FUJITSU M304X - Manual (Page 72)

(4) DC1 code and DC3 code
When it receives the DC1 code, the printer goes online can receive
data from the host. The DC1 code is the only code receivable when the
printer is in the busy state (Busy signal
In mode, the
printer sets the Select signal to 1 and turns on the START/STOP lamp on
the operator panel.
When it receives the DC3 code, the printer goes offiine (deselect state).
In offline mode, the printer sets the Select signal 0 and turns off the
START/STOP lamp.
(5) DEL code
When it the DEL code, the printer clears the and loads the
next data in the PDB, as the first data of the next line. The DEL code
can be inhibited by setting from the operator panel.
(6) BEL code
When the printer receives the BEL code, the printer buzzer sounds for 1
second. The printer is in the busy state during the buzzer
5.4 Format Control
In addition to using the control codes, the printer can use format control
which specifies a form (page) length and print format for a page.
The feature is implemented by the following:
. Loading data from the host to the FCB
. Loading data from the FCT
. Form length specification on the operator panel
The printer has the FCB and the form length specification feature. An FCT unit
can be incorporated as an option.
When an FCT is not used, format control data is transferred from the host to
the printer online and loaded in its FCB. When the FCT is used, the format
control data is transferred from the FCT unit to the printer offline mode and
is loaded in its FCB.
The format control data indicates channel numbers, which are used by software
to indicate a special line on a page.
The format specification from the operator panel is not selected when the
format has been specified from the host or FCT in the FCB. However,
specification from the operator panel can be used in TEST mode.
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