Lenze EtherCAT control technology Manual do Utilizador Página 128

  • Descarregar
  • Adicionar aos meus manuais
  • Imprimir
  • Página
    / 204
  • Índice
  • MARCADORES
  • Avaliado. / 5. Com base em avaliações de clientes
Vista de página 127
Control technology | EtherCAT communication manual
Defining the minimum cycle time of the PLC project
Calculating the minimum cycle time
128 L DMS 3.1 EN 01/2011 TD17
10.3 Calculating the minimum cycle time
The minimum cycle time T
min
for a system results from the sum of the times detected
before, multiplied by the safety factor:
T
min
> Safety factor * ( T
Task utilisation
+ T
Correction
)
Example
Note!
The safety factor 1.5 is included in the calculation.
Configuration: System with Intel Celeron 1 GHz processor and six motion axes
Detected access time Result
Calculated correction value T
Correction
160 μs (= 130 μs + 6 * 5 μs
Value read from task configuration: T
Task utilisation
500 μs
Actual required computing time 660 μs
Minimum cycle time including the safety factor 1.5 T
min
990 μs
Actual cycle time 1000 μs
Vista de página 127
1 2 ... 123 124 125 126 127 128 129 130 131 132 133 ... 203 204

Comentários a estes Manuais

Sem comentários