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Technologies
STAD150WT-15 Equipment Manual
Release 01/2019
6
2
Interface Description
2.1 Serial Ports
STAD150WT-15 is integrated with 4 serial ports. UART0, UART1, UART2,
UART3 are RS-232 level converted. All have been treated with anti-static
treatment.
UART2, UART3 are an RS-232 and RS-485 hardware multiplex interface,
can be connected to an external RS-485 level device.
The serial ports are
all brought out through male DB9 a connectors.
Serial port definition as table below:
Interface
Pin
Pin Defination
Device Node
Level
Serial Port
COM1
2
RXD0
/dev/ttyS0
RS232
UART0
3
TXD0
5
GND
COM2
2
RXD1
/dev/ttyS1
RS232
UART1
3
TXD1
5
GND
COM3
232
2
RXD2
/dev/tty S2
RS232
UART2
3
TXD2
5
GND
485
8
A
RS485
9
B
COM4
232
2
RXD3
/dev/ttyS3
RS232
UART3
3
TXD3
5
GND
485
8
A
RS485
9
B
2.2 USB-HOST Interface
STAD150WT-15 is integrated with 3-way USB-HOST, to connect various
USB peripherals, such as USB mouse and keypad, flash drive, USB
