GE Industrial Solutions Control System Toolbox For Configuring the Trend Recorder - Manual (Page 35)

GEH-6408A Trend Recorder Chapter 5 Viewing Trends
•
27
À To view Stacked Traces
To return to normal view,
choose Stacked Traces again.
w
From the View menu, choose Stacked Traces . A check mark (
ä) displays
beside the command when in stacked mode.
The order of signals in stacked mode matches the order in the lower Signal
View of the Trend Recorder window.
If there are too many traces in one graph to display every signal in stacked view, the
Trend Recorder automatically returns to normal view. To adjust the number of signal
traces in a view:
Click to maximize
screen.
•
Maximize the size of the screen.
•
Or, remove signal(s) from the list in the lower Signal View. (From the Edit
menu, choose Remove Signal .)
•
Or, choose a smaller screen font size. (From the Options menu, choose
Settings , then choose the tab Trending .)
À
To change the position of a signal in a stacked trace
1. From the lower Signal View , click on the signal(s) to move.
2. From the Edit menu, choose either Move Signal Up or Move Signal Down .
– Or –
1. Click on the desired signal with the right mouse button.
2. From the pop-up menu, choose Move Up or Move Down .
Auto-Ranging the Displayed Data
The auto-range function examines the range of values for each signal in the time
range currently displayed on the Trend Recorder. The range of each signal is then
adjusted to display the graph using as much of the display area as possible.
Or click Auto Range
Vertical Axis
À
To auto-range the displayed data
w
From the Edit menu, choose Auto Range Vert. Axis .
X-Y Plots
The Trend Recorder can convert plots of data that have been recorded in real time
and re-plot the data where one (or more) of the variables in the trended set is
designated as the X-axis. X-Y plots are normally created using the data between the
replay cursors.
There are two modes of X-Y plots: Between Cursors, which is the normal mode, and
At Left Cursor.
Between Cursor mode plots the values that are between the two cursors against the
designated X-axis. This mode of X-Y plots is available for all types of trends.
At Left Cursor mode is available only for Data Historian collected trends. In this
mode, the X-Y plot is generated using the entire data set in the individual .dca data
file(s) that contain the sample time currently at the left cursor. This would typically
be used to do an X-Y plot of all the data for an individual unit of a batch
manufacturing operation, where data for each unit in the batch is collected in its own
.dca file.