In IEC mode, tags cannot be given local addresses by the user.

If you delete auto-generated tags and want to get them back, open the IO configuration wizard (IO Allocation > Expansion) and reconfigure the module. Just click the dropdown menu and select the configuration that you want, even if it is already set to that configuration. Click “Confirm” and close the wizard.

The program should pause briefly as the auto-generated tags are created again.

Check in the tag library for the newly generated tags.