User guide

Canopy System User Guide
pmp-0229 (Mar 2013)
157
Chapter 13: Engineering Your IP
Communications
Understanding Addresses
A basic understanding of Internet Protocol (IP) address and subnet mask concepts is required for
engineering your IP network.
IP Address
The IP address is a 32-bit binary number that has four parts (octets). This set of four octets has two
segments, depending on the class of IP address. The first segment identifies the network. The
second identifies the hosts or devices on the network. The subnet mask marks a boundary between
these two sub-addresses.
Dynamic or Static Addressing
For any computer to communicate with a module, the computer must be configured to either
• use DHCP (Dynamic Host Configuration Protocol). In this case, when not connected to the
network, the computer derives an IP address on the 169.254 network within two minutes.
• have an assigned static IP address (for example, 169.254.1.5) on the 169.254 network.
IMPORTANT!
If an IP address that is set in the module is not the 169.254.x.x network address,
then the network operator must assign the computer a static IP address in the
same subnet.