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Error (Safety Library Parser): Error parsing the library '...': Invalid or missing definition for the POU '...'.

The definition of the library POU mentioned in the error message is not correct or missing. Possibly, the library file is corrupted or has been replaced by a wrong library version.

Remedy

  1. Delete the included library: left-click the library icon in the 'Libraries' tree (COMPONENTS area, 'Libraries' category) and press <Del>.
  2. Add the library again. If available, observe version information to make sure that the correct library version is going to be included.
    1. In the COMPONENTS area, right-click the 'Libraries' folder in the 'Libraries' category.
    2. Select 'Add Library'.
    3. In the appearing browse dialog, browse for the library (*.pcwlx file) to be added to the project and click 'Open'.
  3. If the error is still reported, reinstall PLCnext Engineer.

If the error is still reported, contact the technical support of Phoenix Contact.