A VoltageOutputWritable is a NumericWritable with NdioVoltageOutputProxyExt. It represents a 0-to-10Vdc analog output (AO). All standard NumericWritable features apply, including right-click actions and priority input scheme (see “About writable points” in the User Guide).
The point’s Proxy Ext contains common Ndio Proxy Ext properties. Among those properties, note that the read-only “Device Facets” is set to units Volts (V). For operation in units other than volts, see Scale and offset calculation (linear).
In addition to the common Ndio Proxy Ext properties, the following additional properties are also available, contained under a container slot.
The following four Hardware Override properties were intended for a I/O hardware module that was never released with NiagaraAX
support. Therefore, they are not functional and can be safely ignored.
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Overridden
(read only, transient) Either false or true, as to whether the hardware override switch is active. Uses Baja data type Boolean.
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Fault Enable
Either false or true (default). Enables a hardware override to mark the parent point in fault (while overridden is true).
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Alarm Enable
Either false (default) or true. Enables a hardware override to mark the parent point in alarm (while overridden is true).
If you configure both Fault Enable and Alarm Enable true, a fault alarm is generated upon an active hardware override.
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Alarm Class
The alarm class to use for a hardware override-generated alarm or fault.