User's Manual

Table Of Contents
Product Manual - RFID Reader LF60C SoliD 41
Chapter 7
Operation
7.3 Operation of the ASC-I1 protocol
7.3.1 Structure of the communication protocol
General remarks:
The communication is done with ASCII packages.
Each reader represents a transponder reader with an RS232 interface or
Ethernet interface to which an address from 0 to E can be assigned.
When the reader is delivered, the address is 0.
After each command to the reader, a defined response is sent. We
recommend waiting for this response before sending a new command.
7.3.2 Package contents
General remarks:
Each package includes a package header (three characters), a message (two or
more characters) and the end of the package (five characters).
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.
Package header Message End of package
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´