User guide

Lenze · 9400 function library · Reference manual · DMS 6.7 EN · 08/2014 · TD05 327
5 Function blocks
5.91 L_LdMarkSync - mark synchronisation
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5.91 L_LdMarkSync - mark synchronisation
When mark synchronisation is performed, this FB calculates the position at which a mark signal
(touch probe signal) occurred. Furthermore, the remaining distance to the setpoint position of the
mark is observed and output.
• High-precision detection of the actual TP position for which a mark signal occurred.
• Application only in conjunction with modulo measuring systems.
• Comparison with a TP setpoint position at which the mark ideally occurs.
• Calculation of the TP deviation (= deviation between the actual TP position and the TP setpoint
position).
• Feedback of the correcting signal and monitoring of the outstanding TP deviation.
• Distance measurement between two mark signals.
Inputs
Function library: LenzeLineDrive
Runtime software licence:  Motion Control HighLevel  Motion Control TopLevel
 Note!
The generation of the correcting motion is not part of the L_LdMarkSync FB. For this pur-
pose, use e.g. the L_LdPosCtrlLin
FB (time-controlled correction) or the L_CamSyncIn FB
(path-controlled correction).
Identifier/data type Information/possible settings
bEnable
BOOL
Activate FB
FALSE FB is deactivated: Touch probe signals are not evaluated. A value of
"0" is output at the dnActDifference_p, dnTpDifference_p,
dnTpTpDistance_p and dnTpPos_p outputs.
The value at the dnPosOffset_p output remains unchanged.
TRUE FB is activated: After a touch probe signal has occurred, the outputs
display the described quantities. The monitoring of the remaining TP
deviation (the dnActDifference_p output signal) is switched on.
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