The element is an information-control dialog around the data source parameter — an expanded parameter passport. Unlike the simple passport, the expanded one, in addition to information, provides the ability to control the parameter attributes and display the history of the standard attributes in both a trend and a data table.

Information and control for parameter attributes remains the primary function provided in the "View" tab, where the attribute table is formed as their are, with the "Name" and "Value" columns. The table is active and if you select an entry of the accessible to write attribute and at corresponding permissions (root:op), a field for entering new values will be provided at the bottom.

The history is provided in the following two tabs "Trends" and "Data", which may not be available in the absence of the history-archives at standard attributes. The "Trends" tab contains a graphics area, of the primitive "Diagram", on most of the window, and a table at the bottom with the names, colours, and graph scales. The graphs are updated periodically and built with a period of 1 second and a fixed depth of 1 hour. The "Data" tab contains only the "Document" primitive field with a table with attribute values in columns that is updated with a period of 1 second for the history data period and to a depth of 100 records. The following items of the representative parameter structures are considered standard attributes with history:
- Analog signal:
  - var — variable.
- PID-regulator:
  - sp — setpoint;
  - out — output;
  - auto — mode: automate.
- Discrete assembles:
  - com — command "Open";
  - close — command "Close";
  - stop — command "Stop";
  - st_open — state "Opened";
  - st_close — state "closed".

In the trends of the analog parameters building the attributes are separately processed for alarm [aMin...aMax] and warning scales [wMin...wMax], which are also displayed in the graph.

This dialogue is currently the main one and has replaced the simple passport dialogue.

Author: Roman Savochenko <roman@oscada.org>
Sponsored by: PAC HARTRON
Version: 1.2.1
License: GPLv2