Rockwell Automation 1756-L6x_L7x ControlLogix System User Manual - Manual (Page 90)

90 Rockwell Automation Publication 1756-UM001O-EN-P - October 2014
Chapter 5 Communication Networks
Figure 11 - ControlNet Network Overview
In this example, these actions occur via the ControlNet network:
• The controllers produce and consume tags.
• The controllers initiate MSG instructions that do the following:
–
Send and receive data.
– Configure devices.
• The workstation is used to do the following:
–
Configure the ControlNet devices and the ControlNet network.
– Download and upload projects from the controllers.
For more information about using ControlNet modules, see ControlNet
Modules in Logix5000 Control Systems User Manual, publication
CNET-UM001 .
ControlLogix ControlNet Module Features
The ControlNet communication modules provide these features:
• Support for messaging, produced/consumed tags, and distributed I/O
• Use a common application layer with DeviceNet and EtherNet/IP
networks
• Requires no routing tables
• Support the use of coax and fiber repeaters for isolation and increased
distance
• Support redundant media (only 1756-CNBR, 1756-CN2R, and
1756-CN2RXT modules)
ControlNet
Distributed I/O
• 1756-CNB
• 1756 I/O
• 1794-ACN15
• 1794 I/O
Workstation
CompactLogix
FlexLogix
• 1734-ACNR
• 1734 I/O
PanelView
PLC-5/40C15
PowerFlex 700S