MODEL
442A
TSURUGA ELECTRIC CORPORATION
10
5.3 Error
5.3.1 Paper end detection
Paper end detection sensor incorporated to detect paper end.
In the case of paper end, PE output (“H”) is provided and no print available.
POWER LED is blinking.
5.3.2 Temperature error detection
When the temperature of printer head becomes approx. 80
℃
or higher, ERR output (“L”)
is provided and no printing available.
Once ERR output is provided, ERR output dose not turn OFF till the temperature fall to
approx.60
℃
or lower. POWER LED is blinking.
5.4 Interface
5.4.1 Parallel (Conform to centronics)
●
Timing chart
Receive Buffer Full
8 bits data
A B C
STROBE
D E D F
BUSY
ACK
G G
●
Connection
442A(20p)
25p D sub connector
1 STB
2 DATA
1
3 DATA
2
4 DATA
3
5 DATA
4
6 DATA
5
7 DATA
6
8 DATA
7
9 DATA
8
10
ACK
11
BUSY
12
PE
13
14
15
ERROR
16
INITIAL
17
18
GND
19
20
21
22
23
24
25
1
STROBE
￣￣￣￣￣￣￣￣
2
DATA 0
3
DATA 1
4
DATA 2
5
DATA 3
6
DATA 4
7
DATA 5
8
DATA 6
9
DATA 7
10
ACK
￣￣￣￣
11
BUSY
12
PE
13
ERR
￣￣￣￣
14
INIT
￣￣￣￣
15
COM
16 SG
17 SD
18 RD
19 NC
20 NC
A: Min. 0.5
μ
s
B: Min. 0.5
μ
s
C: Min. 0.5
μ
s
D: Max. 0.5
μ
s
E: Max. 25
μ
s
F: Max. 4.6 s (Note)
G: Min. 0.5
μ
s
Note) Time to release
Receive Buffer Full
(except PE, ERR, and
chart paper cover
open) at starting new
line of Max.28 byte
data.
