CANOpen SDO to write VISIBLE STRING ^{CODESYS Forge talk (Thread)}
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how to use UseDataExpanding() in datasource ^{CODESYS Forge talk (Thread)}
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Connect to Azure IoT Hub ^{CODESYS Forge talk (Thread)}
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Post by rohitk on CoDeSys libraries for BECKHOFF EL7332/EL7342 ^{CODESYS Forge talk (Post)}
Hi, step 1 : go to beckhoff website, go to required IO card, go to download option in that, go to XML donlowad and download the file Step2 : Go to codesys software, go to tools - deviceRepository - install that downloaded file.
Last updated: 2023-08-24

Post by riccardo on How to allow a user to handle certificates without access to sourcecode? ^{CODESYS Forge talk (Post)}
It would be usefull to me too, I would need to manage HTTPS and OPC UA certificate without perform the access to the whole sorce code project
Last updated: 2023-11-27

Is it possible to link an array of bits to an alarm group to show a lot of alarms at once? ^{CODESYS Forge talk (Thread)}
Is it possible to link an array of bits to an alarm group to show a lot of alarms at once?
Last updated: 2021-07-08

How to transfer data from DINT to Union(16 Bools) which I need to use in Few FBs ^{CODESYS Forge talk (Thread)}
How to transfer data from DINT to Union(16 Bools) which I need to use in Few FBs
Last updated: 2023-12-14

