Originally shared on the public FactorioPrints / Factorio School archive (factorioprints.com · factorio.school). Authorship preserved from the public catalog.
Complete setup for cargo rocket silo
Items on the belt are blacklisted from logistic network requests
belt "remembers" type of item which was/is on the belt
master switch disables requests if the new rocket is being built, this also prevents loading of previous requests, because rocket is in transit
automatically packs surplus sections and unpacks them when needed
requests come as negative numbers on the red wire trough receiver
Know issues and limitations
does not and cannot support sushi belts
one type of item per belt is expected
if two belts have same type of item, blacklisting will break for that item
Other uses
can be used to load a train if K2 loaders are replaced with inserters and circuits are rewired to read train content and detect when it is in station.