%EcoAve function

Old name

%EcoAveR

Function

The function returns the average of the specified object's values in an elapsed time period (given by the parameter ResetTrigger) according to the methodology based on flags of individual values entering the calculation. The result is a real value. Eval tag must be evaluated on a change (On change parameter). Function value occurrence time is rounded to a minute, i.e. second and milliseconds = 0.

Declaration

REAL %EcoAve(
   REAL in Arg, 
   REAL in ValidCriterion, 
   BOOL in ResetTrigger
 )

Parameters

Arg	Parameter which average is to be calculated.
ValidCriterion	Validation criterion value [%].
Impulse	Change of the parameter into the TRUE state causes evaluating the average, that is to be assigned to the eval tag value. At the same time, input values for next period of time (Arg) are to be processed.

Note

Flag type	Flag name	Meaning	Description for ESC Datalogger
CF	A	Measurement invalidity	<
CF	B	Unsteady operation	F
VF	C	Calibration	C
	D	Malfunction	B
	E	Maintenance	M
	F	Power supply failure	P
	G	Disabled – disable (switching stopped)	D
	H	Missing measurement
TF	I	Layoff	F
	J	Start
	K	Putting out of operation
	L	Fuel change (unsteady process)
	M	Desulphurization failure
	N	Reserve
IF	O	Reserve - fuel type - coal
IF	P	Reserve

Types of flags for Automated measurement system:

CF - complex flags (input attributes of value validity)
VF- validated flags (input attributes for measurement validity) - they condition A flag
TF- technological flags (input attributes of operation status) - they condition B flag
IF- informative flags

The value is valid if the A flag is not set, i.e. A=FALSE. The operation is stabilized if the B flag is not set, i.e. B=FALSE.

The following validation criteria are applied on CF flags of processed values:

Flag A Resultant value of flag is TRUE, if sample count containing at least one of VF flags (with TRUE value), is bigger than 100 - ValidKriterium (%) of all measurements in specific time period.
Flag B Resultant value of flag is TRUE, if sample count containing at least one of TF flags (with TRUE value), is bigger than 100 - ValidKriterium (%) of all measurements in specific time period.

Condition of flags processing:

Value with set at least one of VF flags is not included into average but a flag counter is added into it.
The processed values should have time with step of maximum 10 sec. If the value is missed during more than 10 seconds, the flag count „D“ - the counter for invalid measurements, is incremented.
If the resultant flag is „A“ TRUE, all flags that appeared in time period, are included in VF flags of calculated average.
If the resultant flag is „A“ FALSE, all VF flags are FALSE, even if some of them appeared in the processed data.
If the resultant flag is „B“ TRUE, all flags that appeared in time period, are included TF flags of calculated average.
If the resultant flag is „B“ FALSE, all TF flags are FALSE, even if some of them appeared in the processed data.