Cino FA470 - Manual (Page 12)

Command Overview
1-5
All FuzzyScan Serial Commands begin and end with the fixed prefix and suffix - 7Eh, which
serve as parentheses. Between the prefix and the suffix is the command body. The main body
consists of Opcode, Status, Length, Parameter(s) and check digit.
According to the functional group, there are two different parameter formats. The “Action” and
“Acknowledgement” command groups use the “Simple” parameter format. The other
command groups allow the “Compound” parameters to make more effective control. Please
refer to the following paragraphs for details.
Escape Sequence
Several characters have special functions in FuzzyScan Serial Command and communication
manipulation, such as “Prefix (7Eh)”, “Suffix (7Eh)”, “ACK (06h)”, “NAK (15h)”, “XON (11h)”,
“XOFF (13h)” and “Backslash (5Ch). If you have to use above characters in your command
string (from “Length”, “Parameter” to “LRC”), please replace them with their escaped value
listed in following table.
ASCII ~ \ ACK NAK XON XOFF
Hex 7Eh 5Ch 06h 15h 11h 13h
Escaped Value 5Ch 00h 5Ch 01h 5Ch 02h 5Ch 03h 5Ch 04h 5Ch 05h
For example,
If a host-to-device serial command is listed as below:
" 7Eh 85h 00h 00h 00h 00h
06h 02h 00h 00h 02h 01h 01h 83h 7Eh "
“ Prefix Opcode Status Length Parameter(s) LRC Suffix “
The “06h” have to be replaced "5Ch 02h". So the correct command string will be,
" 7Eh 85h 00h 00h 00h 00h 5Ch 02h 02h 00h 00h 02h 01h 01h 83h 7Eh ".
In other words, if the device send following string to host.
" 7Eh 07h 00h 00h 00h 00h 5Ch 02h 02h 00h 00h 02h 01h 01h 01h 7Eh "
Your serial host application have to change “5Ch 02h” to “06h” as well.