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The RS-232-C interface signals operate according to the printer status.
Table
6.3 lists the printer statuses.
Figures 6.3 to 6.8 show the timing charts for
this interface.
Interface operation varies depending on the message protocols
prepared for the printer.
For message protocol details, see Section 6.4.
Table 6.3 Printer statuses
Item
status
I
Stratus
indicator
@I
RI signal is
1
or START/STOP switch is pressed
( START
@
'
Interface buffer empty
STARI
0;
Interface buffer almost full START
@'
Interface buffer almost empty START
0
An error occurred.
Error content display
0
/
Error reset
SIOP
0
Inrerface buffer almost empty START
@!
START/STOP switch is pressed. STOP
0
I
Power-on diagnosis end START
01
Power-on diagnosis end STOP
0
START/STOP switch is pressed and interface START
buffer is almost empty or is empty
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