Neousys POC-500 Series, Руководство пользователя

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POC-500 Series
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4.1 COM1/ 2 Port Configuration
The system’s COM1/ 2 ports support RS-232 (full-duplex), RS-422 (full-duplex) and
RS-485 (half-duplex) mode. You can set the COM1/ 2 operating mode via BIOS
settings. The option in the BIOS setting called “ Slew Rate ” defines how sharp the
rising/falling edge is for the output signal of COM1/ 2. For long-distance RS-422/485
transmission, you may set the “ Slew Rate ” option as “High” to improve signal quality.
For RS-422/485 communication, the “ RS-422/485 Termination ” option determines
whether to enable/disable internal termination of RS-422/485 transceiver according
to your wiring configuration (e.g. with or without external termination).
To set COM1 operating mode:
1. Press F2 when the system boots up to enter the BIOS setup utility.
2. Go to [Advanced]

[Peripheral Configuration] .
3. Set the [Set COM1 Mode as] option to the desired mode.
4. Once set, press F10 to save setting and exit.