Graph Process
Data
WATVIEW
includes a powerful graphing feature. Multiple graph setups can be
created, named and saved. These graph setups specify which parameters to
graph, which time period and vertical axis limits to display and other
graph options.
The trend plot database contains process variable values and certain
other parameters for all the controllers in the system. This data is
used to generate graphs on the Trend Plot screen. The data is
accumulated at a user-set rate and maintained for a user-set number of
days. Data can be exported from the database to a tab-delimited, text
file that can be used with other programs.
Recipes
A recipe is a collection of parameter settings saved in a file. Recipes
may be downloaded from the computer to one or more controllers to change
the operating conditions of the system.
You can determine which parameters are stored in a recipe by creating
a recipe type. A recipe type is a template for recipes, and can include
parameters from one controller or several. It can even include
parameters from more than one type of controller.
Use the Recipe Editor screen to create recipes. While you are editing
a recipe in the editor, none of your changes will be transmitted to
controllers. After you have set all the parameters, you can send them to
the controllers by downloading the new recipe.
There also are two ways to download recipes automatically:
- WATVIEW can be set to download a recipe at a certain time and day
or on a regular schedule. This feature can be used to prepare a
process before operators arrive, or to automate recipe changes and
eliminate operator error.
- WATVIEW can be configured to download, upload or prompt the user
to choose a recipe whenever it is run. It automatically downloads a
recipe upon rebooting after a power failure, and can choose between
two recipes based on the time it takes to restore power.
Event Log
The event log is a file containing a record of user actions, alarms,
recipe downloads and other significant events that occur while WATVIEW
is running. This text log file may be viewed in WATVIEW or copied and
viewed in a text editor.
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