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usage:nodes:tcb

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usage:nodes:tcb [2019-12-13 06:30]
blockhead created 		usage:nodes:tcb [2023-12-12 01:35] (current)
blockhead image captions; notes on removing; note on diamond crossings
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 {{:usage:nodes:tcb-isometric.png?nolink&50 |}} {{:usage:nodes:tcb-isometric.png?nolink&50 |}}
  
-The **Track Circuit Break** (**TCB** for short) is a key item in the [[:interlocking]] system. It is analogous to real railway interlocking equipment, where track circuits are used to detect the presence of trains in a block.+The **Track Circuit Break** (**TCB** for short) is a key item in the [[usage:interlocking:start]] system. It is analogous to real railway interlocking equipment, where track circuits are used to detect the presence of trains in a block.
  
 ===== Track Assignment ===== ===== Track Assignment =====
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 Once you have assigned a TCB, you can right-click and open its formspec. From there you can create interlocked sections on either side. Once you have assigned a TCB, you can right-click and open its formspec. From there you can create interlocked sections on either side.
  
-{{:usage:nodes:tcb-empty-formspec.png?400|}}+{{:usage:nodes:tcb-empty-formspec.png?400|The Track Circuit Break configuration GUI with no sections assigned, which is labelled as "Track Circuit Break Configuration" and below has a label "Side A: End of interlocking" with a button below labelled "Create Interlocked Track Section", a gap, then a button labelled "Assign a signal", and similarly below that there is a Side B with label, button to create interlocked signals and button to assign a signal.}}
  
 When you open a TCB, a doodad appears in the game world that indicates which side is which on the TCB. A red A indicates side A and a green B indicates side B, with a white and magenta stripe in between them. When you look directly at this doodad, hover text appears in the minetest UI which tells you the name of the section that applies to either side. When you open a TCB, a doodad appears in the game world that indicates which side is which on the TCB. A red A indicates side A and a green B indicates side B, with a white and magenta stripe in between them. When you look directly at this doodad, hover text appears in the minetest UI which tells you the name of the section that applies to either side.
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 Once a section is created, you can assign a signal to a track section. You should place signals so they face the section that they will allow trains to enter (the section to which they will be assigned). Once a section is created, you can assign a signal to a track section. You should place signals so they face the section that they will allow trains to enter (the section to which they will be assigned).
  
-{{:usage:nodes:signal-lamp-assign.png}}+{{:usage:nodes:signal-lamp-assign.png|Screenshot of a straight track section with a TCB on the left and a signal on the right. The TCB doodad is showing. There is a label left of the TCB that says "Assign signal to this side of the TCB (here: Side B)" and an arrow points left above that label. There is a label right of the signal that says "Signal lamps in this direction" and an arrow points right above that label.}}
  
 ===== Formspec Options ===== ===== Formspec Options =====
-This is what a formspec looks like on a TCB with a signal assigned to one side and a track section without a signal on the other side.+This is what a formspec looks like on a TCB with a signal assigned to one side (side A) and a track section without a signal on the other side.
  
-{{:usage:nodes:assigned-tcb-formspec.png}}+{{:usage:nodes:assigned-tcb-formspec.png|The Track Circuit Break configuration GUI with one section assigned. On the button set for section A, in addition to the Show track section and Signalling buttons, in between those buttons are two new buttons: one on the left labelled "Update near TCBs" and the other on the right labelled "Remove from section". The Section B area is unaffected as it has nothing assigned.}}
  
 ===== Show track section ===== ===== Show track section =====
 This button will open another formspec that shows information about sections. The section formspec lets you edit the section name. It is recommended to set meaningful section names instead of the generated numbers that advtrains produces. This button will open another formspec that shows information about sections. The section formspec lets you edit the section name. It is recommended to set meaningful section names instead of the generated numbers that advtrains produces.
  
