Request from space platform

[mr_alpha]

I'm not sure how to do it,
But i don't want to drop everything from the space platform in orbit when ever it meets a planet.

How can we set a request on the planet to say request 3k empty barrels from the space platform in orbit?

[Fel]

You set the requests in the cargo landing pad.

[Rasjel]

you can request it on the landing pad.
the station only drobs what the station requests.
exept you manualy drob thinks down.

[mrxak]

You can set your requests directly on the landing pad as the other two people have said, but if you really want to get fancy, you can set these dynamically with circuits. Every planet I'm on has a roboport near the landing pad providing combinators with information on what is already in my local logistics network. I use this information with a bit of math to set how much of a given item I want in my network. I just have to set how much I want always to be available to me on that planet with a constant combinator hooked in. If I don't have enough, it sets a request on my landing pad for enough of those items, so platforms arriving in orbit will automatically drop down enough.

For a really advanced set-up, the new selector combinator can help you to request full rockets only, so that your platform won't just send down a handful of items, then go to wherever it is requesting new items and pull up a full rocket, and overflow its cargo. By using the selector combinator, I also make sure I'm getting a comfortable margin above my minimum request, so the platform doesn't stay stuck in orbit dropping down a few at a time as I'm using whatever it is. To use empty barrels as an example, if I wanted to have 3000 locally, always, I'd receive some multiple of 200 down from orbit, to get me 3000-3199 barrels, and then the platform would immediately move on to go pick up more in multiples of 200.

[mike42_de]

Originally posted by mr_alpha:

I'm not sure how to do it,
But i don't want to drop everything from the space platform in orbit when ever it meets a planet.

How can we set a request on the planet to say request 3k empty barrels from the space platform in orbit?

I think you connected the roboport directly to the space platform. Then the space platform gets the request to drop everything which is currently already in the logistic network.

As mrxak mentioned you have to use combinators.
When I started the game I made a pair of decider combinator and arithmetic combinator for each resource I wanted the space platforms to drop. However that is a lot of work if you want to change something , you have to look through each combinator which is chaotic.
So I chose the method which Nilaus uses in his youtube videos.
You place a constant combinator, where you chose the items you want. Therefore the same presets can be used as for space platforms. After you have entered the number you want the landing pad to get in the constant combinator you wire it to a decider combinator. The input of the decider combinator is also connected to an arithmetic combinator which is fed by the roboport and multiplies everything currently available on the planet with -1.
With this method you can use the yellow "each" symbol and have a small setup that subtracts the available goods from the goods you want to be on the planet and sends this request to the space platforms.