Emerson Micro Motion 3711, Configuration And Use Manual, Page: 94 / 234

86 Micro Motion
®
Model 3711 Gas Flow Computers
Managing History, Events, and Alarms
8.3 Configuring history points
The default history configuration is designed to log all history data required by typical applications.
This function is provided by the eleven predefined points in standard history (see Table 8-2).
You need to configure additional history points only if your application has requirements that are not
handled by the default configuration, or if history points will be needed by an FST. See Section 11.3
for FST requirements for history setup. Be sure to review the history point configuration before
application startup.
If you need to change the number of history points at a later time, you must perform a Cold Start &
Clear History (see Section 14.2.2). Before making this change, save the existing data history to a file
(see Section 8.4.3).
Note: If you change history point configuration but do not change the number of points, a Cold Start
& Clear History is not required.
To configure history points:
1. Click
Configure > History Points
.
2. Open the Setup panel. The window shown in Figure 8-1 is displayed.
Figure 8-1 History Setup – Setup panel
3. Specify the number of standard history points that you want to use.
Note: For each standard history point, space is reserved in memory for 840 daily entries and 24
hourly entries.