Page tree
Skip to end of metadata
Go to start of metadata

%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 <
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  
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.

Write a comment…