Robotic network: Difference between revisions

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#REDIRECT[[Logistic network]]
 
The '''robotic network''' was introduced with v0.8.0, which also added [[repair pack]]s and [[construction robot]]s. [[Roboport]]s are the base of the robotic network. [[Robots]] can fly inside this network to every point covered by the roboports. Roboports are expensive both to craft, and to power.
 
==Items==
 
{| class="wikitable"
!colspan="2"|After researching {{icontech|Logistic robotics (research)}} [[Logistic robotics (research)|Logistic robotics]]:
|-
| {{Imagelink|Logistic robot}} || Moves items between robotic network storage chests, or to/from the player with proper research.
|-
!colspan="2"|After researching {{icontech|Construction robotics (research)}} [[Construction robotics (research)|Construction robotics]]:
|-
| {{Imagelink|Construction robot}} || Repairs broken or replaces destroyed entities. Builds, replaces, and removes entities on command.
|-
!colspan="2"|After researching {{icontech|Logistic robotics (research)}} [[Logistic robotics (research)|Logistic robotics]] or {{icontech|Construction robotics (research)}} [[Construction robotics (research)|Construction robotics]]:
|-
| {{imagelink|Roboport}} || Spawns the robotic network. Holds and recharges robots and provides the coverage for logistics and construction
|-
| {{Imagelink|Storage chest}} || Makes items available in the robotic network. Provides storage to the items collected by the robotic network.
|-
| {{Imagelink|Passive provider chest}} || Makes items available in the robotic network. Unlike the Storage Chest, doesn't accept random items from the robotic network.
|-
!colspan="2"|After researching {{icontech|Logistic system (research)}} [[Logistic system (research)|Logistic system]]:
|-
| {{Imagelink|Requester chest}} || Can be configured to request items from the robotic network storage. Like the Passive Provider Chest, doesn't accept random items from the robotic network.
|-
| {{Imagelink|Active provider chest}} || Available logistic robots remove items from this chest as soon as possible.
|-
| {{Imagelink|Buffer chest}} || Functions as both a [[requester chest]] and [[passive provider chest]].
|}
 
==Robots==
 
Robots perform any required functions within their coverage area. They need power to keep flying at normal speed. When they have nothing to do, they fly to the nearest roboport to sleep and recharge. There are two types of robots that interface with the robotic network, [[Construction robot]]s, and [[Logistic robot]]s.
 
== Damage Repair ==
 
All broken entities will be repaired with [[Repair pack]]s by the [[Construction robot]]s. Destroyed entities will be replaced, if they are available in the same logistic network.
 
==Number of bots in a robotic network==
The number of robots per network is soft-limited because roboports have limited space to charge flying robots. So the number of bots in a network depends on:
* the number of roboports
* the average distance between the roboports (density)
* the form of the robotic network/placement of the ports
* average distance the logistic bots fly between Logistic Chests
* how much damage the [[Construction robot]]s must repair and how often they need to place or remove buildings
And in general:
* number of bots flying
* number of bots stored in roboports
As a rule of thumb between 50-100 bots per [[Roboport]] is possible.
 
==Optimizing a robotic network==
The transportation-power of the logistic bots is nearly constant! It depends on
* [[Worker robot speed (research)|Speed of the bots]]
* [[Worker robot cargo size (research)|Cargo-stacksize]] (number of items they can take at once)
* Number of bots
* Average distance between your chests (all combinations)
* How often they fly empty (the more "random" the transport is the better, because then there is a bigger chance that an empty robot is near!)
* How long they need to wait for recharge - this effect is "blocking", which means that up to an unknown maximum, the transport-power is constant. But, if the waiting queue gets too long, the system falls apart, which means that, counter-intuitively, a slightly lower number of bots is actually more efficient/faster!
 
To optimize it, one can
* Research speed or cargo-stacksize.
* Add more bots to your network
* Add more roboports at strategic points
: This is an expensive enhancement and sometimes doesn't help, but can solve the problem
* Decrease the average distance between the logistic chests
* avoid transporting a lot of raw material - instead use transport belts for items with a lot of throughput. Bring the big material flows as near to the target as possible. The transport-power of logistic bots is much bigger than belts, but a constant flow reduces their effectiveness by about half, because  they fly empty about half the time.
* Split a big network in two and move items between them with transport belts or trains (and requester/provider-chests).
 
===Example===
It's a very good idea to use a robotic network at a train station to unload the chests that have been filled by the inserters from the wagons. The logistic bots have enough time to recharge between trains. But don't also use them to transport the ore to the furnaces. For that the belts are much more useful, because the furnaces have a constant need for raw material and for constant flow belts are much more useful. This shows the flow:
Wagon ---Inserter---> Provider chest ---Logistic bot---> Storage- or Requester-chest
Requester-Chest ---Inserter---> Belt ---> to the furnaces
 
==Choosing the post for charging==
Normally a robot flies to the nearest roboport to recharge. If the queue on that roboport is too long, they eventually choose another port. This is specified by the ratio of <distance to different roboport in tiles> / <queue size of robots waiting>.
 
Currently, to choose the more distant roboport, the distance must be at most <Number of robots in the queue and on the way> / 2.
 
So, to choose a roboport that is 10 tiles more distant, it has to have 20 less robots waiting in the queue.
 
== See also ==
* [[Robots]]
* [[Logistic network]]

Latest revision as of 15:16, 16 July 2019

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