Data Collection Maintenance

You use this activity to define DC groups. DC groups contain data parameters that allow you to collect data values at various points in the manufacturing process. You can collect data for materials, operations, routing steps, and resources. For more information, see Data Collection (DC).

This activity allows you to do the following:

Collect custom data for DC groups
Create data parameters
Assign control limits
Assign SPC chart for SPC analysis (see Statistical Process Control (SPC))

Fields

The following tables describe fields requiring explanation:

Main Tab Page
Field	Description
Status	The status of the DC group Releasable: Users can use the DC group without any restriction. It appears during data collection. New: Users cannot use this DC group, but they can change the record. It does not appear during data collection. Hold: Users cannot use this DC group. This status is temporary. When the hold issue is resolved, users can change the status of this record. It does not appear during data collection. Frozen: Users can use this DC group. It appears during data collection. Obsolete: Users cannot use this DC group. This DC group is no longer used. It does not appear during data collection.
Collection Type	SFC: The collected parameter values are associated with an SFC number. Resource: The collected parameter values are associated with a resource. Work Center: The collected parameter values are associated with a work center.
Collect Data At	Defines when the data collection should occur during production. Start/Complete: Collects data during both the Start and Complete transactions Start Only: Collects data only during the Start transaction Complete Only: Collects data only during the Complete transaction Anytime: Collects data at any stage of the operation except for Start or Complete transactions
Collection Method	Identifies how the data is collected Manual – Single: Collects data individually for each SFC number Manual – Multiple: Collects data once for a group of SFC numbers (data parameter values are copied to each SFC number)
ERP Group	If selected, data parameters of the current DC group are passed to SAP ERP. Note that this checkbox is visible only if the ERP Integration Active system rule is set to `true`.
Pass/Fail Group	If selected, the current DC group is a pass/fail group. Note that if you select this checkbox, the system selects and disables the Override Min/Max checkbox on the Main tab page of the Parameter Detail screen.
User Authentication Required	If selected, users must identify themselves with the user name and password before collecting data for the DC group.
Certification	Specifies that the operator certification is required for entering the data collection Note For separate logins for each certified user, you can set the `PROCESS_ALL_DC_GROUPS` rule to `false` in Activity Maintenance after retrieving `DC500`. If you want to use a single login and display all DC groups on one page, you can set the `PROCESS_ALL_DC_GROUPS` rule to `true` and assign the user who will log in to all certifications whose DC groups you want to display on the page. End of the note.

Main Tab Page on the Parameter Detail Screen
Field	Description
Sequence	The order in which data is collected when there are multiple data parameters to collect. If multiple data parameters have the same sequence number, they are collected in alphabetical order.
Parameter Name	The name of the information for which you are collecting data
Allow Missing Values	Allows an operator to save the collected data parameter values with missing values. The user can then use the DC Edit activity to replace the default missing value character of M, unless defined differently in the `LocaleSpecificText.properties` file.
Display Data Values	If selected, the Type, Mask, Min Value, Max Value, Unit of Measure, and Required Data Entries field values appear in the DC list of the DC plug-in
Type	Numeric: The type of the collected information is numeric. Boolean: The type of the collected information is boolean. The choices are defined in the 0 Value and 1 Value fields. Note that selecting the Boolean option disables Min Value, Max Value, and Mask fields, and the Override Min/Max checkbox. Formula: The collected information is calculated according to the formula that the user enters. Note that selecting the Formula option activates the Formula pushbutton and disables the 0 Value and 1 Value fields. Text: The type of the collected information is textual but numbers are allowed. Note that selecting the Text option disables the Min Value and Max Value fields. Note that selecting the Numeric, or Formula options enables all the fields on the SPC tab page.
Override Min/Max	If selected, allows operators to enter values beyond the range of the values defined in the Min Value and Max Value fields Note that selecting this checkbox enables the Certification field.
Min Value	The minimum value that an operator can enter during the data collection. If blank, no minimum value restrictions are placed on the data collected.
Mask	The metacharacter string of the mask The following metacharacters are valid: `@` (At symbol): Any single alphabetic character (A through Z) `#` (Number symbol): Any single digit (0 through 9) `^` (Carat symbol): Any single hex character (0 through 9, A through F) `?` (Question mark): Any single alphanumeric character (0 through 9, A through Z) `.` (Period): A wildcard character that represents any single ASCII character `` (Asterisk): Any number (including 0) of any characters. The asterisk can be used only once in the mask. `\` (Backslash): Allows other metacharacters to be used as literal characters. For example, to include the character @ in your mask, enter \@. Note Any other character in the mask is interpreted as a literal one. End of the note. For example, if you specify `@@###`, the following values are possible: AA123, XY001, or QW456*. For more information, see Setting Up Mask Validation.
Required Data Entries	The number of required entries for the parameter that must be collected
Optional Data Entries	The number of optional entries for the data parameter
Formula	The system launches a Java script screen for entering the formula scripts.

SPC Tab Page on the Parameter Detail Screen
Field	Description
Perform SPC Analysis	If selected, the SPC analysis is performed to generate the SPC chart
Short Run	If selected, the short run data can be defined for the current chart
Display Chart	Never: SPC charts never appear during data collection. Always: SPC charts always appear during data collection. Only Alarm: SPC charts appear only when an SPC trend rule warning or violation occurs.
Expression Builder	Enables changing the values collected for the SPC charts. For example, Log (@X), where the logarithm of the entered value is used.
Check Syntax	Executes the Statit application to test the syntax of the expression entered in the Expression Builder field