Oki 24DX manual Appendix B RS-232C Serial Interface, 189

Appendix B RS-232C SERIAL INTERFACE

1) Connector

•	Printer side	:	25-pin receptacle
			Type 17LE-13250-27 (D4CC) (made by DDK) or equivalent
•	Cable side	:	25-pin plug
			Type 17JE-23250-02 (D8C) (made by DDK)

Note: Plug shall be able to be fixed with a lock screw.

2)Cable

• Cable length: 6 ft (1.8m) max. (Cable shall be shielded)

Note: Cable is not provided.

3) Interface signal

Pin No.	Signal name	Abbreviation	Signal direction	Functions
1	Frame Ground	FG		Frame ground
2	Transmitted Data	TD	← PR	Transmitted data
3	Received Data	RD	→ PR	Received data
4	Request To Send	RTS	← PR	Stay space level
5	-			(Not connected)
6	-			(Not connected)
7	Signal Ground	SG		Signal ground
8~17	-			(Not connected)
18	+5V		← PR	+5V (50mA maxx.)
19	-			(Not connected)
20	Data Terminal Ready	DTR	← PR	Data terminal ready
21~25	-			(Not connected)

• Connector pin arrangement

13	1
25	14
	(View from the cable side)

When the Reade/Busy protocol is used for the buffer busy control method, the busy signal can be set to Pin-20 (DTR) in the menu.

4) Signal level

•	MARK polarity :	-3V to	-15V (LOGIC = 1)
•	SPACE polarity:	+3V to	+15V (LOGIC = 0)

40930701TH DRAFT Vesion 189 /