Three Wire connection:
This method is the simplest method of connecting the printer to a host or terminal. This method requires Software Protocol Handshaking (Xon/Xoff flow control).
Host 25S | Printer 9P |
(PC or compatible) |
|
TX 2 | 2 RX |
RX 3 | 3 TX |
GND 7 | 5 GND |
pin 4 |
|
pin 5 |
|
pin 6 |
|
pin 20 |
|
Host 9S | Printer 9P |
(PC or compatible) |
|
TX 3 | 2 RX |
RX 2 | 3 TX |
GND 5 | 5 GND |
pin 4 |
|
pin 6 |
|
pin 7 |
|
pin 8 |
|
Serial port Set-up Parameters
Baud rate: 2400, 4800, 9600, 19200 and 38400.
Baud rate
Data bits: 8 data bits, 1 start bit and 1 stop bit.
Parity bit: None
Handshaking: XON/XOFF (software flow control) and CTS/RTS (hardware flow control).
Before trying to print with applications verify that the Windows Printer Driver and the serial port communications parameters are checked. You should also set the flow control to “Xon/Xoff” or “Hardware”.
User's Guide 53