Dascom 7010 PrintServer Manual - Manual (Page 178)

Additional Features
Print Server User Manual 178
16.1 Logical Printers (Filters)
What Are Logical
Printers?
Logical printers are pre-installed filters that are assigned to a print
object. The filter contains information about the print data.
The print data that is received by the print server will be interpreted
and processed depending on the filter settings. This way, print data
flows can be manipulated, converted, and sent via defined TCP/IP
ports and printer ports.
Logical printers can be used to adapt the print server to various
printing needs and networks. All print server models have eight
logical printers.
Functions of Logical
Printers
The following functions can be used via logical printers:
• The printer port of print server models with several physical
printer ports (COM1, USB1, etc.) is defined via the logical printer.
• The logical printer defines which TCP/IP port is used to send the
print data.
• Depending on the system, line breaks are coded differently. In
order to get the desired result, the print server supports the
conversion of print data from LF (Line Feed) to CR+LF (Carriage
Return with Line Feed).
• The print server supports the hex dump mode. The hex dump
mode is used to search for errors in print data in order to detect
communication problems between the computer and the printer.
The hex dump mode displays each character both as hexadecimal
code and ASCII character code. Printer control commands are
printed as hexadecimal values and do not influence the printout
in any way.
• The print server allows the sending of start and end sequences
before/after a print job. These sequences may consist of
PRESCRIBE or ESC commands that trigger a form feed after the
print job; see: ’How to Modify Print Data’
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