Energy Save
D0CA/D0C9/D0C8/D0CB 7-122 SM
7.20.4 CHECKING THE UP TIME BY DEVICE STATE
SP 8941 (Machine Status) keeps a record of the amount of time that the machine spends in
each mode.
SP8-941-001 Operation
Time
Cumulative time of the state in which the engine state
notification is enabled.
The state in which the engine is not running (such as when
storing to HD only with the controller) is excluded from the
running state.
SP8-941-002 Standby
Time
Cumulative time of the state in which the engine state is not
running.
SP8-941-003 Low Power
Time
Not used for this machine
SP8-941-004 Sleep mode
time
Cumulative time in Sleep Mode state.
SP8-941-005 Off Mode
Time
Cumulative time in which the Energy Saving state of the device
is Engine OFF state.
SP8-941-006 to
009
Down time Cumulative time in which the device is disabled because itself
or its component is in the following state.
• SP8-941-006: SC (excluding mode SC)
• SP8-941-007: Jam (plotter)
• SP8-941-009: Supply/PM unit end
With this data, and the power consumption values from the specifications, we can estimate the
amount of energy that is used by the machine.
This should only be used as a reference value, because the power consumption specifications
are measured in a controlled environment with a constant power supply.
To get an exact measurement at the customer’s site, a watt meter must be used to measure the
actual energy consumed.
To use SP8941 to calculate the energy consumed:
• At the start of the measurement period, read the values of SP8-941-001 to 005.
• At the end of the measurement period, read the values of SP8-941-001 to 005 again.
• Find the amount of time spent in each mode (subtract the earlier measurement from the
later measurement).
• Multiply this by the power consumption spec for each mode.
• Convert the result to kWh (kilowatt hours)
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