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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 ..(_ISignature , _IPreCompileContext ) bei ..( ) bei ..(String ) bei ..(String , IVariable[]& , ISignature[]& ) bei ..(String , IVariable[]& , ISignature[]& , IScope& ) bei ..visit(_IVariableExpression , AccessFlag ) bei ..(_IUserdefType ) bei ..(_IVariable , IScope5 , _ICompileContext , _ISignature ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei ..(_ISignature , _IPreCompileContext ) bei ..( ) bei ..(String ) bei ..(String , IVariable[]& , ISignature[]& ) bei ..(String , IVariable[]& , ISignature[]& , IScope& ) bei ..visit(_IVariableExpression , AccessFlag ) bei ..(_IUserdefType ) bei ..(_IVariable , IScope5 , _ICompileContext , _ISignature ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei ..(_ISignature , _IPreCompileContext ) bei ..( ) bei ..(String ) bei ..(String , IVariable[]& , ISignature[]& ) bei ..(String , IVariable[]& , ISignature[]& , IScope& ) bei ..visit(_IVariableExpression , AccessFlag ) bei ..(_IUserdefType ) bei ..(_IVariable , IScope5 , _ICompileContext , _ISignature ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei ..(_ISignature , _IPreCompileContext ) bei ..( ) bei ..(String ) bei ..(String , IVariable[]& , ISignature[]& ) bei ..(String , IVariable[]& , ISignature[]& , IScope& ) bei ..visit(_IVariableExpression , AccessFlag ) bei ..(_IUserdefType ) bei ..(_IArrayType ) bei ..(_IPointerType ) bei ..(_IVariable , IScope5 , _ICompileContext , _ISignature ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei ..(_ISignature , _IPreCompileContext ) bei ..( ) bei ..(String ) bei ..(String , IVariable[]& , ISignature[]& ) bei ..(String , IVariable[]& , ISignature[]& , IScope& ) bei ..visit(_IVariableExpression , AccessFlag ) bei ..(_IUserdefType ) bei ..(_IPointerType ) bei ..(_IVariable , IScope5 , _ICompileContext , _ISignature ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei ..(_ISignature , _IPreCompileContext ) bei ..( ) bei ..(String ) bei ..(String ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei ..(_ISignature , _IPreCompileContext ) bei ..( ) bei ..(String ) bei ..(String ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei ..(_ISignature , _IPreCompileContext ) bei ..( ) bei ..(String ) bei ..(String ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei ..(_ISignature , _IPreCompileContext ) bei ..( ) bei ..(String ) bei ..(String , IVariable[]& , ISignature[]& ) bei ..(String , IVariable[]& , ISignature[]& , IScope& ) bei ..visit(_IVariableExpression , AccessFlag ) bei ..(_IUserdefType ) bei ..(_IVariable , IScope5 , _ICompileContext , _ISignature ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei ..(_ISignature , _IPreCompileContext ) bei ..( ) bei ..(String ) bei ..(String , IVariable[]& , ISignature[]& ) bei ..(String , IVariable[]& , ISignature[]& , IScope& ) bei ..visit(_IVariableExpression , AccessFlag ) bei ..(_IUserdefType ) bei ..(_IVariable , IScope5 , _ICompileContext , _ISignature ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei ..(_ISignature , _IPreCompileContext ) bei ..( ) bei ..(String ) bei ..(String , IVariable[]& , ISignature[]& ) bei ..(String , IVariable[]& , ISignature[]& , IScope& ) bei ..visit(_IVariableExpression , AccessFlag ) bei ..(_IUserdefType ) bei ..(_IPointerType ) bei ..(_IVariable , IScope5 , _ICompileContext , _ISignature ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei ..(_ISignature , _IPreCompileContext ) bei ..( ) bei ..(String ) bei ..(String ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei ..(_ISignature , _IPreCompileContext ) bei ..( ) bei ..(String ) bei ..(String ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei ..(_ISignature , _IPreCompileContext ) bei ..( ) bei ..(String ) bei ..(String , IVariable[]& , ISignature[]& ) bei ..(String , IVariable[]& , ISignature[]& , IScope& ) bei ..visit(_IVariableExpression , AccessFlag ) bei ..(_IUserdefType ) bei ..(_IVariable , IScope5 , _ICompileContext , _ISignature ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei ..(_ISignature , _IPreCompileContext ) bei ..( ) bei ..(String ) bei ..(String , IVariable[]& , ISignature[]& ) bei ..(String , IVariable[]& , ISignature[]& , IScope& ) bei ..visit(_IVariableExpression , AccessFlag ) bei ..(_IUserdefType ) bei ..(_IVariable , IScope5 , _ICompileContext , _ISignature ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei _3S.CoDeSys.Compiler35140.Compiler.(_ICompileContext , _IPreCompileContext , _ICompileContext , IProgressCallback ) bei _3S.CoDeSys.Compiler35140.Compiler.(_ICompileContext , Boolean , Boolean , _IPreCompileContext , _IPreCompileContext , _ICompileContext , Boolean , Boolean& , IProgressCallback ) bei _3S.CoDeSys.Compiler35140.Compiler.(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 sedoerr on Warnung C0373 / Dialog nicht instanziert ^{CODESYS Forge} ^talk ^(Post)
Hallo Leute, in meinem Projekt bekomme ich mehrfach folgende Warnung beim Übersetzen: C0373: Dialog <visudialogs.textinputwithlimits> ist in der Applikation nicht instanziert. Fehlt er im Visualization Manager?</visudialogs.textinputwithlimits> Was genau möchte mir Codesys damit sagen bzw. wie bekomm ich diese Warnung behoben? MFG
Last updated: 2023-08-29

