EIA530 (RS530)

Pinout

25 PIN D-SUB MALE at the DTE (Computer).

25 PIN D-SUB FEMALE at the DCE (Modem).

CORRECT?

Pin	Name	Description	Circuit	Paired with
1		Shield		18
2	TxD	Transmitted Data	BA	14
3	RxD	Received Data	BB	16
4	RTS	Request To Send	CA	19
5	CTS	Clear To Send	CB	13
6	DSR	Data Set Ready	CC	22
7	SGND	Signal Ground	Ground	21
8	DCD	Data Carrier Detect	CF	10
9		Rtrn Receive Sig. Elmnt Timing	DD	17
10		Rtrn DCD	CF	8
11		Rtrn Transmit Sig. Elmnt Timing	DA	24
12		Rtrn Transmit Sig. Elmnt Timing	DB	15
13		Rtrn CTS	CB	5
14		Rtrn TxD	BA	2
15		Transmit Signal Element Timing	DB	12
16		Rtrn RxD	BB	3
17		Receive Signal Element Timing	DD	9
18	LL	Local Loopback	LL	1
19		Rtrn RTS	CA	4
20	DTR	Data Terminal Ready	CD	23
21	RL	Remote Loopback	RL	7
22		Rtrn DSR	CC	6
23		Rtrn DTR	CD	20
24		Transmit Signal Element timing	DA	11
25		Test Mode	TM

Note: Direction is DTE (Computer) relative DCE (Modem).