systems.cfg - [ELECTRICAL]

This section controls everything related to the aircraft electrical systems. An electrical system is defined by its components, of which there are 5 types:

  • circuits: A circuit consumes power, requiring current to function (see Circuits for governing SimVars).
  • batteries: A battery is a power source with a set capacity in ampere hours (see Batteries for governing SimVars).
  • alternators: The alternator is a power source dependent on an engine/APU's RPM (see Alternators for governing SimVars).
  • external power: This is an external power source which delivers power as long as it is available (see External Power for governing SimVars).
  • buses: a bus is what creates connections between systems and sub-systems (see General / Buses for governing SimVars).
    IMPORTANT! A system only exists if at least one bus is defined. If no buses are defined, then the simulation will assume you are using the Legacy Parameters.

Each of these components can be defined multiple times as parameters within the [ELECTRICAL] configuration header. For how to access the information that these parameters add to an aircraft, please see the section on SimVars And Keys.

 

Parameter Description Type Required
circuit.N The aircraft circuit hash table. You can define multiple circuits for an aircraft, starting at N = 1. Details on the circuit map contents are given here: circuit.N

Hash Map

(see Data Types for more information)

Yes
battery.N The aircraft battery hash table. You can define multiple batteries for an aircraft, starting at N = 1. Details on the map contents are given here: battery.N

Hash Map

(see for more information)

Yes
alternator.N The aircraft alternator hash table. You can define multiple alternators for an aircraft, starting at N = 1. Details on the map contents are given here: alternator.N

Hash Map

(see Data Types for more information)

Yes
externalpower.N The aircraft external power supply hash table. You can define multiple external power supplies for an aircraft, starting at N = 1. Details on the map contents are given here: externalpower.N

Hash Map

(see Data Types for more information)

Yes
bus.N The aircraft bus hash table. You can define multiple buses for an aircraft, starting at N = 1. Details on the map contents are given here: bus.N

Hash Map

(see Data Types for more information)

Yes
curve.N A 1D table of values. You can define multiple curves for an aircraft, starting at N = 1, and the curves can be used in multiple different parameters. Details on the table contents are given here: curve.N

1D Table of Values

(see Data Types for more information)

Yes
procedure.N A 1D table of values used to create a set of actions that can either be manually triggered or triggered when entering a given context. You can define multiple procedures for an aircraft, starting at N = 1. Details on the table contents are given here: procedure.N

Hash Map

(see Data Types for more information)

No
max_battery_voltage The maximum battery voltage. Float Yes
generator_alternator_voltage The generator alternator voltage. Float Yes
max_generator_alternator_amps The maximum alternator amperage. Float Yes
alternators Set to TRUE (1) to indicate that alternators are available, or FALSE (0) otherwise. Bool Yes
num_batteries The number of batteries available. Integer Yes
electric_always_available

Set to TRUE(1) to always enable electrical equipment, otherwise set to FALSE(0).

Bool Yes

 

 

circuit.N

Circuits are the most used electrical components, and the circuit hash map is comprised of the following multiple key:value pairs, separated by the # symbol. This hash map takes the following form:

circuit.N = Type:<circuit_type>:<index>#Connections:<bus:max_amp>#Power:<table>#Name:<debug_name>

Note that you may have more than one circuit of the same type, in which case you would increment the <index> parameter, starting from 1. A full example of a single circuit definition would be like this:

circuit.1 = Type:CIRCUIT_GENERAL_PANEL:1#Connections:bus.1#Power:0.5,1,20.0#Name:General_Panel_Main
Key Value Description Required
Type 1D Table

Table that contains the type of circuit being created along with an identifying index for the circuit type (in case you wish to define multiple circuits of the same type). You can find a complete list of the available variables just below this table. Additionally, when defining a type, you also give it an index value so that different circuits of the same type can be identified. For example:

circuit.15 = Type:CIRCUIT_FUEL_PUMP:1#Connections:bus.2#Power:3,5,20#Name:Fuel_P_L1
circuit.16 = Type:CIRCUIT_FUEL_PUMP:2#Connections:bus.2#Power:3,5,20#Name:Fuel_P_L2
circuit.17 = Type:CIRCUIT_FUEL_PUMP:3#Connections:bus.2#Power:3,5,20#Name:Fuel_P_R1
circuit.18 = Type:CIRCUIT_FUEL_PUMP:4#Connections:bus.2#Power:3,5,20#Name:Fuel_P_R2
Yes
Connections 1D Table

