Overview of Signals RS-422A | Kyocera DP-3600 guide

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)

+5 V DC (Pin 11)

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