PRT provides the reserved Item type $UNKNOWN, which can be associated with a non-serialized item at the start of production.
Guidelines that must be followed when using this association are:
The association can only take place when a non-serialized Item passes a transition indicator.
The transition indicator must be configured as an Item type detector.
A CIMPLICITY Point must be configured to report positive identification of the Item type.
An application interface message can associate a non-serialized Item with an unknown Item type.
The Item type of the non-serialized item must be identified later in the production process.
Unexpected Item errors will apply to Non-serialized Items. (Out of sequence errors will apply to Serialized Items only.)
1. Items: defined.