Emerson Tescom ER5000 Series, Руководство пользователя, Страница: 137 / 248

ER5000 —
137
The ERTune™ Program: Basic Features
Figure 50: The Controls and Fields of the Plot Screen Variable Control Panel
The Plot Screen Variable Controls
By default, the Plot Screen displays the setpoint and feedback
values for your application. Using the controls in this area, you can
track up to two additional variables.
NOTE NOTE
CAUTION CAUTION
WARNING WARNING
These variables can also be added to data acquisition files
generated during the session.
Variable Name
Displays the names of all variables that can be tracked in the Plot Screen display.
Setpoint and feedback are always tracked. Up to two additional variables can be
added. You select each variable from the drop-down list. You must click the Plot
check box for a variable to add it to the Plot Screen display.
Plot Check box
Click the box next to a
variable to add it to the
Plot Screen display. This
also adds the variable
to any data acquisition
that takes place while it
is checked. Uncheck the
box to remove a variable
from display and data
acquisition. You can
continue to monitor its
value in the Value field.
Value Field
Displays the current value for a variable and updates
continually when the Plot Screen is active. Shows
values even when the Plot check box is unchecked.
Add Variable Button
Adds up to two additional variables, after which it is grayed out.
Legend
Shows the color of the line that
represents each variable in the Plot
Screen. These colors cannot be
changed.
Setpoint:
red line
Feedback: blue line
First Added Variable: green line
Second Added Variable: black line
Range Buttons
Click these buttons to open windows that allow you to set the
minimum, maximum and unit of measurement for Feedback
(44) and any additional variables. This range must accurately
reflect the actual range of the input source. Refer to the
IMPORTANT! note on the next page.