Perle Systems Adaptors DB9 back panel connectors and pinout, DB9M pin EIA-232 EIA-422 EIA-485

DB9 back panel connectors and pinout

The following diagram shows the UltraPort2/UltraPort2 SI, UltraPort 1/UltraPort1 SI, the UltraPort1 SI Low Profile and UltraPort1 Expressback panels respectively.

DB9M pin	EIA-232	EIA-422	EIA-485
1	DCD	CTS-	NC
2	RXD	RXD+	RXD+
3	TXD	TXD-	TXD-/RXD-
4	DTR	TXD+	TXD+/RXD+
5	S-GND	S-GND	S-GND
6	DSR	RXD-	RXD-
7	RTS	RTS-	NC
8	CTS	CTS+	NC
9	RI	RTS+	NC
Shell	C-GND	C-GND	C-GND

UltraPort Serial Adaptors User Guide	Chapter 3 Cabling information
Host card back panel connectors and pinouts	Page 105