Nuvo-5095GC Series User’s Manual
Copyright © 2017 Neousys Technolgy Inc. All Right Reserved.
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4.1.1 COM Port Configuration
There are totally five COM ports implemented on Nuvo-5095GC series. COM1, COM2 and
COM3 are located on the back panel. COM4 and COM5 are internally used for MezIO
TM
interface.
COM1 and COM3 of Nuvo-5095GC series support RS-232 (full-duplex), RS-422
(full-duplex) and RS-485 (half-duplex) mode, while COM2 supports RS-232 mode only. You
can set the operating mode of COM1/COM3 via BIOS settings. Another option in BIOS,
“
Slew Rate
”, defines how sharp the rising/falling edge is for the output signal of
COM1/COM3. For long-distance RS-422/485 transmission, you may set the “
Slew Rate
”
option as “High” to improve signal integrity. 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 configure COM1/COM3 operating mode:
1. When Nuvo-5095GC controller boots up, press F2 to enter BIOS setup utility.
2. Go to
[Advanced]
[Peripheral Configuration]
.
3. Set the
[Set COM1 as]
option to a proper mode for COM1.
4. Set the
[Set COM3 as]
option to a proper mode for COM3.
5. Set
[Slew Rate]
and
[RS-422/485 Termination]
if necessary according to your wiring
configuration.
