Lenze EVS93xx FlyingSaw - Manual (Page 104)

FlyingSaw
Description of the function blocks
Prepared Solution Servo PLC / ECSxA 1.1 EN 10-6
10.4 Function block Master Frequency
This function block prepares the master frequency for the flying saw and during this process
takes into account important factors like the normalisation factor for the flying saw. It is also
possible to filter the input signal and to simulate the master frequency.
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
MasterFrequency_DFIN_nIn_v INT This input is connected to the signal DFIN_nIn_v from the system controller. The master value is
acquired in inc/ms and processed in the function block.
SimulationMasterFrequency_v INT A master value can be simulated with this variable. The master value is also acquired in inc/ms and
processed in the function block. The simulation enables the functions to be tested without receiving a
fixed master value from a master. The entry is made in [inc/ms]
This input makes it possible to switch between the master value simulation and the signal DFIN bSelectInputFrequency BOOL
FALSE The master value from the input
MasterFrequency_DFIN_nIn_v is used
TRUE The master value from the input
dnNormalizationNum DINT Numerator for the normalisation factor. The normalisation factor is calculated in the function block
RatioNormFlyingSaw .
dnNormalizationDen DINT Denominator for the normalisation factor. The normalisation factor is calculated in the function block
RatioNormFlyingSaw .
nFilteringDFIN INT Master value filtering. The filter time is defined in the unit [ms]. Only the output signal
nFrequencyDFINNorm_v is filtered.