Brooks LF80C - Page 142

Brooks Automation
130 278580 Revision A
7 Operation LF80C ZeniD RFID Reader
7.3 Operation of SECS Protocol Product Manual
The secondary message fails and the reader sends the S9F9
message
Reader to Host: S1F1
20:07:16 Incoming: ENQ ( 05 )
20:07:16 Outgoing: EOT ( 04 )
20:07:16 Incoming: Length Byte ( 0A )
20:07:16 Incoming: Header ( 81 FF 81 01 80 01 00 00 00 01 )
20:07:16 Incoming: Checksum ( 02 84 )
20:07:16 Outgoing: ACK ( 06 )
Host to Reader: S9F9
20:08:01 Incoming: ENQ ( 05 )
20:08:01 Outgoing: EOT ( 04 )
20:08:01 Incoming: Length Byte ( 16 )
20:08:01 Incoming: Header ( 81 FF 09 09 80 01 00 00 00 02 )
20:08:01 Incoming: Data ( 21 0A 81 FF 81 ) =>The stored header
20:08:01 Incoming: Data ( 01 80 01 00 00 00 01 )
20:08:01 Incoming: Checksum ( 04 C3 )
20:08:01 Outgoing: ACK ( 06 )
After sending the S1F1 message, the reader waits for an answer from the
host.
If the secondary message does not appear, a transaction timeout occurs
and the reader sends the S9F9 message.