Train automation blueprint book. Contains the following. Multi request controller, you connect 1 of these to a buffer. Just add desider combinator that desides when the buffer is low ( red signal ). Train manager, just plop it down, add train stations when needed, can be configured to handle on certain items. Smart station, link these to the train manager. Smart station, able to link with the system and report availability of items, if the items isnt available the request controller will not ask for it. Smart unloading, able to link with request controller, only unloads items when active request is there. 2 reset controllers, add them to the belt or fluid buffer. Train timer, you need 1 of these in the system. Disable the constant combinators that have simulation in them or enable them if you dont want to use that feature.
System allows for multiple items to be handled by 1 train station. How big you want your buffers is up to you, how many request you want to send and when is up to you, send the red signal and the manager will send the requests. Link up more if you want request ( for example 75%, 50%, 25% ) All display panelts with i in them are information only, they give information how to connect. Most controllers have codes if they need to be connected to something. It works with interrupts, when you request iron ore the signal iron ore ( number of trainstation ) is send to the trains. Just need to make 1 interrupt for each station which triggers on all goods going to the station with their number. And the station as output.