, 0)'' kann nicht in Typ 'LREAL' konvertiert werden [FEHLER] sm3_drive_servo, 4.6.0.0 (3s - smart software solutions gmbh): GetStandardConfigParams AXIS_REF_SERVO: C0046: Bezeichner 'ConfigGetParameterValueLREAL' nicht definiert [FEHLER] sm3_drive_servo, 4.6.0.0 (3s - smart software solutions gmbh): GetStandardConfigParams AXIS_REF_SERVO: C0035: Programmname, Funktion oder Funktionsbausteinstanz an Stelle von 'ConfigGetParameterValueLREAL' erwartet [FEHLER] sm3_drive_servo, 4.6.0.0 (3s - smart software solutions gmbh): GetStandardConfigParams AXIS_REF_SERVO: C0032: Typ 'Unbekannter Typ: 'ConfigGetParameterValueLREAL(pParam, 0)'' kann nicht in Typ 'LREAL' konvertiert werden [FEHLER] sm3_drive_servo, 4.6.0.0 (3s - smart software solutions gmbh): GetStandardConfigParams AXIS_REF_SERVO: C0046: Bezeichner 'ConfigGetParameterValueLREAL' nicht definiert [FEHLER] sm3_drive_servo, 4.6.0.0 (3s - smart software solutions gmbh): GetStandardConfigParams AXIS_REF_SERVO: C0035: Programmname, Funktion oder Funktionsbausteinstanz an Stelle von 'ConfigGetParameterValueLREAL' erwartet [FEHLER] sm3_drive_servo, 4.6.0.0 (3s - smart software solutions gmbh): GetStandardConfigParams AXIS_REF_SERVO: C0032: Typ 'Unbekannter Typ: 'ConfigGetParameterValueLREAL(pParam, 0)'' kann nicht in Typ 'LREAL' konvertiert werden [FEHLER] sm3_drive_servo, 4.6.0.0 (3s - smart software solutions gmbh): GetStandardConfigParams AXIS_REF_SERVO: C0046: Bezeichner 'ConfigGetParameterValueLREAL' nicht definiert [FEHLER] sm3_drive_servo, 4.6.0.0 (3s - smart software solutions gmbh): GetStandardConfigParams AXIS_REF_SERVO: C0035: Programmname, Funktion oder Funktionsbausteinstanz an Stelle von 'ConfigGetParameterValueLREAL' erwartet Übersetzung abgeschlossen -- 15 Fehler, 0 Warnungen : Kein Download möglich
Last updated: 2023-12-19

