Serial Interface

Pin Name

1 GND

2TXD

3RXD

4RTS

5CTS

6N/C

7GND

8-10 N/C

11RCH

12N/C

GND

14-19 N/C

20DTR

21-25 N/C

Function

Printer’s chassis ground.

This pin carries data from the printer.

This pin carries data to the printer.

This pin is always set space.

This pin is Space when the computer is ready to send data.

This printer does not check this pin.

Signal ground.

This printer turn this pin Space when it is ready to receive data.

This line carries the same signal aspin 20.

Signal ground.

This printer turns this pin Space when it is ready to receive data.

148

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Star Micronics LC24-20 user manual Serial Interface, 10 N/C