Kyocera FS-1900 manual Serial Interface Option, RS-232C Interface, Interface Signals

Serial Interface (Option)

Serial Interface (Option)

Installing the optional serial interface board kit (IB-10E) in the printer enables connection to a computer with an RS-232C or RS-422A standard serial interface.

RS-232C Interface

Interface Signals

The pins of the printer’s RS-232C interface connector carry the signals listed in table below. The table also indicates whether each signal is incoming or outgoing with respect to the printer.

Pin	In/out	Signal	Description
1	-	FG	Frame ground
2	Out	TXD	Transmit Data
3	In	RXD	Receive Data
4	Out	RTS	Request To Send
5	In	CTS	Clear To Send
6	In	DSR	Data Set Ready
7	-	SG	Signal Ground
20	Out	DTR	Data Terminal Ready

Brief descriptions of the signals follow.

FG - Frame Ground - (Pin 1)

This pin is connected directly to the printer frame.

TXD - Transmit Data - (Pin 2)

This output carries asynchronous data sent by the printer to the computer.

It is used mainly in handshaking protocols.

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.

C-6