Post by spiessli on Raspberry Pi 4 with Legacy Drivers and Codesys 3.5.19 Patch 4 ^{CODESYS Forge talk (Post)}
Thanks for the suggestion, I have tried it eagerly: I have updated all packages to latest version with Codesys Installer and installed newest runtime and gateway on Raspberry Pi. Unfortunately, the error is still there. As soon as I add the SM_Drive_Servo to the device tree, I get the error below when generating the code. Reverting SM3_Basic to version 4.14 makes the error disappear. ------ Übersetzungslauf gestartet: Applikation: Device.Application ------- Code typisieren... Code erzeugen... [FEHLER] sm3_drive_servo, 4.10.0.0 (codesys): GetStandardConfigParams [AXIS_REF_SERVO]: C0032: Typ 'Unbekannter Typ: 'ConfigGetParameterValueLREAL(pParam, 0)'' kann nicht in Typ 'LREAL' konvertiert werden [FEHLER] sm3_drive_servo, 4.10.0.0 (codesys): GetStandardConfigParams [AXIS_REF_SERVO]: C0046: Bezeichner 'ConfigGetParameterValueLREAL' nicht definiert [FEHLER] sm3_drive_servo, 4.10.0.0 (codesys): GetStandardConfigParams [AXIS_REF_SERVO]: C0035: Programmname, Funktion oder Funktionsbausteinstanz an Stelle von 'ConfigGetParameterValueLREAL' erwartet [FEHLER] sm3_drive_servo, 4.10.0.0 (codesys): GetStandardConfigParams [AXIS_REF_SERVO]: C0032: Typ 'Unbekannter Typ: 'ConfigGetParameterValueLREAL(pParam, 0)'' kann nicht in Typ 'LREAL' konvertiert werden [FEHLER] sm3_drive_servo, 4.10.0.0 (codesys): GetStandardConfigParams [AXIS_REF_SERVO]: C0046: Bezeichner 'ConfigGetParameterValueLREAL' nicht definiert [FEHLER] sm3_drive_servo, 4.10.0.0 (codesys): GetStandardConfigParams [AXIS_REF_SERVO]: C0035: Programmname, Funktion oder Funktionsbausteinstanz an Stelle von 'ConfigGetParameterValueLREAL' erwartet [FEHLER] sm3_drive_servo, 4.10.0.0 (codesys): GetStandardConfigParams [AXIS_REF_SERVO]: C0032: Typ 'Unbekannter Typ: 'ConfigGetParameterValueLREAL(pParam, 0)'' kann nicht in Typ 'LREAL' konvertiert werden [FEHLER] sm3_drive_servo, 4.10.0.0 (codesys): GetStandardConfigParams [AXIS_REF_SERVO]: C0046: Bezeichner 'ConfigGetParameterValueLREAL' nicht definiert [FEHLER] sm3_drive_servo, 4.10.0.0 (codesys): GetStandardConfigParams [AXIS_REF_SERVO]: C0035: Programmname, Funktion oder Funktionsbausteinstanz an Stelle von 'ConfigGetParameterValueLREAL' erwartet [FEHLER] sm3_drive_servo, 4.10.0.0 (codesys): GetStandardConfigParams [AXIS_REF_SERVO]: C0032: Typ 'Unbekannter Typ: 'ConfigGetParameterValueLREAL(pParam, 0)'' kann nicht in Typ 'LREAL' konvertiert werden [FEHLER] sm3_drive_servo, 4.10.0.0 (codesys): GetStandardConfigParams [AXIS_REF_SERVO]: C0046: Bezeichner 'ConfigGetParameterValueLREAL' nicht definiert [FEHLER] sm3_drive_servo, 4.10.0.0 (codesys): GetStandardConfigParams [AXIS_REF_SERVO]: C0035: Programmname, Funktion oder Funktionsbausteinstanz an Stelle von 'ConfigGetParameterValueLREAL' erwartet [FEHLER] sm3_drive_servo, 4.10.0.0 (codesys): GetStandardConfigParams [AXIS_REF_SERVO]: C0032: Typ 'Unbekannter Typ: 'ConfigGetParameterValueLREAL(pParam, 0)'' kann nicht in Typ 'LREAL' konvertiert werden [FEHLER] sm3_drive_servo, 4.10.0.0 (codesys): GetStandardConfigParams [AXIS_REF_SERVO]: C0046: Bezeichner 'ConfigGetParameterValueLREAL' nicht definiert [FEHLER] sm3_drive_servo, 4.10.0.0 (codesys): GetStandardConfigParams [AXIS_REF_SERVO]: C0035: Programmname, Funktion oder Funktionsbausteinstanz an Stelle von 'ConfigGetParameterValueLREAL' erwartet Übersetzung abgeschlossen -- 15 Fehler, 0 Warnungen : Kein Download möglich
Last updated: 2023-12-20

Post by jickisticki on Witch library? ^{CODESYS Forge talk (Post)}
Crafting my Fellowship Personal Statement was like weaving the threads of my aspirations into a tapestry of words. Each sentence became a brushstroke, painting a vivid portrait of my journey and ambitions. Beyond being just a document, it became a mirror reflecting the depth of my experiences. Like a conductor guiding an orchestra, my personal statement was composed to resonate with my unique voice. In the realm of specialized opportunities, this statement serves as a compass, guiding me toward the next chapter of my professional growth. With each word, I felt the guidance of mentors shaping my story into an eloquent narrative.
Last updated: 2023-08-17

Post by ofey on Modbus TCP communication ^{CODESYS Forge talk (Post)}
Hi! I tried setting up the PLC I'm working with (Beijer GN-9373) to connect to a modbus master running on a laptop. I have an ethernet connection (via USB-C to ethernet) between the laptop and the controller. I have tried following tutorial on how to set this up. I have added an ethernet device with the IP-address of the PLC. Further I added a ModbusTCP_Slave_Device with default settings. I get the error "Failed to open TCP Port: 1" when I try to go online with the PLC. Earlier I tested the exact same set up with the soft PLC from codesys. I can then read/write values correctly with the Modbus master i have running on the laptop. Hope anybody can help me with this, thanks in advance!
Last updated: 2023-10-06

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