Catalogs > Automation Systems Catalog > Programmable Controllers > ControlLogix System > Communication Modules
Communication Modules
| Introduction |  |
Environmentals and Certifications | |
EtherNet/IP Network | |
ControlNet Network | |
DeviceNet Network | |
| Data Highway Plus and Remote I/O Networks | |
Foundation Fieldbus Network | |
Serial Communication | |
DH-485 Network | |
SynchLink Communication | |
|
ControlNet Network
The ControlNet network is an open, control network for real-time, high-throughput applications. The ControlNet network uses the Common Industrial Protocol (CIP) to combine the functionality of an I/O network and a peer-to-peer network providing high-speed performance for both functions. The ControlNet network gives you deterministic, repeatable transfers of all mission-critical control data in addition to supporting transfers of non-time-critical data. I/O updates and controller-to-controller interlocking always take precedence over program uploads and downloads and messaging.
ControlNet Communication Modules
Specifications [PDF]
| Cat. No. | Description | Communication Rate | Logix Connections | Number of Nodes |
| 1756-CN2 | ControlNet communication bridge module, standard media | 5 Mbps | 100 | 99 |
| 1756-CN2R | ControlNet communication bridge module, redundant media | 5 Mbps | 100 | 99 |
| 1756-CNB | ControlNet communication bridge module, standard media | 5 Mbps | 40…48 | 99 |
| 1756-CNBR | ControlNet communication bridge module, redundant media | 5 Mbps | 40…48 | 99 |
| 1756-CN2RXT | ControlLogix-XT, ControlNet communication bridge module, redundant media | 5 Mbps | 100 | 99 |
Example Configuration—ControlNet Network
|
Example Configuration—Redundant ControlNet Media
Redundant ControlNet media requires these components:
- 1756-CN2R or 1756-CNBR ControlNet module
- Two identical ControlNet links
|
Accessories—ControlNet Network
| Cat. No. | Description |
| Taps | |
| 1786-TPR | ControlNet T-tap right angle |
| 1786-TPS | ControlNet T-tap straight |
| 1786-TPYR | ControlNet Y-tap right angle |
| 1786-TPYS | ControlNet Y-tap straight |
| Cables | |
| 1786-CP | Programming cable to ControlNet RJ45 port |
| 1786-RG6 | ControlNet network, shielded high flex cable |
| 1786-RG6F | ControlNet network, quad shield high flex coax cable |
| Other | |
| 1786-XT | ControlNet termination resistor |
| Repeaters | |
| 1786-RPA | ControlNet modular repeater adapter |
| 1786-RPCD | ControlNet coaxial hub repeater |
| 1786-RPFRL | ControlNet fiber ring repeater, long |
| 1786-RPFRXL | ControlNet fiber ring repeater, extra long |
| 1786-RPFS | ControlNet fiber ring repeater, short |
| 1786-RPFM | ControlNet fiber ring repeater, medium |