ADLINK C514 User Manual
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26
• Connectors
4.1.8 RS422/485 DB25/DB9 Male Connector Pin assignment - C518/C514
========================================================= 
DB25 Pin Number | DB9 Pin Number | Signal Name 
========================================================= 
 2 | 3 | 422TXD+ (Out) 
--------------------------------------------------------- 
 3 | 2 | 422RXD+ (In ) 
--------------------------------------------------------- 
 4 | 7 | 422RTS+ (Out) 
--------------------------------------------------------- 
 5 | 8 | 422CTS+ (In ) 
--------------------------------------------------------- 
 7 | 5 | GND 
--------------------------------------------------------- 
 13 | 9 | 422RTS- (Out) 
--------------------------------------------------------- 
 14 | 6 | 422TXD- (Out) 
--------------------------------------------------------- 
 16 | 4 | 422RXD- (In ) 
--------------------------------------------------------- 
 19 | 1 | 422CTS- (In ) 
========================================================= 
NOTE: RS422/485 ports have fully isolated ground references with other
RS232 ports.