Signal explanations, Input signals to the printer, Parallel interface – Seiko FB-900 User Manual

Page 168

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Parallel interface

[DATA1 to DATA8]

Each of these signals is an 8-bit data signal. It is high

when the signal is logic 1 and low when the signal is

logic 0. DATA1 is the LSB, and DATA8 is the MSB.

[STROBE]

This is a strobe signal for reading an 8-bit data signal.

Data is read in at the falling or rising edge of the

STROBE signal.

[INITIAL]

This signal initializes the printer to the state in which the

printer starts up when the power is turned on. It is

normally high. When it is set to low, the printer is reset.

When it is set to high again, the printer is initialized.

[AUTO FEED]

If this signal is set to low when #27 CR SETTING is set

to AUTOFEED in the

EXTENDED SETUP MODE

, line

feeding is performed when the CR command is executed.

In the HP mode or IBM mode, it is possible to specify

whether to perform line feeding after executing the CR

command by using the software command, regardless of

the settings of this signal and #27 CR SETTING in the

EXTENDED SETUP MODE

.

[SELECT IN]

When this signal is set to high, the control code is

validated. Validity of this signal is specified in the

extended setup mode. In the HP mode, this signal setting

is ignored.

7-3

— 7. Interface specifications —

Signal explanations

Input signals to the printer

See page 3-53.

See page 3-29.

See page 3-53.

See page 3-47.

Each signal wire must be 2 meters or less in
length. It is recommended that a twisted pair
of signal and GND wires be used.

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