Mesa watchdog.timeout_ns

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04 May 2021 12:03 - 04 May 2021 12:05 #207823 by BigJohnT
How does the watchdog.timeout_ns relate to the servo period?

Should it be the same as the servo period?

Thanks
JT
Last edit: 04 May 2021 12:05 by BigJohnT.

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04 May 2021 13:38 #207827 by PCW
Replied by PCW on topic Mesa watchdog.timeout_ns
The timeout needs to be longer than the servo period
If it were set to the same period, 1 usec of jitter could
cause a watchdog bite.

If you consider that the watchdog is mainly for safety,
I think a reasonable number is 10 to 50 ms. That is the time
outputs and stepgens and analog outs would be enabled
after all communication was lost.
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