Setting the ip address, Setting the ip – Rockwell Automation 20G PowerFlex 755 Drive Embedded EtherNet/IP Adapter User Manual
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Rockwell Automation Publication 750COM-UM001E-EN-P - October 2013
Chapter 2
Installing the Adapter
consumer model. Historically, most switches have treated multicast
packets the same as broadcast packets. That is, all multicast packets are re-
transmitted to all ports.
IGMP snooping constrains the flooding of multicast traffic by dynamically
configuring switch ports so that multicast traffic is forwarded only to ports
associated with a particular IP multicast group.
Switches that support IGMP snooping (managed switches) ‘learn’ which
ports have devices that are part of a particular multicast group and only
forward the multicast packets to the ports that are part of the multicast
group.
Be careful as to what level of support a switch has of IGMP snooping.
Some layer 2 switches that support IGMP snooping require a router
(which could be a layer 3 switch) to send out IGMP polls to learn what
devices are part of the multicast group. Some layer 2 switches can use
IGMP snooping without a router sending polls. If your control system is a
standalone network or is required to continue performing if the router is
out of service, make sure the switch you are using supports IGMP
snooping without a router being present.
•
for the number of CIP connections supported by the
embedded EtherNet/IP adapter.
•
Verify that you have all required equipment. See
Setting the IP Address
There are several ways to configure the embedded EtherNet/IP adapter IP address:
• Adapter Rotary Switches
— Use the switches when working on a simple,
isolated network (for example, 192.168.1.xxx) that has other products
with switches to set their IP addresses, does not need to be accessed from
outside the network, and you prefer a simplified node addressing method.
The three adapter switches are read when the drive powers up, and
represent three decimal digits from top to bottom. If set to a valid address
(001…254), the adapter will use that value as the lower octet of its IP
address (192.168.1.xxx, where xxx = rotary switch settings), along with a
subnet mask of 255.255.255.0 and there will be no gateway configured.
Also, the setting for adapter Parameter 36 - [BOOTP] is automatically
ignored.
See
Figure 1 on page 19
and its accompanying table for switch settings and
their related descriptions.
IMPORTANT
When using the adapter rotary switches, set the IP address before
power is applied because the adapter uses the IP address it detects
when it first receives power.