Allen-Bradley GuardLogix 5570

Rockwell Automation Publication 1756-UM022D-EN-P - May 2017 65
Communicate over Networks Chapter 4
EtherNet/IP Communication
For EtherNet/IP network communication in a GuardLogix system, you have
several modules to choose from. For CIP safety communication, including
safety I/O device control, choose any of the modules shown in
Table 17, except
the 1756-EWEB module that does not support CIP safety communication.
Table 17 lists the modules and their primary features.
EtherNet/IP™ communication modules provide the following features:
• Support for messaging, produced/consumed tags, HMI, and distributed
I/O
• Encapsulated messages within standard TCP/UDP/IP protocol
• A common application layer with ControlNet™ and DeviceNet™
networks
• Interface via RJ45, category 5, unshielded, twisted-pair cable
• Support for half/full duplex 10 M or 100 M operation
• Work with standard switches
• No network scheduling required
• No routing tables required
Table 17 - EtherNet/IP Communication Modules and Capabilities
Module Features
1756-ENBT • Connect controllers to I/O devices (requires an adapter for distributed I/O).
• Communicate with other EtherNet/IP devices (messages).
• Serve as a pathway for data sharing between Logix5000™ controllers (produce/
consume).
• Bridge EtherNet/IP nodes to route messages to devices on other networks.
1756-EN2T • Perform the same functions as a 1756-ENBT module, with twice the capacity for more
demanding applications.
• Provide a temporary configuration connection via the USB port.
• Configure IP addresses quickly by using rotary switches.
1756-EN2F • Perform the same functions as a 1756-EN2T module.
• Connect fiber media by an LC fiber connector on the module.
1756-EN2TXT • Perform the same functions as a 1756-EN2T module.
• Operate in extreme environments with -25…70 °C (-13…158 °F) temperatures.
1756-EN2TR • Perform the same functions as a 1756-EN2T module.
• Support communication on a ring topology for a Device Level Ring (DLR) single-fault
tolerant ring network.
1756-EN2TRXT • Perform the same functions as a 1756-EN2T module.
• Support communication on a ring topology for a Device Level Ring (DLR) single-fault
tolerant ring network.
• Operate in extreme environments with -25…70 °C (-13…158 °F) temperatures.
1756-EN3TR • Perform the same functions as the 1756-EN2TR module.
• Two ports for DLR connection.
1756-EWEB • Provide customizable web pages for external access to controller information.
• Provide remote access via an Internet browser to tags in a local ControlLogix® controller.
• Communicate with other EtherNet/IP devices (messages).
• Bridge EtherNet/IP nodes to route messages to devices on other networks.
• Support Ethernet devices that are not EtherNet/IP-based with a socket interface.
This module does not provide support for I/O or produced/consumed tags, and does not
support CIP safety communication.