Linx 4900 Operating Manual page 139

Chapter 6: Remote Interface Setup
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Linx 4900 Operating Manual
Buffer Threshold
Both the printer and the remote computer use areas of memory called
'buffers' to receive incoming characters. This option defines the
number of characters to be received in the printer receive buffer before
the printer disables data flow using either hardware or software flow
control. This is used to ensure that no characters are lost, as there is a
finite time between the receiver telling the transmitter to stop sending
data, and the transmitter actually stopping. The Buffer Threshold
allows the receiver to receive those additional characters without
running out of buffer space.
This option can be set to any value between 1 and 244.
4800 Translation
This option allows you to enable translation of 4900 data so that the
4900 printer can be used within applications that communicate with
other types of Linx printers, typically alongside 4800 and 6200
printer(s).
When set to No (default), the 4900 printer uses its own naming
conventions for printer data and parameter values during data transfer.
The printer is therefore not compatible with applications that
communicate with other types of Linx printers.
When set to Yes, the 4900 printer is compatible with applications that
communicate with other types of Linx printers (4800 or 6200). The
names of various data and parameter values that are used during data
transfer are translated from the 4900 convention to the 4800
convention.
For example, when the 4900 message type name '5 FH (Caps)' is
used, it is translated to the 4800 message type name '5 High Caps'. In
addition, parameter values that are recognised as bit sets are also
translated internally.
NOTE: There is a limitation on translating data when messages are
transferred from a 4900 printer to other types of Linx
printers. This is that messages created on a 4900 printer then
transferred via a PC to another Linx printer (4800 or 6200)
will not be translated.
Messages created on other Linx printers (4800 or 6200) and
then transferred via a PC to a 4900 printer will be
successfully translated.
Details of the 4900 to 4800 translations are provided in the Linx
Remote Communications Interface Reference Manual (FA76014).
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