User`s manual

73
The simplest way to connect to other hosts (not PC compatible) or
terminals is:
Printer Terminal/Host
Pin 2- RxData ……… TxData
Pin 3- TxData ……… RxData
Pin 5- Ground ……… Ground
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.
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).
If you run an application with the bundled printer driver under
Windows and use the serial port, you should check the above
parameters and set the flow control to "Xon/Xoff "or "hardware".
74
Parallel (Centronics)
The parallel port is a standard 36-pin Centronics connector. 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
18
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 active 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.