User Manual
Table Of Contents
- RFID OsiSense® XG
- Table of Contents
- Safety Information
- About the Book
- General Information
- Specifications and Physical Description
- Installing the System
- Operating Principles
- EtherNet/IP Communications Support
- Modbus TCP/IP Communications Support
- Web Server
- Diagnostics
- FAQs
- Glossary
- Index
Operating Principles DI[D-SE-0033453.1.1]
44 EIO0000001601 Draft 2013/07/17
Read/Write Operating Mode
Read/Write Operating Mode
Introduction
For read/write operations 2 operating modes are available:
” Static read/write: applications where the tag is stopped in front of the Smart Antenna.
” Dynamic read/write: applications where the tag does not stop in front of the Smart Antenna.
Static Read/Write
The controller must run cyclic scanning of the status of the Smart Antenna before sending read or
write requests addressed to the internal memory of the tag.
A table of words in the system memory area of the Smart Antenna is dedicated to this function:
” Status word: a bit of this word is set to 1 when a tag is detected by the Smart Antenna.
” Tag counter: this word is incremented each time a new tag is detected by the Smart Antenna.
” UID: a group of 8 words where the UID of the last tag detected by the Smart Antenna is stored.
The combination of these information gives the exact status of the system:
” Arrival of a tag in front of the Smart Antenna.
” New tag or same tag as previous one.
” Read/Write operations in the tag possible or not.