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Configuring the LAN Properties
Machine Edition automatically assigns a set of default properties to the LAN. Select the LAN icon in
the LAN viewer to display or edit its communications properties in the Inspector pane:
LAN Name: this can be edited or the default name can be used. Space characters are not
permitted.
Description: an optional description of up to 255 characters can be entered for the LAN.
LAN ID: (read-only) this number identifies the LAN in the Machine Edition project.
Network Speed: the bandwidth available on the network. The default of 1Gbps can be changed to
100Mbps.
Maximum Utilization (%): the maximum percentage of total network bandwidth that can be used for
PROFINET I/O traffic. It can be edited to any value between 10 and 80 (do not enter the %
character). Consider other network traffic when changing this parameter.
IP Range Lower Limit: the lowest IP address for automatically assigning IP addresses to PNCs and
LAN devices. Default is 192.168.x.1, where x is the lowest number not used by another LAN in the
project.
IP Range Upper Limit: the highest IP address for automatically assigning IP addresses to PNCs
and LAN devices. Default is 192.168.x.254, where x is the lowest number not used by another LAN
in the project.
Subnet Mask: Mechanism that filters network communications so that they are routed only to
subnets to which they are addressed. The value defined here propagates to PNCs and I/O devices
throughout the network.
If the subnet mask is improperly set, devices may be unable to communicate on the
network and might disrupt network communications. Contact your network
administrator to assign values that work with an existing network.
PROFINET can only communicate to nodes in the local subnet. All nodes on the LAN must be in the
same subnet. The IP Range Lower/Upper Limits indicate the auto-assignment range. The range of
the LAN is the subnet mask range. A node can be assigned to any address in the subnet (which may
GFK-2571A
Caution
Chapter 3 Configuration
3
3-11
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