
Appendix A
Choosing Network Settings
A-2
ni.com
•
To determine whether an IP address is already used by another device
on the network, select
Start»Run
, type
ping x.x.x.x
where
x.x.x.x
is the IP address you want to test, and click
OK
. If
ping
returns a timeout, the IP address is not used. If it returns a reply from
a device, the IP address is already in use.
•
A subnet is a set of systems whose IP addresses are configured such
that they can communicate directly with one another. Data does not
flow through an intermediate router. The most common subnet mask is
255.255.255.0
.
•
Appropriate subnet masks should be chosen to divide your system into
smaller subnets, as desired. The method for determining the subnet is
as follows:
The IP Address is combined in a logical AND with the subnet mask to
determine the subnet. For example, a system with an IP address of
10.10.10.10
and a subnet mask of
255.255.255.0
is on the
subnet of
10.10.10.x
. Thus, all systems with an IP of
10.10.10.x
and a subnet mask of
255.255.255.0
are considered to be on the
same subnet. Likewise, if the systems have a subnet mask of
255.255.0.0
, all systems with an IP of
10.10.x.x
are considered
part of the same subnet.
•
Using the
Suggest Values
button when configuring a network
module’s IP address in FieldPoint Explorer should result in values that
work on your network.
•
The Time Server is the address of the computer where you have
installed the National Instruments Time Service. This service is
installed along with the FieldPoint software, Lookout 4.0 or later,
and the LabVIEW Datalogging and Supervisory Control module.
•
If you are setting up your own network, you probably do not have a
gateway or DNS server, so you should set these values to
0.0.0.0
.
•
To find out the network settings for your computer, run
ipconfig
on
Windows 2000/NT/XP or
winipcfg
on Windows 98/95.
To run
winipcfg
, select
Start»Run
, type
winipcfg
in the
Open
field, and click
OK
. The IP Configuration window appears, which
gives you information about the network setup for your computer.
Make sure that the correct Ethernet adapter appears in the field at
the top of the window.
To run
ipconfig
, open a Command window, type
ipconfig
at the
prompt, and press <Enter>. If you need more information, you can run
ipconfig
with the
/all
option by typing
ipconfig /all
. Make
sure you use the settings for the correct Ethernet adapter to configure
your FP-20
xx
.