Open a TwinCAT 3 PLC project
- TwinCAT XAE is started. A TwinCAT project is open.
- 1. Mark the PLC object in the view Solution Explorer and select the command Add Existing Item in the menu Project or the context menu.
- 2. In the dialog Open, select the desired TwinCAT 3 PLC project or project archive or a library from the file system. To search, you can set the file filter in the bottom right-hand corner of the dialog.
- 3. Click Open.
- The following cases are possible:
- You have selected a project that was saved with a newer TwinCAT version:
Such a project may contain data that cannot be loaded. You can still open the project, but you need to consider the following: The project may behave in an unexpected manner because it cannot be completely interpreted. Objects that TwinCAT 3 could not load completely or at all are marked in the view Solution Explorer in red and with the text "[unknown]" or "[incomplete]". TwinCAT cannot display objects in the editor that are unknown in the current version. TwinCAT displays incomplete objects in the editor with a warning that the displayed content may not correspond to the original. TwinCAT cannot save incomplete projects under their original name. This is indicated by a write-protection note in the top right-hand corner. You can save the file under a different name. - You have selected a project after whose last change TwinCAT was not regularly closed, but the project option Auto Save was enabled:
You will now see the Auto Save Backup dialog for handling the backup copy.
See also: