Kyocera FS-680 - Manual (Page 124)

Appendix C Host Computer Interface
C-7
Serial (RS-232C/RS-422A) Interface (Option)
Mounting the optional serial interface kit (IB-10) to the printer enables connection to a computer with a
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 C.2. The table
also indicates whether each signal is incoming or outgoing with respect to the printer.
Table C. 2. RS-232C Signal Pin Assignments
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.