User guide

Lenze · 9400 function library · Reference manual · DMS 6.7 EN · 08/2014 · TD05 419
5 Function blocks
5.112 L_PosProfileInterface - profile data interface
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5.112.3 Touch probe positioning
With touch probe positioning, the profile is first processed according to the set profile parameters.
If a touch probe is detected during profile processing, the profile automatically changes to the "se-
quence profile with TP", which has been defined via the NextTPProfileData input.
• If no touch probe is detected, positioning is continued with the sequence profile which has been
defined via the NextProfileData input (profile linkage).
• In order to define the sequence profiles, both inputs NextTPProfileData and NextProfileData can
be connected, for instance, with the ProfileData output of another instance of the
FB L_PosProfileInterface.
5.112.4 Touch probe configuration
The touch probe channel to be used for positioning with touch probe detection is selected bit-coded
via the dwTPConfig input. The following table contains all possible configurations with the corres-
ponding decimal values:
• Example: For the selection of the touch probe channel "DIGIN 8" and the response to only one
positive edge, the decimal value "16384" must be set at the dwTPConfig input.
 Note!
If a profile is travelled with high speed and touch probe positioning is started, the resi-
dual path of which is smaller than the result from current speed and set deceleration
ramp, the target position is "overtravelled".
• Normally a reversing movement occurs, i.e. the drive returns.
• If, for instance, a CCW rotation of the drive is forbidden by the safety module, the tar-
get cannot be approached since in this case the reversing movement is not permissib-
le.
Further constellations are possible in connection with profile chaining in which an ap-
proach of the target position is impossible.
Selection
Touch probe channel
Touch probe response
Positive edge Negative edge Both edges
DIGIN 1 1 2 3
DIGIN 2 4 8 12
DIGIN 3 16 32 48
DIGIN 4 64 128 192
DIGIN 5 256 512 768
DIGIN 6 1024 2048 3072
DIGIN 7 4096 8192 12288
DIGIN 8 16384 32768 49152
Motor encoder zero pulse 65536
Load encoder zero pulse 262144
DFIN zero pulse 1048576
DFOUT zero pulse 4194304