Serial Port (Com3, Com4) Rs422 (Option); Serial Port (Com3, Com4) Rs485 (Option) - Kontron Embedded Computers V Box Express User Manual

Serial Port (COM3, COM4) RS422 (Option)

Pin Signal Name
1 TXD- (Transmit Data -)
2 RXD+ (Receive Data +)
3 TXD+ (Transmit Data +)
4 RXD- (Receive Data -)
5 GND (Signal Ground)
6 RTS- (Request to Send -)
7 RTS+ (Request to Send +)
8 CTS+ (Clear to Send +)
9 CTS- (Clear to Send -)

Serial Port (COM3, COM4) RS485 (Option)

Pin Signal Name
1 TXD- (Transmit Data -)
2 RXD- (Receive Data -)
3 NC
4 NC
5 GND (Signal Ground)
6 TXD+ (Transmit Data +)
7 RXD+ (Receive Data +)
8 NC
9 NC
V Box Express – User's Manual
Technical Appendix - Interfaces
9-pin D-SUB Plug (male)
9-pin D-SUB Plug (male)
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