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Network Configuration

To be able to communicate over Ethernet the network interface needs a valid TCP/IP configura-

tion. This section explains some basic concepts in TCP/IP networking and describes how to

configure the TCP/IP settings in the Anybus X-gateway PROFINET IRT (2.32) interface using

the IPconfig software tool.

When Ethernet communication has been established the TCP/IP settings can also be changed

from the web interface. See

4.1

Basic TCP/IP Concepts

IP Address

The IP address is used to identify each node on a TCP/IP network. IP addresses are written as

four decimal integers (0–255) separated by dots, where each integer represents the binary val-

ue of one byte of the IP address. This is known as dot-decimal notation.

Example: 10000000 00001010 00000010 00011110 is written as 128.10.2.30

The following IP addresses are reserved for special purposes and cannot be used:

0.n.n.n

127.n.n.n

n.n.n.0

n.n.n.255

Subnet Mask

The IP address is divided into three parts: Net ID, Subnet ID and Host ID. A subnet mask is a

32-bit binary pattern, where a set bit allocates a bit for Network/Subnet ID, and a cleared bit al-

locates a bit for the Host ID. The subnet mask is usually written in dot-decimal notation.

Example: To make the IP address 128.10.2.30 belong to subnet 128.10.2, the subnet

mask must be 255.255.255.0.

Subnet mask:

Default Gateway

For devices to be able to communicate over Ethernet they must either belong to the same sub-

net or communicate via a gateway or router.

A gateway or router routes communication between networks, i.e. it enables the nodes on one

network to access the nodes on another. The default gateway address in the TCP/IP settings of

your product specifies the IP address of the gateway or router on the local network.

Anybus

X-gateway

™

PROFINET

Web Pages, p.

First byte zero — used for broadcast messages

First byte 127 — used for loopback addresses to the local host

Last byte zero — identifies a whole network/subnet

Last byte 255 — used for broadcast messages

11111111 11111111 11111111 00000000 (255.255.255.0)

Net ID / Subnet ID

IRT (2.32) Interface Network Guide

12.

Host ID

8 (18)

SCM-1202-028-EN 1.1