Rate of Change Error Dialogs

The period must be set to a value that is larger than the refresh interval for the Rate of Change tag to work properly.  Attempting to set either value such that this is no longer the case will result in the following error dialog:

                                                        

Acknowledge the dialog by clicking on the Close button, then adjust the complementary value (either a larger period or a smaller refresh interval) before continuing to set the value you were first attempting to set.