Rockwell Automation FactoryTalk Historian SE ActiveView 3.2 User Guide - Manual (Page 39)

Chapter 3
31
For Developers: Administering
FactoryTalk Historian ActiveView
Flow of Information
When you open a Web page with FactoryTalk Historian ActiveView
content, the flow of information occurs as follows:
1. Open Internet Explorer and browse to an Internet or intranet address
(URL) for a stored HTML Web page. The Web page downloads from
the Web server unless it is already cached on your PC. The PC's
Internet settings determine how long an existing page is stored before
it is discarded.
2. The Web page instructs the browser to create an instance of the
ActiveView Control (pbdctrl.ocx) on your PC.
3. The Web page sets the DisplayURL (page 62) property of the
FactoryTalk Historian ActiveView Control. This property tells where
the Display Document (.pdi) is stored. The Control downloads the
display (.pdi), which may be stored separately from the HTML page.
The Control then opens acview.exe. See also Expiration of
Displays (page 34).