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Example documentationExample: Collecting Environmental Data for SFC Numbers

 

The following procedure includes steps that the operator might perform collecting environmental data for SFC numbers at the start and end of an operation.

Prerequisites

  • You have configured Data Collection and SPC and defined the following objects:

    SAP ME Object

    Object Name

    Comments/Configuration

    Material

    ACME_WIDGET

    associated with the WIDGET routing

    Operation

    MAKE_WIDGET

    Routing

    WIDGET

    Contains the operation MAKE_WIDGET; assigned to the ACME_WIDGET material

    SPC Chart

    PART_TEMP_XBAR_R

    Main tab page of SPC Chart Maintenance:

    • Chart Type — Xbar & R

    • Subgroup Size — 3

    • Max Plot Points — 30

    • Max Data Age (Days) — 365

    Primary Chart Details tab page:

    • Control Limit Options — Calculated

    • Sigma Coefficient — 3

    • Upper Spec Limit — 72

    • Target — 70

    • Lower Spec Limit — 68

    • Display Spec Limits on Chart — selected

    • Enable Trend Rules — selected

    • Trend Rules — AT&T Rules

    Secondary Chart Details tab page:

    • Control Limit Options — Calculated

    • Sigma Coefficient — 3

    • All other fields are blank or deselected.

    DC Group

    ENV_PARMS_START

    • Collection Type — SFC

    • Collect Data At — Start

    • Collection Method — Manual-Single

    Data parameters:

    • PART_TEMP (Part Temperature)

      associated with the PART_TEMP_XBAR_R SPC chart

    • HUMIDITY (Ambient Rel. Humidity)

      attached to the operation MAKE_WIDGET; unit of measure — Percent

    ENV_PARMS_COMPLETE

    • Collection Type — SFC

    • Collect Data At — Complete

    • Collection Method — Manual-Single

    Data parameters:

    • PART_TEMP (Part Temperature)

      associated with the PART_TEMP_XBAR_R SPC chart; unit of measure — Deg. F

    • HUMIDITY (Ambient Rel. Humidity)

      attached to the operation MAKE_WIDGET; unit of measure — Percent

    TEMP_ANYTIME

    • Collection Type — SFC

    • Collect Data At — Anytime

    • Collection Method — Manual-Single

    Data parameter PART_TEMP (Part Temperature)

    associated with the PART_TEMP_XBAR_R SPC chart and attached to the operation MAKE_WIDGET; unit of measure — Deg. F

    For more information, see Setting Up Data Collection and Setting Up Statistical Process Control (SPC).

  • You have created a new Operation type POD and associated the Start and Complete buttons with DC Group List (DC_LIST_DISPLAY) (see Operation PODs and DC Group List).

  • You have created and released 2 SFC numbers for the material ACME_WIDGET (see Create and Release SFC).

Procedure

  1. Open the Operation type POD configured for data collection.

  2. Enter the MAKE_WIDGET in the Operation field.

  3. Enter the first SFC number.

  4. Choose Start.

    The DC Group List plug-in appears.

  5. Select a row for the DC group ENV_PARMS_START.

  6. Choose DC Collect.

    The Data Collection Entry plug-in appears.

  7. Enter 70 for Part Temperature.

  8. Enter 45 for Ambient Rel. Humidity.

  9. Save your entries.

  10. Choose Close in the DC Group List plug-in.

    The SFC number's status changes to Active (see SFC Number).

  11. Choose DC Collect in the POD.

    The DC Group List plug-in appears.

  12. Select a row for the DC group ENV_PARMS_COMPLETE.

    The DC Collect button in the DC Group List plug-in is not enabled.

  13. Select a row for the DC group TEMP_ANYTIME.

  14. Choose DC Collect in the DC Group List plug-in.

    The Data Collection Entry plug-in appears.

  15. Enter 71 for Part Temperature.

  16. Save your entries.

    SPC Display pop-up window appears.

  17. Close the SPC Display pop-up window.

  18. Repeat steps 14 –17 two times with the values of 71.3 and 71.5.

  19. Choose Close in the DC Group List plug-in.

  20. Choose Complete in the POD.

    The DC Group List plug-in appears.

  21. Select a row for the DC group ENV_PARMS_COMPLETE.

  22. Choose DC Collect in the DC Group List plug-in.

    The Data Collection Entry plug-in appears.

  23. Enter 71 for Part Temperature.

  24. Enter 43 for Ambient Rel. Humidity.

  25. Save your entries.

  26. Choose Close in the DC Group List plug-in.

    The SFC number's status changes to Complete (see SFC Number).

  27. Enter the second number of the SFCs created.

  28. Choose Start.

    The DC Group List plug-in appears.

  29. Select a row for the DC group ENV_PARMS_START.

  30. Choose DC Collect.

    The Data Collection Entry plug-in appears.

  31. Enter 71 for Part Temperature.

  32. Enter 45 for Ambient Rel. Humidity.

  33. Save your entries.

  34. Choose Close in the DC Group List plug-in.

    The SFC number's status changes to Active.

  35. Choose DC Collect in the POD.

    The DC Group List plug-in appears.

  36. Select a row for the DC group ENV_PARMS_COMPLETE.

    The DC Collect button in the DC Group List plug-in is not enabled.

  37. Select a row for the DC group TEMP_ANYTIME.

  38. Choose DC Collect in the DC Group List plug-in.

    The Data Collection Entry plug-in appears.

  39. Enter 71 for Part Temperature.

  40. Save your entries.

  41. Repeat steps 38 – 40 two times with the values of 72 and 73.5.

    The SPC Display pop-up window appears.

    The SPC chart PART_TEMP_XBAR_R contains an alarm indicator that a trend rule has been matched.