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5.3.1 Character codes
The
AS~CII
code is used as standard the character code.
If the printer receives a character code not specified in the character code
table or not included on the print band, the code is changed to the space code
(X120')
or to a character code specified by setting, and no character is
printed.
If a character code from X'AO' to X'FE' is received
k
7-bit mode,
the Data Bit 8 signal can be ignored (regarded as 0) by setting, and a
character corresponding to each code from
X'20'
to
X'7E'
is printed. For the
setting method,
refer to Operator's Guide.
When receiving character codes, the printer sequentially loads them in its
internal buffer
(IBF).
Characters corresponding to the loaded character codes
are printed after a control code is received.
.The
IBF
is cleared after
printing.
The character code received next is for column 1.
5.3.2 Control code
The line feed
(LF),
vertical tab (VT), form feed
(FF),
carriage return (CR),
FCB command control, escape
(ESC),
DCl,
DC3, start, stop, bell
(BEL),
and
delete (DEL) codes are control codes contained in the area
enc::osed
by
boldfaced lines in Table 6.2. The LF, VT, FF, CR, and FCB command control
codes are called data transferred termination codes
(DTTC).
The printer starts an operation such as printing, forms feed, loading data, or
modifying a set mode when the control code is received.
(1) Data transfer termination code
(DTTC)
Once it starts receiving data, the printer continues to
rmeceive
data
unless it receives a DTTC, such as the CR code and FCB command control
code,
or the number of received character codes reaches
1,32
(136 can be
specified) (buffer-full state). When terminating data
re,ception,
the
printer sets the Busy signal to 1 and prints the received data.
Then, the
printer advances the form as specified. However, if the 'LF, VT, or FF
code is received before the buffer becomes full or before the CR code is
received,
the printer can advance the form as
specifided
>vithout
printing
received data.
This is set from the operator panel. The data remaining
in the PDB is not printed unless the buffer becomes full
,or
the CR code is
received.
a.
LF code
(X'OA')
When it receives the LF code, the printer advances one line.
b.
VT code
(X'OB')
When it receives the VT code,
the printer advances forms to the next
vertical tab channel position,
which is set from the operator panel,
except the TOF and BOF channels.
The VT code can be set as the LF
code from the operator panel.
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