WARNiNG!
The combination of spindle pitch error compensation with position control to an external encoder is not permitted.
The use of this FB is recommended when high-precision spindle positioning is required to compensate for the spindle pitch error.
WARNiNG!
The combination of spindle pitch error compensation with position control to an external encoder is not permitted.
Please note when using this FB:
The PLCopen status "Standstill" is entered as soon as the uncompensated setpoint specification has reached standstill. The motion FBs (e.g. MoveAbsolute, MC_MoveVelocity, L_MC1P_AxisBasicControl) also switch their status outputs (x)Busy, (x)Done etc. on the basis of the uncompensated setpoints.
The compensation has an additive effect on the setpoint and is subtracted from the actual value.
The corrected setpoints are output on the FB for analysis purposes.
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L_CT1P_LeadscrewErrorComp |
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AXIS_REF |
- |
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Axis |
xBusy |
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- |
BOOL |
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BOOL |
- |
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xEnable |
xActive |
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- |
BOOL |
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- |
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eExecutionIndex |
xError |
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- |
BOOL |
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ARRAY[*] OF LREAL |
- |
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alrAxisPosition |
eErrorID |
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- |
L_IE1P_Error |
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ARRAY[*] OF LREAL |
- |
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alrAxisCorrection |
lrSetPosOut |
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- |
LREAL |
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- |
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lrSetVelOut |
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- |
LREAL |
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lrSetAccOut |
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- |
LREAL |
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lrSetTorqueOut |
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- |
LREAL |
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lrActCorrection |
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- |
LREAL |
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Inputs
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Name Data type |
Info/adjustment options |
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|---|---|---|
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Axis AXIS_REF |
Transfer of the axis data structure of the axis to be corrected |
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xEnable BOOL |
FALSE -> TRUE |
Activation of the FB |
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Activation or deactivation (TRUE <-> FALSE) can only take place when the axis is locked ("Disabled" status). |
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eExecutionIndex |
Execution index A maximum of two setpoint-correcting FBs can be connected to one axis. The call sequence is defined via this input. Selection: L_MC1P_ExecutionIndex.First := 1, L_MC1P_ExecutionIndex.Second := 2 |
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alrAxisPosition ARRAY[*] OF LREAL |
Position vector of the AxisRef for determining the position correction |
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alrAxisCorrection ARRAY[*] OF LREAL |
Correction values of the AxisRef at the positions alrAxisPosition The number of values in alrAxisPosition and alrAxisCorrection must be identical |
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Outputs
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Name Data type |
Value/meaning |
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|---|---|---|
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xBusy BOOL |
TRUE |
The FB was added to the AXIS_REF setpoint path. |
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xActive BOOL |
TRUE |
Spindle pitch error compensation is active. |
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xError BOOL |
TRUE |
An error has occurred. For details, see eErrorID . |
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eErrorID |
If xError = TRUE: Error number for the error that has occurred. |
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lrSetPosOut LREAL |
Modified target position This output is used for analysis. It is not necessary to connect the output. |
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lrSetVelOut LREAL |
Modified target speed This output is used for diagnostics. It is not necessary to switch the output. |
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lrSetAccOut LREAL |
Modified target acceleration This output is used for diagnostics. It is not necessary to switch the output. |
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lrSetTorqueOut LREAL |
Modified target torque This output is used for diagnostics. It is not necessary to switch the output. Note: Spindle pitch compensation does not affect the torque. |
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lrActCorrection LREAL |
Current correction value This output is used for diagnostics.It isnot necessary to switch the output. |
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