MC_AxRtSetExtGenValues_BkPlcMc (from V3.0)

The function block supplies an axis with command variables, which do not originate from the axis' own generator.

Inputs

VAR_INPUT
    Enable:             BOOL;
    Position:           LREAL:=0.0;
    Velocity:           LREAL:=0.0;
    TargetPosition:     LREAL:=0.0;
END_VAR

Name	Type	Description
Enable	BOOL	TRUE at this input activates the transfer of the command variables provided.
Position	LREAL	[mm] Set position value to be transferred cyclically.
Velocity	LREAL	[mm/s] Set velocity value to be transferred cyclically.
TargetPosition	LREAL	[mm] Target position value for the current motion to be transferred cyclically.

Inputs/outputs

VAR_INOUT
    Axis:               Axis_Ref_BkPlcMc;
END_VAR

Name	Type	Description
Axis	Axis_Ref_BkPlcMc	Here, the address of a variable of type Axis_Ref_BkPlcMc should be transferred.

Outputs

OUTPUT
    Error:              BOOL;
    ErrorID:            UDINT;
END_VAR

Name	Type	Description
Error	BOOL	The occurrence of an error is indicated here.
ErrorID	UDINT	An encoded indication of the cause of the error is provided here.

Behavior of the function block

The function block investigates the axis interface that has been passed to it every time it is called. If a rising edge is detected at Execute, the axis is put in state McState_Synchronizedmotion and iTcHydStateExtGenerated.

If Execute is TRUE, the values of Position, Velocity and TargetPosition are entered in the runtime variables of the axis. The purpose is to map the behavior of the generator function block for a comparable motion, as far as possible.

If a falling edge is detected at Execute, the function block puts the axis in the state McState_Standstill. If the axis is not at standstill at this time, it is stopped via the time-controlled ramp set in fStopRamp.

	The generator function block of the axis should still be called cyclically. It deals with position control and updates further internal variables.