Allen-Bradley MicroLogix 1761-NET-ENI Manual de usuario descargar pdf (Pagina 85)

Publication 1761-UM006E-EN-P - August 2005

1761-NET-ENIW Web Server Capabilities 7-9

Auto-Refresh of Data View Pages

By default, each Data View page has an update frequency of 10

seconds. You can enter a refresh time in seconds (5 to 9999) and post

this information to the ENIW by clicking anywhere within the frame.

Figure 7.5 Auto-refresh Field

ENIW Update Timer

The ENIW provides a counter displaying the time, in seconds, since

the last PLC write to the ENIW. The counter resets to 0 whenever the

ENIW detects a valid write on one of the following nodes:

• 201 (Strings)

• 202 (Integers)

• 203 (Floating-points)

• 204 (Event Strings)

• 205 (Null String to Clear)

The counter displays a maximum value of 65,535 seconds. Once the

counter reaches that maximum, it displays a value of 65,535 until it

detects a valid write. The counter is viewable on all four of the ENIW’s

Data View pages.

Figure 7.6 ENIW Update Timer

TIP

To avoid excessive loading of the Ethernet network,

set the refresh rate as long as is practical for your

application and set the value to 9999 when not in

use.

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Allen-Bradley MicroLogix 1761-NET-ENI Manual de usuario Pagina 85