Post by jonasz on Device diagnosis ( EtherCAT IO card ) ^{CODESYS Forge talk (Post)}
Hi, I'll link to the topic not wanting to start a new one. In the application I am building, I wanted to use the diagnostics described in the CAA Device Diagnosis library. In principle, everything is ok, except for the elements related to ModbusTCP. Despite the fact that ModbusTCP is taken into account in the documentation, it is not recognised via the interfaces. FUNCTION_BLOCK NET_HW_DIAG VAR_INPUT END_VAR VAR_OUTPUT END_VAR VAR (* Referencja do struktury z danymi dla HMI ASTRAADA.*) Visu: REFERENCE TO VISU; (* Wskaźnik na mastera EtherCAT.*) pEtherCATMaster : POINTER TO IoDrvEtherCAT; (* Wskaźnik na slave EtherCAT.*) pEtherCATSlave : POINTER TO EtcSlave; (* Interfejs dla węzła w drzewie urządzeń.*) _itfNode: DED.INode; (* Ogólny interfejs magistrali. Zapewnia podstawowe informacje o magistrali polowej.*) _itfBus: DED.IBus; (* Interfejs urządzenia. Zapewnia rozszerzone informacje o urządzeniu (magistralowym).*) _itfDevice2: DED.IDevice2; (* Ogólny interfejs magistrali. Zapewnia podstawowe informacje o magistrali polowej.*) _itfStack: DED.IStack; (* Numer węzła w drzewie urządzeń.*) uiNodes: UINT; (* Operator jest rozszerzeniem normy IEC 61131-3. W czasie wykonywania operator wykonuje konwersję typu odwołania do interfejsu na inny typ. Operator zwraca wynik BOOL. Wartość TRUE oznacza, że CODESYS pomyślnie wykonał konwersję. *) xQueryResultBus: BOOL; xQueryResultDevice2: BOOL; xQueryResultStack: BOOL; (* Struktura danych dotyczących węzłów w drzewie urządzeń.*) NetHwDiag: NW_HW_STAT; ModbusTcpClientDeviceInfo: IoDrvModbusTCP.DED.DEVICE_INFO; ModbusTcpClientDeviceState: IoDrvModbusTCP.DED.DEVICE_STATE; ModbusTcpDeviceInfo: IoDrvModbusTCP.DED.DEVICE_INFO; ModbusTcpDeviceState: IoDrvModbusTCP.DED.DEVICE_STATE; END_VAR (* Pobranie wskaźników dla pierwszego mastera i pierwszego slave w sieci EtherCAT.*) pEtherCATMaster := g_pFirstMaster; pEtherCATSlave := pEtherCATMaster^.FirstSlave; (* Diagnostyka sieci EtherCAT.*) pEtherCATMaster := g_pFirstMaster; pEtherCATSlave := pEtherCATMaster^.FirstSlave; NetHwDiag.xConfigFinished := pEtherCATMaster^.xConfigFinished; NetHwDiag.xDistributedClockInSync := pEtherCATMaster^.xDistributedClockInSync; NetHwDiag.xError := pEtherCATMaster^.xError; NetHwDiag.xSyncInWindow := pEtherCATMaster^.xSyncInWindow; NetHwDiag.sLastMessage := pEtherCATMaster^.LastMessage; NetHwDiag.LastError := pEtherCATMaster^.LastError; (* Diagnostyka drzewa urządzeń.*) uiNodes := 0; _itfNode := DED.GetRoot(); REPEAT NetHwDiag.asDeviceName[uiNodes] := DED.GetDeviceNameString(itfNode := _itfNode); xQueryResultBus := __QUERYINTERFACE(_itfNode,_itfBus); IF xQueryResultBus THEN _itfBus.GetBusInfo(buiInfo := NetHwDiag.aBusInfo[uiNodes]); NetHwDiag.aBusState[uiNodes] := _itfBus.GetBusState(); END_IF xQueryResultDevice2 := __QUERYINTERFACE(_itfNode,_itfDevice2); IF xQueryResultDevice2 THEN _itfDevice2.GetDeviceInfo(deiInfo := NetHwDiag.aDeviceInfo[uiNodes]); NetHwDiag.aDeviceState[uiNodes] := _itfDevice2.GetDeviceState(); IF pEtherCATSlave <>0 THEN pEtherCATSlave^(); IF pEtherCATSlave^.SlaveAddr = NetHwDiag.aDeviceInfo[uiNodes].idSystem THEN NetHwDiag.aAlStatus[uiNodes] := pEtherCATSlave^.ALStatus; pEtherCATSlave := pEtherCATSlave^.NextInstance; END_IF END_IF ELSE xQueryResultStack := __QUERYINTERFACE(_itfNode,_itfStack); IF xQueryResultStack THEN _itfStack.GetDeviceInfo(deiInfo := NetHwDiag.aDeviceInfo[uiNodes]); NetHwDiag.aDeviceState[uiNodes] := _itfStack.GetDeviceState(); END_IF END_IF uiNodes := uiNodes + 1; _itfNode := DED.GetNextNode(_itfNode); UNTIL _itfNode = 0 END_REPEAT (* Diagnostyka Modbus.*) Modbus_TCP_Client.GetDeviceInfo(deiInfo := ModbusTcpClientDeviceInfo); ModbusTcpClientDeviceState := Modbus_TCP_Client.GetDeviceState(); PAC_3200T.GetDeviceInfo(deiInfo := ModbusTcpDeviceInfo); ModbusTcpDeviceState := PAC_3200T.GetDeviceState(); Of course, you can take the easy way out and refer directly to the devices, but I wanted a reusable component. Any constructive help is very welcome Best regards Jonasz
Last updated: 2025-07-15

