In SAP Extended Warehouse Management (EWM), RFID (Radio Frequency Identification) is a technology used for contact-free identification, control, and tracking of packaged products and handling units.
SAP EWM integrates with RFID technology by utilizing RFID labels that contain embedded RFID tags. These tags electronically store information that can be read wirelessly by RFID readers. This allows for automated processes like receiving, put-away, and shipping without needing a direct line of sight, unlike traditional barcode scanning.
RFID vs. Barcodes in SAP EWM
While barcodes are a common method for identification, RFID offers distinct advantages within the warehouse environment:
- Contact-Free Reading: RFID tags can be read without direct physical contact or line-of-sight, enabling faster and more efficient scanning, even when tags are obscured.
- Multiple Reads: Unlike barcodes, which typically require individual scans, multiple RFID tags within a certain range can be read simultaneously.
- Reusability: RFID tags can often be used multiple times, reducing waste and potential costs compared to single-use barcode labels.
- Bulk Generation: Multiple RFID tags can be generated at once, streamlining the labeling process for large volumes of goods.
- Data Capacity: RFID tags can store more data than typical barcodes.
Summary of Differences:
| Feature | RFID | Barcode |
|---|---|---|
| Reading Method | Contact-free, no line-of-sight | Requires direct line-of-sight/contact |
| Simultaneous Read | Multiple tags can be read at once | Typically one tag at a time |
| Reusability | Often reusable | Single-use |
| Generation | Multiple tags can be generated at once | Typically generated individually |
| Data Storage | Can store more data | Limited data capacity |
How RFID Works in SAP EWM
- Tagging: Products or handling units are affixed with RFID labels containing programmed RFID tags.
- Reading: RFID readers (fixed or mobile) placed at various points in the warehouse (e.g., dock doors, conveyors, storage aisles) automatically scan the tags as they pass.
- Integration: The data captured by the readers is transmitted to SAP EWM.
- Processing: SAP EWM uses the RFID data to automatically confirm steps like goods receipt, track movements within the warehouse, and update inventory records without manual scanning.
By leveraging RFID, SAP EWM can improve the speed, accuracy, and visibility of warehouse operations, reducing manual effort and potential errors associated with traditional identification methods.
