User guide

5 Function blocks
5.127 L_SdInterExtrapolatePosition - signal interpolation
474
Lenze · 9400 function library · Reference manual · DMS 6.7 EN · 08/2014 · TD05
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5.127 L_SdInterExtrapolatePosition - signal interpolation
This FB serves to interpolate or extrapolate position information with a greater resolution than the
task cycle. Furthermore, the FB provides measures for filling in the gaps in the case of telegram fai-
lures.
•The L_SdInterExtrapolateAny
FB serves to interpolate or extrapolate other data types. ( 471)
Inputs
Function library: LenzeServoDrive FB available from library V02.09.xx.xx!
Runtime software licence:  Motion Control HighLevel  Motion Control TopLevel
Identifier/data type Information/possible settings
dnPosIn_p
DINT
Input position (setpoint) in [increments]
bProcessDataExpected
BOOL
SyncInput interface for telegram failure detection
• This input is only evaluated if C04435 = "2".
• If this input is set to TRUE (e.g. via the LS_SyncInput SB), the FB expects a new po-
sition value at the dnPosIn_p input at that time.
FALSE A new process datum at dnPosIn_p is not expected.
TRUE A new process datum at dnPosIn_p is expected.
bProcessDataInvalid
BOOL
SyncInput interface for telegram failure detection
• This input is only evaluated if C04435 = "2".
• The signal is only valid in conjunction with bProcessDataExpected.
• If this input is set to TRUE (e.g. via the LS_SyncInput SB), the FB invalidates the
new position value at the dnPosIn_p input.
FALSE The process datum at dnPosIn_p is valid.
TRUE The process datum at dnPosIn_p is invalid.
dnToggle
DINT
Toggle input for telegram failure detection
• This input is only evaluated if C04435 = "1".
• The input is supposed to receive a 32-bit value which had been received from the
master control and which changes with every communication cycle. If the
dnToggle input value remains unchanged, this behaviour will be evaluated as te-
legram failure.
AxisData Machine parameters
• For accepting the machine parameters of the drive/motor, connect this input
with the output DI_AxisData of the SB LS_DriveInterface.
• The machine parameters of a master drive can be displayed with the
FB L_SdSetAxisData
. In this case, the FB output AxisData must be connected to
this input. ( 510)
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