Rockwell Automation 9301 Series RSView32 Users Guide - Manual (Page 487)

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RSView32 User’s Guide
For historical data, the rate determines how often the log file is
checked for new data. Do not specify a rate faster than the rate at
which the data is logged to the file. For example, if you set up periodic
logging with a 20–second interval, do not specify a rate less than 20
seconds, because no new data will be available.
Control Tag
Type a name for the folder that will contain the trend control tags.
Control tags are used to control the view of the trend at runtime.
When you save the trend configuration, a folder by this name will be
created in the Tag Database. This folder will contain the trend control
tags.
For example, if you type Trend1 in the Control Tag field, the system
will create a folder called Trend1. Each tag in the folder will have
Trend1 as the first part of its name.
For more information about these tags, see “Creating control for a
trend” on page 13-27.
Creating a legend
To include a legend, check the Show Legend box.
In the Pen Configuration tab, you can specify which pens you want
included in the legend and create a label for each pen.