Lenze 8400 - Manual (Page 334)

6 I/O terminals
6.3 Touch probe detection
334
Lenze · 8400 protec HighLine · Reference manual · DMS 3.0 EN · 03/2013 · TD05
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Short overview of the relevant parameters:
Edge selection
Select which edge the corresponding input is to respond to.
• In the case of signal sources DI4 ... DI5, the edge sensitivity can also be dynamically changed via
inputs at the LS_TouchProbe SB.
Sensor delay
This setting serves to compensate for a sensor delay of the touch probe sensor, if any.
• Typical values for laser photoelectric barriers are e.g. 300 μs.
• Delay of the digital inputs for the 8400 device series:
• 5 μs for a rising edge
• 25 μs for a falling edge
• Internal automatic compensation for device-internal signal delay due to encoder zero pulse.
Pos Offset
Use this setting to add an offset to the position value measured by touch probe. This may be
required if the touch probe sensor has assumed a disadvantageous position on the machine. By
adding an offset the touch probe sensor can be moved to a position which is more convenient to the
application.
The offset value given in [units] is added to the TP position value which depends on the position
source selected in C02815/x . The offset value influences the display of the TP position ( C02817/x ),
home position values internally derived from the touch probe and the respective output
dnTpDigInX_Position_p at the SB LS_TouchProbe . For this purpose, the offset value is converted
internally from [units] to [increments].
Parameter Info Lenze setting
Value Unit
C02810/4...6 TPDigIn4 ... TPDigIn6: Edge selection 0: Off
C02811/4...6 TPDigIn4 ... TPDigIn6: Sensor delay 0 μs
C02812/4...6 TPDigIn4 ... TPDigIn6: Pos offset 0.0000 units
C02813/2...3 TPDigIn4 ... TPDigIn5: Window start 0.0000 units
C02814/2...3 TPDigIn4 ... TPDigIn5: Window end 0.0000 units
C02815/4...6 TPDigIn4 ... TPDigIn6: Position source 0: Position encoder actual value
C02816/4...6 TPDigIn4 ... TPDigIn6: Signal counter -
C02817/4...6 TPDigIn4 ... TPDigIn6: TP position - units
Highlighted in grey = display parameter
Position
t
Offset
C02817/x
C02812/x
LS_TouchProbe.dnTPDigInX_Position_p
LS_MotorInterface.dnMotorPosAct_p
TP position
TP signal