Xerox FS 5250 IPC 用户手册

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Selected FSL Functions
Xerox FS 5250, User’s Guide
- 72 -
For details on Operating Modes (i.e. function 70 and function 36), DJDE
and Metacode Handling, you are referred to the Programmer's Guide,
doc. no. D62081
11.9. Port Share Option
This section will describe share timeout and how to specify the timeout string
via function Y100.
Function 100: Port Share Option
If you do not use your laser printer full time, you can share it with others.
This is often relevant in office environments where you use different printers
for different print jobs . You can also use this facility for your own use, if you
print from both midrange and PC systems.
The interface has been designed with both a twinax port for the connection
to the twinax system and a parallel port to which you can connect a PC, etc.
If you use both ports on the interface, you will be able to set a  timer to
control how long the interface will wait for data from one port before
accepting data from another port. You will also be able to code a string that
can be used to e.g. reset the printer or select a new font. The timer and
string to be sent when the port takes over will work on the port it was sent to.
If you code the string, it will be sent automati cally when you change from one
port to the other.
In order to specify the  timeout for a specific input port, an FSL ( Function
Selection via the  Line) sequence must be sent to the port in question. To do
this a temporary Escape (ESC) Character must be defined first. This is done
in the following way:
&&??<character>
The sequence "&&??%"  will define " %" as the ESC Character.