User`s guide

Table Of Contents
Trends
Mitsubishi Electric, MA00759F 139
6Trends
This chapter describes the functions trends, real-time trends and historical trends.
Trends are used to store data from the controller. There is no limitation regarding the
number of trends in a project, it is only limited by the total operator panel memory.
Trend data is stored in files, the name of which are indicated when the trend objects
are defined.
For E1022 only real time trend is available. E1012 does not support the trend object
at all.
Presentation in the Operator Panel
Trend curves can show historical data when the operator panel is running. For key
panels, mark the appropriate trend object and press [ENTER]. A dialog box will now
be shown, where the time interval and date for the data to be presented can be select-
ed. At the bottom of the box, ”History” is shown. To return to real-time display, press
[ENTER] again.
For touch panels, zoom buttons are used to zoom in the trend.
Zoom button Description
<< Rewind one time range
< Rewind 1/4 of a time range
- Zoom in
^ Return to the first displayed trend history picture
+ Zoom out
> Forward 1/4 of a time range
>> Forward one time range