User's Manual

4.4 COM Port Interface
The computer provides  totally ten serial  ports for difference uses. Six of ten serial ports
(COM1~COM6) are implemented with Super I/O chip and their physical address are
fixed. And the other four serial ports are done by a USB serial converter, and need driver
support to work. In Advantech provided WES (Windows Embedded Standard) and Win
CE 6.0 OS, the four USB-to-Serial serial ports are fixed from COM8 to COM11).
Table 4.7: Serial Port Function
Port Function
COM1 2-wire RS-232 (TXD/RXD) for TREK-303
COM2 3-wire RS-232 (TXD/RXD/RTS) for Touch on TREK-303
COM3
Full functional RS-232
COM4
For power management control
COM5
RS-485
COM6
J1708
COM8
Full functional RS-232
COM9
4-wire RS-232 (TXD/RXD/RTS/CTS)
COM10
For WWAN module
COM11
For WWAN module
Table 4.7: Serial Port Settings
Port Address Range Interrupt
COM1 3F8 ~ 3FF 4
COM2 2F8 ~ 2FF 3
COM3
2E8 ~ 2EF 5
COM4
2D8 ~ 2DF 7
COM5
2E0 ~ 2E7 10
COM6
11
TREK-550 User Manual
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