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When I have a long inserter connected to an empty steel chest and the condition set to GREEN * <50, when nothing is in the chest, the inserter status is "disabled by control behavior".
If 1 item is in the chest, it will work correctly until the quantity set is met (50 in this case).
I have other inserter + chest circuits that work fine with yellow and blue inserters, so this appears to be something with just long (red) inserters.
I've included a few screenshots that hopefully convey the experience.

FaustFaust wrote: Fri Oct 25, 2024 5:07 pm When I have a long inserter connected to an empty steel chest and the condition set to GREEN * <50, when nothing is in the chest, the inserter status is "disabled by control behavior".

This is the normal behavior with all the inserters, If the inserter receive no signals, then the condition is false, there is "nothing" < 50, , there is nothing at all, so the inserter doesn't activate.

That's how the green * works.

Here is a demonstration with blue inserter :

I am not seeing anything broken, its just how circuit network works (there are no signals with value of 0) and "anything" defaulting to false if there were no signals given in the condition.

From the "anything" point of view, "anything < 50" cannot be true when there are no signals, because otherwise "anything = 10" would have to be also true when there are no signals but the condition would be saying "true only if there are signals of a value 10". Condition "Anything < 50" effectively requires signals to be present, which means it works as "Anything != 0 AND < 50"

Thanks for the replies. I guess I never noticed this before.

FaustFaust wrote: Fri Oct 25, 2024 6:31 pm Thanks for the replies. I guess I never noticed this before.

It could be because you usually set this up when there is already something in the chest, and thus it keeps working unless the chest happened to be completly emptied.

Or maybe that you were used to select the green * with =< 50 in previous game, and this one you used <, the first one would work even if there is nothing in the chest, and can be used for this purpose.