Part 18
7
Even parity
None parity
8
XON/XOFF handshaking
DSR/DTR handshaking
Software switch 2-1 control the retractable function. When this switch is set to
OFF, printer will enable to retract paper 6.5 mm before it starts to print with
the aim of reducing paper loss. In contrast, it will print straightly when this
switch is placed to ON. Please notice that the factory default of this switch is
OFF.
For software switch 2-2, it is recommended to place at Off. In this way, the
printer performs an automatic paper cut each time when the top cover is closed
(e.g. after paper roll being loaded) with the printer in operating condition.
However, if it is placed in ON, it will not automatically cut paper after top
cover being closed. For switch position 2-3, if the printed paper does not need
to be completely cut, please set this switch to “OFF”, the paper
will auto-cut partially and leave a tiny piece that user needs to rip the printed
paper after cover return; when it is set to “On”, the paper will fully cut after
paper being printed.
For switch position 2-4,
when it is set to “OFF”, the paper will feed before
cutting when software does not define this point and there will be a further
paper feeding after cutting to prevent last 2 lines cut. Before setting this switch
to “ON”, please make sure that your software will take care of enough paper
feed for printed lines cut prevention issue.
For switch position 2-5, if the switch is set to “ON”, the busy signal set to host
only when input buffer is full. When it is set to “OFF”, busy signal is sent to
host whenever the input buffer is full or an off line status occurs. Therefore,
signals including the paper near end detect will generate busy signal to the host.
Moreover, the printer will keep on beeping at Paper End (completely no paper)
till paper is replaced when S2-5 is “ON”. When S2-5 is “OFF”, the printer will
keep on beeping every 3 seconds at Paper Near End (still long paper in
replacement) till paper is replaced.
For switch position 2-6 and when it is set to ON, the printer responds to a
carriage return command (CR code or 0Dh) with also a line feed (LF code or
0Ah) action. Then if the text editor always expresses the change to a new line
with both the CR and LF codes, there will be an extra line advancement than
expected. However it works for some old editors that express the change to a
new line with only either one of the LF code or the CR code.
Switch position 2-7 defines the parity check regulation in serial interface.
In PP-6900, it is selectable between even and none.
For switch position 2- 8 can choose the handshaking method in serial interface.
When it is set to ON, the printer transmits an “XOFF” for busy signal and
sends an “XON” for not busy signal. When it is set to OFF, the printer
signifies the busy status over hardware signals that can be detected by the host
as “DSR” or “CTS”.
