Bar Graphs; Bar Graph Functions - Omron NT20S-ST121B-EV3 User Manual

Bar Graphs

4-5

Bar Graphs

4-5-1

Bar Graph Functions

Bar Graph Attributes
The contents of the numeral memory table entries of the NT20 can be dis-
played as bar graphs as well as numeral data.
This section describes the bar graphs which can be displayed.
In order to change the data displayed in a bar graph, the contents of its
numeral memory table entries have to be changed.
For details on how to update the data of a currently displayed bar graph, refer
to 5-2-5 Upgrading Bar Graphs (Changing the Contents of Allocated Words)
on page 189, and Four-digit Write Numeral Memory Table on page 219.
The bar graph function displays a value in a bar graph form as a percentage
to the specified value according to the contents of a numeral memory table
entry. Up to 50 bar graphs can be registered in one screen.
• Reference Table Entries
The numeral memory table entries used as the reference for the bar graph
display can be set.
The Support Tool has the "direct" and "indirect" options for the reference
method of the numeral memory table. However, the NT20 recognizes the
"direct" method only.
The bar graph display cannot use hexadecimal numbers. If hexadecimal
numbers are set in the reference numeral memory table entries, the bar
graph cannot be displayed. Use caution not to write hexadecimal numbers
except the minus sign "F" to the reference numeral memory table entries.
The following attributes can be set with the NT20 for the bar graph display:
• Position and Size
The display position and size (length) of a bar graph can be set.
The width of the bar graph can be set in the range of 2 to 255 dots.
• Orientation and Incremental Direction
The orientation and incremental direction of the bar graph can be selected
from those described below.
↑ (up): The bar graph increments upward in the vertical orientation.
↓ (down): The bar graph increments downward in the vertical orientation.
← (left): The bar graph increments to the left in the horizontal orientation.
→ (right): The bar graph increments to the right in the horizontal orienta-
tion.
Direction: →
• Graph Frame
Select whether or not the graph frame (boundary line of a graph display
area) which indicates the effective display range is displayed.
← This frame is not displayed if
• Setting the 100 % Value and % Display
Direction: ↑
"Graph frame: No" has been set.
Section 4-5
147