The request station has been updated in this version 3. It makes sure there is room in each group of 6 chests to unload a full load from the wagon that stops there. If not, the station gets closed and it does not send any request signal either. This check is disabled when tanks are used (U=2).
In constant combinators specify:
- U: U=1 means chests are used, while U=2 means tanks are used.
- Chest Size (1600 for iron chests storing iron ore)
- Number of wagons (e.g. 4, see picture)
- Load in each wagon (e.g. 2K iron ore)
- Max Storage: Station total storage (e.g. 38400 iron ore)
Read more details in Version 2 preceding v3.