GridConnect NET232, Руководство пользователя

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Configure
To use the Hostlist option, follow these steps:
1.
Enter a
Connect Mode
of 0x20 (
2X
). 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 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 1-65535. The default value is 250.
DATAGRAM TYPE:
Directed UDP:
When selecting this option, you will be prompted for the Datagram type.
Enter
01
for directed or broadcast UDP.
When the UDP option is in effect, the unit will never attempt to initiate a
TCP connection because it will use UDP datagrams to send and receive
data.
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 NET232/USBs, and to use an Ethernet connection
instead of a phone call, without having to change communications applications and make potentially
expensive phone calls.
To select Modem Mode, set the Connect Mode to
06
(no echo),
16
(echo with full verbose), or
17
(echo
with 1-character response).
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 06 (no echo), 16 (echo with full verbose), or 17 (echo with 1-character response).
NET232/NETUSB User Guide 3-25