Epson LQ 870 User Manual - Page 79

Data Dump Mode, LOAD/EJECT, LF/FF, PAUSE

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Data Dump Mode Data dump mode is a special feature that allows experienced users to find the cause of communication problems between the printer and application programs. In data dump mode, the printer produces an exact printout of the codes it receives. To use data dump mode, follow these steps: 1. Make sure the printer is off. 2. Hold down the LOAD/EJECT and LF/FF buttons while you turn on the printer. The printer beeps three times. 3. Load the paper. 4. Next, run either an application program or a program you have written in any programming language. Your printer prints all the codes it receives in hexadecimal format, as shown below. Data Dump Mode 1B 4 0 1B 5 2 0 0 18 7 4 01 lB 3 6 12 16 5 0 2 0 2 0 2 0 54 68 69 73 20 69 73 20 61 6E 20 65 78 61 6D 70 6C 6 5 2 0 6F 6 6 2 0 61 2 0 6 4 6 1 7 4 61 2 0 6 4 7 5 6D 7 0 2 0 7 0 7 2 6 9 6E 7 4 6F 7 5 7 4 2E 2 0 54 6 8 6 9 7 3 2 0 6 9 7 3 2 0 6 6 6 5 61 74 7 5 7 2 6 5 2 0 6D 61 68 6 5 7 3 2 0 6 5 61 7 3 7 9 2 0 6 6 6F 7 2 OD OA [email protected] This is an examp le of a data dum p printout. This i s feature m a k e s easy for.. 5. To turn off data dump mode, press the PAUSE button to stop printing and eject the paper; then turn off the printer. By reading the characters printed in the text field on the right side of the data dump printout (shown in step 4) or the printout of hex codes, you can check which codes are being sent to the printer. In the text field, characters appear as their true ASCII characters, if they are printable. Nonprintable codes, such as control codes, are represented by dots. Using the Printer 3-23

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Data Dump Mode
Data dump mode is a special feature that allows experienced users
to find the cause of communication problems between the printer
and application programs.
In data dump mode, the printer produces an exact printout of the
codes it receives. To use data dump mode, follow these steps:
1. Make sure the printer is off.
2.
Hold down the
LOAD/EJECT
and
LF/FF
buttons while you turn
on the printer. The printer beeps three times.
3.
Load the paper.
4.
Next, run either an application program or a program you have
written in any programming language. Your printer prints all
the codes it receives in hexadecimal format, as shown below.
Data
Dump Mode
1B
40
1B
52
00
18
74
01
lB
36
12
16
50
20
20
20
54
68 69
73
20 69
73
20
61
6E
20 65
78 61
6D
70
This is
an
examp
6C
65
20
6F
66
20
61
20
64
61
74
61
20
64
75
6D
le
of
data
dum
a
70
20
70
72
69
6E
74
6F
75
74
2E
20
54
68
69
73
p
printout. This
20
69
73
20
66
65
61
74
75
72
65
20
6D
61
68
65
is
feature
make
73
20
65
61
73
79
20
66
6F
72
OD
OA
s
easy for..
5.
To turn off data dump mode, press the
PAUSE
button to stop
printing and eject the paper; then turn off the printer.
By reading the characters printed in the text field on the right side
of the data dump printout (shown in step 4) or the printout of hex
codes, you can check which codes are being sent to the printer.
In the text field, characters appear as their true ASCII characters, if
they are printable. Nonprintable codes, such as control codes, are
represented by dots.
Using the Printer
3-23