Post by mogam on Internal error:System.NullReferenceException: The object reference was not set to an object instance. ^{CODESYS Forge talk (Post)}
Hi everyone, I have a my App that reads values from a shared memory than 2 variables x,y were calculated. here as you can see in my code: PROGRAM PLC_PRG VAR szName : STRING := '/SM'; ( Name of the shared memory.) uxiSize : __UXINT := 646 * 2 * SIZEOF(REAL); ( Size of the shared memory. ) hShm : RTS_IEC_HANDLE; ( Handle to the shared memory ) pStart : POINTER TO REAL; ( Pointer to the first element in the memory ) pData : POINTER TO REAL; ( Pointer, which is incremented until the last sign in the memory is reached. ) shared_data :ARRAY[0..645, 0..1] OF REAL; velocity : ARRAY[0..2] OF REAL; ( Velocity array ) position : ARRAY[0..2] OF REAL; ( Position array ) angleDepth : ARRAY[0..645, 0..1] OF REAL; ( Angle and depth array ) xEndOfMemory : BOOL; x : ARRAY[0..645] OF REAL := 1.0; y : ARRAY[0..645] OF REAL := 1.0; (* Result of actions at the memory. *) OpenResult : RTS_IEC_RESULT; ReadResult : RTS_IEC_RESULT; PointerResult : RTS_IEC_RESULT; DeleteResult : RTS_IEC_RESULT; CloseResult : RTS_IEC_RESULT; i : INT; END_VAR ( Open the shared memory ) hShm := SysSharedMemoryOpen2(szName, 0, ADR(uxiSize), ADR(OpenResult)); IF hShm <> RTS_INVALID_HANDLE THEN (* Read the entire shared memory table *) SysSharedMemoryRead(hShm:= hShm, ulOffset:= 0, pbyData:= ADR(shared_data), ulSize:= uxiSize, pResult:= ADR(ReadResult)); (* Fetch the pointer from the shared memory. The pointer is pointing to the first element address *) //pStart := SysSharedMemoryGetPointer(hShm, ADR(PointerResult)); (* Close the shared memory *) //CloseResult := SysSharedMemoryClose(hShm := hShm); (* Read velocity and position data from the shared memory *) FOR i := 0 TO 2 DO velocity[i] := shared_data[i, 0]; position[i] := shared_data[i, 1]; END_FOR; (* Read angle and depth data from the shared memory *) FOR i := 0 TO 645 DO angleDepth[i, 0] := shared_data[(i + 6), 0]; angleDepth[i, 1] := shared_data[(i + 6), 1]; END_FOR; FOR i := 0 TO 645 DO x[i] := angleDepth[i, 1]*COS(angleDepth[i, 0]); y[i] := angleDepth[i, 1]*SIN(angleDepth[i, 0]); END_FOR; END_IF For these values an XY-CHART needs to be done and when i create a visualisation and set the x data and y data when i try to compile, i recieve this error: ------ Übersetzungslauf gestartet: Applikation: Device.Read_App ------- Code typisieren ... [FEHLER] Internal error:System.NullReferenceException: Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt. bei _3S.CoDeSys.LanguageModelManager.LDateType.Accept(ITypeVisitor typvis) bei ..(_IVariable , IScope5 , _ICompileContext , _ISignature ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei ..
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(_ICompileContext , _IPreCompileContext , _ICompileContext , IProgressCallback ) bei _3S.CoDeSys.Compiler35140.Compiler.
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(Guid , Boolean , Boolean , Boolean , Boolean& , _ICompileContext& , _ICompileContext& , IProgressCallback , Boolean , Boolean ) Kompilierung abgeschlossen -- 1 Fehler, 0 Warnungen Übersetzung abgeschlossen -- 1 Fehler, 0 Warnungen : Kein Download möglich!
Last updated: 2024-05-24

