Setting up the adapter, Preparing for set-up, Chapter 2 – Rockwell Automation 25B PowerFlex 525 Embedded EtherNet/IP Adapter User Manual
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Rockwell Automation Publication 520COM-UM001B-EN-E - March 2013
17
Chapter
2
Setting Up the Adapter
Since the EtherNet/IP adapter is embedded on the Main Control Board in the
PowerFlex 525 drive, the only required step is setting its IP address and
connecting it to the network.
Preparing for Set-Up
Before setting up the embedded EtherNet/IP adapter:
•
Make sure the Ethernet switch is the correct type. A “managed” switch that
supports IGMP snooping is usually recommended. An “unmanaged”
switch can be used instead if RSLogix 5000 (version 18 or greater) is used
and all devices on the network are configured for “unicast” I/O. For more
details, see the following documents:
–
EtherNet/IP Media Planning and Installation Manual
(ODVA publication 148)
–
EtherNet/IP Network Infrastructure Guidelines
(ODVA publication 35)
–
Ethernet Design Considerations Reference Manual
(Rockwell Automation publicat
)
•
Understand IGMP Snooping/Ethernet Switches
The embedded EtherNet/IP adapter is a multicast device. In most
situations, an IGMP snooping (managed) switch is required. If more than
one or two embedded EtherNet/IP adapters are connected to the switch, a
managed switch is required—otherwise the drive may fault on a Net I/O
Timeout network loss. The embedded EtherNet/IP adapter,
RSLogix 5000 (version 18 or greater), and a ControlLogix or
CompactLogix controller will support unicast. Unicast setup is required
when adding the drive to the I/O. When all embedded EtherNet/IP
adapters are set up as unicast devices, then an IGMP snooping (managed)
switch is not needed.
Much of EtherNet/IP implicit (I/O) messaging uses IP multicast to
distribute I/O control data, which is consistent with the CIP producer/
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.
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