Lenze E94A - Manual (Page 408)

5 Function blocks
5.111 L_PosPositionerTable - profile data record management
408
Lenze · 9400 function library · Reference manual · DMS 6.7 EN · 08/2014 · TD05
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Conversion of the values into internal values
The values of the variable tables VTPOS, VTSPEED, VTACC and VTJERK are always entered in the ap-
plication unit [unit].
• Since the SB LS_Positioner needs the profile parameters in the internal measuring system, the
FB L_PosPositionerTable also stores the values of the variable tables in this measuring system.
• The values must only be reconverted by the FB if the machine parameters transmitted by the
drive interface via the input AxisData have changed.
• In this case the output bBusy is set to TRUE during the conversion and an access to the profile
parameters is not possible.
5.111.2 "Teach" function
In addition to the direct value entry via parameters, the values can also be stored in the variable ta-
bles by means of the "teach" function.
The "teaching" of a value can be activated via an FB input or by describing a parameter (e.g. by mas-
ter control):
[5-67] Principle of the "teach" function (here: "teaching" of positions)
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Note!
The values to be "taught" are exceptions. They must be selected in the internal measu-
ring system.
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Note!
If a position, speed, or acceleration are read out of the variable tables (e.g. with the
FBs L_PosGetTablePos , L_PosGetTableSpeed or L_PosGetTableAcc ) and this value is
taught again into the FB, the value displayed may deviate in application units.
The deviation in the display can be explained by the conversion of the value from appli-
cation units into internal units and back again to application units, but has no negative
effect on the drive behaviour.