User's Manual

5 OPERATION
112
Transponder Reader LF60 Gen2 (SECS1-Protocol), Release 0.2
The TARGETID in the S18F5 message does not correspond to the
TARGETID in the reader detecting the error. The reader answers with
a communication error “CE”.
The reader detects no tag
Host to Reader: S18F5
Out: ENQ ( 05 )
In : EOT ( 04 )
Out: Length Byte ( 1A )
Out: Header ( 01 FF 92 05 80 01 00 00 00 43 )
Out: Data
01 03
41 04 31 32 33 34 Æ TARGETID “1234”
41 02 30 31 Æ DATASEG “01”
A9 02 00 08 Æ DATALENGTH 0x08
Out: Checksum ( C5 02 )
In : ACK ( 06 )
Reader to Host: S18F6
In : ENQ ( 05 )
Out: EOT ( 04 )
In : Length Byte ( 18 )
In : Header ( 81 FF 12 06 80 01 00 00 00 43 )
In : Data
01 03
41 04 31 32 33 34 Æ TARGETID “1234”
41 02 54 45 Æ SSACK “TE”
41 00 Æ DATA ““
In : Checksum ( 04 8C )
Out: ACK ( 06 )
The reader receives a valid S18F5 message.
If there is no tag in the reading (writing) range of the antenna, the
reader answers with a tag error “TE”.