Often, a hard-drive based JACE-NXT or JACE-NXS does not have the special SITOP DC UPS module (with battery accessory), in
which case its PowerMonitorService will have no application. The following slots do apply to the CompactFlash-based JACE-NXT or JACE-NXS, which will be so equipped.
Currently, through the PowerMonitorService, a station running in a JACE-NXT or JACE-NXS provides status monitoring of the following items, via “Boolean” type slots:
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DC power
(“Primary Power Present” slot) — True whenever DC power is currently supplied to the UPS.
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Battery level
(“Battery Ok” slot) — True if last UPS backup-battery test was good.
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UPS Connectivity
(“Ups Talking” slot) — value is “talking” if last JACE attempt to communicate to the UPS was successful. Another possible state is “no comm.” Note that a USB cable must be connected between the JACE-NXS and the SITOP UPS module.
If needed, you can make Px bindings or links to these slots (however, see PlatformServices binding and link caveats). In addition to these read-only status slots, this PowerMonitorService provides related configuration slots, which you typically review at commissioning time.
For more details and a related procedure, refer to: