Search talk: Object reference not set to an instance of an object

 
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Post by tk096 on Velocity is too low even though correct value is reported CODESYS Forge talk (Post)
Hi, are you sure that you set up the scaling in the Scaling/Mapping tab correctly?
Last updated: 2025-06-12

Post by micik on Download EtherCAT project on SoftPLC (ControlWin-V3 x64) CODESYS Forge talk (Post)
Hello, I have almost exactly problem already discussed here in this old thread: https://forge.codesys.com/forge/talk/Engineering/thread/03af9426eb/ However, this is quite old and I assume not completely relevant. In my case, I use v3.5.20 on windows 11, so Winpcap is no longer supported on newer OS. Also, this hint about adding entry to the .cfg file under ProgramFiles(x86) is also not relevant anymore. I guess, I need to add entry SysEthernet to this .cfg file: C:\ProgramData\CODESYS\CODESYSControlWinV3x64...\CODESYSControl.cfg like this one: [ComponentManager] Component.1=CmpTargetVisuStub Component.2=CmpWebServer Component.3=CmpWebServerHandlerV3 Component.4=SysCpuMultiCore Component.5=SysReadWriteLock Component.6=SysCpuBreakpoints Component.7=SysPipeWindows Component.8=SysEthernet But I'm not sure about Npcap vs WinpCap. Please, if applicable, update these instructions.
Last updated: 2024-08-08

Post by i-campbell on build (F11) / generate code using a python script file CODESYS Forge talk (Post)
hello, please enjoy. # i-campbell 2024 import subprocess from scriptengine import * # with a project already open # save if not yet saved # check pool objects if it is a library # generate code only for the active application if it is a project # beep thanks to https://devblogs.microsoft.com/scripting/powertip-use-powershell-to-send-beep-to-console/ if projects.primary: # check project is open if projects.primary.dirty: # save projects.primary.save() if projects.primary.path.lower().endswith('.library'): projects.primary.check_all_pool_objects() # check all pool objects for lib else: projects.primary.active_application.generate_code() # generate if not lib # note, there could be more applications than the active application, # this script does not generate those else: system.write_message(Severity.Error,'no project open') ps_output = subprocess.check_output(["powershell", "-Command", "[console]::beep(500,300)"]) # beep
Last updated: 2024-04-10

Post by drno on Konfigurierte Compilerversion in Installation nicht verfügbar CODESYS Forge talk (Post)
Hallo, bedingt durch einen Rechnerwechsel musste ich verschiedene Codesys-Versionen wieder neu installieren, bzw. habe mit dem Codesys-Installer beim Setup einer neuen Version Add-ons einer bestehenden Installation importiert. Nun möchte ich ein bestehendes Projekt, welches auf einem Zielgerät mit recht alter Runtime läuft öffnen, dabei kommt der error "C0510: The configured compilerversion '3.5.8.0' is not available in your installation". Auf dem alten Rechner wurde mit CODESYS V3.5 SP18 Patch 4 eben mit der Compilerversion 3.5.8.0 übersetzt, beim Erstellen des Projektarchives geht jedoch der Compiler nicht mit und so kommt es auf dem neuen Rechner mit der Installation V3.5 SP18 Patch 4 zu diesem error. Übersetze ich das Projekt mit dem aktuellen Compiler, kommt eine ganze Latte an Fehlermeldungen. Gibt es eine Möglichkeit die Compilerversion 3.5.8.0 in die Installation 3.5.18.4 zu bekommen? Danke, schöne Grüße
Last updated: 2023-12-01

Post by dexterdva on Creating a custom kinematics starting from Scara2 model. CODESYS Forge talk (Post)
Hello, I'm trying to develop a custom kinematics derived to Kin_Scara2_Z. there is someone that have the source code of this library? Thanks Dexter
Last updated: 2023-09-11

Post by installwhat on What is the solution for "Application stopped on recovery switch request"? CODESYS Forge talk (Post)
Well still similar questions remain. I don't know of "CmpRecoverySwitch" and the only thing google has to offer is your xml file. I think you'd need to provide a lot more info before anyone makes much effort here.
Last updated: 2024-07-09

Post by rmaas on How to use/create SOTU in LD program CODESYS Forge talk (Post)
You can use the R_TRIG and F_TRIG function blocks to generate a pulse in Rising or Falling edge of your signal. Have a look here: https://content.helpme-codesys.com/en/libs/Standard/Current/Trigger/R_TRIG.html
Last updated: 2024-07-11

Post by vstrom on Extended Alarm description for a alarm selected in Alarm Table CODESYS Forge talk (Post)
Does anybody know how I can display a popup with details of the selected alarm in the alarm table? I'd like to help the operator about the reason for the alarm occur and which are to do. Thanks a lot.
Last updated: 2024-07-16

