8: Setup Mode: Channel Configuration
UDS1100 User Guide
47
To enable the hostlist:
1. Enter a
Connect Mode
of 0x20 (
2
X), where X is any digit. The menu shows you a list
of current entries already defined in the product.
2. To delete, modify, or add an entry, select
Yes
. If you enter an IP address of
0.0.0.0
,
that entry and all others after it are deleted.
3. After completing the hostlist, repeat the previous step if necessary to edit the hostlist
again.
4. For
Retrycounter
, enter the number of times the Lantronix unit should try to make a
good network connection to a hostlist entry that it has successfully ARPed. The range
is
1-15
, with the default set to
3
.
5. For
Retrytimeout
, enter the number of seconds the unit should wait before failing an
attempted connection. The time is stored as units of milliseconds in the range of
10-
65535
. The default setting is
250
.
d) Datagram Type
Directed UDP
When selecting this option, the prompt requests the Datagram type.
Enter
01
for directed or broadcast UDP. Datagrams of type 01 can be
sent as a broadcast by enabling this option. The default is not to
broadcast.
Note:
Datagrams are sent as subnet-directed broadcasts.
When the UDP option is in effect, the unit never attempts to initiate a
TCP connection because it uses UDP datagrams to send and receive
data.
e) Modem Mode
In Modem (Emulation) Mode, the unit presents a modem interface to the attached serial
device. It accepts AT-style modem commands and handles the modem signals correctly.
Normally, there is a modem connected to a local PC and a modem connected to a
remote machine. A user must dial from the local PC to the remote machine, accumulating
phone charges for each connection. Modem Mode allows you to replace modems with
UDS1100s, and to use an Ethernet connection instead of a phone call. By not having to
change communications applications, you avoid potentially expensive phone calls.
To select Modem Mode, set the Connect Mode to
C6
(no echo),
D6
(echo with full
verbose),
D7
(echo with numeric response),
CF
(modem responses only, numeric
response), or
CE
(modem responses only, full verbose).
Note: If the unit is in Modem Mode, and the serial port is idle, the unit can still
accept network TCP connections to the serial port if Connect Mode is set to
C6
(no echo),
D6 (echo with full verbose), D7 (echo with numeric response, CF
(modem responses only, numeric response), or
CE (modem responses only, full
verbose).
Without Echo
In Modem Mode, echo refers to the echo of all of the
characters entered in command mode; it does
not mean
to
echo data that is transferred. Quiet Mode (without echo)
refers to the modem
not
sending an answer to the
commands received (or displaying what was typed).
Data Echo & Modem
Response
Full Verbose:
The unit echoes modem commands and
responds to a command with a message string shown in the
