Advantech SOM-5871, User Manual

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51 SOM-5871 User Manual
Chapter 3
A
MI BIOS
3.1.2.9 Console Redirection Settings (COM1)
Feature Options Description
Terminal Type
VT100
VT100+
VT-UTF8
ANSI Emulation: ANSI: Extended ASCII char set. VT100:
ASCII char set. VT100+: Extends VT100 to support
color, function keys, etc. VT-UTF8: Uses UTF8 encod-
ing to map Unicode chars onto 1 or more bytes.
Bits per second
9600
19200
38400
57600
115200
Selects serial port transmission speed. The speed must
be matched on the other side. Long or noisy lines may
require lower speeds.
Data Bits
7
8
Data Bits
Parity
None
Even
Odd
Mark
Space
A parity bit can be sent with the data bits to detect some
transmission errors. Even: parity bit is 0 if the num of 1's
in the data bits is even. Odd: parity bit is 0 if num of 1's
in the data bits is odd. Mark: parity bit is always 1.
Space: Parity bit is always 0. Mark and Space Parity do
not allow for error detection. They can be used as an
additional data bit.
Stop Bits
1
2
Stop bits indicate the end of a serial data packet. (A
start bit indicates the beginning). The standard setting is
1 stop bit. Communication with slow devices may
require more than 1 stop bit.
Flow Control
None
Hardware RTS/
CTS
Flow control can prevent data loss from buffer over-
flows. When sending data, if the receiving buffers are
full, a 'stop' signal can be sent to stop the data flow.
Once the buffers are empty, a 'start' signal can be sent
to re-start the flow. Hardware flow control uses two
wires to send start/stop signals.