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')
