Network Technologies SM-8X4-HDA RS232 Connection Cables, Pinout of RS232 port on VEEMUX-A

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RS232 CONNECTION CABLES

Pinout of RS232 port on VEEMUX-A

The VEEMUX-A RS232 serial port is a DB-9F (female) connector configured as a DCE (data communication equipment) port. The RS232 port interface signals are listed below, including equivalent CCITT V.24 identification, and signal direction:

DB-9F	Common	EIA	CCITT	Function	Direction
pin #	name	name	name
1	N/a	N/a	N/a	No connection	--
2	TxD	BA	103	Transmit Data	Output
3	RxD	BB	104	Receive Data	Input
4	DSR	CC	107	Data Set Ready	Input
5	SG	AB	102	Signal Ground	–
6	DTR	CD	108.2	Data Terminal Ready	Output
7	CTS	CB	106	Clear To Send	Input
8	RTS	CA	105	Request To Send	Output
9	N/a	N/a	N/a	No connection	--

Pinouts for typical DCE to DTE cable for CPU connection

VEEMUX (DCE) to 9 PIN DTE (PS2 or SUN)

VEEMUX			PS/2 or SUN CPU
9 pin		Signal		9 pin
Function	Pin #	Direction	Pin #	Function
RxD	3		3	TxD
TxD	2		2	RxD
CTS	7		7	RTS
RTS	8		8	CTS
DSR	4		4	DTR
DTR	6		6	DSR
SG	5		5	SG

VEEMUX (DCE) to 25 PIN DTE (MAC)

VEEMUX			MAC CPU
9 pin		Signal		25 pin
Function	Pin #	Direction	Pin #	Function
RxD	3		2	TxD
TxD	2		3	RxD
CTS	7		4	RTS
RTS	8		5	CTS
DSR	4		20	DTR
DTR	6		6	DSR
SG	5		7	SG

	9 PIN	9 PIN			9 PIN
VEEMUX	DTE	DTE	PS/2 or SUN CPU	VEEMUX	DTE	25 PIN DTE	MAC CPU

1	2	3	4	5	1	2	3	4	5		6	7	8	9	10	11	12	13
6	7		8	9	14	15	16		17	18	19	20	21	22	23	24	25

Mating Face	Mating Face of DB25 Male
of a 9D Male

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