Post by eschwellinger on onewire bus master stop working after 4.8.0.0 upgrade ^{CODESYS Forge} ^talk ^(Post)
du musst Onewire in einer eigenen Task aufrufen, das sind blockierende Aufrufe das geht nur in eigener Task, hab hier mal im Forum ein Beispiel gepostet
Last updated: 2023-09-20

Post by eschwellinger on SysFileOpenAsync ^{CODESYS Forge} ^talk ^(Post)
should work, but meanwhile due security reason only readings allowed in /var/opt/codesys/PlcLogic directory /dev/input/event1 need then to be added in config file
Last updated: 2024-07-16

Post by andreiot40 on Step motor ECT60 Ethercat in codesys 3.5 ^{CODESYS Forge} ^talk ^(Post)
Thanks for your response. for Master in log i have : no slaves found, Interface could not be opened, could not open network adapters. Status : Not running FOR ETC60 There is nothing !!!
Last updated: 2024-08-15

Post by pietrobalint on Retain / Persistent Variables in Codesys for Raspberry Pi ^{CODESYS Forge} ^talk ^(Post)
Hi, I am very new in Codesys so let me apologize for my dumb question. Could you explain how to impement this code mentioned before? Thank you very much!
Last updated: 2024-08-17

Post by damian177 on Codesys Control for Linux SL ^{CODESYS Forge} ^talk ^(Post)
In /etc/CODESYSControl.cfg I only added: [SysCom] Linux.Devicefile=/dev/ttyS Is ok ? Now in Codesys I should have mapping like below : COM1 - ttyS0 COM2 - ttyS1 ?
Last updated: 2024-09-08

RPI can system operation like rm in a shell have an impact on a Task cycle time ^{CODESYS Forge} ^talk ^(Thread)
RPI can system operation like rm in a shell have an impact on a Task cycle time
Last updated: 2024-09-27

Post by kislov on CODESYS Modbus 4.4.0.0 - Modbus network redundancy ^{CODESYS Forge} ^talk ^(Post)
Hi. There is next information in CODESYS Modbus 4.4.0.0 Release Notes: "Modbus network redundancy" How to use this feature? As I understand, new fields in STUCT ModbusTCPComSettings are associated with it, but more detailed information is needed.
Last updated: 2024-10-07

Post by pernockham on Is there a pragma for init/instantiation of local variables in FB (like in Methods) ^{CODESYS Forge} ^talk ^(Post)
Never seen VAR_TEMP before, but seems to be what I was looking for! Thank you!!
Last updated: 2024-11-05

