66 Rockwell Automation Publication 1756-UM022D-EN-P - May 2017
Chapter 4 Communicate over Networks
These products are available for EtherNet/IP networks.
Producing and Consuming Data via an EtherNet/IP Network
The controller supports the ability to produce (send) and consume (receive)
tags over an EtherNet/IP network. Produced and consumed tags each require
connections. The total number of tags that can be produced or consumed is
limited by the number of available connections.
Connections over the EtherNet/IP Network
You indirectly determine the number of connections the safety controller uses
by configuring the controller to communicate with other devices in the system.
Connections are allocations of resources that provide more reliable
communication between devices compared to unconnected messages (message
instructions).
EtherNet/IP connections are unscheduled. An unscheduled connection is
triggered by the requested packet interval (RPI) for I/O control or the
program (such as an MSG instruction). Unscheduled messaging lets you send
and receive data when needed.
The
1756-ENBT EtherNet/IP communication module supports 128
Common Industrial Protocol (CIP) connections over an EtherNet/IP
network. The
1756-EN2T, 1756-EN2TR, and 1756-EN3TR communication
modules support 256 CIP connections.
Table 18 - Product for EtherNet/IP Modules
Product Is Used to Required
Studio 5000® environment • Configure the controller project
• Define EtherNet/IP communication
Yes
BOOTP/DHCP utility
(1)
(1) This utility comes with the Studio 5000 environment.
Assign IP addresses to devices on an EtherNet/IP network No
RSNetWorx™ for EtherNet/IP
software
Configure EtherNet/IP devices by IP addresses and/or host names No
RSLinx® software • Configure devices
• Establish communication between devices
• Provide diagnostics
Yes
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