Kyocera FS-6700 Overview of Signals RS-422A, RS-422A interface voltage levels, Serial Connector

Appendix C Host Computer Interface

Overview of Signals (RS-422A)

FG - Frame Ground - (Pin 1)

This pin is connected directly to the printer frame.

RDA - Receive Data Inverted - (Pin 3)

RDB - Receive Data - (Pin 18)

These pins carry asynchronous data sent from the computer to the printer. (differential input)

SG - Signal Ground - (Pin 7)

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

SDA - Send Data Inverted - (Pin 9)

SDB - Send Data - (Pin 10)

These pins carry asynchronous data sent from the printer to the computer. (differential output)

+5V DC (Pin 11)

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

RS-422A interface voltage levels

The interface signal voltage levels conform with the EIA RS-422A standard. The differential voltage varies from 200 mV to 6 V.

SERIAL Connector

The connector marked “IOIOI” (RS-232C/RS-422A) on the rear panel is a DB-25S connector. Use a DB-25P connector (or equivalent) for the connector on the cable.

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