MaterialPackageDetail Class

There is material in the factory where not each material unit is identifiable. This is the case for Trays for example. Trays are delivered as a batch of trays. But each tray does not have a unique ID, only the batch of trays has a unique ID. In this case, we assume that the unique Batch ID is in the property BatchID and each tray which is been mounted will get a temporary UniqueIdentifier as long as it is been mounted on the machine. See BatchMaterialPackage for more details.

This specifies the grey zone between 2 material packages. A grey zone is a zone where the placement system can not determine where the switch between 2 material packages has been taken place. Therefore the system tracks both material packages. The quality of the GreyZone is driven by the process the customer is operating and if the feeder are using optional splice sensor detectors or not. Background is, that some sensors can detect the splice plate and the splice plate has a length which covers a number of components which hide the real end of tape. Therefore the verifcation system will report a greyzone between the "leading package" and the "trailing" in the chain. The greyzone will be maintained typically by the machine, based on the feeder configuration. When the feeder has a sploice sensor the grey zone will be calculated when the sensor detects the splice, and will be adjusted when components are consumed. When the greyzone reached zero, the "leading" package will be consumed and the chain will be modified by removing the "leading" package from the chain, resulting in the next package in the chain becoming the new "leading" package.