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Transport belts: Difference between revisions

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(Completely overhauled and rewritten for 0.12.20)
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<p>
<span style="float:right; padding-left:10px; padding-right:10px;">
[[File:Transport_belts_demo.gif|300px|top]]&nbsp;&nbsp;&nbsp;[[File:Transport_belts_demo2.gif|300px|top]]
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</p>
'''Transport belts''' are items which are used to transport items from one place to another. There are three types of transport belts, each with their own properties.
'''Transport belts''' are items which are used to transport items from one place to another. There are three types of transport belts, each with their own properties.
<br />
<br />


==Types==
==Types==
[[File:Transport_belts_speed.gif|frame|Demonstration of the different belt speeds]]
 
<p>
<span style="float:right; padding-left:10px; padding-right:10px;">
[[File:Transport_belts_speed.gif|top|300px]]
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{| class="wikitable"
{| class="wikitable"
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&nbsp;*experimental value: See [[Transport_belt_experiments|Transport belt experiments]] for more detailed information.
&nbsp;*experimental value: See [[Transport_belt_experiments|Transport belt experiments]] for more detailed information.
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<br />
<br />


==Basic==
==Placement==
'''Task''': make a steady flow of items from your [[Mining drill]]s to the [[Furnace]]s.
<p>
<span style="float:right; padding-left:10px; padding-right:10px;">
[[File:Transport_belts_notplace.gif|300px|top]]&nbsp;&nbsp;&nbsp;[[File:Transport_belts_doplace.gif|300px|top]]&nbsp;&nbsp;&nbsp;[[File:Transport_belts_replace.gif|300px|top]]
</span>
</p>
* Do not place transport belts by moving the mouse
* Instead just move your character
* You can change the direction of a transport belt by overbuilding it
* You can change the direction of a transport belt by pressing "r" while mousovering it
* You can upgrade a transport belt by overbuilding it with an other type
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<br />
<br />
<br />
<br />
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<br />


* Select a belt by taking a [[Storages/Stack]] from your [[Inventory]]
==Production Layouts==
* Rotate the belt by pressing "R" until it faces the right direction.
{| class="wikitable"
* Place the belt (by default left mouse)
|-
* Move in the direction you want the belt to go, and hold down the left mouse button: the belt continues to be placed.
! scope="col" | Design
 
! scope="col" | Input
===In-place-replacement===
! scope="col" | Output
If you have placed a belt in the wrong direction you don't need to dismantle it.
|-
* Make sure your game-hand is empty and then simply press 'R' over the piece and it will change on the spot.
| [[File:Transport_belt_layout1.jpg|top|400px]] || NA || NA
* This in-place-replacement is also possible with other belt-types. Pick up a faster belt type and place it over the current: The belt is picked up and replaced with that in your hand.
|}
* Many more things can be in-place-replaced: Poles, Chests, Inserters, Assemblies, Furnaces...
 
==Advanced==
* For a more advanced introduction into the belt mechanics see the [[Belt transport system]] page.
* For information about the finer aspects of handling belts try the page on [[Transport belts/Physics|Transport Belt physics]].
 
[[File:transport-belt-two-lines-2.jpg|thumb|256px]]
 
===Turns and bends ===
[[Transport belts/Turns|Turns]] will always keep the alignment of items.


[[File:transport-belt-two-lines-1.jpg|thumb|256px]]
==Belt Management==
===Merging and un-merging===
Belts have [[Transport belts/Belt lane|two lanes]] that can be used for transporting. This allows for either a double flow of one material, or with some careful setup, transporting two different materials on the same belt. Mixed belts can be benificial for smelting ore, or producing items with a lot of ingridients such as te science pack 3.
Un-merging a mixed belt is fairly easy too, since a underground belt will block half of your a belt. So there is no reason to be afraid of mixed belts at all.<br />
[[File:Transport_belts_merge.gif|300px|top]]&nbsp;&nbsp;&nbsp;[[File:Transport_belts_unmerge.gif|300px|top]]


===Belt Lanes: using two sides===
===Balancing the belts===
Belts have [[Transport belts/Belt lane|two lanes]] that can be used for transporting. This allows for either a double flow of one material, or with some careful setup, transporting two different materials on the same belt.
Sometime you will find one side of a belt more empty than the other. In this care rebalancing the belt can be helpfull.<br />
 
