Figure UART(TTL/232) Cable and Connectors
3 UART(TTL/232) DP9 connectors pin assignments:
Figure UART(TTL/232) Pin
UART(TTL/232)A
UART(TTL/232)B
UART(TTL/232)C
Pin
Signal
Pin
Signal
Pin
Signal
2
UART(TTL/232)A_RX
2
UART(TTL/232)B_RX
2
UART(TTL/232)C_RX
3
UART(TTL/232)A_TX
3
UART(TTL/232)B_TX
3
UART(TTL/232)C_TX
5
GND
5
GND
5
GND
UART(232/422/485) Ports and Pin Assignments