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b7
b6
b5
b4
b3
1
R
R
A
B
where:
R
means reserved: these bits are not meant to be handled by
the user. Therefore these should not be used.
A
means printer activity:
A=1 printer is ON LINE and is actually printing
A=0 printer is ON LINE and is waiting for data to be
printed.
B
means battery status:
B=0 batteries are charged
(supply voltage is over the 11.5 Vdc threshold)
B=1 batteries are low
(supply voltage is under the 11.5 Vdc threshold)
PE
means paper sensor status:
PE=0 paper present
PE=1 out of paper
C
means T.O.F. sensor status:
C=1 paper present
C=0 no paper
NOTE:If the printer detects an out-of-paper condition, and the paper end sensor
has not been disabled by the ESC 8 command, the status byte is automatically
sent back to the host (one transmission every 100 ms).
In this condition, although the printer is OFF LINE (see paragraph 1.3.2) the
status byte may have bit A=1 (printer activity) if there are characters left in the
input buffer still to be printed.
4.2.7 BUZZER CONTROL
BEL
Format:
ASCII:
decimal:
hexadecimal:
Comment:
This character makes the control panel buzzer emit a short beep.
ESC # C n
Format:
ASCII:
decimal:
Hexadecimal:
DCA
Intertel
b2
b1
b0
PE
C
R
Sound the buzzer
BEL
7
07
Enable/disable LED flashing
ESC #
27
35
1B
23
C
n
67
n
43
n
23
DCA
Intertel
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