70 Rockwell Automation Publication 1756-UM022D-EN-P - May 2017
Chapter 4 Communicate over Networks
2. After you physically install an EtherNet/IP module and set its IP
address, add the module to the Controller Organizer in your
GuardLogix controller project.
3. Use the Logix Designer application to download the project.
ControlNet Communication
For ControlNet communication, choose a 1756-CNB or 1756-CNBR
module for standard communication, or a 1756-CN2, 1756-CN2R, or 1756-
CN2RXT module for safety communication.
These products are available for ControlNet networks.
Table 19 - ControlNet Modules
If your application Select
• Controls standard I/O devices
• Requires an adapter for distributed I/O on ControlNet links
• Communicates with other ControlNet devices (messages)
• Shares standard data with other Logix5000 controllers (produce/consume)
• Bridges ControlNet links to route messages to devices on other networks
1756-CNB
• Performs same functions as a 1756-CNB module
• Also supports redundant ControlNet media
1756-CNBR
• Performs the same functions supported by the 1756-CNB module with higher
performance
• Supports CIP safety communication
1756-CN2
• Performs same functions as a 1756-CN2 module
• Also supports redundant ControlNet media
1756-CN2R
• Perform the same functions as a 1756-CN2R module
• Operate in extreme environments with -25…70 °C (-13…158 °F) temperatures
1756-CN2RXT
Table 20 - Products for ControlNet Modules
Product Is Used to Required
Studio 5000 environment • Configure the GuardLogix project
• Define ControlNet communication
Yes
RSNetWorx for ControlNet software • Configure the ControlNet network
• Define the network update time (NUT)
• Schedule the ControlNet network
Yes
RSLinx software • Configure devices
• Establish communication between devices
• Provide diagnostics
Yes
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