24 25
4.
Pull the paper out through paper out slot on upper cover plate and then close
the plate like figure 2-7 below.
Figure 2-7 put upper cover plate back to the printer
2-3
Power On and OFF
This printer provides auto power cut off function to save energy.
2.3.1 Connecting of Power
After connecting the power supply, there are two methods of power connecting
namely: 1. by push button; 2. by interface.
1. By Push Button.
There are two push buttons on the control panel namely SEL & LF. Press SEL
button, power indicator will be in red to indicate the printer is on power..
2. By Interface
- Using Parallel Interface. The interface signal INIT is negative pulse signal and
will remain for at least 3ms to ensure power on. Power Indicator turns in red
to signal the printer is on power. Wait another 600ms to initialize printer before
sending data.
- Using Serial Interface. The interface signal DTR is EIA standard. It is logical
level from “1” to “0 ” and remain at least 3ms to ensure power connection. Power
indicator turns in red to signal the printer is on power. Wait another 600ms to
initialize printer before sending data.
3.
Example of Using Parallel Interface (for PC)
Basic Formal
Explanation
100 DEF SEG=&H40
: Bottom of BIOS
database.
200 prtr=PEEK (9) *256+PEEK (8) +2
: Get base address of
LPT1.
300
OUT
prtr,
8
:
Initialize
printer
by
negative signal through
INIT.
400 IF (INP (prtr-1) AND &H98)
<>&H98THEN 400
: Loop if check the printer
is BUSY.
500 . :
Normal
printing
procedure.
.
.
.
.
prtr-1 status register of parallel interface
BIT3: 0, printer error; 1, printer normal
BIT4: 0, printer off line; 1, printer on line
BIT7: 0, printer busy; 1, printer not busy
prtr
control register of parallel interface
BIT2: 0, initialize printer;
1, normal setting
BIT3: 0, make printer off line; 1, normal setting
4.
Example of Using Serial Interface (for PC)
Basic Program
Explanation
100 baseaddress = &H2f8
: Set base address of serial port.
: &H3F8 for COM1 and &H2F8
for COM2.
200 OUT basea4, &H1 : DTR (data terminal ready) set
high.
300 IF (INP (base6) AND
&HB0) <> &HB0 THEN 300.
: Loop if check printer is not
READY.
400 . :
Execute
normal
printing
procedure
.
.
.
.
base4: Control register of modem of the PC serial port
COM1 or COM2.
BIT0:
DTR (data terminal ready) set 1 for valid.
basea6 Status register of modem of the PC serial port
