Rockwell Automation FactoryTalk Historian Classic User Guide - Manual (Page 81)

Analyzing FactoryTalk Historian Classic Data Chapter 4
3. Enter the text of your comment, which is restricted to 255
characters.
4. Click OK to save your comment and close the dialog. The
comment is saved in the reporting tag along with the
date/time when the comment was added and the ID of the
user who entered the comment.
On future displays of this reporting tag, a numbered yellow marker
will indicate the annotated value. When the report user hovers the
mouse pointer over the annotated value, a tool tip will display the
text of the comment. The value comment will show up in every
report object that displays the selected reporting tag value.
An X-axis comment is a comment associated with a specific
date/time on the chart and is not associated with a reporting tag.
The X-axis comment provides a date/time limit on the time-series
chart. For example, when tracking the flow rate, an X-axis comment
allows you to indicate the start of the batch.
1. Right-click the start time of the batch in the chart and select
Add Comment > X-Axis from shortcut menu to display the
X-Axis Comments dialog box. This dialog box will allow you
to enter an X-axis comment for the time-series chart.
X-axis Comments
Rockwell Automation Publication HIST-UM001K-EN-E-June 2014 81