9.6
Position detection with touch probe (TP)
A "touch probe" (short: "TP") is an event that can be triggered, for instance via a digital input
in an edge-controlled manner to detect and further process an actual value (which is changing
fast) at the triggering time.
•
Typical applications for touch probes:
•
Homing
•
Mark synchronisation
•
Length measurements
•
Up to 2 touch probe channels can be used in parallel.
•
Possible touch probe sources:
•
TP1 : Zero pulse position encoder or digital input DI1
•
TP2 : Zero pulse position encoder or digital input DI2
The digital inputs DI1 and DI2 can be additionally evaluated any time as "nor-
mal" digital inputs via .
9.6.1
Default mapping
The default mapping for a touch probe detection is defined in the following parameters:
Parameter
Designation
Data type
0x1604
RPDO-->axis: touch probe (TP)
RECORD
0x1A04
Axis-->TPDO: touch probe (TP)
RECORD
Data received from the Controller (RPDO)
Parameter
Designation
Data type
0x60B8
Touch probe control word
UNSIGNED_16
Data sent to the Controller (TPDO)
Parameter
Designation
Data type
0x60B9
Touch probe status word
UNSIGNED_16
0x60BA
TP1: actual position - rising edge
INTEGER_32
0x60BB
TP1: actual position - falling edge
INTEGER_32
0x60BC
TP2: actual position - rising edge
INTEGER_32
0x60BD
TP2: actual position - falling edge
INTEGER_32
Configure position control
Position detection with touch probe (TP)
Default mapping
165
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