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Chapter 4 Host Interface Menu
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.
Data Polarity
The Data Polarity parameter must be set to match the data polarity of your
host computer.
• Standard. 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 Response Polarity parameter must be set to match the response polarity
of your host computer. This option sets the polarity of the Acknowledge,
Online, Fault, Paper Empty, and Busy signals.
• Standard. Does not invert the response signals.
• Inverted. Inverts the response signals sent to the host computer.
Busy on Strobe
• Enable. Asserts a busy signal after each character is received.
• Disable. Asserts a busy signal only when the print buffers are full.
Latch Data On
The Latch Data On parameter specifies whether the data is read on the
leading or trailing edge of the data strobe signal.
Prime Signal
• Disable. The parallel port does not perform a warm start (reboot) if the
host asserts the prime signal.
• Enable. The parallel port performs a warm start (reboot) if the host
asserts the prime signal.