08-22-2023, 05:11 AM
Thank you for your feedback.
Some of your hints already helped.
But I will ask some more precise questions:
To control locally with buttons is clear. But what does the board do if the Lan connection is gone. Do the relais and states just stay as they are or ist there also a way to shut all relais down ?
What do you mean by use a digital input to turn off all relais (where should the signal come from)? How could that be realized?
My idea could be to built something like a watchdog -> for example send e.g. every 5 seconds a "ping" to the KC868 board. And if this "ping" is not there the board shuts down all relais. Is that possible (maybe also via ethernet) ? Perhaps the same could be done the other way round.
My goal is to have some safety, that all relais go off in an "unplanned" event like connection loss, freezes and so on.
My cycle frequency will be very low, which means I only want to switch every few minutes. My question was about the design life of the relais (e.g. 100k cycles).
Thank you for your support.
Greets Karl
Some of your hints already helped.
But I will ask some more precise questions:
To control locally with buttons is clear. But what does the board do if the Lan connection is gone. Do the relais and states just stay as they are or ist there also a way to shut all relais down ?
What do you mean by use a digital input to turn off all relais (where should the signal come from)? How could that be realized?
My idea could be to built something like a watchdog -> for example send e.g. every 5 seconds a "ping" to the KC868 board. And if this "ping" is not there the board shuts down all relais. Is that possible (maybe also via ethernet) ? Perhaps the same could be done the other way round.
My goal is to have some safety, that all relais go off in an "unplanned" event like connection loss, freezes and so on.
My cycle frequency will be very low, which means I only want to switch every few minutes. My question was about the design life of the relais (e.g. 100k cycles).
Thank you for your support.
Greets Karl