Table of contents

Simplifying Events and Logic in LCC Fusion

Simplifying Events and Logic in LCC Fusion

How Fusion makes LCC’s event-driven power approachable without hiding how it works.

By this point in the series, the hardware structure of LCC Fusion should feel clear:

hubs eliminate wiring between cards
specialized I/O cards handle specific functions
breakout boards absorb device complexity
auto-discovery removes manual addressing

The final concern many users have is not hardware—it’s logic.

Specifically:

“Isn’t LCC event logic complicated?”

LCC itself is powerful and flexible, but that flexibility can feel intimidating if users are forced to design everything from scratch. Fusion addresses this by reducing the amount of logic users must actively manage, while still remaining fully compliant with LCC standards.

1. Why Raw Event Logic Feels Hard

At its core, LCC is event-based:

producers generate events
consumers react to events
logic emerges from how events are connected

In theory, this is elegant. In practice, many systems expose users directly to:

dozens or hundreds of event IDs
abstract producer/consumer relationships
unclear defaults
manual mapping for every interaction

The result is cognitive overload—especially for users just trying to make a signal change when a block becomes occupied.

Fusion was designed to remove that burden.

2. Fusion Uses Sensible Defaults Everywhere

One of Fusion’s most important design choices is the extensive use of default event IDs.

For most cards:

default producer events are already defined
default consumer events are already assigned
related events follow predictable patterns

This allows many common use cases to work with little or no customization.

For example:

a block detector already produces meaningful “occupied” and “clear” events
an output card already knows how to consume those events

Users often simply copy default events from one card and paste them into another.

No event design required.

3. Logic Is Configured, Not Programmed

Fusion avoids forcing users to “think like programmers.”

Instead of writing logic, users:

select inputs
select conditions
select outcomes

Logic is expressed declaratively through configuration rather than code.

This makes advanced behavior—such as signal logic or turnout interlocking—accessible without requiring firmware changes or scripting.

4. Logic Is Built on Top of Real Hardware Structure

Because Fusion’s hardware architecture is clean and predictable:

logic statements map directly to real cards
inputs and outputs are clearly identified
configuration labels match physical devices

Users are not reasoning about abstract endpoints. They are reasoning about actual layout components.

This dramatically reduces confusion.

5. Incremental Logic Instead of Monolithic Logic

Fusion encourages users to build logic incrementally.

Rather than designing a large, all-encompassing logic table up front, users can:

start with basic functionality
test one interaction at a time
add more rules as needed

Because the system is event-driven, adding new logic does not require rewriting existing logic.

This makes experimentation safe and reversible.

6. Visibility and Transparency Are Preserved

Although Fusion simplifies event usage, it does not hide LCC from the user.

Advanced users can still:

see every event ID
override defaults
design custom logic
integrate third-party LCC devices

Fusion lowers the entry barrier without imposing a ceiling.

7. Logic Scales the Same Way Hardware Scales

As layouts grow:

more blocks produce events
more signals consume events
more logic rules are added

Fusion’s event model scales naturally because:

events are decoupled
hardware is modular
configuration is structured

Small layouts remain simple. Large layouts remain manageable.

8. Why This Matters for Learning LCC

Fusion acts as a bridge between:

“I just want my layout to work” and
“I want full LCC control and flexibility”

Users can:

start with defaults
learn by observing how events interact
gradually take control of more advanced configurations

This makes Fusion an effective learning platform for LCC—not just a control system.

Why This Matters

Simplifying events and logic is what completes Fusion’s goal of making LCC approachable.

It ensures that:

users are not overwhelmed at the start
common tasks require minimal configuration
advanced capabilities remain available
the system grows with the user’s understanding

Fusion does not remove power—it removes unnecessary friction.

← Back to Understanding LCC Fusion