Beckhoff FC520x Instrukcja Użytkownika Pobierz pdf (Strona 25)

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FC520x / CX1500-x520 24

BECKHOFF FC520x / CX1500-x520

4.2.2.3 GeneralDiag

Cycle-Time

: CycleTime of the DeviceNet-FW

BusLoad

.: DeviceNet Bus Load in %

Failed Cycle Counter

: This counter increments each time when at the beginning of theTwinCAT-Cycle

the last Bus-Cycle was not finished. If the Cycle-Time of the DeviceNet-FW exceeds the CycleTime of the

corresponding highest priority task this counter is incremented.

If the Failed Cycle Counter is incremented permanently after the Network-Start, the following has to be

checked:

- Cycle-time of the corresponding highest priority task should may adapted to the max. Cycle-Time

of the DeviceNet-FW

- Network-Load for the DeviceNet-Master has to be checked. There are may too much DeviceNet

Boxes connected to the DeviceNet Master, which could cause a heavy CycleTime for the De-

viceNet Master FW.

- Check IO-Cycle Times of attached DeviceNet-Boxes. Some of the IO-Cyle Times of the De-

viceNet Boxes are may to fast, which could cause a heavy CycleTime for the DeviceNet Master

FW.

- Check DeviceNet Bus-Load

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