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Momentary Track Contacts vs. Occupancy Sensors.............................................. 92<br />

5 The Visual Dispatcher I ......................................................................................... 96<br />

5.1 Introduction..................................................................................................... 96<br />

5.2 Blocks ............................................................................................................. 100<br />

Blocks on the Layout ........................................................................................... 100<br />

The Main Block Diagram .................................................................................... 102<br />

Links and Routes between Blocks ....................................................................... 105<br />

5.3 Direction of Travel vs. Engine Orientation................................................. 106<br />

Direction of Travel............................................................................................... 106<br />

Engine Orientation ............................................................................................... 107<br />

5.4 States of a Block ............................................................................................ 107<br />

Occupied Block.................................................................................................... 108<br />

Reserved Block .................................................................................................... 108<br />

Current Block....................................................................................................... 108<br />

Display of Train Positions.................................................................................... 110<br />

Locking of Blocks................................................................................................ 110<br />

Locking the exit of Blocks................................................................................... 110<br />

5.5 Train Detection and Train Tracking........................................................... 110<br />

Train Detection .................................................................................................... 111<br />

Train Tracking ..................................................................................................... 114<br />

5.6 Blocks and Indicators ................................................................................... 115<br />

5.7 Stop and Brake Indicators ........................................................................... 117<br />

5.8 Arranging Indicators in a Block.................................................................. 120<br />

Arranging Momentary Track Contacts and Occupancy Sensors in a Block........ 120<br />

One Sensor per Block: Combined Brake/Stop Indicators.................................... 124<br />

5.9 Block Signals.................................................................................................. 125<br />

General................................................................................................................. 125<br />

Signal Aspects...................................................................................................... 126<br />

Colour .................................................................................................................. 126<br />

How to use Signals on the Model Railroad Layout ............................................. 127<br />

How Block Signals Work .................................................................................... 128<br />

Additional Notes .................................................................................................. 129<br />

5.10 Schedules........................................................................................................ 130<br />

Schedule Diagrams .............................................................................................. 130<br />

Start and Destination of a Schedule ..................................................................... 131<br />

End block of a Schedule ...................................................................................... 132<br />

Passage through each Block................................................................................. 134<br />

Alternative Paths.................................................................................................. 134<br />

5.11 Execution of Schedules ................................................................................. 137<br />

Starting a Schedule .............................................................................................. 138<br />

Reservation of Blocks and Routes ....................................................................... 138<br />

Path Selection....................................................................................................... 141<br />

5

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