Set up backflushing

The parameter settings that control backflushing are explained using an example:

The following items have been defined :

  • CLOCK
  • PIN

The PIN item is used as a component for the CLOCK item in a task called ASSEMBLE.

Backflushing of materials

Use the following settings in the Items - Production (tiipd0101m000) session to set up the items for backflushing:

  • Select the Backflush if Material check box for the PIN item.
  • Select the Backflush Materials check box for the CLOCK item.

When you create a production order, these check boxes determine the default settings of:

  • The Backflush Materials check box in the Estimated Materials (ticst0101m000) session (for PIN).
  • The Backflush Materials check box in the Production Order (tisfc0101s000) session.

You can modify these check boxes for a particular production order. LN backflushes the material only if you select both of these check boxes.

If you clear the Backflush Materials check box, LN clears the Backflush Materials check boxes for all materials.

Backflushing of hours

Use the following settings to set up the items for backflushing of hours:

  • Select the Backflushing check box for the ASSEMBLE task in the Task Relationships (tirou0104m000) session.
  • Select the Backflush Hours check box for the CLOCK item in the Items - Production (tiipd0101m000) session.

When you define an operation for the ASSEMBLE task, the Backflushing check box in the Task Relationships (tirou0104m000) session determines the default setting of the Backflushing check box in the Routing Operations (tirou1102m000) session.

When you create a production order, LN sets the defaults as follows:

  • The Backflushing check box in the Routing Operations (tirou1102m000) session determines the default setting of the Backflush Hours check box in the Production Planning (tisfc0110m000) session.
  • The Backflush Hours check box in the Items - Production (tiipd0101m000) session determines the default setting of the Backflush Hours check box in the Production Order (tisfc0101s000) session.

You can modify these check boxes for a particular production order. LN backflushes the hours only if you select both of these check boxes.

If you clear the Backflush Hours check box, LN clears the Backflush Hours check boxes for all operations.

To make backflushing of hours possible, you must also:

  • Enter a value in the Backflush Employee field in the Work Centers (tirou0101m000) session.
  • Enter a value in the Labor Type field in the Production Order Parameters (tisfc0100s000) session to determine whether work is charged as normal hours or overtime hours.
Serialized items

Serialized items can only be backflushed if in the Items - Warehousing (whwmd4500m000) details session the Serials in Inventory check box is cleared, and the Register Serial Issue During As Built field is Yes. In all other cases, serialized items cannot be backflushed.

If the serialized item is lot-controlled, the lot from which the items are backflushed is based on the outbound method ( Last In First Out (LIFO), First In First Out (FIFO)) as is defined in the Items - Warehousing (whwmd4500m000) details session.

Backflushing in Job Shop

Set the following parameters in the Production Order Parameters (tisfc0100s000) session:

  • Select a backflushing method to determine the level of user interaction in the backflushing procedure.
  • Select the devices for the backflushing materials and hours reports.
Backflushing in Repetitive manufacturing

You can manage materials backflushing in the Repetitive Manufacturing Parameters (tirpt0100m000) session. Depending on the selected backflushing method, backflushing is triggered after quantities end item are reported completed, when a shift is reported completed, or one of the other triggers.

Backflushing updates the work cell cost document.

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