16 Rockwell Automation Publication 5000-UM005B-EN-P - November 2015
Chapter 1 Analog I/O Module Operation in a Logix5000 Control System
Connection Over EtherNet/IP
During module configuration, you must configure the Connection over
EtherNet/IP parameter. The configuration choice dictates how input data is
broadcast over the network.
The 5069 Compact I/O analog I/O modules use one of the following methods
to broadcast data:
• Multicast - Data is sent to all network devices
• Unicast - Data is sent to a specific controller depending on the module
configuration
Input Module Operation
Logix5000 controllers do not poll the 5069 Compact I/O analog input modules
for input data. Instead, the modules send their input data, that is, channel and
status data, at the RPI.
At the RPI, not only does the module send input data to the controller, but also
the controller sends data to the module inputs. For example, the controller sends
data to command the module to unlatch alarms or enable alarms.
Input Module to Controller Data Transmission
The following events occur when a 5069 Compact I/O analog input module
sends data to the controller.
1. The module scans its channels for input data.
2. The module sends the data to the 5069 Compact I/O system backplane.
3. The 5069-AEN2TR EtherNet/IP adapter in the 5069 Compact I/O
system sends the data over the EtherNet/IP network.
4. One of the following:
• If the owner-controller is directly connected to the EtherNet/IP
network, it receives the input data from the network without need for a
communication module.
• If the owner-controller is connected to the EtherNet/IP network
through another communication module, the module transmits the
data to its backplane and the controller receives it.
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