Post by vstrom on Extended Alarm description for a alarm selected in Alarm Table CODESYS Forge talk (Post)
Does anybody know how I can display a popup with details of the selected alarm in the alarm table? I'd like to help the operator about the reason for the alarm occur and which are to do. Thanks a lot.
Last updated: 2024-07-16

Post by elayaraj on Codesys Soft PLC OPC UA server CODESYS Forge talk (Post)
Hi guys, I also facing the same issue on my project, trying to connect server (Codesys) to UA Expert but the connection keep failed(attached). Im running out of idea right now..please help!
Last updated: 2024-08-22

Post by jari-koivuluoma on Get text from textlist CODESYS Forge talk (Post)
Are your texts WSTRING? maybe you should try WSTRING versions. I have a vague memory of having to switch to TextListUtils library also.
Last updated: 2024-09-19

Post by etienneneu on loading delay with the option "check client animations and overlay of native elements" CODESYS Forge talk (Post)
Hello Markus, Unfortunately, I haven't been able to find a suitable solution to the problem yet. Best regards, Etienne
Last updated: 2024-11-05

Post by gseidel on Beckhoff EL7037 softmotion CODESYS Forge talk (Post)
Hi Stefan, we will update our driver to support the EL7037 in our next release of SoftMotion. In case you are interested to test a pre-release, please contact our support and mention this forum post. Best regards, Georg
Last updated: 2024-12-23

Post by timvh on "Do you really want to perform" dialog boxes CODESYS Forge talk (Post)
Double click on the device (communication settings). At the top of this Window, go to Device -Options. Disable the option "Confirmed online mode".
Last updated: 2025-02-15

Post by mariacugnier on Modbus TCP/IP having problems with global variables CODESYS Forge talk (Post)
Are these variables already declared in the IO list? It looks like it's trying to create new variables instead of mapping them to the existing ones.
Last updated: 2025-05-22

Post by canplum on Codesys 3.5.21 fails to copy file to USB CODESYS Forge talk (Post)
Hello Dave_t, thank you for your reply but the modifications of the config files are already done. Unfortunatealy with no success until now. Cheers, canplum
Last updated: 2025-05-26

Post by bruceae on Allen Bradley to Codesys conversion CODESYS Forge talk (Post)
Hello Everyone, I was hoping to get some assistance or general directions on the codesys equivalent of some Studio 5000 commands and data types; Data Types; SCK_TCP Commands; CPS
Last updated: 2025-08-08

Post by reinier-geers on JSON (WString format) accessing elements. Convert to STRUCT? CODESYS Forge talk (Post)
HI , Ill try the same with Energy prices. But no data I add the Query to the wsPost. Add $ because wstring use "as start end end. Here the link of the API info https://reversed.notion.site/Marktprijzen-API-89ce600a88ac4abe8c2ad89d3167a83e
Last updated: 2025-10-09

Post by reinier-geers on JSON (WString format) accessing elements. Convert to STRUCT? CODESYS Forge talk (Post)
HI , Ill try the same with Energy prices. But no data I add the Query to the wsPost. Add $ because wstring use "as start end end. Here the link of the API info https://reversed.notion.site/Marktprijzen-API-89ce600a88ac4abe8c2ad89d3167a83e
Last updated: 2025-10-09

Post by eschwellinger on Raspberry Pi CODESYS Forge talk (Post)
Which RaspberryPi OS - have you installed on the PI? At the moment, there is a problem with latest Bookworm from December. You need to downgrade to October version of the OS - or wait 4.11.0.0. is released ( February) https://downloads.raspberrypi.com/raspios_armhf/images/ 2023-10-10 16:13 Version will work.
Last updated: 2023-12-28

Post by giackanto on Eoe issues with Windows and Linux CODESYS Forge talk (Post)
I tried to change the name of the tap device to 'tap0,' but nothing changed. I don't think this is the problem.
Last updated: 2024-01-10

Post by reinier-geers on Pointer Axis CODESYS Forge talk (Post)
I want to make a FB of MC. But i need a variable for Axis. How do i have to declare that ? ptAxe : AXIS_Ref_SM3; //:= SM_Drive_ETC_Delta_ASDA_A2 ; this is somehowe a problem
Last updated: 2024-01-12

Post by dim54 on MBChannel CODESYS Forge talk (Post)
Hello! I am interested in the Modbus Slave channel parameter uiReadLength to use in the ST-program (see picture). How to read the value of uiReadLength in a ST-program? Only Edwin the Great and Terrible can answer this question.
Last updated: 2024-01-22

Post by masmith1553 on C0564 Warning Message CODESYS Forge talk (Post)
Thank you for the reply. I was able to use this attribute in both of my Network Variable List Sends to clear the warnings.
Last updated: 2024-01-30

Post by jaspergain on Access to the path *** is denied CODESYS Forge talk (Post)
Hello @eschwellinger, I installed the newer version of the installer, however the issue persisted. Do I need to do anything else other than updating the installer? Thanks for your help.
Last updated: 2024-02-01

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