High Speed Counter
The proxy extension contains configuration properties for rate calculation, and a status property for total number of pulses counted since the counter was last set or reset.
Figure 431. High Speed Counter tab
You access this view from the main menu by clicking , double-clicking the NrioNetwork driver, double-clicking a module, clicking the Point Manager link, followed by clicking the hyperlink to the right end of the High Speed Counter point.
| Property | Value | Description |
|---|---|---|
| Facets | additional properties | Refer to High Speed Counter Facets. |
| Proxy Ext | additional properties | Refer to High Speed Counter Proxy Ext properties. |
| Out | read-only | Reports the current value of the proxy point and its status. |
High Speed Counter Facets
Facets determine how a point’s value displays in the station. High Speed Counter facets include a minimum, maximum, and decimal precision.
Figure 432. High Speed Counter Facets and Edit facets window
The Edit window opens when you click the Edit button.
| Property | Value | Description |
|---|---|---|
| Quantity | drop-down list, defaults to misc () | Configures the formula. |
| Unit | defaults to null | Configures the default unit. |
| max | number, defaults to Infinity | Defines the maximum high speed counter value. |
| min | number, defaults to negative Infinity | Defines the minimum high speed counter value. |
| precision | number, defaults to 1 | Defines the number of decimal places allowed. |
High Speed Counter Proxy Ext properties
Figure 433. High Speed Counter Proxy Ext properties
In addition to the standard properties (Status, Fault Cause, and Enabled), these properties support high speed counter proxy extensions.
| Property | Value | Description |
|---|---|---|
| Conversion | drop-down list, defaults to Default |
Defines how the system converts proxy extension units to parent point units.
NOTE: In most cases, the standard
Default conversion is best.
|
| Tuning Policy Name | drop-down list, defaults to Default Policy.
|
Selects a network tuning policy by name. This policy defines stale time and minimum and maximum update times. During polling, the system uses the tuning policy to evaluate both write requests and the acceptability (freshness) of read requests. |
| Read Value | read-only | Displays the last value read from the device, expressed in device facets. |
| Write Value | read-only | Displays the last value written, using device facets. |
| Poll Frequency | drop-down list, defaults to Normal |
Selects among three rates (Fast, Normal and Slow) to determine how often to query the component for its value. The network’s
Poll Service or Poll Scheduler defines these rates in hours, minutes and seconds. For example:
This property applies to all proxy points. |
| Instance | number | Defines the point’s I/O terminal address based on its hardware type.
If duplicated (same instance as same hardware type, same board), the point reports a fault status. If an edit attempt is made to an instance already in use by another proxy point, the system discards the edit, and retains the previous instance value. |
| Ui Type | read-only | Identifies the Nrio Universal Input point type: Resistive Input, Boolean Output, etc. |
| Output Select | drop-down list, defaults to Count |
Specifies if count total (Count) or count rate (Rate) is at the Out slot as a status numeric.
|
| Total | read-only | Reports the total number of pulses counted since the proxy extension was last set or reset. |
| Rate | read-only | Reports the calculated rate based on the Rate Calc configuration.
|
| Rate Calc Type | drop-down list | Defines the type of rate calculation: The purpose of these calculations is to report a meaningful value:
|
| Rate Calc | additional properties | Provides one to three properties to use in the rate calculation:
|
| Rate Calc Time | read-only | Reports the timestamp of the last rate calculation. |