ZWave proxy points typically use a ZWaveProxyExt—except for setpoints under a ZWaveThermostat device, which use a ZWaveThermostatSetPointProxyExt. Both proxy extension types share the same set of properties. Each is a proxy for one piece of data of interest in a Z-Wave device. This single piece of data is determined by the corresponding Z-Wave command class, and results in a descriptive default name for the parent Z-Wave proxy point.
Figure 18 shows an example ZWaveProxyExt expanded in the property sheet of ZWave proxy point.
In addition to typical ProxyExt properties, the proxy extension for any ZWave proxy point includes these Z-Wave-specific properties:
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Instance
Used for any point, the Instance number from 1 to
n. Typically this is 1 unless the device’s associated Z-Wave command class has a “count” more than 1. For related details, see the section on Node Info. Also refer to the target Z-Wave device’s vendor documentation for application details. -
Rewrite Emergency Cmds
Used only when the parent point is a writable point, with a default value of false. Setting this to true causes the driver to rewrite the Write Value when the following are both true:
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the Read Value does not match the Write Value, while
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the active level is Level 1 or Level 2.
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Age
Displays the current age of this value. This value updates only when the point is subscribed and the poll method is executed. Its main purpose is in support of non-listening (battery-powered) devices to provide time information about the data.
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Next Wake Up In
Used only for points in non-listening devices that implement the WakeUp command class, it displays count down time until this value should update from the WakeUp command class. This value only updates when the point is subscribed and the poll method is executed.