Brooks Automation
278580 Revision A
71
LF80C ZeniD RFID Reader
7 Operation
Product Manual
7.3 Operation of SECS Protocol
HSMS message
format
This section defines the detailed format of the messages used by the
procedures in the previous section. An HSMS message is transmitted as a
single continuous stream of bytes in the following order:
The minimum possible message length is 10 (header only).
The maximum possible message length depends on SECS-I.
Number of
bytes
Description
4 bytes
Message length. MSB first. Specifies the number of
bytes in the message header plus the message text.
10 bytes
Message header
0 - n bytes
Message text. Format is further specified by P-type field
of message header. The message text corresponds to
message data by SECS-II encoding.
