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Technologies
STAD215WT/R-05 Equipment Manual
Release 01/2019
6
2.1 Serial Ports
STAD215WT/R-05 is integrated with 4 serial ports. UART0, UART1,
UART2, UART3 are RS-232 level converted,
All have been treated with
anti-static treatment.
UART2 and UART3 is 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
ttyS0
RS232
UART0
3
TXD0
5
GND
COM2
2
RXD1
ttyS1
RS232
UART1
3
TXD1
5
GND
COM3
232
2
RXD2
ttyS2
RS232 &
RS485
UART2
3
TXD2
5
GND
485
8
A
9
B
COM4
232
2
RXD3
ttyS3
RS232 &
RS485
UART3
3
TXD3
5
GND
485
8
A
9
B
2.2 USB-HOST Interface
STAD215WT/R-05 is integrated with 3-way USB-HOST, to connect
various USB peripherals, such as USB mouse and keypad, flash drive,
USB camera, etc
.
2.3 USB-DEVICE Interface
