Lenze 9400 Manuale Utente Scaricare il pdf (Pagina 286)

8 I/O terminals

8.7 Touch probe detection

286

Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06

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8.7.1 Actual value interpolation (principle)

If a touch probe is detected, the (remaining) time until the following task cycle is determined and

from this a time stamp is generated. On the basis of this time stamp, the L_SdTouchProbe FB can

then carry out a linear interpolation between the two actual position interpolation points; the

result is the precise actual position at the time of the physical touch probe event.

[8-3] Actual value determination through linear interpolation (principle)

 Actual position point 1

 Actual position point 2

 Residual time (dnTouchProbeTimeLag)

Data

processing

Application

Data

processing

Application

Data

processing

Application

Task cycle

Task cycle Task cycle

t

Position

t

0



t

1

p

1

p

2

Touch probe received

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