Post by timo on String nach erlaubten/unerlaubten Zeichen durchsuchen ^{CODESYS Forge} ^talk ^(Post)
Vielen Dank. Das ist natürlich etwas eleganter zu prüfen ob ein ASCII Wert von meinen Zeichen abweicht. Der INT Zähler ist bei dir in der Deklaration anders benannt als im Code, aber das Konzept in meinem Code integriert funktioniert scheinbar.
Last updated: 2025-01-21

Post by codesysbeginner on Enable and Disable Project IO programmatically ^{CODESYS Forge} ^talk ^(Post)
@eschwellinger Somehow this code doens't work for me in Codesys V3.5.19. Is this code supposed to work in simulation mode as well?
Last updated: 2025-03-03

Post by fil on Using Latch Variable in Alarm as input from text list ^{CODESYS Forge} ^talk ^(Post)
Good morning, I am currently working on a project where this would be of enormous value. Any input would be very welcome - thanks in advance. Best regards Fil
Last updated: 2025-03-06

[Bug report] Issue with Importing XML Files Containing "POINTER TO" Variables in Codesys Platform Plugins Versions 2.7 and 2.8 ^{CODESYS Forge} ^talk ^(Thread)
[Bug report] Issue with Importing XML Files Containing "POINTER TO" Variables in Codesys Platform Plugins Versions 2.7 and 2.8
Last updated: 2025-03-26

Post by sercan on Connecting Parameter 'A' in G-Code to Physical Axis in CNC Project ^{CODESYS Forge} ^talk ^(Post)
Solutions: * https://content.helpme-codesys.com/en/libs/SM3_CNC/Current/SM_CNC_Data-types/SoftMotion-CNC/SMC_POSINFO.html * https://content.helpme-codesys.com/en/CODESYS%20SoftMotion/_sm_example_external_axes_usage.html
Last updated: 2025-05-07

Post by jzhvymetal77 on Special Chars in Visualizationfor QR code string ^{CODESYS Forge} ^talk ^(Post)
Ok I'm closer as I switch using WSTRING but in Visualization it does not respect LINE BREAKS. Instead it shows $n. See attached image.
Last updated: 2025-09-29

Not able to create an OPC UA certificate in my Beaglebone Black (linux Debian) on CODESYS 3.5 SP19 ^{CODESYS Forge} ^talk ^(Thread)
Not able to create an OPC UA certificate in my Beaglebone Black (linux Debian) on CODESYS 3.5 SP19
Last updated: 2023-05-28

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 lostcontrol on Bool turning on in case stament in wrong state? ^{CODESYS Forge} ^talk ^(Post)
are you sure it is not used anywhere else.? does it have an address that could be duplicated perhaps? nothing external writing to it?
Last updated: 2023-12-16

Post by nano on Library for arrays ^{CODESYS Forge} ^talk ^(Post)
habe a look at __new and __delete operators. have in mind that in this case u have a look at memory see https://help.codesys.com/api-content/2/codesys/3.5.15.0/en/_cds_operator_new/
Last updated: 2024-01-14

Post by dkugler on Toggling Visualizations using HMI Physical Buttons ^{CODESYS Forge} ^talk ^(Post)
learn to program in structured text or CFC and forget this antique ladder logic.. I'm not firm to do that in ladder
Last updated: 2024-02-13

Post by elektron785 on CAN-Bus in Demo-Version ^{CODESYS Forge} ^talk ^(Post)
Es funktioniert nun. Ich hatte die SYNC-Erzeugung im CANOpen-Manager vergessen. Mit dessen Aktivierung empfange ich die Daten in der Soft-SPS. Vielen Dank für die Hilfe bis hierhin :) Btw: Die PDO's waren standardmäßig als Übertragungstyp zyklisch-synchron eingestellt.
Last updated: 2024-02-14

Post by i-campbell on IIOT MQTT Subscription ^{CODESYS Forge} ^talk ^(Post)
I think it is a similar issue, but different. I saw you use AWS IoT Core. AWS limits you in this - search in page here for text "Subscriptions per connection" it is 50, cannot be changed.
Last updated: 2024-02-20

Post by seweb on NTCIP ^{CODESYS Forge} ^talk ^(Post)
Hello everybody, In an upcoming project we are supposed to control a display board via NTCIP. Unfortunately, I have not yet found out whether this is possible with CODESYS. Are there any libraries for this in CODESYS? Best regards
Last updated: 2024-03-14

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