MC_ReadBoolParameter

This function block reads a boolean parameter value from the axis.
The command is typically processed synchronously.

Syntax

Definition:

FUNCTION_BLOCK MC_ReadBoolParameter
VAR_INPUT
    Axis        : Type_PtpReadWriteParameter;
    Enable      : BOOL;
    ParameterId : EAxisParameterId;
    Mode        : EReadMode;
END_VAR
VAR_OUTPUT
    Valid       : BOOL;
    Busy        : BOOL;
    Error       : BOOL;
    ErrorId     : UDINT;
    Value       : BOOL;
END_VAR

Inputs

Name	Type	Default	Description
Axis	Type_PtpReadWriteParameter		Reference to the axis
Enable	BOOL		Triggers a read on rising edge (EReadMode.Once) or every cycle while TRUE (EReadMode.Cyclic).
ParameterId	EAxisParameterId		Identifier of the parameter to read.
Mode	EReadMode	Once	Once: read once at rising edge of Enable. Cyclic: read every cycle while Enable is TRUE.

Outputs

Name	Type	Description
Valid	BOOL	Valid output available at function block.
Busy	BOOL	Function block is not finished. Always FALSE with ReadMode Once.
Error	BOOL	Error occurred within function block.
ErrorId	UDINT	Error identifier
Value	BOOL	Last successfully read value of the parameter.

Weiterführende Informationen

Alternativ kann der Achszustand aus der PLC über die AXIS_REF Struktur ausgelesen werden.

myAxis.McToPlc.Std.AxisState

Informationen zu den einzelnen Zuständen sind im Abschnitt Zustandsdiagramm zusammengefasst.

Versionsinformation

TwinCAT Standard >= v3.1.4026.23.1
TF5500 MC3 Base >= v4.0.6