Operator Manual
3–32
Parallel I/O Category
The Parallel Category on your printer has three parameters that can be
changed according to user needs.
POPC (Print On Paper Command)
The POPC Parameter can be set up so that each time a paper advance com-
mand is received (such as a Line Feed, Form Feed, or Vertical Tab), any data
currently held in the buffer will be printed before the command is carried out.
The default selection is On.
8th Bit
The 8th Bit can serve several functions, depending on the software manufac-
turer. Check your software manual for information concerning the functions of
this bit. Data is the default selection.
Bi-Directional
This parameter controls the bidirectional operation of the Parallel interface. The
default selection is ON (enabled).
When ON, the Parallel interface operates in IEEE-1284 Bidirectional Nibble
Mode. This mode enables features dependent on bidirectional "reverse chan-
nel" communication via the parallel port, such as HP PJL Status and Windows
Plug-n-Play. Note that the host computer or print server attached to the parallel
port must be configured to use IEEE-1284 Nibble Mode, otherwise it may not
function correctly with your printer. ECP Mode is not compatible with Nibble
Mode.
When OFF, the Parallel interface operates in the Centronics Compatibility Mode
("standard" mode). This mode does not support bidirectional communication. If
there are parallel interface compatibility problems between the host computer
and the printer, setting Bi-Directional = OFF may resolve the problem.
Summary of Contents for T6212
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