5.5.1   Data Log Trend Groups

At least one DATALOG Trend Group must be configured to view Data Log values for all your Tags. Operators and users can add tags to this group or replace them "on-the-fly" in VIEW without loosing data.

The groups provide a fast an efficient way to specific a large number of pre-built Display Trends with names that are meaningful to operators and ordinary users.

To open the Data Log Trend Pop-up Dialog Box with a list of all these Data Log Trend Groups.

Select the Standard Toolbar button   

Or Press the F4 key on the keyboard

Or Right Click -> Goto -> Data Log Trend (in a web browser VIEW)

Or on the ViewDAQ menubar, select Goto -> Data Log Trend

Figure 5.12 - Data Log Trend List Box

Datalog Trends are plotted versus Time (the X-axis is Time), similar to a strip-chart recorder. (Figure 5.13)


Figure 5.13 Data Log TREND


Datalog X-Y Plots are plotted versus a selected Tag. (Figure 5.14) Any of the twelve tags can be selected as the X-axis; the other 11 tags are plotted on the Y-axis.  Data Log Plots are commonly used to show a relationship between two tags).

Figure 5.14 Data Log X-Y PLOT