-{{:usage:nodes:section-formspec.png |}}+{{:usage:nodes:section-formspec.png|The Track Section GUI, which is labelled "Track Section Detail - 927119. Use the 'Join' button to designate rail crosses and link not listed far-away TCBs. Below that there is a text field labelled "Section name" with the text "West Junction" in it and a "Set" button to the right. Below that there is a list of TCBs in the format "(x, y, z) / Side", the first of which is "(-95,8,-300) / B". To the right of that are two buttons "Join into other section" and "Dissolve Section". Below the list of TCBs is a label that says "No trains on this section." and to the right of that is a button labelled "Reset section state"}}
  
 The section formspec shows all of the TCBs in the section at their coordinates along with which side of the TCB is assigned to the section. In case you are debugging your interlocking setup you may wish to visit each of these locations and check that they are TCBs that correctly belong in that section and are on the appropriate side. The section formspec shows all of the TCBs in the section at their coordinates along with which side of the TCB is assigned to the section. In case you are debugging your interlocking setup you may wish to visit each of these locations and check that they are TCBs that correctly belong in that section and are on the appropriate side.
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 The //Join into other section// button allows you to join any two sections. This is most useful for rail crosses. To join sections, press the join button on one section, then go to the TCB with the other section, open its section and press the join button there. The //Join into other section// button allows you to join any two sections. This is most useful for rail crosses. To join sections, press the join button on one section, then go to the TCB with the other section, open its section and press the join button there.
  
-{{:usage:nodes:railcross-interlocked.png}}+{{:usage:nodes:railcross-interlocked.png| A picture of two tracks crossing at 90°, with four TCBs, each 3 nodes away from the centre where the tracks cross. The TCBs all have their doodads showing. The tracks are not connected with a diamond crossing but just use ordinary straight tracks.}}
  
 This rail cross can be made into one section by opening one of the sections, starting the join and then finishing it on another section: This rail cross can be made into one section by opening one of the sections, starting the join and then finishing it on another section:
  
-{{:usage:nodes:join-options.png?direct |}}+{{:usage:nodes:join-options.png?direct|A cropped screenshot of the Track Section Detail GUI with the button normally labelled "Join into other section" now instead labelled "Join with Middle Station North", which is the name of the section that was chosen with the "Join into other section" button earlier.}}
  
-Finally, you can dissolve sections from this formspec. This may be helpful to do in the event that your section becomes invalid, especially since it is often easier than visiting each of the TCBs in the section to remove the inappropriate ones.+(Please note that it is not necessary to use this method if you are using diamond crossing nodes, since all track connections are explored when making a section, even ones that a train can't travel along. The example was created before those were added to Advtrains, when tracks couldn't intersect like they can with diamonds and the only way to make them cross without using turnouts was clever placement.) 
 + 
 +Finally, you can dissolve sections from this formspec. This may be helpful to do in the event that your section becomes invalid, especially since it is often easier than visiting each of the TCBs in the section to remove the inappropriate ones. It is also helpful when dismantling tracks.
  
 ===== Update near TCBs ===== ===== Update near TCBs =====
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 ===== Signalling ===== ===== Signalling =====
-A signal that is assigned to a section on a TCB will have all of its routes start at that section on that TCB. For information on signalling, see {{:interlocking:signalling}}+A signal that is assigned to a section on a TCB will have all of its routes start at that section on that TCB. For information on signalling, see [[:interlocking:signalling|this detailed wiki page]]. 
 + 
 +===== Removing TCBs ===== 
 +TCBs cannot be removed so long as they are assigned to any track sections. You must remove them from all sections before they can be picked up. Generally you want to remove all trains from the area in case of collision, then remove the TCB from both sections with the TCB GUI. 
 + 
 +If you are dismantling whole sections of track, the easiest thing to do is to start by dissolving sections, to reduce the amount of clicks compared to removing every TCB from every section manually.
usage/nodes/tcb.1576218647.txt.gz · Last modified: 2019-12-13 06:30 by blockhead

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