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Lenze 8400 - Touch Probe Detection

Lenze 8400
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Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23 357
6 I/O terminals
6.4 Touch probe detection
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6.4 Touch probe detection
This function extension is available from version 06.00.00!
"Touch probe" (TP) in general means quick detection of a position by a quick sensor if the pulse
duration of the sensor signal is too short to be detected by a "normal" digital input (scanning time:
1 ms).
Moreover, touch probe requires exact detection of the position. Here, the difference in position
between the 1 ms position detection and the touch probe signal is considered as correction value.
Applications:
Precise approach of a position at a previously detected signal mark
High-precision traversing of a section starting at a previously detected signal mark
Safe detection of signal marks with very short signal edges
Measurement of a high-precision position at a previously detected signal mark
Homing to touch probe (homing signal)
Relative residual path positioning (traversing of a section starting at signal mark)
Absolute positioning to target position, activated by a safely detected signal mark
Position measurement of a distance between 2 signal marks
Overview of touch probe signal sources
The 8400 HighLine provides the following signal sources for touch probe detection which can be
configured independently:
Signal source Edge sensitivity Applications
Digital input DI3
...
Digital input DI7
Rising edge, falling edge, rising and
falling edge (parameterisable)
Homing
Residual path positioning
Position measurement
Freely interconnectable

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