
68
Parallel (Centronics)
The parallel port is a standard 36-pin Centronics. Pin
assignments are as follows:
Pin Direction Definition Pin Direction Definition
1
In /STROBE
13
Out SELECT
2
In Data1
14,15
NC
3
In Data 2
16
- Ground
4
In Data3
17
- Ground
5
In Data4
18NC
6
In Data5
19~30
- Ground
7
In Data6
31
NC
8
In Data7
32
Out /Fault
9
In Data8
33~36
- NC
10
Out /ACK
11t
Out BUSY
12
Out PE
Auto Polling
Both the serial port and parallel port of this printer can be
activated at the same time, i.e the printer can simultaneously
communicate with two PCs via different ports. However as no port
contention is made for this printer, if both PCs transmit data at the
same time the data may become damaged in the receiving buffer.
69
ASCII TABLE
NUL 0 @ P ' P
SOH XON ! 1 A Q a q
STX " 2 B R b r
XOFF # 3 C S c s
$ 4 D T d t
NAK % 5 E U e u
ACK & 6 F V f v
BEL ‛ 7 G W g w
BS ( 8 H X h x
) 9 I Y i y
LF * : J Z j z
ESC + ; K [ k {
FF , < L \ l I
CR - = M ] m }
SO RS . > N ^ n ~
SI US / ? O _ o DEL
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