Rockwell-automation FactoryTalk Historian SE ActiveView 3.2 User Guide Manual de usuario descargar pdf (Pagina 81)

3 ● For Developers: Administering FactoryTalk Historian ActiveView

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CFParam.

Retry

This parameter specifies an action taken when the event returns. The

possible actions are:

Action

Value

Description

pbConnectRetry

Retry connection to Historian Server.

pbConnectDefault

Return control to FactoryTalk

Historian ActiveView.

pbConnectFail

Fail the connection.

Note: Developers must use the integer values for these

constants or define them within their scripts. These values can

also be looked up in the Visual Basic Object Browser.

CFParam.

MyData

This parameter is reserved for future use.

FailedDisplayURL Event

This event executes whenever the DisplayURL (page 62) property is

changed and the file to which it refers is invalid. This event has no

parameters; however, the host application can always get the current value

of the DisplayURL property. It can also respond to this event by setting the

property to a new URL.

Example

The following sample HTML script demonstrates how the

FailedDisplayURL and FailedServerIniURL (page 75) events can be

used to correct invalid references. When the page is loaded, the Display

URL refers to a file named fee.pdi and an ini file of eenie.ini. If

either of the URLs is invalid, then three additional display and

server.ini URLs are tried. The two URLs are always set in tandem.

<html>

<head>

Sub Window_OnLoad

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Rockwell-automation FactoryTalk Historian SE ActiveView 3.2 User Guide Manual de usuario Pagina 81