ConnectionRole

An enum that specifies the direction or purpose of flow through a connector.

Enum Values

From Assembly-CSharp.dll, lines 293230-293238:

public enum ConnectionRole
{
    None,
    Input,
    Input2,
    Output,
    Output2,
    Waste
}

Value reference:

Member	Value	Semantics
None	0	No directional role (generic connector)
Input	1	Primary input flow
Input2	2	Secondary input flow
Output	3	Primary output flow
Output2	4	Secondary output flow
Waste	5	Waste/discharge output

Semantics

None: Generic connector with no enforced direction. Used for symmetric operations (e.g., a pipe cross-connector, or a balanced atmospheric pipe).

Input / Input2: Ingress points for gas, liquid, items, power, or data. Devices may have two input connectors (e.g., a pipe join receiving from two branches).

Output / Output2: Egress points. Devices may have two output connectors (e.g., a splitter or dual-export device).

Waste: Designated waste/byproduct outlet. Semantically distinct from Output for UI and gameplay clarity.

Usage in Connection

Every Connection stores its role:

public class Connection
{
    public ConnectionRole ConnectionRole;
    // ...
}

The role is paired with the network type (ConnectionType). For example: - A data-input connector: ConnectionType = NetworkType.Data, ConnectionRole = ConnectionRole.Input - A power-output connector: ConnectionType = NetworkType.Power, ConnectionRole = ConnectionRole.Output - A combined power-and-data input: ConnectionType = NetworkType.PowerAndData, ConnectionRole = ConnectionRole.Input

Display and UI

The Connection class uses both NetworkType and ConnectionRole for display names:

public string ToStationpediaName()
{
    if (ConnectionRole != ConnectionRole.None)
    {
        StringBuilder stringBuilder = new StringBuilder();
        stringBuilder.Append(ConnectionType.GetName()).Append(" ");
        stringBuilder.Append(ConnectionRole.GetName());
        return stringBuilder.ToString();
    }
    if (ConnectionRole == ConnectionRole.None)
    {
        return GameStrings.ConnectionGeneric.DisplayString;
    }
    return EnumCollections.NetworkType.GetName(ConnectionType);
}

Examples: - "Data Input" (Data + Input) - "Power Output" (Power + Output) - "Power And Data Input" (PowerAndData + Input) - Generic connection name if ConnectionRole is None

Verification history

• 2026-06-19: Initial documentation from Assembly-CSharp.dll decompilation (v0.2.6228.27061). All enum values and role semantics verified.

Open questions

None at this time.