Transaction diagnostics

The Transaction diagnostic node contains all individual transactions.

Data for the Transaction node includes:

• Data quality icon

• Type of transaction

• Item ID

• Number of items

• Status

• Start time

• End time

  Note: Items shown below the Transaction node in the hierarchy depend on how a Communication Driver developer has customized the code and configuration of an individual Communication Driver. Items below the root level in this hierarchy are subject to customization and configuration of individual Communication Driver.

  The Status column indicates whether the transaction status is COMPLETE, ERROR, or INCOMPLETE. The following table shows icon colors for the normal/warning/error conditions for the Transaction node:

  Icon State	Icon Color	Transaction
  Initializing		Transaction is in progress.
  Normal		Transaction has completed successfully, and the OPC quality is good for all items or write completed with success.
  Warning		Transaction has completed successfully, and the OPC quality is uncertain or bad for at least one item or write completed with error in at least one item.
  Error		Transaction has completed with error, the OPC quality is uncertain or bad for all items or write completed with error.

Pending individual transactions are marked with a white icon (the state is undefined/pending). A transaction item element is always marked as active. Viewing completed transactions refers to viewing a snapshot. Data for an individual transaction item includes:

• Data quality icon

• Name of the item

• Read/write status

• Value

• Time

• Quality/result

• Message ID (MsgID)

• Location

The Quality/Results column shows the write complete code for demand write transactions and data quality for all other transactions. The R/W Status column displays R for read/refresh/property transactions or W for write transactions. The location is the path of the hierarchical item name.

For a demand write transaction, the data shown in the Quality/Results column indicates the success or failure of the item in the transaction.

• All zeros (00000000) specify that the item is successful.

• A positive number specifies that the item is successful but indicates a condition that you must record. You can double-click the item to open the Diagnostic Info dialog box, and view the write status data for additional information about the item.

• A negative number in the Quality/Results column indicates that the item in the transaction is not successful.

The following table describes the status icons for the normal, warning, and error conditions of the transaction items: