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Connection with host: |
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Host 25S | Printer 9P | Host 9S | Printer 9P |
(PC or compatible) | (PC or compatible) | ||
DTR 20 | …… 1 DSR | DTR 4 | …… 1 DSR |
DSR 6 | …… 6 DTR | DSR 6 | …… 6 DTR |
TX 2 | …… 2 RX | TX 3 | …… 2 RX |
RX 3 | …… 3 TX | RX 2 | …… 3 TX |
CTS 5 | …… 7 RTS | CTS 8 | …… 7 RTS |
RTS 4 | …… 8 CTR | RTS 7 | …… 8 CTS |
GND 7 | …… 5 GND | GND 5 | …… 5 GND |
Alternatively you can just connect the 3 wires in the following way.
Host 25S | Printer 9P | Host 9S | Printer 9P |
(PC or compatible) | (PC or compatible) | ||
TX 2 | …… 2 RX | TX 3 | …… 2 RX |
RX 3 | …… 3 TX | RX 2 | …… 3 TX |
GND 7 | …… 5 GND | GND 5 | …… 5 GND |
pin 4 |
| pin 4 |
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pin 5 |
| pin 6 |
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pin 6 |
| pin 7 |
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pin 20 |
| pin 8 |
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MO9740 Manual
The most simple 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. (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).
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".
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