Brooks Automation
278580 Revision A
127
LF80C ZeniD RFID Reader
7 Operation
Product Manual
7.3 Operation of SECS Protocol
The reader detects an unrecognized device ID and sends the
message S9F1.
Host to Reader: S1F1
16:42:58 Outgoing: ENQ ( 05 )
16:42:58 Incoming: EOT ( 04 )
16:42:58 Outgoing: Length Byte ( 0A )
16:42:58 Outgoing: Header ( 02 FF 81 01 80 01 00 00 00 31 )
16:42:58 Outgoing: Checksum ( 35 02 )
16:42:58 Incoming: ACK ( 06 )
Reader to Host: S9F1
16:42:58 Incoming: ENQ ( 05 )
16:42:58 Outgoing: EOT ( 04 )
16:42:58 Incoming: Length Byte ( 16 )
16:42:58 Incoming: Header ( 81 FF 09 01 80 01 00 07 00 18 )
16:42:58 Incoming: Data
21 0A 02 FF 81 01 80 01 00 00 00 31
→
MHEAD error message
16:42:58 Incoming: Checksum ( 04 8A )
16:42:58 Outgoing: ACK ( 06 )
The device ID in the message block header does not correspond to the
device ID in the reader detecting the error.
The reader detects a wrong stream number and sends the
S9F3 message
Host to Reader: S4F1
20:03:20 Outgoing: ENQ ( 05 )
20:03:20 Incoming: EOT ( 04 )
20:03:20 Outgoing: Length Byte ( 0A )
20:03:20 Outgoing: Header ( 01 FF 84 01 80 01 00 00 00 08 )
20:03:20 Outgoing: Checksum ( 0E 02 )
20:03:20 Incoming: ACK ( 06 )
Reader to Host: S9F3
20:03:20 Incoming: ENQ ( 05 )
20:03:20 Outgoing: EOT ( 04 )
20:03:20 Incoming: Length Byte ( 16 )
20:03:20 Incoming: Header ( 81 FF 09 03 80 01 00 00 00 09 )
20:03:20 Incoming: Data ( 21 0A 01 FF 84 ) =>The wrong message
header
20:03:20 Incoming: Data ( 01 80 01 00 00 00 08 )
20:03:20 Incoming: Checksum ( 04 4F )
20:03:20 Outgoing: ACK ( 06 )
The stream "4" is not part of the BROOKS SECS-II message set, so a S9F3
error message will appear.