Post by mogam on Internal error:System.NullReferenceException: The object reference was not set to an object instance. ^{CODESYS Forge talk (Post)}
Hi everyone, I have a my App that reads values from a shared memory than 2 variables x,y were calculated. here as you can see in my code: PROGRAM PLC_PRG VAR szName : STRING := '/SM'; ( Name of the shared memory.) uxiSize : __UXINT := 646 * 2 * SIZEOF(REAL); ( Size of the shared memory. ) hShm : RTS_IEC_HANDLE; ( Handle to the shared memory ) pStart : POINTER TO REAL; ( Pointer to the first element in the memory ) pData : POINTER TO REAL; ( Pointer, which is incremented until the last sign in the memory is reached. ) shared_data :ARRAY[0..645, 0..1] OF REAL; velocity : ARRAY[0..2] OF REAL; ( Velocity array ) position : ARRAY[0..2] OF REAL; ( Position array ) angleDepth : ARRAY[0..645, 0..1] OF REAL; ( Angle and depth array ) xEndOfMemory : BOOL; x : ARRAY[0..645] OF REAL := 1.0; y : ARRAY[0..645] OF REAL := 1.0; (* Result of actions at the memory. *) OpenResult : RTS_IEC_RESULT; ReadResult : RTS_IEC_RESULT; PointerResult : RTS_IEC_RESULT; DeleteResult : RTS_IEC_RESULT; CloseResult : RTS_IEC_RESULT; i : INT; END_VAR ( Open the shared memory ) hShm := SysSharedMemoryOpen2(szName, 0, ADR(uxiSize), ADR(OpenResult)); IF hShm <> RTS_INVALID_HANDLE THEN (* Read the entire shared memory table *) SysSharedMemoryRead(hShm:= hShm, ulOffset:= 0, pbyData:= ADR(shared_data), ulSize:= uxiSize, pResult:= ADR(ReadResult)); (* Fetch the pointer from the shared memory. The pointer is pointing to the first element address *) //pStart := SysSharedMemoryGetPointer(hShm, ADR(PointerResult)); (* Close the shared memory *) //CloseResult := SysSharedMemoryClose(hShm := hShm); (* Read velocity and position data from the shared memory *) FOR i := 0 TO 2 DO velocity[i] := shared_data[i, 0]; position[i] := shared_data[i, 1]; END_FOR; (* Read angle and depth data from the shared memory *) FOR i := 0 TO 645 DO angleDepth[i, 0] := shared_data[(i + 6), 0]; angleDepth[i, 1] := shared_data[(i + 6), 1]; END_FOR; FOR i := 0 TO 645 DO x[i] := angleDepth[i, 1]*COS(angleDepth[i, 0]); y[i] := angleDepth[i, 1]*SIN(angleDepth[i, 0]); END_FOR; END_IF For these values an XY-CHART needs to be done and when i create a visualisation and set the x data and y data when i try to compile, i recieve this error: ------ Übersetzungslauf gestartet: Applikation: Device.Read_App ------- Code typisieren ... [FEHLER] Internal error:System.NullReferenceException: Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt. bei _3S.CoDeSys.LanguageModelManager.LDateType.Accept(ITypeVisitor typvis) bei ..(_IVariable , IScope5 , _ICompileContext , _ISignature ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei ..
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(_ICompileContext , _IPreCompileContext , _ICompileContext , IProgressCallback ) bei _3S.CoDeSys.Compiler35140.Compiler.
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(Guid , Boolean , Boolean , Boolean , Boolean& , _ICompileContext& , _ICompileContext& , IProgressCallback , Boolean , Boolean ) Kompilierung abgeschlossen -- 1 Fehler, 0 Warnungen Übersetzung abgeschlossen -- 1 Fehler, 0 Warnungen : Kein Download möglich!
Last updated: 2024-05-24

Post by pernockham on Inheritence of struct, ^{CODESYS Forge talk (Post)}
Im looking for a way to define predefined version of the same structures through "extends"/inheritance. What I want to do is best shown with an example: TYPE log_item_val_type : ( BOOL_ := 0, INT_, REAL_, STRING_ ); END_TYPE TYPE LOG_DATA_BASE STRUCT val_type : log_item_val_type; (* value, name etc *) ENDSTRUCT ENDTYPE (* this/below is not possible as I understand from the compiler?? *) TYPE LOG_DATA_BOOL extends LOG_DATA_BASE : STRUCT val_type : log_item_val_type := log_item_val_type.BOOL_; END_STRUCT END_TYPE TYPE LOG_DATA_INT extends LOG_DATA_BASE : STRUCT val_type : log_item_val_type := log_item_val_type.INT_; END_STRUCT END_TYPE etc. for LOG_DATA_REAL and ..STRING. The system will not allow me to "re-define" "val_type" however. Instead I must do the work-around of defining four different types with all fields individually defined. The benefit if I could extend the base item would be that Im (more) sure the structures are identical. In usage I can call in a specific type rather use the base type and assign which type. Usage by pointer/ref to log_data_base would also be easier.. (* Usage: *) log_data : log_data_int := (name, value etc.) (* Instead of: *) log_data : log_data_base := (name, value, val_type).. Is this possible to achieve in some way that I have missed?
Last updated: 2025-03-05

