Tagsys S.A. L200TUNANT500 User Manual

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CONVEYOR TUNNEL READER User's Guide 
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Revision 1.0 
November 2007 
 
 
4.1.2  Additional Features to Standalone Mode Frame Format  
•  CRC at the end of each ID frame 
•  sorting depth: minimal number of tags to be read before re-read the first one (max 48) 
•  sorting timeout: minimal time before re-read the first one 
•  watchdog characters and delay: check reader is still alive 
All standalone reader parameters are adjusted using L200 Explorer software on the host PC. 
Please refer to 
Chapter 8
 and Medio L200 Reader User’s Guide for further information. These 
parameters can easily be changed during/after installation. 
For automation conveyor standard Standalone PLC program functionalities are as follow:  
•  Automatic start and stop of the RFID reading operation each time tagged items is going 
through the tunnel (PLC manages upstream and downstream photocells information to 
send an output trigger to the Medio L200 Reader) : 
 
 
 
Trigger 
start 
    Trigger 
stop 
 
 
Photocells located at entry/exit of the tunnel are used to start and stop RFID reading 
operations. If the container to read is too thin, it may not be detected by the photocell. If so, 
the photocell must be placed just above the belt level, or the trigger features must be 
cancelled in the standalone mode settings (permanent reading). 
Tunnel 
Box 
Tunnel 
Box