
12. Standard Interfaces – Pin Assignments KBox A-101 – User’s Guide (preliminary Version 1.00)
12.1.3. Serial Port (RS422/RS485) configured as RS422 (4-Channel Mode)
Refer to subsection 7.1.4.1 “RS422/RS485 Serial Interface”
Pin Signal Name 9-pin D-SUB Connector (female)
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-)
12.1.4. Serial Port (RS422/RS485) configured as RS485 (4-Wire Mode), Full Duplex, (Bus-Master)
Refer to subsection 7.1.4.1 “RS422/RS485 Serial Interface”
Pin Signal Name 9-pin D-SUB Connector (female)
1 TxD- (Transmit Data-)
2 RxD (Receive Data+)
3 TxD+ (Transmit Data+)
4 RxD- (Receive Data-)
5 GND (Signal Ground)
6 NC
7 NC
8 NC
9 NC
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