FS-6700
Acknowledge* [nAck]
10
This negative-going pulse acknowledges the previous
character received by the printer. Acknowledge* pulses
are sent only when Busy is low.
Busy [Busy]
11
This signal is high when the printer is busy and low when
it is able to accept more data. Every high-to-low transition
is followed by an Acknowledge* pulse.
Paper Empty [PError] 12
This signal goes high when the printer runs out of paper.
On-Line [Select]
13
This signal is high when the printer is on-line and low
when the printer is off-line. It goes low when the upper
unit is raised, or when the ON LINE key is pressed to set
the printer off-line.Note - The Paper Empty and On-Line
signals are not used unless enabled by the FRPO com-
mand (O2 parameter).
Auto-Feed [nAutoFd]
14
This signal is used in the Epson version of the Centronics
interface to receive a carriage return. In high-speed mode,
it is used as an interrupt.
+5V DC
18
This line is connected to the printer’s +5V DC line
(+5V*0.5V, 250 mA maximum, fused).
Prime [nInit]
31
This signal is used in the standard Centronics interface to
enable the computer to reset the printer. It is ignored by
the printer.
Error* [nFault]
32
When the high-speed parallel line control is on (FRPO
O2=2), this line returns error status.
Auxiliary output 1
33
This signal line is not used.
Power Ready
35
This signal is high when the printer’s power is on.
Select In [NSelectIn]
36
This signal is used in some versions of the Centronics
interface to enable the computer to force the printer on-
line. In high-speed mode, it is used as an interrupt.
Table A. 2 Parallel interface signals—2/2
Signal
Pin
Meaning
Содержание Ecosys FS-6700
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