FB_PMA_Scaling

The function block FB_PMA_Scaling_EL3783 is a special version of the function block FB_PMA_Scaling. It is used for scaling raw values provided by the EL3783 EtherCAT Terminal. The raw values can be scaled individually or as an array, for example as oversampling values. In addition, it is possible to use single-phase and three-phase input signals. The function block supports the Autorange functionality of the EL3783, which can operate in two current measurement ranges.

Syntax

Definition:

FUNCTION BLOCK FB_PMA_Scaling_EL3783
VAR_INPUT
    stInitPars       : ST_PMA_Scaling_EL3783_InitPars;
VAR_OUTPUT
    bError           : BOOL;
    ipResultMessage  : I_TcMessage;
    bNewResult       : BOOL;
END_VAR

Inputs

The input parameters of this function block represent initialization parameters and have to be assigned during the declaration of the function block instance (alternatively: Init method). They may only be assigned once. A change at runtime is possible by calling the Init method again.

Name	Type	Description
stInitPars	ST_PMA_Scaling_EL3783_InitPars	Function block-specific structure with initialization parameters

Outputs

Name	Type	Description
bError	BOOL	TRUE if an error occurs.
ipResultMessage	I_TcMessage	The interface offers detailed information about the return value.
bNewResult	BOOL	TRUE when new results were calculated.

Methods

Methods can be used to scale different systems (single-phase or three-phase).

Name	Description
Call_1Ph	The method is called to scale the input data in a single-phase system of type INT according to the configured parameters.
Call_1Ph_Autorange	The method is called to scale the input data in a single-phase system of type INT according to the configured parameters.
Call_3Ph	The method is called to scale the input data in a three-phase system of type INT according to the configured parameters.
Call_3Ph_Autorange	The method is called to scale the input data in a three-phase system of type INT according to the configured parameters.
Init	Alternative to the function block initialization
Reconfigure	The method is called in order to reconfigure the function block during the runtime.

Requirements

Development environment	Target platform	PLC libraries to include
TwinCAT v3.1.4024.0	PC or CX (x86, x64)	Tc3_PowerMonitoring