Brooks LF80C - Page 54

Brooks Automation
42 278580 Revision A
7 Operation LF80C ZeniD RFID Reader
7.2 Operation of the ASC-I1 Protocol Product Manual
Package header The header includes the start character (one character) and the package
length (two characters).
The message length describes the number of characters of a message.
Message structure The message includes a command, a target address and a source address
as well as information.
The message length describes the number of characters of a message.
* The reader is preset with 0 when delivered.
Package header
Start Length 1 Length 2
Start Start character (ASCII character ´S´)
Length 1 High byte package length (hexadecimal)
ASCII character ´0´..´F´
Length 2 Low byte package length (hexadecimal)
ASCII character ´0´..´F´
Message
Command Address Information
Command ASCII character (
Î
Message items)
Address Target/source address;
ASCII character '0'...'E' for the reader *
Information Depends on the command (includes
none, one or more ASCII characters '0'...'F')