FUJITSU M304X User Manual

Page 37

CHAPTER 4 DPC-COMPATIBLE INTERFACE

This chapter describes the DPC-compatible interface used for the I/O interface
connected to the

series line printer (printer).

4 . :

Operation Outline

Basic printer operations, data transfer, printing, and forms feed are shown in
Figure 4.1.

Control code or the Skip

Space command

with the

signal

transfer cycle

data

Data edition

Data

Print data

Data Request=

Figure 4.1 Basic operations

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

. Space command

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 printing, the printer starts the forms feed specified by

the control code or with the Paper Instruction signal.

The printer sets the

Data Request signal to one 14 ms before terminating forms feed and starts
receiving the next line of data during forms feed.

Therefore, unless the next

4 - 1