Chapter 4 HOST INTERFACE
90
PI Ignored
The PI (Paper Instruction) signal is used to control vertical paper
motion.
• Enable (default). 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.
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 vice
versa.
Resp. Polarity
The Resp. 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.
Busy On Strobe
• Enable (default). Asserts a busy signal after each character is
received.
• Disable. Asserts a busy signal only when the print buffers are
full.
Latch Data On
Specifies whether the data is read on the leading or trailing edge of
the data strobe signal.
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