Network Topology Reference

Visual conventions for reading network diagrams in Stationeering Systems

Network topology diagrams show logical power distribution and data connections between systems. These simplified representations focus on functional relationships rather than physical layout.

Note: Diagram conventions evolved over time. Earlier documents (Power, Power Capacity Planning) use simpler representations. The robust conventions described below were developed for the ARU system due to its complexity and are used in subsequent documentation.

Reading Network Diagrams

• Hierarchical Flow: Shows power source relationships from generation to consumption

• Color Coding: Represents data network domains (not power flow)

• Mixed Connections: Some devices receive power from one network and send data to another

Power Distribution Elements

Transformers/APCs: Rectangular boxes showing device type and network name

• Standard rectangular outline = Direct power distribution

• Scribbly/hatched outline = Load leveling network (APC ONLY)

• Color indicates data network domain, not power source

Network Cables: Lines connecting components

• Solid lines = Primary connections

• Dashed lines = Redundant/backup connections

• Color follows the data network domain

• Objects are deduplicated to reduce diagram clutter

• Heavy solid lines recommend using high-wattage cables

Connection Points: Different shapes represent different element types

• Lines represent cables

• Boxes represent transformers and power distribution

• Circles represent device consumers

• Diamonds represent logic components

Device Labeling: Elements show device type and functional identifiers

• Single instances: Device type only

• Multiple instances: Device type + unique identifier describing functional purpose

• Example: Two Logic I/O devices on same network distinguished as "Pressure Sensor" and "Failsafe Control"

Backup Systems:

• Orange elements indicate backup power (APCs with batteries)

• Provide failover power when primary sources are unavailable

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This guide covers visual conventions used in network topology diagrams. For engineering terminology, see the Terminology Reference.