MC_ExtSetPointGenEnable
The external set value generator of an axis can be switched on with the function block MC_ExtSetPointGenEnable. The axis then adopts the set value specifications from its cyclic axis interface (Axis.PlcToNc.ExtSetPos, ExtSetVelo, ExtSetAcc and ExtSetDirection).
An external set value generator is usually a PLC block that calculates cyclic set values for an axis and can therefore substitute the internal set value generator in an NC axis.
See also: MC_ExtSetPointGenDisable and MC_ExtSetPointGenFeed
Inputs
VAR_INPUT
Execute : BOOL;
Position : LREAL;
PositionType : E_PositionType;
END_VAR
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Execute |
The command is executed with the rising edge. |
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Position |
Position for target position monitoring. Setting of this position does not mean that the axis moves to this position, for which only the external set value generator is responsible. Setting of this position activates target position monitoring, and the flag Data type ST_AxisStatus becomes TRUE, as soon as this position is reached. |
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PositionType |
Position type - POSITION TYPE_ABSOLUTE or POSITION TYPE_RELATIVE |
Outputs
VAR_OUTPUT
Done : BOOL;
Busy : BOOL;
Error : BOOL;
ErrorID : UDINT;
Enabled : BOOL;
END_VAR
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Done |
Becomes TRUE, if the command was issued successfully. |
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Busy |
Becomes TRUE as soon as the function block is active, and becomes FALSE when it has returned to its initial state. |
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Error |
Becomes TRUE, as soon as an error occurs. |
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ErrorID |
If the error output is set, this parameter supplies the error number |
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Enabled |
Enabled shows the current state of the external set value generator, independent of the function execution. |
Inputs/outputs
VAR_IN_OUT
Axis : AXIS_REF;
END_VAR
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Axis |
The axis data structure of type AXIS_REF addresses an axis uniquely within the system. Among other parameters it contains the current axis status, including position, velocity or error status.