Power-related counters or gauges are not defined in the PWG Imaging Systems Counters v1.1 (PWG 5106.1-2007), the PWG Imaging System State and Counter MIB v2 (PWG 5106.3-2008), or the current drafts of the PWG Power Management Model and PWG Imaging System Power MIB (4 December 2009).
However, several large enterprise customers have recently expressed interest in standardized power-related counters and gauges (e.g., for use by fleet management applications that track the operating costs of printers and MFDs).
Note: The abstract datatype Gauge (XML int / SNMP Gauge32) should be added to Table 1 in Section 2.3 of the PWG Power Management Model and the following text should be added to Section 5 Power Status Element Definitions.
The Power Counter group of Power Status elements contains the power counters and gauges for this Imaging System and MUST only be instantiated on the System object. The following OPTIONAL read-only elements are defined in the Power Counter group.
This read-only element specifies the lifetime number of transitions into the Hibernate power state in a positive 32-bit integer or zero (XML Schema/SNMP MIB) of this Imaging System.
This read-only element specifies the lifetime number of transitions into the On power state in a positive 32-bit integer or zero (XML Schema/SNMP MIB) of this Imaging System.
This read-only element specifies the lifetime number of transitions into the Standby power state in a positive 32-bit integer or zero (XML Schema/SNMP MIB) of this Imaging System.
This read-only element specifies the lifetime number of transitions into the Suspend power state in a positive 32-bit integer or zero (XML Schema/SNMP MIB) of this Imaging System.
This read-only element specifies the current actual power consumption in watts in a positive 32-bit integer or zero (for less than one watt, i.e., nominal none) of this Imaging System (as determined by actual power usage measurement).
Note: Compare with the PowerNominalWatts property in the Power Support group (which is not based on actual power usage measurement).
This read-only element specifies the *previous* month's actual power consumption in kilowatt hours in a positive 32-bit integer or zero (for less than one kilowatt hour, i.e., nominal none) of this Imaging System (as determined by actual power usage measurement).
Note: Because it specifies the *previous* month's power consumption, the value of this property will always be meaningful and may be read on any day of the current month (for reliable accounting).
This read-only element specifies the lifetime actual power consumption in kilowatt hours in a positive 32-bit integer or zero (for less than one kilowatt hour, i.e., nominal none) of this Imaging System (as determined by actual power usage measurement).