Table of the different buses that this circuit is connected to, eg:

Connections: bus.1, bus.3

You can find more information from the following section: Connections

Yes
Power 1D Table of 3 Values

This table of three values is related to the power consumption, where:

  • 1st value: A minimum Watt consumption
  • 2nd value: A maximum/ideal Watt consumption
  • 3rd value: A minimum voltage

Here is an example of how this key/value pair is structured:

Power:10.0, 15.0, 20.0

You can find a full and detailed explanation of what these values refer to from the following section: circuit.N - Power

Yes
Name String The name of the circuit. This is an identifier name and is only added for debugging purposes. Cannot contain special characters or spaces. No

 

 

circuit.N - Type

When defining circuits for the electrical system, the first parameter of the hash-map that is a variable that defines the type of circuit. The table below shows all the variables that correspond to each of the available types as well as a brief description of what that circuit controls.

 

Type Description
CIRCUIT_ADC_AHRS

Circuit checked for ADC and AHRS system availability, no effect on sim

CIRCUIT_ADF_DME

Circuit checked for ADF and DME system availability, no effect on sim

CIRCUIT_APU_STARTER

Circuit controlling APU starter state

CIRCUIT_AUDIO

Circuit checked for audio system availability

CIRCUIT_ATTITUDE_INDICATOR Circuit checked for attitude indicator availability (if electrical)
CIRCUIT_AUTO_BRAKES

Circuit controlling auto brakes

CIRCUIT_AUTO_FEATHER

Circuit controlling auto feathering

NOTE: Please see the Note On Autofeathering for more information.

CIRCUIT_AUTOPILOT

Circuit checked for autopilot availability

CIRCUIT_AVIONICS

Circuit checked for avionics availability

CIRCUIT_AVNFAN

Circuit checked for avionics fan system availability, no effect on sim

CIRCUIT_COM

Circuit checked for COM system availability

CIRCUIT_DIRECTIONAL_GYRO

Circuit checked for directional gyro system availability

CIRCUIT_DIRECTIONAL_GYRO_SLAVING

Circuit checked for directional gyro slaving system availability

CIRCUIT_ELECTRIC_ENGINE Circuit controlling the electric engine (if available).
CIRCUIT_FIS

Circuit checked for FIS system availability, no effect on sim

CIRCUIT_FLAP_MOTOR

Circuit turned on when flaps are moving (if electrical)

CIRCUIT_FUEL_PUMP

Circuit controlling electrical fuel pumps. See the section on Pump.N for more information.

CIRCUIT_FUEL_TRANSFER_PUMP

Circuit controlling electrical fuel transfer pumps

CIRCUIT_FUEL_VALVE Circuit controlling a [FUEL_SYSTEM] valve. See the section on Valve.N for more information.
CIRCUIT_GEAR_MOTOR

Circuit turned on when landing gears are moving (if electrical)

