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10.1 Remote Control Port
The T30 computer is equipped with 6 COM ports. Among
these COM ports, COM5 and COM6 are only for internal use.
COM5 is the special port for the debugging software, and
COM6 is the serial port for the remote controller data
transmission. Other COM ports are converted into different
signals by hardware and lead out data through the 4-wire
interface at the back of the remote control.
The 4-wire interface as below photo:
The corresponding relationship between interface and port is
as follows:
Interface
Port
Line sequence(as top-down ordering)
TTL
COM1
pin1-3.3V
，
pin 2-GND
，
pin 3-TXD
，
pin 4-RXD
RS232
COM2
pin1-3.3V
，
pin 2-GND
，
pin 3-TXD
，
pin 4-RXD
RS485
COM3
pin1-3.3V
，
pin 2-GND
，
pin 3-A
，
pin
4-B
RS422
COM3
pin1-3.3V
，
pin 2-GND
，
pin 3-Z
，
pin
4-Y
