A BooleanOutputWritable is a BooleanWritable with NdioBooleanOutputProxyExt. It represents a digital output (DO). Depending on I/O platform, this may be a relay output or triac output. All standard BooleanWritable features apply, including right-click actions, priority input scheme, and minimum on/off properties (for details, see “About writable points” in the User Guide).
The default operation is normal logic (closed contacts at DO if input value “true”). If needed, you can “flip” this logic
in the ProxyExt by assigning a Conversion type of “Reverse Polarity.” This causes the “reversed” boolean state going from
input to output.
In addition to the common Ndio Proxy Ext properties, the following additional properties are also available, contained under a container slot:
The Hardware Override properties apply only to an I/O hardware module that was never released into production. Therefore,
you can safely ignore the following properties under the Hardware Override slot:
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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.