Chapter 10 - Bar Graphs, Meters, Trends and XY Plots
This chapter focuses on four special graphic objects that can be used to display PLC data registers. You read in Chapter 7
how to use text and bitmaps to represent the data in PLC registers as states. You also read in Chapter 8 how to use
alphanumeric data fields to display the contents of PLC registers as either numbers or ASCII characters. We now introduce
for more options to display the data in PLC registers:
Bar Graph Objects
Meter Display Objects
Trends
XY Plots
Creating Bar Graphs
The Bar Graph Object is used to represent the data in a 16-bit or 32-bit PLC register as a bar graph. Data in the PLC register
can be interpreted as unsigned, signed, BCD, or hexadecimal. You can configure the bar graph to move up, down, right, or
left. The bar graph can be configured with any base number that represents 0 level and any span range.
4
To create a Bar Graph Object
1. From the
OBJECTS
menu, click
Bar Graph
, or click the
Bar Graph
icon in the Objects
toolbar. The mouse cursor changes to a crosshair. Select the location on the screen to place the Bar
1010-0300, Rev 02
Bar Graphs and Meters
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