Aprotech GOLUB 45 Series, Руководство пользователя, Страница: 71 / 105

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APROTECH GmbH
Rathsbergstrasse 17
90411 Nuremberg / Germany
Trade register:
Nuremberg HRB 23727
USt.-Id-No.: DE 256 058 089
D-U-N-S: 31-260-0530
phone: +49 911 / 65 00 79-50
fax: +49 911 / 65 00 79-79
eMail: info@aprotech.de
Web: www.aprotech.de
Managing Director:
Peter Jung
Industrial Panel- and Box-PCs
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.