Maple Systems MAPware-7000 - Manual (Page 189)

MAPware-7000 Programming Manual 189
1010-1040, Rev. 02

Number of Grids - indicate the total number of grids that indicate the values (along the
y-axis) recorded on the trend graph. Range is 1 to 10.

Scale – enable to display the value scale.

Scale Color - Click on the button to display the color palette and select a color to
display the value scale
Resize a Trend object
Move the mouse pointer over one of the resize handles. When the pointer changes to a double-
headed arrow, simply click and drag to a new location.
Historical Trend
The Historical Trend object represents up to four target tag registers on an X/Y plot with values
recorded versus time. Registers can be consecutive or chosen individually. Values plot
according to a time interval specified in the target Start/End Time Tag registers. Values are read
from 8/16/32 bit registers in signed/unsigned, BCD, or floating-point format. The Historical
Trend graph differs from the Real-Time Trend graph listed above in that the Historical Trend
receives data from the Data Logger instead of real-time values taken from the PLC. Therefore,
you must configure a group of DataLog registers in the Data Logger before you configure a
Historical Trend graph (see Chapter 8 — DataLogger and Trending for more information).
Place a Historical Trend object on screen
1. Use one of the following:
a. Click Draw…Display Objects…Historical Trend from the standard menu
b. Click Advanced Objects… Historical Trend from the Draw toolbar
2. Move cursor to a start point for the Historical Trend Graph object. Click and hold mouse
cursor.