Cycle Time Exceeded Error

Was bedeutet 0x809F ?

The PLC's scan cycle time has exceeded the maximum cycle time (watch cycle time) configured in the PLC Setup. This indicates the program or I/O operations are taking too long to complete within the allowed timeframe. Flag A401.08 indicates this error.

• PLC program is too complex or inefficient, leading to excessive execution time.
• Maximum cycle time setting in PLC Setup is too low.
• High-speed interrupt function is enabled in PLC Setup, affecting Maximum Interrupt Task Processing Time in A440.

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Modify the PLC program to reduce its execution time.

2. 2

   Increase the maximum cycle time setting in the PLC Setup, reviewing the Maximum Interrupt Task Processing Time in A440.

3. 3

   Divide unused parts of the program into tasks to reduce the main cycle load.

4. 4

   Implement jumps to bypass unused instructions within tasks.

5. 5

   Disable cyclic refreshing for Special I/O Units that do not require frequent updates.