Star Micronics TSP552 user manual RS-232C Connector

APPENDIX

C-2. RS-232C Connector

Pin No.	Signal	Function	I/O	Pin No.	Signal	Function	I/O
	name		direction		name		direction
1	FG	Frame ground		*14	SG2	Ground for +24V	IN
2	TXD	Send data	OUT	15	–
3	RXD	Receive data	IN	16	–
4	RTS	Request to send	OUT	17	–
5	CTS	Clear to send	IN	*18	+24V	Drive power for	IN
6	DSR	Data set ready	IN			mechanical section
7	SG			*19	+24V	Drive power for	IN
8	–					mechanical section
9	–			20	DTR	Data terminal ready	OUT
10	–			21	–
11	–			22	–
12	–			23	–
*13	SG2	Ground for +24V	IN	24	–
				25	INIT		IN

The signals marked with “*” should not be used to supply power if the AC adapter is used. Doing so may result in damage to the power supply.

13 12 11 10 9 8 7 6 5 4 3 2 1

25 24 23 22 21 20 19 18 17 16 15 14

<Viewed from Connector Surface>

Note: Connector on printer side: DALC-J25PAF-23L8 (from Japan Avia- tion Electronics Industry, Ltd.) or equivalent

Connector on cable: DA-25SF-N (from Japan Aviation Electronics Industry, Ltd.) or equivalent

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