Amending an Existing Point SECTION 3 Points
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The point value which is stored to disk may be Volatile or Non-volatile by
selecting or deselecting the Non-Volatile check-box. A Non-volatile point
ensures the preservation of the point's value at regular intervals. If power is
lost, or CX-Supervisor is shut down for any reason, then when the application
is restarted the point is initialised to the last saved value. These values are
saved in a project file with .NVP extension. To prevent unexpected operation,
this file is automatically deleted if further point changes are made in the
Developer. In this case points revert to their Default value.
Select the Validate Point is Within Specified Range check-box. This option is
only available for Input or I/O points of type Integer or Real. When checked, an
error message opens in the error log if the data passed to CX-Supervisor is
outside of the specified Minimum and Maximum range.
Click the OK button to accept the advanced settings, or the Cancel button to
abort the operation.
3-5 Amending an Existing Point
To modify an existing point, highlight the point from the points list and click the
button.
This results in the View Point dialog box being displayed as shown below, a
dialog box based on the Add Point dialog box:
The selected point can be redefined as described in chapter 3, Creating a
Point.
Note: If a point is renamed then any animations or scripts that were using the
previous point name become invalid. Run the Analyse Application tool to
check for References to non-existent points.
3-6 Deleting an Existing Point
To remove an existing point, highlight the point from the points list and click
the button. This results in a confirmation dialog box being displayed. Click
the Yes button to remove the point from the points database, or the No button
to abort the delete operation.
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