Processing of Inspection Characteristics

Purpose

You use inspection characteristics to describe what is to be inspected and how the inspection is to take place. Inspection characteristics are assigned to inspection operations and are identified within an operation by a number.

To standardize processes, you can reference or copy master inspection characteristics. You can also copy inspection characteristics from other inspection plans into the current inspection operation or use reference operation sets.

Prerequisites
  • The operation must be created in the system.
  • The master records used (for example, inspection method, dynamic modification rule, sampling procedure, sampling scheme, code groups, selected sets, production resources/tools) have been created and released in the system.
  • In the basic data, the master inspection characteristic must have been created as:



    • A Reference characteristic, if it is to be referenced
    • A Complete copy model, if it is to be changed in the task list without first having to be unlocked
    • At least as an Incomplete copy model, if it is to be copied into the task list


Process Flow

  1. You call up the inspection characteristic overview for the inspection plan.
  2. Create the required inspection characteristics. You can use the following functions. You can:



    • Enter all data for an inspection characteristic manually.
    • Reference a master inspection characteristic (reference characteristic), to simplify data entry.
    • Copy a master inspection characteristic (complete or incomplete copy model) to simplify data entry.
    • Enter a standard text key (defined in Customizing) for a inspection characteristic. The system then automatically enters the data predefined in the standard text key into the required entry fields.
    • Enter a tolerance key on creation of a quantitative inspection characteristic. The system then automatically enters certain quantitative data according to the values predefined in the tolerance key.



By double-clicking on the desired fields (for example, characteristic number, short text), you switch to the corresponding detail screens.

  1. You can enter the following data:



    • Characteristic number (required field)
    • Proposal for characteristic control indicator (optional, defined in Customizing)
    • Quantitative or qualitative characteristic (you must make one entry)
    • Characteristic category (optional characteristic, conditional characteristic, required characteristic)
    • Recording type
    • Additional


control indicators for the characteristic (optional)

    • Internal characteristic ID. (You can store an additional characteristic description in this field. This description is used to identify a characteristic during electronic exchange of characteristic values; optional)
    • Data origin. (You use this field to assign a data source such as, handheld application, quality certificate. The system then copies data from this source; optional)
    • Master inspection characteristic (optional) with plant and version for the characteristic (required entry field, if a master inspection characteristic was specified)
    • Short text for the inspection characteristic (optional)
    • Long text for the inspection characteristic (optional)
    • Tolerance key (optional)
    • Dependent characteristic specifications (optional)
    • Information for inspection method (name, plant, version)
    • Selected set (for qualitative characteristics with characteristic attributes)
    • Formula (optional, for quantitative characteristics)
    • Partial sample (optional)
    • Info fields (optional)



  1. Enter the following additional data, as required:



    • Information for quantitative data (for example, SPC criteria, plausibility limits)
    • Information for catalogs (for example, defect codes in case of rejection)
    • Information for the sample (for example, sampling procedures, dynamic modification rules)
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  1. You assign an item of test equipment to the inspection characteristic as a production resources/tool (PRT), if you want to inspect with particular test equipment.


The test equipment must first be assigned to the operation as a production resource/tool.

  1. Save the data.


The authorization for entering data at inspection characteristic level is controlled by the authorization object for the characteristics contained in the task list.
Result

You have created an inspection plan with inspection characteristics that you can use in inspections.