Rockwell Automation 1747-ACNR15 ControlNet Adapter Module User Manual - Manual (Page 24)

Publication 1747-UM003A-EN-P
3-4 Planning to Use Your ControlNet Adapter Module
Module Connections
Module connections are performed in a deterministic and repeatable manner.
This connection allows a memory and ControlNet bandwidth efficient way to
connect to an individual module with more I/O data than could be attempted
in the above rack connections, or to transfer M0/M1 file data.
Each rack and module connection can be configured with the following
connection types:
1. Exclusive Owner - specifies an independent connection where a single
device controls the output states in the target device. If you have an
existing Exclusive Owner connection to a target device, you cannot
specify another Exclusive Owner or Redundant connection to that same
target device.
2. Input Only - specifies an independent connection where a device
receives inputs from the target device and sends configuration data to
the target device. An Input Only connection does not send outputs; it
only receives inputs. You can specify multiple Input Only connections
to the target device from different originators.
3. Listen Only - specifies a dependent connection where a device receives
inputs from the target device, but does not send configuration data with
the target device. A Listen Only connection only functions properly
when another non-Listen Only connection exists to the same target
device. A Listen Only connection does not send outputs; it only receives
inputs. You can specify multiple Listen Only connections to the target
device from different originators.
Optimizing SLC ControlNet Adapter Rack Connections
Consider the following example placement of ControlNet devices when you
want to optimize your SLC ControlNet adapter connection:
NOTE
All Listen Only connections are terminated when all
associated independent connections are terminated.
Node Slot Device
1 1747-SCNR
2 0 1747-ACNR15
1 1746-IB16
2 1746-IB16
3 1746-OB16
4 1746-OB16
5 1746-NIO4I
6 1746-HSCE