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CHAPTER
4
DPC-COMPATIBLE
This
chapter
describes the DPC-compatible interface used for the I/O interface
connected to the M304x series
4 . :
Operation
Basic printer operations, data transfer, printing, and forms feed are shown in
Figure 4.1.
I
The printer starts the print cycle after receiving l-line print data sent from
the mainframe and one of the following:
. Control code (LF, FF, or CR code)
. Skip command (with the Paper Instruction signal = 1)
. Space command (with the Paper Instruction signal = 1)
For the control codes and the Paper Instruction signal, see Sections 4.3.2 and
4.4.2.
After
l-line
the control code or with the Paper Instruction signal.
Data Request signal to one 14 ms before terminating forms feed and starts
receiving the next line of data during forms feed.
INTERFACE
line
Outline
Control code or the Skip 01 Space command
with the Paperlnsrruction
Data edition
Print cycle
Figure
printing, the printer starts the forms feed specified by
printer
(printer).
signal
F
Data rransfer c:ycle
Data Request= 1
I
4.1
Basic
operations
Print data
The printer sets the
Therefore, unless the next
4 - 1
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