MCFB_StepAbsolutes
Description
This function block performs a static homing function by setting Actual Position to the position of an absolute encoder. No physical motion is performed in this mode. Equivalent to MC_SetPosition is performed with SetPosition coming from absolute encoder reading, but with the option of using the once per rev feedback value.
The following figure shows the function block I/O:
Figure 7-246: MCFB StepAbsolute
Arguments
Input
En |
Description |
Enables execution (FFLD only ) |
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Data type |
BOOL |
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Range |
— |
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Unit |
N/A |
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Default |
— |
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Execute |
Description |
Request the homing step procedure at rising edgeA rising edge is the transition of a digital signal from low to high. It is also called positive edge |
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Data type |
BOOL |
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Range |
[0 , 1] |
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Unit |
N/A |
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Default |
— |
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AxisID |
Description |
Name of a declared instance of the AXIS_REF library function |
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Data type |
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Range |
[1 , 256] |
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Unit |
N/A |
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Default |
— |
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Mode |
Description |
Define the actual position assignment source
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Data type |
BOOL |
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Range |
[0 , 1] |
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Unit |
N/A |
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Default |
— |
Output
Done |
Description |
Indicates the move completed successfully. The Command Position has reached the endpoint |
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Data type |
BOOL |
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Unit |
N/A |
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Busy |
Description |
High from the moment the Execute input is one-shot to the time the move is ended |
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Data type |
BOOL |
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Unit |
N/A |
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Active |
Description |
Indicates this move is the active move |
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Data type |
BOOL |
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Unit |
N/A |
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CommandAborted |
Description |
Indicates the move was aborted |
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Data type |
BOOL |
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Unit |
N/A |
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Error |
Description |
Indicates an invalid input was specified or the move was terminated due to an error |
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Data type |
BOOL |
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Unit |
N/A |
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Error |
Description |
Indicates an invalid input was specified or the move was terminated due to an error |
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Data type |
BOOL |
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Unit |
N/A |
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ErrorID |
Description |
Indicates the error if Error output is set to TRUE
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Data type |
INT |
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Unit |
N/A |
Related Functions
Example
Structured Text
//Write current once per rev feedback position to overall axis position
MCFB_StepAbsolute( ExecuteHome, Axis1, ModeHome );
Ladder Diagram
Function Block Diagram