Online Documentation: Implementation Guide

How to implement a Dicing Operation

This page will show a simple example of a dicing operation and will show how this operation can be implemented in EZ-MES. In this example a serialized wafer is diced into 4 quarts. Each of the quarts is individually serialized.

Actual problem

The following figure shows a presentation on how a wafer with Unique ID (Serial Number) W01 moves through a dicing operation that dices the wafer in quarts. After the dicing operation the quarts are serialized: W01-1, W01-2, W01-3 and W01-4

Before we start the configuration, there are a number of things to note:

• The wafer is already serialized and could be picked from inventory, or already be on the Traveler where it went through another previous step.
• All quarts will have the same Part Definition.
• Even thought the quarts will have the same Part Definition, they should be individually traceable.
• Traceability of the quarts is achieved by assigning a serial number to the parts.

Configuration / Implementation

The following figure shows a possible implementation for this Wafer dicing operation.

The configuration consist of the following EZ-MES objects:

• A Flow Definition called 'Dice and Serialize' consisting of two Step Definitions.
• A 'Dice Wafer' Step Definition with an Input - Output element.
• A 'Serialize Quarts' Step with a 'Quart ID' Unique Data Entry field

Moving a Traveler

The following figure show what will happen when a Traveler moves through the dicing and serialize step

The following has to be noted:

• The Traveler starts in the 'Dice Wafer' Step. A single Part Record is connected to the Traveler. This Part Record represents a Wafer with Part Definition (PD) WFR-01. The Wafer has an Unique ID / Serial Number: W01
• At the moment the Traveler moves from the 'Dice Wafer' step to the 'Serialize Quarts' step the following happens:
  • The original Part Record of the Wafer is moved to the 'Consumed' State and is disconnected from the Traveler.
  • 4 new Part Records are Created for the Wafer Quarts, these Part Records are connected to the current Traveler.
  • Both Part Definitions of the Wafer and the Wafer Quart should be discrete parts
  • The Unique ID of the Wafer Part Record (W01) is copied to all the new Part Records. This means that if you press F12 and type the 'W01' Unique ID in the search field that it will open 5 part records; one for the consumed Wafer and 4 for the Wafer Quarts

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