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Figure 5.3, Using i/o messaging 5-5 – Rockwell Automation 22-COMM-D DeviceNet Adapter User Manual

Page 49

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Using I/O Messaging

5-5

Figure 5.3 Example ControlLogix Ladder Logic Program

ControlLogix example program with a PowerFlex 40 at node address 1.

This rung enables the scanner (changes the scanner to RUN mode).

0

Local:3:O.CommandRegister.Run

ControlLogix example program with a PowerFlex 40 at node address 1.

This rung enables the scanner (changes the scanner to RUN mode).

This section retrieves the Logic Status and Feedback data from the sc

, and moves it to

specifc tags for use elsewhere in the ladder program.

1

Copy File
Source

Local:3:I.Data[0]

Dest

DriveInputImage[0]

Length

2

COP

This section retrieves the Logic Status

k data from the scanner, and moves it

2

DriveInputImage[0].0

DriveStatusReady

3

DriveInputImage[0].1

DriveStatusActive

4

DriveInputImage[0].3

DriveStatusForward

5

DriveInputImage[0].7

DriveStatusFaulted

6

DriveInputImage[0].8

DriveStatusAtReference

7

Copy File
Source

DriveInputImage[1]

Dest

DriveFeedback

Length

1

COP

This section takes the data from specific tags used elsewhere in the ladder program (Logic

8

DriveCommandStop

DriveOutputImage[0].0

This section takes the data from specific tags used elsewhere in the ladder program (Logic

9

DriveCommandStart

DriveOutputImage[0].1

10

DriveCommandJog

DriveOutputImage[0].2

11

DriveCommandClearFaults

DriveOutputImage[0].3

Command bits and Reference) and writes them to the scanner for output over the network.