User's Manual

Product Manual - RFID Reader LF60C SoliD 42
Chapter 7
Operation
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.
End of package The end of the package includes an end character (one character) and in case of a
serial interface also a checksum (four characters).
Message
Command Address Information
Command ASCII character ( Commands reader to host)
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')
End of package
End Checksum 1 Checksum 2 Checksum 3 Checksum 4
End End character ASCII character no. 13
(hexadecimal 0D)
Checksum 1 High byte - XOR logic of all data (package header, message and
end character);
ASCII '0'..'F'
Checksum 2 Low byte - XOR logic of all data (package header, message and
end character);
ASCII '0'..'F'
Checksum 3 High byte - addition of all data (package header, message and
end character);
ASCII '0'..'F'
Checksum 4 Low byte - addition of all data (package header, message and
end character);
ASCII '0'..'F'
ATTENTION
When using the TCP/IP interface option, the checksum is not used (is not
transmitted).