Centronics (parallel) submenu, Data bit 8, Pi ignored – Printronix P7000 Cartridge Ribbon Printer User Manual

Page 92: Data polarity, Chapter 4

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92

Chapter

4

HOST INTERFACE Menu

Centronics (Parallel) Submenu

Data Bit 8

Enable

(default). 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

(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.

Centronics

(from page 87)

Prime

Signal

TOF Action

Buffer Size

in K

1

Enable*

Disable

Reset*

Do Nothing

16*

(1-16)

* = Factory Default

1

OpenPrint HD products have an extended range to 256.

Auto

Trickle

Disable*

Enable

Trickle

Time

1/4 sec*

1/2 sec

1 sec

2 sec

4 sec

8 sec

16 sec

Off

Data Bit 8

Enable*

Disable

PI Ignored

Enable*

Disable

Data

Polarity

Standard*

Inverted

Resp.

Polarity

Standard*

Inverted

Busy On

Strobe

Enable*

Disable

Latch

Data On

Leading*

Trailing

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