Connect Tech 104 user manual DB-9 Male Pinouts, RS-422/485 Wiring Diagram

Connect Tech Xtreme/104-Express User Manual

Table 2: DB-9 Male Pinouts

Pin #		RS-232		RS-422/485
DB-9	Signal	Direction	Signal	Direction
1	DCD	Input	RxD+	Xtreme/104-Express
				AdapterInput
2	RxD	Input	RxD-	Input
3	TxD	Output	TxD+	Output
4	DTR	Output	TxD-	Output
5	SG	Signal Ground	SR	Signal Reference
6	DSR	Input	CTS-	Input
7	RTS	Output	RTS+	Output
8	CTS	Input	CTS+	Input
9	RI	Input	RTS-	Output
		1	DB-9 Male
			5
		6	9

Figure 4: RS-422/485 Wiring Diagram

Xtreme/104-Express

Adapter

1	RxD +
3	TxD +
4	TxD -
2	RxD -
7	RTS +
8	CTS +
9	RTS -
6	CTS -
5	SR

RS-485/422

Peripheral

TxD +

RxD +

RxD -

TxD -

RTS +

CTS +

RTS -

CTS -

SR

RS-422/485

4 Wire Diagram

RS-422/485

Peripheral

3	TxD +	RxD +
4	TxD -	RxD -
1	RxD +	TxD +
2	RxD -	TxD -
7	RTS +	RTS +
8	CTS +	CTS +
9	RTS -	RTS -
6	CTS -	CTS -
5	SR	SR

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