Average power meter
- Block name
- ST call
- Knihovna
- Verze
- Description
- Inputs
- Outputs

Average power meter

Block name

T37_AveragePowerMeter

ST call

PROGRAM test
   VAR
 apm: LIB.HVAC.V1_0.T37_AveragePowerMeter;
   END_VAR
 
END_PROGRAM

Knihovna

LIB\HVAC

,

Verze

V1.0

Description

Calculation of derivation of input signal. Derivation is calculated from samples from time window. Input is sampled with defined time period and samples are saved in circular buffer. Number of samples in buffer and sample rate are defined by input parameters. Youngest and oldest samples are used to calculate derivation. Vlock should be used in specific situations, where is no need to sample input signal only on change of the value.

Inputs

Inputs	Name	Data Type	Retain	Must be connected	Description
In	udint	No	Yes	Input counter
N	udint	No	No	Number of samples in buffer
Reset	bool	No	No	Reset
WLen	time	No	No	Length of time window

Outputs

Outputs	Name	Data Type	Description
Out	real	Derivation value

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