Rockwell-automation Logix5000 Controllers Controller Information and S Manual de usuario descargar pdf (Pagina 49)

Change detection Chapter 4

Tip:

Rockwell recommends using the DINT[2] data type to avoid limitations when working with LINT data types in

Rockwell Automation controllers.

You can use the Message Configuration dialog box to read or write to the

ChangesToDetect attribute through CIP Generic Messages. For complete

information on how to access data using an MSG instruction, refer to the

Logix5000 Controllers Messages Programming Manual, publication

1756-

PM012.

Use the following settings to configure the ChangesToDetect attribute using the

Message Configuration dialog box.

If you want to: In this property Type or select

Set controller events monitored

for changes

Message Type CIP Generic

Service Type Changes to Detect Set

Source tag_name of type DINT[2] or LINT 1

This tag represents a bit mask of the changes monitored for

the controller.

Destination Leave blank

Get controller events monitored

for changes

Message Type CIP Generic

Service Type Changes to Detect Get

Source Leave blank

Destination tag_name of type DINT[2] or LINT 1

This tag represents a bit mask of the changes monitored for

the controller.

AuditValue

Use the Get System Value (GSV) instruction to read the AuditValue attribute

programmatically.

You can use the Message Configuration dialog box to read the AuditValue

attribute through CIP Generic Messages. For complete information on how to

Rockwell Automation Publication 1756-PM015F-EN-P – October 2014 49

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Rockwell-automation Logix5000 Controllers Controller Information and S Manual de usuario Pagina 49