Rockwell Automation FactoryTalk Historian SE ProcessBook 3.2 User Guide User Manual

Page 126

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FactoryTalk Historian ProcessBook User Guide

108

Autorange

The trend displays with the value scale ending at the closest
available major axis. If the maximum is Autorange and the

minimum is not, the plot starts on the minimum value and
ends on the largest trace value (neither min nor max will be

on a major axis).

Database

The tag's Zero + Span attributes are used to specify the

maximum plot value.

0 (absolute value) The value you type is used as the value scale maximum.

13. From the Format list, select the number format for the scale. Database

is the default format. This number format is also applied to legend,
cursor, and ToolTip numbers.

Database

Database format uses the displaydigits FactoryTalk
Historian Point attribute to determine how many decimal
places to show. If the length of the number exceeds the
displaydigits

value, scientific notation is used.

FactoryTalk Historian ProcessBook trims trailing zeroes that

follow a decimal point. The Database format option is
intended for use with FactoryTalk Historian Tags only.

General

Shows all significant digits for a number except trailing zeros.
If the absolute value of the value is greater than 1e+7 or less

than 1e-5, the format will switch to use scientific notation.

Scientific

Most useful with very large numbers. The scientific format
used for trends displays in the format: 0.00E+00.

Custom
(#,##0.00, 0%)

Allows you to enter your own number format. See the

Table

of Format Values

(page 340) for examples.

14. Under Plot Time, from the Start and End lists, select a time. An

asterisk (*) represents the current time. You can also type a valid
FactoryTalk Historian Time (page 337) string.

15. In the Style list, select Full time stamp, Partial time stamp, or

Relative time stamp to indicate how time is displayed on the time
axis.

16. Click OK.

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