FUJITSU M304X User Manual
Page 39
Table 4.1 DPC-compatible interface signal lines (Positive logic)
Signal
Signal name
Direction
1 0
System-Printer
kite Machine
5v 0
signal is high (logical
when
following
conditions are satisfied for
printer:
. Power has come on and all voltage levels are
process has been completed.
. The hammer drive system is normal.
. An error is nor
Online
0
This signal enables information to be transmitted
with
system connected
the printer and goes
high when the following conditions are satisfied:
. Write machine
is 1.
.
switch is pressed.
.
print band is
normally.
Data Request
5v 0
A synchronizing signal for data
from
the system, and is high when
from the system
be accepted.
Write Strobe
0
This is a strobe signal for Write Information
the printer. The printer resets its Data Request
signal when the leading edge of this strobe signal
is received.
Write
0
This is
input data from
system.
(For ASCII
Information
7-bit codes,
can be ignored by setting.)
Buffer Clear
0
The data for one line
in the buffer of the
printer is cleared by this signal.
connect 1
signal is used for confirming the connection
Connect 2
of the interface connector.
When the interface
connector is connected, the
1 and Connect 2
lines are connected.
Paper
0
Instruction
signal is high when forms control is performed
by the
this signal is logical 1, the
input data on the WIF lines is stored in the FCB.
This signal is checked 'by the printer at the timing
of the Write Strobe signal in the same
as
WIFE.
For derails, see Section 4.4.2.
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