Lenze EVS93xx FlyingSaw - Manual (Page 106)

FlyingSaw
Description of the function blocks
Prepared Solution Servo PLC / ECSxA 1.1 EN 10-8
10.5 Function block LengthCalculation
Based on the length entered, the block LengthCalculation calculates the start signals for the
synchronisation to the master speed.
Task information
Can be called in: Cyclic task Time-controlled task
(INTERVAL)
Event-controlled task
(EVENT)
Interrupt task
Inputs (Variable type: VAR_INPUT)
Identifier Data type Value/meaning
bStartLengthCalculation BOOL Start the length calculator
TRUE Start the length calculator
FALSE Stop the length calculator. The length
calculator is initialised with zero internally.
dnCutInputInc DINT Input for specifying the set length. The set length is defined in increments.
dnOffset DINT Input for the offset.
The offset is calculated in the function block OffsetCalculation and must be connected to
this input.
n_In_v INT
Master frequency specified in the unit [inc/ms].
The master frequency is calculated using the normalisation factor and must be connected to
the output of the function block MasterFrequency.
dnCutterCompensation DINT Input for width of cut compensation.
The width of cut is defined in the application unit [unit].
DFIN_bTPReceived BOOL Input for the DFIN touch probe.
The variable is to be connected to the input DFIN_bTPReceived_b on the SB DFIN
dnActualPosOfAxis DINT Input for the actual position of the flying saw. If a top cut is performed away from the initial
position, this position is added to the calculation and taken into account on the next cut.
wTaskInterval WORD
Task interval. This variable must be linked to System_Flag SYSTEM_wTaskInterval
Axis MC_AXIS_REF Machine parameters
¾ Data structure with elements that contain the machine parameters in the
internal measuring system.
¾ Connect this input to a global variable written by the FB L_MCMachineData