Quatech user manual DS-200/300 connector definitions for RS-422/485

PIN	SIGNAL	DESCRIPTION
1	AUXOUT+	Auxiliary channel output (positive)
2	TXD+	Serial data output (positive)
3	GND	Chassis ground
4	RXD+	Serial data input (positive)
5	AUXIN+	Auxiliary channel input (positive)
6	AUXOUT-	Auxiliary channel output (negative)
7	TXD-	Serial data output (negative)
8	RXD-	Serial data input (negative)
9	AUXIN-	Auxiliary channel input (negative)

Figure 26 --- DS-200/300 connector definitions for RS-422/485

1

6

2

7

3

8

4

9

5

D-9 connector (CN1 and CN2)

Figure 27 --- DS-200/300 Output connectors

7-7 Quatech Inc.