Historical Consumption Previous Day, Month and Year

Four outputs display the historical consumption of the previous day, the previous month and the previous year:

NOTE:

It is obvious that these values are only available when the specific day, week, month or year has passed. This means that the values can be read after 00.01 o'clock.

Exponent for Monthly and Yearly Consumption

The values "Cons_ActWeek", "Cons_ActMonth", "Cons_ActYear", "Cons_PrevWeek", "Cons_PrevMonth" and "Cons_PrevYear" can have values larger than 10,000,000. Therefore the outputs for weekly, monthly and yearly consumption provide the parameters SYS-01 and SYS-03 for
defining the exponent.

Example:

The output is 12458 and the exponent is 3. This means, the consumption is 12458 1E3 = 12,458,000

The value of the exponent for the yearly and the monthly consumption can be different.


WARNING!

The macro cannot cumulate the consumption during power failure. The error depends on the total power failure time since start-up. Since the values are saved only once per day in the controller’s flash memory (to prolong the lifetime of the flash) it can happen that a whole day’s consumption can be lost. Keeping the historical values is better than resetting these values after power failure and restarting from zero. Whoever wants to restart the accumulation of the historical values can reset them or manually adjust them as described in the actions below.

Table 3.   Parameter List

Description

Value Range

Default Value

Unit

SYS-01: exponent weekly

0…6

0

-

SYS-02: exponent monthly

0…6

0

-

SYS-03: exponent yearly

0…6

0

-