Siemens SIMATIC PCS 7 Operating Manual page 150

Functions
7.9 Graphical displays
Editing in the Trend Manager
Once you have selected the trend in the Trend Manager, the following is displayed for the
editable trend:
● Black trend points
Note
You can only edit trend points if the respective function is allowed by the device description.
● Adding trend points
● Deleting trend points
● Moving trend points
● Selecting multiple trend points
● Define the zoom area
● "Monotonic entry" check box
150
Trend points that can be edited
Hold down the "Ctrl" key. Click the drawing area in the chart.
– If the point you have clicked in the chart features on the trend line, the new point is
inserted into the trend between two existing points.
– If the point you have clicked in the chart falls outside the trend line, the new point is
added at the end of the trend.
– Press and hold down the "Alt" key. Click a trend point in the chart. The trend point is
deleted.
– Once a trend point has been selected, you can delete it by pressing the "Del" key.
– For multiple trend points:
Press "Ctrl" + "Alt" and click on the trend points to be deleted.
Hold down the "Ctrl" key. Click on a trend point in the chart and move it via drag-and-drop.
Note
The grid and other trend points have a magnetic effect on the point to be moved.
The trend points are captured by using a selection rectangle.
Click with the left mouse button to select the starting point for your rectangle. Then drag
the cursor across the chart while keeping the mouse button pressed. All the trend points
that fall within this rectangle are marked with a red dot.
The zoom area is captured using a selection rectangle.
Click with the left mouse button to select the starting point for your rectangle. Then drag
the cursor across the chart while keeping the mouse button and SHIFT key pressed. The
area inside the rectangle is part of the zoom area.
To enter monotonic data values, activate the "Monotonic entry" check box. The arrow
indicates the direction (monotonically ascending or monotonically descending).
Help for SIMATIC PDM (V8.2)
Operating Manual, 02/2014, A5E33203676-AA