RF Neulink NL900 - Manual (Page 6)

11/16/2004 6
NL900 User’s Manual
Pin Description
1 DCD
2 RxD
3 TxD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
Pin Description
NC DCD
2 TxD
3 RxD
4 DSR
5 GND
6 DTR
7 CTS
8 RTS
NC RI
1.3 RS232 Cable Pinout Definitions
Standard RS232 DB9 Female Connector Null Modem RS232 DB9 Male Connector
(Black DB9 Female/Female Cable) (Gray DB9 Female/Male Cable)
1.3.1 RS485 Terminal Block Pin Assignments
Half Duplex:
Pin Assignment
1 VCC (6V – 18V) (1.3A Required)
2 485- (485B)
3 No Connect
4 No Connect
5 485+ (485A)
6 Ground