Watchdog

Watchdog 1:
Setting the watchdog via the CoE directory

The watchdog can be set via the indices 0x80n0:05, 0x80n0:13 and 0x80n0:14 (Ch1: n=0; Ch2: n=1) in the CoE Online directory. The following parameters can be set:

  • Default watchdog value (Index 0x8000:05)
    • In the case of an interruption in communication, a watchdog switches the outputs off after 100 ms (default). The watchdog time can be changed outside the CoE directory via the Advanced Settings on the "EtherCAT" tab (System Manager).
    • In addition, an output value can be defined in Index 0x8000:13 (Ch1) or 0x8010:13 (Ch2) respectively, which is switched to the outputs.
  • Watchdog ramp (Index 0x8000:05)
    • A ramp (index 0x8000:14 or 0x8010:14) is parameterizable in the watchdog: if the watchdog is triggered, the outputs are not immediately moved to the target value from 0x80n0:13; instead, the values are changed linearly from the current output value [digit/ms] up to the target value from Index 0x80n0:13. This is then retained.
  • Last output value (Index 0x8000:05)
    • The last valid output value after the occurrence of an error is output.
Note
Watchdog parameterization can trigger unintended actions!

Please refer to section "Notes for setting the watchdog".