Post by rabaggett on CODESYS control for Raspberry Pi 64 SL errors ^{CODESYS Forge talk (Post)}
Hi, I am trying to create a project using a raspberry pi, I have added the modules for the Pi and MCP3008. I have encountered som errors that I don't know how to track down. 1. The GPIOs give preprocessor errors, but I read that this does not prevent compiling. This seems to be true. I can build the empty project with no errors. 2. After adding a SPI master and MCP3008, the preprocessor errors double, but seem similar and the project again builds with no errors. 3. I add a DUT and GVL, with a function, and I get the following errors. They remain even if I delete these things. ------ Build started: Application: Device.Application ------- Typify code... [ERROR] crr: C0032: Cannot convert type 'Unknown type: 'ADR(GVL_Io_17160064_c083_41f8_9e53_208be7537753_HPS_7.Io_17160064_c083_41f8_9e53_208be7537753_HPS_7)'' to type 'POINTER TO IoConfigParameter' [ERROR] crr: C0077: Unknown type: 'GVL_Io_17160064_c083_41f8_9e53_208be7537753_HPS_7.Io_17160064_c083_41f8_9e53_208be7537753_HPS_7' [ERROR] crr: C0046: Identifier 'GVL_Io_17160064_c083_41f8_9e53_208be7537753_HPS_7' not defined Compile complete -- 3 errors, 0 warnings I attach the project. What am I doing wrong? Thanks!
Last updated: 2024-05-02

Post by fredashbolt on Dynamically Update JSON Payload ^{CODESYS Forge talk (Post)}
I am trying to generate a JSON payload populated with a value that updates for use with a telemetry system, the payload is to be published by MQTT. I have established the MQTT client and can publish a working JSON payload but I can't get the payload to update as the value (iValue) changes. I am using a timer to trigger the .SetValue function periodically, but the JSON will only give the value as it is when it is first initialized using xFirst IF statement. Any suggestions? Thanks VAR pJsonData : POINTER TO JSON.JSONData := factory.Create(); fb_JBuilder : JSON.JSONBuilder; diRootIndex, diObject1Index : DINT; iValue : INT := 10 ; jsonArrayWriter : JSON.JSONByteArrayWriter; wsJsonData : WSTRING(1000); xFirst : BOOL := TRUE; utf8JsonData : STRING(2000); diTempVal : DINT ; PublishTimer : TON ; END_VAR IF xFirst = TRUE THEN fb_JBuilder ( pJsonData := pJsonData , diRootObj => diRootIndex ) ; diObject1Index := fb_Jbuilder.SetKeyWithObject ( "Device" , diParentIndex := diRootIndex ) ; diTempVal := fb_Jbuilder.SetKeyWithValue ( "Temp" , iValue , diParentIndex := diObject1Index ) ; xFirst := FALSE ; END_IF PublishTimer ( IN := PublishTimer.Q = 0 , PT := T#5S ) ; IF PublishTimer.Q THEN fb_JBuilder.SetValue ( iValue , diTempVal ) ; END_IF jsonArrayWriter( xExecute := PublishTimer.Q , pwData := ADR(wsJsonData), udiSize := SIZEOF(wsJsonData), jsonData := pJsonData^, xAsyncMode := FALSE ) ; JSON.Stu.ConvertUTF16toUTF8( ADR ( wsJsonData ) , ADR ( utf8JsonData ) , SIZEOF ( utf8JsonData ) , bStrictConversion := TRUE ) ;
Last updated: 2026-03-10

Post by youness on No source code available (cip object) ^{CODESYS Forge talk (Post)}
Hi yotaro, hope your problem was resolved. I had the same, but with an other library title. This exception is not detected during compilation, but rather at a given position in the program (when switching to a given visualization). Although the exception is generated at this point, it does not involve the visualization in question. This error is due to one of 3 reasons: 1) A division by zero somewhere: The program is able to detect divisions by zero at compile time. But in the case of a variable, which takes a valid value at init and changes to 0 at a later stage. 2) An invalid pointer: (either because it has a value of 0, or because it points outside the memory reserved for the program) is being dereferenced. Locate any pointers or interfaces you have in the code and check them - you should also be wary of mixing inline modifications and pointers. 3) Array overflow: Generally when a processing operation is executed outside the array's definition range. Example: a write loop with n iterations is executed on an array of dimmension n-1. On the other hand, the error message may not appear. In the latter case, the error may have fatal consequences, as the overflow has induced writing to potentially forbidden memory areas. This problem can be explained by the fact that it's not always the adjacent memory areas of PLC_PRG that are overwritten, but the memory areas that are randomly allocated to the array during compilation. In this case, however, there is no entry in the log, so you need to integrate the "Implicit Check function", which checks the line of code generating the error. To integrate this functions, click on Application --> POU for implicit controls Regards,
Last updated: 2024-07-16

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