Rockwell-automation Logix5000 Controllers Controller Information and S Manual de usuario descargar pdf (Pagina 47)

Chapter 4

Change detection

You can use the controller change detection feature as an additional means of

detecting changes made to Logix5000 controllers.

• A unique audit value is generated when a project is downloaded to the

controller.

• When a change is detected in the controller, a new audit value is generated.

• ChangesToDetect mask allows you to programmatically configure the

events to monitor for changes.

• Controller change detection is integrated into the Logix Designer

application.

Important:

The change detection feature is not supported in version 19 or earlier.

Note the following considerations for change detection.

• Change detection is not available on the RSLogix Emulate 5000 Controller

and the SoftLogix5860 Controller, and the audit value is not populated.

• The 1769-L3x and 1769-L4x CompactLogix controllers do not support

storing log entries to removable media.

• Change detection is integrated in FactoryTalk AssetCentre version 4.1 and

later. FactoryTalk AssetCentre can be configured to detect changes in the

controller and read the controller's Controller Log.

• Change detection is not integrated with RSMACC utilities.

Two controller attributes support the Change Detection feature in version 20 and

later.

Attribute Name Description Access

AuditValue A unique value that is generated when a project is downloaded to the

controller or loaded from removable storage. When a change is detected this

value is updated.

To specify which changes are monitored, use the ChangesToDetect attribute.

GSV

Introduction

Controller change detection

Rockwell Automation Publication 1756-PM015F-EN-P – October 2014 47

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Rockwell-automation Logix5000 Controllers Controller Information and S Manual de usuario Pagina 47