CIRCUIT_GEAR_WARNING

Circuit checked for gear warning system availability

CIRCUIT_GENERAL_PANEL

Circuit checked for general power availability

CIRCUIT_GPS

Circuit checked for avionics GPS system availability

CIRCUIT_HYDRAULIC_PUMP

Circuit controlling electric hydraulic pumps

CIRCUIT_INVALID

Invalid circuit which has no direct impact on sim state

CIRCUIT_LIGHT_BEACON

Circuit controlling beacon light state

CIRCUIT_LIGHT_CABIN

Circuit controlling cabin light state

CIRCUIT_LIGHT_GLARESHIELD

Circuit controlling glareshield light state

CIRCUIT_LIGHT_LANDING

Circuit controlling landing light state

CIRCUIT_LIGHT_LOGO

Circuit controlling logo light state

CIRCUIT_LIGHT_NAV

Circuit controlling navigation light state

CIRCUIT_LIGHT_PANEL

Circuit controlling panel light state

CIRCUIT_LIGHT_PEDESTAL

Circuit controlling pedestal light state

CIRCUIT_LIGHT_RECOGNITION

Circuit controlling recognition light state

CIRCUIT_LIGHT_STROBE

Circuit controlling strobe light state

CIRCUIT_LIGHT_TAXI

Circuit controlling taxi light state

CIRCUIT_LIGHT_WING

Circuit controlling wing light state

CIRCUIT_MARKER_BEACON

Circuit checked for beacon marker system availability

CIRCUIT_MFD

Circuit checked for MFD system availability, no effect on sim

CIRCUIT_NAV

Circuit checked for NAV system availability

CIRCUIT_PFD

Circuit checked for PFD system availability, no effect on sim

CIRCUIT_PITOT_HEAT

Circuit controlling pitot heat state

CIRCUIT_PROP_DEICE

Circuit controlling prop deicing

CIRCUIT_PROP_SYNC

Circuit controlling prop sync

CIRCUIT_STALL_WARNING

Circuit checked for stall warning availability (if electrical)

CIRCUIT_STANDBY_VACUUM

Circuit controlling standby vacuum

CIRCUIT_STARTER

Circuit controlling electrical starter state

CIRCUIT_TURN_COORDINATOR

Circuit checked for turn coordinator system availability

CIRCUIT_WING_FOLD Circuit controlling the wing folding system (if available).
CIRCUIT_XML

Generic circuit which has no direct impact on sim state

CIRCUIT_XPNDR

Circuit checked for transponder system availability

 

 

circuit.N - Power

This parameter takes a table of three values to define the power consumption, where:

  • 1st value: A minimum Watt consumption
  • 2nd value: A maximum/ideal Watt consumption
  • 3rd value: A minimum voltage

These wattage values and minimum voltage let us define a range for the resistance (Ohm) used for interpolation when selecting a power setting for a circuit. By default a circuit aims for the maximum power setting (maximum/ideal Watt consumption).

 

In the simulation, an aircraft circuit functions in a similar way as they do in real life. The load (in amps) drawn by a circuit is defined by the received voltage divided by it's internal resistance. Below is an example of how this key/value pair is structured:

#Power:10.0, 15.0, 20.0

Here the values represent: MinW=10W, MaxW=15W, MinV=20.0V.

 

Generated values for resistance are:

  • ResMin(Ohm) = 20.0/(10.0/20.0) # MinV / (MinW/MinV) -> resistance for min power setting
  • ResMax(Ohm) = 20.0/(15.0/20.0) # MinV / (MaxW/MinV) -> resistance for max power setting

 

Which means (using Ohm's law) that the circuit will consume:

  • I(Amps) = (Voltage / Resistance)
  • I(Amps) = 20.0 / ResMax(Ohm) = 0.75A (at 20.0V and max power setting)
  • I(Amps) = 28.0 / ResMax(Ohm) = 1.05A (at 28.0V and max power setting)
  • I(Amps) = 20.0 / ResMin(Ohm) = 0.5A (at 20.0V and min power setting)
  • I(Amps) = 28.0 / ResMin(Ohm) = 0.7A (at 28.0V and min power setting)

 

The power setting lets us have a variable resistance which can be used for any purposes. For example interior lights use this power setting for dimming. Moreover, in some situations, power might be limited. If the whole system is working using alternators then the power generated might not be enough to sustain every circuit. The power allocated to each circuit is then balanced as a proportion of the circuit MaxW value. A circuit will stay powered as long as the received power is higher than the MinW value and voltage is higher than MinV. This let us define priority in which system gets turned off first by lack of power. Reducing a circuit power setting will give more energy to the other circuits.

 

 

battery.N

A battery is a power supplier with a set capacity that decreases over time depending on the load it must sustain. The battery hash map is comprised of a set of key:value pairs, separated by the # symbol and takes the following form:

battery.N = Connections:<buses>#Capacity:<value>#Voltage:<curve_ref>#Name:<debug_name>

A full example of a single battery definition would be like this:

battery.1 = Connections:bus.3#Capacity:13.6#Voltage:curve.1#Name:Main_Battery
Key Value Description Required
Connections 1D Table

Table of the different buses that this battery is connected to, eg:

Connections: bus.1, bus.3

You can find more information from the following section: Connections

Yes
Capacity Float The battery capacity, in ampere hours.
Voltage Curve.N The voltage for capacity percentage, defined using a curve (explained in the curve.N section).
Name String The name of the battery. This is an identifier name and is only added for debugging purposes. Cannot contain special characters or spaces. No

 

