1 actual value interpolation (principle), Actual value interpolation (principle), 9i/o terminals – Lenze E94AxPExxxx User Manual
Page 328
![background image](/manuals/566084/328/background.png)
9
I/O terminals
9.7
Touch probe detection
328
Lenze · 9400 Servo PLC· Reference manual · DMS 4.0 EN · 11/2013 · TD05/06
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
9.7.1
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.
[9-3]
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