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Chapter 4 Host Interface Menu
Centronics (Parallel) Submenu
The Centronics submenu provides the options and settings available to
configure the interface as required for your application. These options and
available settings are outlined in the following paragraphs.
Data Bit 8
• Enable. Allows access to the extended ASCII character set.
• Disable. The printer interprets bit 8 of each incoming data character as a
zero, regardless of its actual setting.
PI Ignored
The PI (Paper Instruction) signal is used to control vertical paper motion.
• Enable. Ignores the PI signal and treats the data as characters or control
codes.
• Disable. Causes the printer to interpret the eight data lines as VFU
commands when the PI signal is true.
Note The Centronics parameters in the printer must be set the same as the
interface in the host computer (at the other end of the data cable of the
printer). Otherwise, the printer might not work online, and data characters
from the computer might not print or might print as “garbled” text.
Centronics
(from page 110)
Data Bit 8
PI Ignored Data
Polarity
Resp.
Polarity
Busy on
Strobe
Latch
Data On
Prime
Signal
TOF
Action
Buffer Size
in K
Enable*
Disable
Enable*
Disable
Standard*
Inverted
Standard*
Inverted
Enable*
Disable
Leading*
Trailing
Disable*
Enable
Reset*
Do Nothing
1*
(1-16)
* = Factory Default