[[File:Transport_belts_balance1.gif|300px|top]]&nbsp;&nbsp;&nbsp;[[File:Transport_belts_balance2.gif|300px|top]]
[[File:transport-belt-two-lines-3.jpg|thumb|256px]]


===Speed, Density and Throughput: About finding the bottlenecks===
===Speed, Density and Throughput: About finding the bottlenecks===
This is a mistake often made - even by advanced players. But first we need to introduce some definitions:
Maximising the throughput is importent, since it will keep your belts efficient. Therefor we need to introduce some definitions:


* '''Speed
* '''Speed
: How fast does a belt move. This influences of course the throughput. The speed is easy to calculate: [[Basic transport belt]] is the slowest, the [[Fast transport belt]] is twice as fast as the basic and the [[Express transport belt ]] is 3x the speed of basic.
: How fast does a belt move.
* '''Density
* '''Density
: How tight are the items put on the belts. See [[Transport belts/Optimizing]] for tips, how to keep the density as tight as possible. See [[Transport belts/Physics]] about how dense you can put the items on the belts.
: How tight are the items put on the belts.  
* '''Throughput
* '''Throughput
: This is speed * density. The maximum density on all belts are nearly equal (indeed the density on faster belts is lower, see [[Transport belts/Physics|Transport Belt physics]]).
: This is speed * density. It describes how many items pass by in a given time.
 
This formula
  Throughput = Speed * density
gives you two opportunities to enhance the throughput:
 
* More speed
* more density.
 
More speed is expensive (see [[Transport_belts/Optimizing#Parallel Belts|optimizing with parallel belts]]), so more density is in many cases much easier to obtain. The way is in most cases, to find the bottleneck.
 
The bottleneck can be seen quite easy, if there is a part of a belt, where the items sometimes stop or don't move (or don't move fast) at maximum density and suddenly they come to a point, where this "stop and go" releases itself and they run free and are not so tight on the belt. This is in most cases the exact place, where you need to optimize your belts. It doesn't make sense to optimize much before or after this point, because if you fix it, you will find the next bottleneck anywhere else.
 
===Side inserts (Crossings)===
When belts join together at a t-junction, items are [[Transport belts/Side insert|inserted from the side]] and they stay on the side of the belt they came from.
 
=== Lane Mixer (Mixing both sides of a belt into one) ===
 
Mixing of two lanes into one is depended on the fact, that you cannot really controll, how the mixing with the splitter works:


Without usage of underground belts:
So there are two opportunities to enhance the throughput:
:[[File:XYorwSk.png|300px]]


With usage of underground belts:
* ''More density''
:[[File:Ss+(2015-06-14+at+10.54.34).jpg|300px]]
Sometimes items have little spaces next to each other that aren't big enought for other items to fit in. In this case reordering the items can still increase the density. This can be done by temporarly increasing the belt speed on a single tile or by merging 2 lanes with an inserter.<br />
:[[File:LaneMixer.png|300px]]
[[File:Transport_belts_density.gif|top|300px]]


A third type of mixing is by using the different speeds of the belts. A basic belt as input and put this into an express belt.
* ''More speed''
If your belts already are at max. density you can still upgrade your speed with better belts. But first you have to find the bottleneck.
The bottleneck can be seen quite easy, if there is a part of a belt, where the items sometimes stop or don't move (or don't move fast) at maximum density and suddenly they come to a point, where this "stop and go" releases itself and they run free and are not so tight on the belt. This is in most cases the exact place, where you need to optimize your belts.


    vv
==Moving other Entities: About highways, advanced defences and moving boxes==
    vv
Moving fast can be essential to defend alien attacks in time. Running on a belt will increase or decrease the movement speed of the player accordingly to the belts speed. That is why building a belt towards your defences can be benificial. <br /><br />
    vv <-- this belt needs to be basic belt!
However the player is not the only unit that can be moved by transport belts. Also biters and spitters can be moved. This can be abused to improve your defence. Firstly biters will have a harder time to reach your walls when placing express transport belt infront of them. Secondly spitters can be moved closer to your walls. That way more turrets can attack a single spitter at once. <br /><br />
  >>>>>>>>>>>>  
Another usefull usage are cars on transport belts. Cars have an inventory and can be filled by inserters. So they can be used as moving boxes on belt. This has several advantages: Firstly the throughput of the beltboxed is amazingly high, secondly the inserter stack size bonus does apply here and make inserters more effective.<br /><br />
    ^
[[File:Transport_belts_movement.gif|300px|top]]&nbsp;&nbsp;&nbsp;[[File:Transport_belts_defence.jpg|300px|top]]&nbsp;&nbsp;&nbsp;[[File:Transport_belts_carboxes.gif|400px|top]]
    | This belt needs to be express belt!
 
