Interface Diagnostics Configuration 62 I/O Rate Point An IO Rate point measures the rate at which the interface writes data to its input tags. The value of an IO Rate point represents a minute average of the total number of values per minute that the interface sends to the PI Server. When the interface starts, it writes 0 to the IO Rate point. After running for ten minutes, the interface writes the IO Rate value. The interface continues to write a value every 10 minutes.
When the interface stops, it writes 0. The ICU allows you to create one IO Rate point for each copy of this interface. Select this interface from the
Interface drop-down list, click
IO Rate in the parameter category pane, and check
Enable IORates for this interface.
As the preceding picture shows, the ICU suggests an
Event Counter number and a
Tagname for the IO Rate Point.
Click the Save button to save the settings and create the IO Rate point. Click the
Apply button to apply the changes to this copy of the interface. You need to restart the interface in order for it to write a value to the newly created IO Rate point. Restart the interface by clicking the
Restart button The reason you need to restart the interface is that the PointSource attribute of an IO Rate point is Lab) To confirm that the interface
recognizes the IO Rate Point, look in the pipc.log fora message such as
PI-ModBus 1> IORATE: tag sy.io.etamp390.ModbusE1 configured. To seethe IO Rate point’s current value (snapshot, click the
Refresh snapshot button