Lindy RS-422/485 user manual TxD TxD+ RxD+

LINDY Serial Communication Boards have one DB37 female port for the 4 port version and one DB78 female port for the 8 port version. The pin assignments of the DB37 female port and the DB78 female port are shown below and on the following page.

LINDY DB37 female 4 Port Serial Communication Boards Pin Assignment

Port	2	3	4
1
Signal

	TxD-	34		11		25		2
	TxD+	37		14		28		5
	RxD+	19		33		10		24
RS-422	RxD-	16		30		7		21
	RTS-	17		31		8		22
	RTS+	18		32		9		23
	CTS+	36		13		27		4
	CTS-	15		29		6		20
	GND	35		12		26		3
	Port		1		2		3		4
	Signal
	Data+	37		14		28		5
	Data-	34		11		25		2
RS-485	RTS-	17		31		8		22
	RTS+	18		32		9		23
	CTS+	36		13		27		4
	CTS-	15		29		6		20
	GND	35		12		26		3

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