64 Rockwell Automation Publication CNET-UM001F-EN-P - February 2018
In this example, assume that each digital I/O module is configured for a rack-
optimized connection to the controller. Analog modules must be configured
for direct connections.
This table calculates the connections in this example.
Table 12 - Connection Calculations
System Connections Amount
Controller to local ControlNet communication
module
0
Controller to ControlNet adapters with digital
modules (rack-optimized connection to each
adapter)
2
Controller to ControlNet adapter with analog
modules (direct connection for each analog I/O
module)
2
Total connections used 4
The rack-optimized connection limits connections, but can also limit the
status and diagnostic information that is available from the digital
I/O modules.
To increase the number of available connections, use a rack-optimized
connection to any remote adapter with multiple digital I/O modules that
permit rack-optimized connections, instead of direct connections to those I/O
modules.
Connections for I/O
Modules