Parallel (Centronics)
The most simple way to connect to other hosts(not PC compatible) or
terminals is:
The parallel port is a standard 36-pin Centronics. Its pin
assignments are listed as following.
Printer
Terminal/Host
Pin 2- RxData ……… TxData
Pin 3- TxData
……… RxData
Pin 5- Ground ……… Ground
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
In general, as long as the data quantity is not too large and you
use Xon/Xoff as flow control, it will be problem free.
Baud rate:
2400, 4800, 9600, 19200 and 38400.
(programmable by command)
Data format :
always 8 data bits, 1 start bit and 1 stop bit.
Parity :
always non parity
Handshaking :
XON/XOFF as well as CTS/RTS (hardware flow
control).
Auto Polling
If you run an application with the bundled printer driver under
Windows and use the serial port, you should check the above
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
PC via different port. However as no port contention is made for this
printer, if both PC transmit data at the same time to this printer, the data
may become damaged in the receiving buffer.
parameters and set the flow control to "Xon/Xoff "or "hardware".
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