ida 812-1x MIO Operator’s Guide
FSL Setup via PC’s Parallel Port
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8. FSL Setup via PC's parallel port
In order to ease customization of the ida 812-1x, FSL parameters for
twinax input can be programmed directly via the interface's
Centronics port using the Engineering Function Y249.
The Engineering Function enables the system to detect whether FSL
sequences on shareport are intended for twinax FSL input or for
shareport setup and will direct the sequences received to the twinax
FSL interpreter.
The sequence works as a switch for FSL sequences. The defined
Escape Character will also be translated and defined as Escape
Character for the twinax FSL module. Function Y249 is automatically
deactivated after timeout on the shareport (i.e. settings defined in
Y249 cannot be saved in the NVRAM5).
The setup sequence must only contain ASCII characters.
Apostrophe notation can be used if characters are included in the
US ASCII 7 bit character set. All other data must be in HEX notation.

Activating the Y249 Engineering Function

Before the Engineering Function can be activated, an Escape
character must be defined:
&&??<character>
The sequence "&&??%" will define "%" as the ESC Character.
If you have defined % as Escape Character, you activate the engi-
neering function by typing:
%Y249,n%
n = password. As this is sensitive information, system operators can
contact their i-data distributor for password details.
5NVRAM = Non-volatile RAM (permanent memory)