16
MPS4264
Section 3: Operation
Setting Up an Ethernet Connection
Before an Ethernet connection can be established the IP
address need to be configured. This can be done manu-
ally with a “static” IP address or automatically using a
“dynamic” IP address automatically assigned to the MPS
by a DHCP server. If you will be using a “static” IP address,
then the IP address of the MPS must be manually set by the
user. The IP address assigned to the MPS must be compat-
ible with the network/host computer. If you will be using
a “dynamic” IP address, the MPS must be both configured
to obtain an IP address automatically and it must be on a
network with a DHCP server present.
Using a Static IP address
If you choose to use a static IP address, you must manu-
ally set the IP address of the MPS. The IP address you
choose to use must be compatible with the network the
MPS is being connected to. If you are simply connecting
the MPS directly to a host computer, then the IP address
of the MPS and the host computer must be compatible
and should both be configured manually. The range of
compatible IP addresses is defined by the subnet mask.
The standard default subnet mask is 255.255.0.0. This
default subnet mask requires the IP address of the module
and host computer must share the first two octets, or sets
of numbers. The third and fourth octets of the IP address
is variable, although it is recommended that the third
octet also be shared between the host computer and the
module. The subnet mast digits of “255” define that the
two IP addresses must have matching digits in those posi-
tions and the subnet mask digits of “0” allow the two IP
addresses to have unique values for those octets. No two
devices on a single network can share the same IP address.
Below are some examples of compatible IP addresses.
Example of matching the first three octets:
Subnet mask: 255.255.255.0
Host computer: 191.30.90.100
MPS module: 191.30.90.125
Example of matching the first two octets:
Subnet mask: 255.255.0.0
Host computer: 191.30.1.100
MPS module: 191.30.90.125
Example of NON-COMPATIBLE IP addresses:
Subnet mask: 255.255.255.0
Host computer: 191.30.5.1
MPS module: 191.30.90.5
When connecting the MPS and configuring the network,
you can choose to either change the IP address of the MPS
module to match the network, or change the IP address
of your host computer to be compatible with the MPS
module. If you choose to change the IP address of the host
computer to be compatible with the MPS, then:
The IP address of a Windows XP host computer can be
changed under:
Control Panel -> Network Connections -> Local Area
Network -> Properties -> Internet Protocol (TCP/IP) ->
Properties.
The IP address of a Windows 7 host computer can be
changed under:
Control Panel -> Network and Sharing Center -> Local
Area Connection -> Properties -> Internet Protocol
Version 4 (TCP/IPv4) -> Properties.
MPS4264 modules are shipped with a preset IP address
that uses the following format:
MPS4264: 191.30.90.XXX
(Where “XXX” is the last three digits of the unit’s serial number.)
The MPS4264’s IP address is set with the “IPADD” variable
in the IP Group of variables. This can be changed through
an existing Ethernet connection or through a serial
connection.
If an existing Ethernet connection can be
established (by changing the host computer’s IP address or
some other means) it is the preferred method. If it is not
possible, then a serial connection can be established with
the MPS.
If the IPADD variable is changed either through
an Ethernet connection or a serial connection, the new
address will not be effective until a “SAVE IP” command
has been issued and power has been cycled.
For more
information on the IPADD variable, “Set IP Address of
More information on
establishing a serial connection can be found in “Serial
Communications” on page 14. Once the IP address of
the MPS and host computer have been set to be compat-
ible, the connection should be tested. The best means of
doing this is to “ping” the MPS using the host computer’s
command prompt.
Using a Dynamic IP address
The MPS can be setup to have a IP address dynamically
assigned from a DNS server using DHCP. When the IP
address is set to 0.0.0.0 then DHCP is used. When DHCP is
active, the MPS’s DNS name is used to connect to the unit.
The DNS name is defined by the variable NAME in the LIST
IP group.
Remember that any changes to the
variables in the LIST IP group require
a SAVE IP command be issued and the
MPS must be restarted for them to take
effect.
Summary of Contents for MPS4264
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