System 450™ Series Control Module with Ethernet Communications Installation Instructions
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Setting Up Ethernet Communications
Obtain the information in this section and record the values in the fields provided. Your network administrator may
be able to provide most, if not all, of this Ethernet setup information. Use the following steps to connect your
computer to the router using a wired port or Wi-Fi:
1. Consult the user manual for the router or see your Network Administrator to obtain the router IP address,
username, and password.
• Record the router’s Internal LAN IP address (____.____.____.____).
• Record the username (__________) and password (__________).
2. Log in to the router using the router’s IP address and login credentials from Step 1. Access the configuration
and setup pages within the router.
3. Locate the router’s LAN setup screen to view the router’s subnet mask.
Note: The subnet mask is usually 255.255.255.0.
• Record the router’s subnet mask (____.____.____.____).
4. Determine the DHCP client address range used by the router. You can use addresses outside this DHCP
address range for static addressing.
Note: If the DHCP client address range does not provide space for the devices you need to add to the network,
reduce the DHCP client address range.
• Record the DHCP client address range (____.____.____.____ to ____.____.____.____).
5. Determine if there are any existing devices on the network that use a static IP address. Examples might
include printers, cameras, or other special equipment.
6. Determine the static address range. The static address range does not fall within the DHCP client address
range and does not conflict with any existing devices that use a static IP address. For example, if the DHCP
client address range is 192.168.1.2 to 192.168.1.100, the space available for static IP addressing would be
192.168.1.101 to 192.168.1.255.
• Record the static address range (____.____.____.____ to ____.____.____.____).
Establishing a Direct Connection
The Ethernet control module is shipped with the Direct Connect addressing mode enabled. When operating in
Direct Connect mode, the control module uses an integral DHCP server to provide an IP address to your computer
and enables communications between your computer and the control module.
After you have established a direct connection between your computer and the Ethernet control module (Figure 7),
you can use a web browser on your computer to browse to the Ethernet control module and set up the Ethernet
control module’s network configuration before connecting it to an existing local network.
You can also use the Direct Connection mode to connect and browse to System 450 communications control
systems that are not permanently connected to a network.
Figure 7: Direct Connection Between a Laptop and
a System 450 Communications Control Module
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