Rockwell Automation Allen-Bradley DriveLogix 5730 User Manual page 160

7-26 Communicating with Devices on an ControlNet Link
Example 3: Total Connections Required by DriveLogix1
The following table calculates the connections used in this example.
Connection:
DriveLogix1 controller to 3 local I/O modules
rack-optimized connection for the DIN rail
direct connection for each I/O module
DriveLogix1 controller to local 1788-CNC
DriveLogix1 controller to remote 1756-CNB
DriveLogix1 controller to remote ControlNet PLC-5
connected, cached MSG from DriveLogix1 to Control1
connected, cached MSG from DriveLogix1 to PLC5C1
Produced TagA
produced from DriveLogix1 to DriveLogix2
consumed by PLC5C1
Consumed TagB from DriveLogix2
Consumed INT from PLC5C1
If you configured the local I/O modules as rack-optimized, you would only
need the DIN-rail connection to the I/O modules, reducing the above
example by 3 connections.
You can configure the 1756-CNB module to use no connection. This is
useful if you configure all direct connections to their associated I/O
modules and do not need a rack-optimized connection.
Amount:
1
3
0
1
1
1
1
1
1
1
1
total connections used: 12