Kyocera DP-3600 User Manual

Page 229

Appendix C Host Computer Interface

C-8

RXD – Receive Data – (Pin 3)

This input carries serial asynchronous data sent by the computer to the printer.

RTS – Request To Send – (Pin 4)

This output is always held high (above 3 volts).

CTS – Clear To Send – (Pin 5)

DSR – Data Set Ready – (Pin 6)

Unused.

SG – Signal Ground – (Pin 7)

All signals can transmit between the printer and the host computer to send each signals with a signal

ground.

+5 V DC – (Pin 11)

This line is connected to the printer’s +5 V DC line (+5 V ±0.5 V, 250 mA [Parallel and Serial total]

maximum, fused).

DTR – Data Terminal Ready – (Pin 20)

This output is used as a buffer nearly-full handshake line. It is held high (above 3 volts) when the

buffer can accept more data.

RS-232C Interface Voltage Levels

The voltage levels of the interface signals conform to EIA RS-232C specifications. SPACE is from 3

volts to 15 volts. MARK is from –3 volts to –15 volts. Voltages between –3 volts and 3 volts are

undefined.