Allen-Bradley ControlNet Compact GuardLogix 1769, User Manual, Page: 11 / 100

ControlNet Overview Chapter 1
Bridge Across Networks
Some ControlNet modules support the ability to bridge or route communication
to and from different networks, depending on the capabilities of the platform and
communication devices.
IMPORTANT
You can only bridge across networks to communicate with devices. You
cannot bridge across networks to control I/O, even though RSLogix 5000
software can accept such a configuration in the I/O Configuration folder.
All I/O control must originate and end on the same physical network.
The following table describes how communication can bridge across networks.
Table 1 - Bridging Across Networks
A device on this network Can communicate with a device on this network
EtherNet/IP ControlNet DeviceNet
RS-232
(2)
EtherNet/IP Yes Yes Yes Yes
ControlNet Yes Yes Yes Yes
DeviceNet No No Yes No
RS-232 Yes
Yes
(1)
Yes Yes
(1) To use RSNetWorx for ControlNet software to configure and schedule a ControlNet network, we recommend
that you either connect to an EtherNet/IP network and bridge to a ControlNet network or use a 1784-U2CN
cable to connect directly to a ControlNet network.
(2) Typically, this is a point-to-point connection between a Logix5000 controller and another device, such as a
PanelView Plus operator terminal.
In Figure 2 , a workstation configures a drive on the DeviceNet network. The
workstation bridges from the ControlNet network to the DeviceNet network to
reach the drive. The bridge is a ControLogix chassis with ControlNet and
DeviceNet modules.
Rockwell Automation Publication CNET- UM001E-EN-P - June 2016 11