Rockwell Automation Publication 1769-UM021G-EN-P - October 2015 123
Chapter 6
Communicate over Networks
All CompactLogix™ 5370 controllers support these tasks over an EtherNet/IP
network:
• Control distributed I/O
• Send/receive messages to/from other devices on the same network or
another network
• Produce/consume (interlock) data between controllers
• Socket interface
CompactLogix 5370 L2 and L3 controllers support these tasks over a DeviceNet
network:
• Control distributed I/O
• Send messages to devices on the same network; the controller cannot
receive messages from other devices on the network.
All CompactLogix 5370 controllers also support temporary connections from
your computer via a USB connection.
EtherNet/IP Network
Communication
The EtherNet/IP network offers a full suite of control, configuration, and data
collection services by layering the Common Industrial Protocol (CIP) over the
standard internet protocols, such as TCP/IP and UDP. This combination of
well-accepted standards provides the capability that is required to support
information data exchange and control applications.
The CompactLogix 5370 controllers use socket interface transactions and
conventional communication over the EtherNet/IP network to communicate
with Ethernet devices that do not support the EtherNet/IP application protocol.
For more information on socket interface transactions, see Socket Interface with
CompactLogix 5370 Controllers on page 133.
Topic Page
EtherNet/IP Network Communication 123
DeviceNet Network Communication 135
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