User`s guide

Configure Physical Serial Ports
Chapter 5 Configure Ports 77
Configure Automatic Detection
Automatic detection and its role in Automatic Device Recognition
The Automatic Device Recognition feature allows the Digi Passport unit to
automatically detect and recognize attached devices and the serial parameters
for the devices. The port configuration settings for automatic detection are
used to determine the baud rate and other serial characteristics for the serial
port, based on a user-defined list. Automatic Device Recognition takes this
device recognition a step further, to determine the operating system and host
name of the attached equipment.
There are several elements to automatic detection settings: the port automatic
detection list, the automatic detection state, and the rules for performing
automatic detection. Each of these elements has factory default settings that
can be modified through the Basic or Advanced serial port configuration
settings.
Port automatic detection list
The Port automatic detection list: a set of serial characteristics used to
probe serial ports once automatic detection is active. Probe criteria include
baud rate; data, parity and stop bits, a string to be sent during the probe, and
how long to wait for a response. The port automatic detection list is defined by
selecting Port automatic detection configuration on the main Configuration
screen for ports. 16 entries can be made in the list, and they will each be
tested in order listed when Automatic Device Recognition tests the port. Here
is an example port automatic detection list: