User guide

Lenze · 9400 function library · Reference manual · DMS 6.7 EN · 08/2014 · TD05 181
5 Function blocks
5.10 L_CamStretchFeed - stretching/compressing the position (relative)
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Outputs
bZero
BOOL
Accept changed stretch factor
• Apply an acceptance signal to this input, which for instance signalises the zero
crossing of the x axis (synchronised stretching/compression).
TRUE The changed stretch factor is immediately accepted internally.
dnNumerator
DINT
Stretch factor (numerator)
•±2
31
-1
dnDenominator
DINT
Stretch factor (denominator)
• 1 ... 2
31
-1
• A negative stretch factor can only be defined via dnNumerator.
• In the case of an input value < 1, processing is continued internally with 1.
bLoadStartPos
BOOL
Load the integrator with starting position
TRUE Load the integrator with the value at the dnStartPos_p input.
dnStartPos_p
DINT
Starting position in [inc] with which the integrator is loaded by setting
bLoadStartPos to TRUE.
• C05451 indicates the starting position in the real unit of the machine.
AxisData Machine parameters
• If the FB is to relate to the measuring system of the drive axis, connect this input
to the output DI_AxisData of the LS_DriveInterface SB for accepting the machine
parameters of the drive/motor.
• If the FB within a cam application is to relate to the measuring system of the mas-
ter selection (master), connect this input to the output XAxisData of
the L_CamProfiler
FB instead. ( 162)
Identifier/data type Value/meaning
dnPosOut_p
DINT
Output position in [increments]
• C05455 indicates the output position in the real unit of the machine.
dnSpeedOut_s
DINT
Output speed given as speed in [rpm]
• C05456 indicates the output speed in the real unit of the machine.
dnAccOut_x
DINT
Acceleration feedforward value
• Output as speed change/time in [rpm/s]
• Display parameter: C05457
dnStretchedPos_p
DINT
Output of the stretched/compressed input position
• For example for position comparators.
• The position is calculated from the stretch factors valid within the cycle multipli-
ed with the input position, i. e. relating to the stretch factors at the input side, the
output can only change in the next cycle. The loading of a starting position has no
effect on the output.
• C05458/1 indicates the stretched/compressed position in the real unit of the ma-
chine.
bError
BOOL
"Error" status
TRUE An error has occurred (group signal).
• For details see display parameters C05459.
Identifier/data type Information/possible settings