Kyocera FS 1900 Operation Guide - Page 206
Serial Interface (Option), RS-232C Interface
UPC - 783310458241
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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