Understanding attribute state

At any given time an attribute can be in one of eight states. State depends on:

• The current value of the attribute.

• The pre-defined permissible operating range or threshold for that attribute.

• The workflow the attribute is currently involved in.

• The overall context of the control system.

State is shown as an icon to the left of the attribute name in the Block Information Panel.

State reference¶

Normal¶

Data is within an acceptable operating threshold or range. For a Parameter Attribute this also means the value has been successfully committed to the server.

Processing¶

Data has been submitted to the server or a retrieval request has been made. A response is being awaited.

Locally Edited¶

The value has been changed in the UI but not yet committed to the server. The local edit has no effect on the running system and will not be saved as part of the Design until it is submitted.

Update Error¶

The value submitted to the server was not accepted — typically because it failed the validation defined in the Block specification.

Warning¶

An issue has been detected that requires investigation. Data is outside normal operating parameters but is still considered acceptable.

Error¶

An issue has been detected and an error has been reported by the server. Data is outside acceptable operating conditions; immediate action is recommended.

Invalid¶

The overall block context has changed since the UI was last accessed. Displayed data may no longer be accurate or consistent with the current Design.

Disconnected¶

Communication with the block hosting the attribute has been lost by the server. Immediate investigation is recommended.

Presenting status information¶

Within Block Information Panels, the state icon appears to the left of each attribute name.

When viewing historical data in the attribute value table, the corresponding icon is shown against each row.

When viewing historical data in the attribute chart, the line colour reflects the alarm state.