SINGLE DROP - STAR WIRING

 

RS232 Serial Port Cable
FEMALE cable plug mates with PC DB25 Pin Male Connector			MALE cable plug mates with AMI J3 DB9 pin Female Connector
DB25 pin	signal	Direction	J3 pin	signal
2	TX		2	RX
3	RX		3	TX
7	GND		5	GND
4	RTS	jumper1
5	CTS
6	DSR	jumper2
8	DCD
20	DTR

Notes:

1. The ADR BTR only uses 3 RS232 signals - do not connect any signals to the pins not listed for J3.
2. Be sure ADR BTR RS232 jumper is in place and RS422 jumper is removed.
3. Software may require jumpers on the PC end of the cable