Printronix P7000 H-Series Cartridge Ribbon Printer - Manual (Page 66)

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Chapter 4 HOST INTERFACE
PI Ignored
The PI (Paper Instruction) signal is used to control vertical paper motion.
• Enable (default). Causes the printer to interpret the eight data lines as
DVFU commands when the PI signal is true.
• Disable . Ignores the PI signal and treats the data as characters or control
codes.
Data Polarity
The Data Polarity parameter must be set to match the data polarity of your
host computer.
• Standard (default). Does not expect the host computer to invert the data.
• Inverted . Expects the data received on the data lines from the host
computer to be inverted. Ones become zeros, and zeros become ones.
Resp. Polarity
The Response Polarity parameter must be set to match the response polarity
of your host computer.
• Standard (default). Does not invert the response signal.
• Inverted . Inverts the response signal sent to the host computer.
Latch Data On
Specifies whether the data is read on the leading, middle, or trailing edge of
the data strobe signal. The default is Middle.
Prime Signal
• Disable (default). The parallel port will not perform a warm start (reboot) if
the host asserts the prime signal.
• Enable . The parallel port will perform a warm start (reboot) if the host
asserts the prime signal.
TOF Action
• Reset (default). A form feed is performed before a warm start when the
prime signal is asserted from the host. This setting is used only if the
prime signal parameter is enabled.
• Do Nothing . Nothing occurs before a warm start when the prime signal is
asserted from the host.
Buffer Size in K
Configures the amount of memory allocated for the Dataproducts parallel port
buffer. You can specify between 1, 2, 4, 8, 16, 32, 64, 128, and 256 Kbytes.