2 - install the adapter, Prepare for an installation, Chapter 2 – Rockwell Automation 2100-ENET CENTERLINE 2100 Motor Control Centers EtherNet/IP Network Adapter User Manual
Page 13: Install the adapter, Chapter
Rockwell Automation Publication 2100-UM006A-EN-P - July 2013
13
Chapter
2
Install the Adapter
This chapter provides instructions for installing the adapter.
Prepare for an Installation
Before installing the adapter, refer to these guidelines:
•
Make sure the Ethernet switch is the correct type. A managed switch that
supports Internet Group Management Protocol (IGMP) snooping is
usually recommended. An unmanaged switch can be used instead if
RSLogix 5000 software, version 18 or later, 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,
–
EtherNet/IP Network Infrastructure Guidelines
–
Ethernet Design Considerations Reference Manual, Rockwell
Automation publication
•
Understand IGMP Snooping/Ethernet Switches
The 2100-ENET adapter is a multicast device. In most situations, an
IGMP snooping (managed) switch is required. If more than one
2100-ENET adapters are connected to the switch, a managed switch is
required—otherwise the end device can fault on a communication
(comms) loss. The 2100-ENET adapter, RSLogix 5000 software,
version 18 or later, and a ControlLogix® or CompactLogix™ controller
supports unicast. When all Ethernet connections are set up as unicast
devices in RSLogix 5000 software, then an IGMP snooping (managed)
switch is not needed.
Much of EtherNet/IP network 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.
Topic
Page
Connect the Adapter to the End Device