How to debugging a Visu Exception if there is an Visu exception shown in the Visualization:


Step-by-step guide

Use the following Option:

  1.  Execute Tools -> Customize - 'Add command..' -  Category „Online“  - Stop execution on handled exception


If then the exception occurs, the IEC code where this happens can be analyzed (see also OLH: PLC Log).


When the error occurs from one of the CODESYS visualization elements, this then must be investigated.
In this case, please contact us and send us a full project archive
(with an Callstack and a Coredump, which was created together with the associated project)
and please set/add the compiler-define VISU_NO_EXCEPTION_HANDLING under the 'Application' - 'Properties' - 'Build' Tab:



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If you need technical support, please purchase a Support Ticket in the CODESYS Store.

  • Please note that certain products in the CODESYS Store already include a Support Ticket.
  • More detailed information will be given to you when you buy the products or will be sent to the purchaser and can be accessed there.

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See also....