Rockwell Automation 5720 DriveLogix System - Manual (Page 144)

Publication 20D-UM002C-EN-P - November 2003
6-28 Communicating with Devices on an EtherNet/IP Link
Each produced tags requires one connection for the producing controller and
an additional connection for each consuming controller. Each consumed tag
requires one connection.
Example 2: Total connections required by DriveLogix1
The following table calculates the connections used in this example.
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.
Connection: Amount:
DriveLogix1 controller to 3 local I/O modules
rack-optimized connection for the DIN rail
direct connection for each I/O module
1
3
DriveLogix1 controller to local 1788-ENBT 0
DriveLogix1 controller to remote 1788-ENBT 0
connected, cached MSG from DriveLogix1 to
DriveLogix2 1
produced TagA
produced from DriveLogix1 to DriveLogix2
other consumer (2 are configured)
1
1
consumed TagB 1
total connections used: 8