InHand VT300 Series, Руководство пользователя

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2.4.1 Definition of 26PIN Interface
PIN Name PIN Name PIN Name PIN Name
1 V- 8 1-Wire 14 V+ 21 GND
2 GND 9 RS232_RX 15 IGT 22 RS232_TX
3 DI2 10 GND 16 DI1 23 GND
4 DI4 11 CAN_1L 17 DI3 24 CAN_1H
5 GND 12 CAN_2L 18 GND 25 CAN_2H
6 DO2 13 J1708_B 19 DO1 26 J1708_A
7 AI 20 DO3
2.4.2 RS232 Serial Port
The RS232 serial port is used for debugging. Connect the RS232_RX,
RS232_TX, and GND of the VT310 to TXD, RXD, and GND of the DB-9 serial
port welding-free interface. Use RS232 to USB cable to connect with DB-9
serial port surface welding port.
2.4.3 Digital Input (DI)
The DI can detect the switching value, such as whether the button is pressed
or bounced, and whether the switch is on or off. The VT310 provides
configurable pull-
up. The DI has a default 10kΩ resistor pulled down to GND.