Rockwell-automation Logix5000 Controllers Controller Information and S Manual do Utilizador descarregar pdf (Página 38)

Chapter 3 Controller logging

Create custom log entries

You can add custom entries to the controller log using a message instruction. The

message instruction uses a CIP Generic message type and a service type of

Controller Log Add Entry.

The source element of this message should be a tag of a user-defined data type. The

user-defined data type should contain two string members. The controller writes

the first string to the log entry's Description field. The controller writes the second

string to the log entry's Extended Information field.

The following rung of ladder logic shows how to send the message instruction,

followed by the Configuration dialog box of the message instruction and the

definition of the user-defined data type used for the source element.

Example:

Send the Message ladder instruction, Controller Log Add Entry configuration dialog box, and Data Type

dialog box

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

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Rockwell-automation Logix5000 Controllers Controller Information and S Manual do Utilizador Página 38