User's Manual

Product Manual - RFID Reader UF80 32
Chapter 7
Operation
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 contains a command, a target or source address, the number of the
antenna port (Head - here always 1) and the actual information.
*
The reader is preset with 0 when delivered.
End of package The end of the package includes an end character (1 character).
Package header
Start Length 1 Length 2
Start Start character (ASCII character 'S')
Length 1 High byte message length (hexadecimal) -
ASCII characters ´0´..´F´
Length 2 Low byte message length (hexadecimal) -
ASCII characters ´0´..´F´
Message
Command Address Head Information
Command ASCII characters (see section  Commands of protocol)
Address
Target/source address; ASCII characters '0'...'E'
*
Head Optional - for messages that refer to a specific antenna
port
Information Depending on the command (contains none, one or more
ASCII characters '0'...'F')
End of package
End
End End character ASCII character number 13 (hexadecimal 0D)
ATTENTION
The end of the message does not contain a checksum, because communication
is exclusively carried out via TCP/IP.
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