Lenze EVS93xx CrossCutter - Manual (Page 265)

Cross Cutter
Appendix
 Prepared Solution Servo PLC / ECSxA 1.1 EN 6-97
6.6.7 CalcOffsetForShiftedTP function block
The CalcOffsetForShiftedTP function block uses the cross-cutter application's input variables to
calculate the offset value by which the first print-mark signal will be delayed to ensure that the
first cut is made at a valid print mark. The block also indicates how many print marks will pass
before the first cut is made.
Task information
Can be called in: Cyclic task Time-controlled task
(INTERVAL)
Event-controlled task
(EVENT)
Interrupt task
Variable names
Inputs (Variable type: VAR_INPUT)
Name Data type Value/Meaning
dnMeasuredTPdistance DINT Distance measured from TP sensor to 6 o'clock position on the knife drum. The
value is entered in 0.0001[m_units].
dnCuttingLength DINT Cutting length of the material. The value is entered in 0.0001[m_units].
dnLengthOfStartStopProfile DINT Length of the start/stop motion profile.
dnX1CalcStartStopProfile DINT Position value for the starting point of the pause on the start/stop motion profile in
0.0001[m_units].
dnSyncAngle DINT Cutting angle for which the knife has to run in synchronism with the material (y
sync
,
the value is entered in 0.0001[s_units]).
dnTotalYFeedAngle DINT Y final value of the selected motion profile in 0.0001[s_units].
dnCircumferenceSlave DINT Cutting circle circumference of the knife drum in 0.0001[m_units].
Note: Do not enter the synchronous cutting length here (on knife drums with more
than one knife, this may not be the same as the cutting circle circumference). You
should always enter the entire circumference of the knife's cutting circle.
Change-over of calculation formula in accordance with the type of cross cutter being
used.
TRUE Using the calculation for the asynchronous cross cutter.
bWorkWithAsynchronusCrossCutter BOOL
FALSE Using the calculation for the synchronous cross cutter.