control-NumericWritable

NumericWritable extends NumericPoint to include 16 levels of command priority control. The highest priority active command is reflected in the Out property. Commands at the Manual and manual levels (1 and 8) are stored persistently.

This point is available in the Points folder of the control palette and usually resides in a device’s Points folder.

Figure 208. Numeric Writable property Sheet

You can access these properties in the Property Sheet by expanding Station > Config > Drivers > Points and double-click on NumericWritable.

Property	Value	Description
Facets	Config Facets window	Defines the unit of measure for a numeric value: `units` defines the unit of measure, for example from `acceleration` to `volumetric flow`. `precision` defines the number of decimal places.
Proxy Ext, Out	value	Reports an analog numeric value.
Proxy Ext, In1–16	values	Indicate from where the point’s value originates, including details specific to the parentage of the point’s network and communications (driver). null indicates that the point is an empty placeholder.
Proxy, Fallback	value	Configures a default `Out` value for a point when a priority scan of inputs `In2` – `In7` and `In9` – `In16`returns a null or invalid value, and no emergency action (`In1`) or manual action (`In8`) has occurred.
Override Expiration	read-only	Reports how long a value that has been set manually (using an action) remains valid.

Actions

This component supports the following actions:

Emergency Override: sets an output value at the emergency level.
Emergency Auto: clears an output value set at the emergency level.
Override: sets an output value at the manual level.
Auto: clears an output value set at the manual level.
Set: opens the Set window where you can enter a numeric value with a single decimal place.