those interested in some of the technical details about the
layout and its operation, here are some points of interest.
layout utilizes a detection system referred to as Absolute
Position Detection (APD) which detects when a train
is at an exact position on the layout. This is different than
a block detection system where the system only detects that
a train is somewhere in a block.
section describes how the layout functions and is divided
into several parts as follows:
General Operating Environment (below)
Operations Control Centre (AOCC)
concepts and organization
8. Signal System
Rail is a DCC (Digital Command Control)
layout which means that many engines can be run on the same
track at the same time (if extreme care is exercised so that
no two engines occupy exactly the same space at the same time!).
The particular brand of DCC equipment used is Digitrax.
more information about DCC, see TECHNICAL
of the layout operation is done using computer control. The
Digitrax network is interfaced to a Windows PC and software
has been developed to run trains, special effects and other
implementation of a Track Occupancy Status (TOS)
system has proceeded smoothly and integrates nicely with the
earlier Automated Operations Control Centre (AOCC).
Both systems work together to keep track of train locations
and to run multiple trains and special effects automatically.
Over 20,000 lines of computer code are used to do this!
(Java Model Railroad Interface) is used and is an "open
source" (free) system which provides many features to
assist with model railroad operations. Control panels, decoder
programming, and scripting are some of the main components.
readers will be familiar with Panel Pro and Decoder
Pro which are the two main components of JMRI. It is the
scripting language of JMRI that provides most of the facilities
to control and operate the RHJ
Rail layout. Scripts will run under either
of the two main JMRI components. RHJ Rail uses
Panel Pro as its basic JMRI starting point.
scripting language syntax is referred to as Jython
(a Java implementation of the popular computer programming
language, Python). Most, but not all, of the rules
of Python apply to JMRI scripting. In addition, JMRI adds
some critical components to interface with many of the popular
brands of DCC equipment.