  All other belts needs to be fast belts!


The result is, that if the output belt is not jammed, then the both input lanes are guaranteed to be mixed 1:1.


==See also==
==See also==

Revision as of 11:39, 18 December 2015

Transport belts demo.gif   Transport belts demo2.gif

Transport belts are items which are used to transport items from one place to another. There are three types of transport belts, each with their own properties.

Types

Transport belts speed.gif

Type Max. throughput (Items per game-second) Speed (Tiles per game-second) Max. density (Items per tile) Required technologies
Basic transport belt 13.393* 1.875* 7.144* none
Fast transport belt 26.786* 3.749* 7.144* Logistics 2
Express transport belt 40.179* 5.624* 7.144* Logistics 3

 *experimental value: See Transport belt experiments for more detailed information.


Placement

Transport belts notplace.gif   Transport belts doplace.gif   Transport belts replace.gif

  • Do not place transport belts by moving the mouse
  • Instead just move your character
  • You can change the direction of a transport belt by overbuilding it
  • You can change the direction of a transport belt by pressing "r" while mousovering it
  • You can upgrade a transport belt by overbuilding it with an other type








Production Layouts

Design Input Output
File:Transport belt layout1.jpg NA NA

Belt Management

Merging and un-merging

Belts have two lanes that can be used for transporting. This allows for either a double flow of one material, or with some careful setup, transporting two different materials on the same belt. Mixed belts can be benificial for smelting ore, or producing items with a lot of ingridients such as te science pack 3. Un-merging a mixed belt is fairly easy too, since a underground belt will block half of your a belt. So there is no reason to be afraid of mixed belts at all.
Transport belts merge.gif   Transport belts unmerge.gif

Balancing the belts

Sometime you will find one side of a belt more empty than the other. In this care rebalancing the belt can be helpfull.
Transport belts balance1.gif   Transport belts balance2.gif

Speed, Density and Throughput: About finding the bottlenecks

Maximising the throughput is importent, since it will keep your belts efficient. Therefor we need to introduce some definitions:

  • Speed
How fast does a belt move.
  • Density
How tight are the items put on the belts.
  • Throughput
This is speed * density. It describes how many items pass by in a given time.

So there are two opportunities to enhance the throughput:

  • More density

Sometimes items have little spaces next to each other that aren't big enought for other items to fit in. In this case reordering the items can still increase the density. This can be done by temporarly increasing the belt speed on a single tile or by merging 2 lanes with an inserter.
Transport belts density.gif

  • More speed

If your belts already are at max. density you can still upgrade your speed with better belts. But first you have to find the bottleneck. The bottleneck can be seen quite easy, if there is a part of a belt, where the items sometimes stop or don't move (or don't move fast) at maximum density and suddenly they come to a point, where this "stop and go" releases itself and they run free and are not so tight on the belt. This is in most cases the exact place, where you need to optimize your belts.

Moving other Entities: About highways, advanced defences and moving boxes

Moving fast can be essential to defend alien attacks in time. Running on a belt will increase or decrease the movement speed of the player accordingly to the belts speed. That is why building a belt towards your defences can be benificial.

However the player is not the only unit that can be moved by transport belts. Also biters and spitters can be moved. This can be abused to improve your defence. Firstly biters will have a harder time to reach your walls when placing express transport belt infront of them. Secondly spitters can be moved closer to your walls. That way more turrets can attack a single spitter at once.

Another usefull usage are cars on transport belts. Cars have an inventory and can be filled by inserters. So they can be used as moving boxes on belt. This has several advantages: Firstly the throughput of the beltboxed is amazingly high, secondly the inserter stack size bonus does apply here and make inserters more effective.

Transport belts movement.gif   Transport belts defence.jpg   Transport belts carboxes.gif


See also

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