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Rockwell Automation 5720 DriveLogix System User Manual

Page 178

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Publication 20D-UM002C-EN-P - November 2003

7-32 Communicating with Devices on a ControlNet Link

4. Create a consumed tag with the following properties:

5. In the RSNetWorx for ControlNet software, reschedule (save)

the network.

Example 3: 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.

For this tag property:

Type or select:

Tag Type

Consumed

Controller

The ControlNet PLC-5 that is producing the data

Remote Instance

The message number from the ControlNet configuration of the
ControlNet PLC-5 controller

RPI

A power of two times the NUT of the ControlNet network. For
example, if the NUT is 5ms, select an RPI of 5, 10, 20, 40, etc.

Data Type

The user-defined data type that you created.

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-CNC

0

DriveLogix1 controller to remote 1756-CNB

1

DriveLogix1 controller to remote ControlNet PLC-5

1

connected, cached MSG from DriveLogix1 to Control1

1

connected, cached MSG from DriveLogix1 to PLC5C1

1

Produced TagA

produced from DriveLogix1 to DriveLogix2

consumed by PLC5C1

1

1

Consumed TagB from DriveLogix2

1

Consumed INT from PLC5C1

1

total connections used: 12

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