 

alternator.N

This defines an alternator power source dependent on an engine/APU's RPM, and the appended number corresponds to its unique ID (N, starting at 1). The alternator hash map is comprised of key:value pairs, separated by the # symbol, and takes the following form:

alternator.N = Connections:<buses>#iEng:<value>#Voltage:<curve_ref>#load:<curve_ref>#Name:<debug_name>

or:

alternator.N = Connections:<buses>#iEng:<value>#RatedVoltage:<value>#load:<curve_ref>#Name:<debug_name>

A full example of a single alternator definition would be like this:

alternator.1 = Connections:bus.3#iEng:0#RatedVoltage:28#Load:curve.3#Name:LH_Alternator
Key Value Description Required
Connections 1D Table

Table of the different buses that this alternator is connected to, eg:

Connections: bus.1, bus.3

You can find more information from the following section: Connections

Yes
iEng Integer An engine index to get it's power from (starting at 0). This is only required if IsOnAPU is used and set to TRUE (1). No
Voltage Curve.N The voltage for the given RPM or %RPM, defined using a curve (explained in the curve.N section). This should only be supplied if the RatedVoltage parameter is not used. No
RatedVoltage Float The voltage that the alternator is rated for. This should only be supplied if the Voltage parameter is not used. No
Load Curve.N The load values based on RPM, defined using a curve (explained in the curve.N section). Yes
IsOnAPU Bool When this is set to TRUE (1), the alternator is linked to the APU instead of an engine. For an engine this can be omitted or set to FALSE (0). Note that if set to true, the iEng key should be omitted. No
Name String The name of the alternator. This is an identifier name and is only added for debugging purposes. Cannot contain special characters or spaces. No

 

 

externalpower.N

An external power source is a power supplier with a constant and infinite power output, and the appended number corresponds to its unique ID (N, starting at 1). The external power hash map is comprised of key:value pairs, separated by the # symbol, and takes the following form:

externalpower.N = Connections:<buses>#RatedVoltage:<value>#Load:<value>#Name:<debug_name>

A full example of a single external power source definition would be like this:

externalpower.1 = Connections:bus.8#RatedVoltage:28.5#Load:400
Key Value Description Required
Connections 1D Table

Table of the different buses that this alternator is connected to, eg:

Connections: bus.1, bus.3

You can find more information from the following section: Connections

Yes
RatedVoltage Float The voltage that the alternator is rated for.
Load Integer The load output, which is constant.
Name String The name of the external power source. This is an identifier name and is only added for debugging purposes. Cannot contain special characters or spaces. No

 

 

bus.N

A bus is a hub for connecting different components (and other buses) to each other, and the appended number corresponds to its unique ID (N, starting at 1). The bus hash map is comprised of key:value pairs, separated by the # symbol, and takes the following form:

bus.N = Connections:<buses>#Name:<debug_name>

A full example of a single bus definition would be like this:

bus.3 = Connections:bus.1, bus.2#Name:Hot_Battery_BUS

 

Key Value Description Required
Connections 1D Table

Table of the different buses that this bus is connected to, eg:

Connections: bus.1, bus.3

You can find more information from the following section: Connections

No
Name

string

The name of the bus. This is an identifier name and is only added for debugging purposes. Cannot contain special characters or spaces. No

 

 

curve.N

The curve parameter is defined as a 1D table of paired values, and the parameter is appended with a number that corresponds to its unique ID (N, starting at 1). The exact number of paired values that are in the curve will depend on the use the curve is going to get, since curves are used by other parameters to store information. For example, you may have defined a battery like this:

battery.1 = Connections:bus.3,bus.5#Capacity:15.5#Voltage:curve.1#Name:Battery_Main

In this case, curve.1 references the battery voltage capacity, and would have been defined like this:

curve.1 = 0:21, 0.1:10.5, 0.5:12, 0.9:13, 1:13.4

 

 

procedure.N

Procedures are a set of actions that can either be manually triggered or triggered when entering a given context. Procedures are created one at a time and appended with a number that corresponds to its unique ID (N, starting at 1). They consist of a context and then a series of paired values telling the simulation what procedures (actions) to carry out within that context. The general structure for a procedure is as follow:

procedure.1 = <Context>#<action:id>,<value>#<action:id>,<value>#<action:id>,<value>#...

When creating the procedure, the context can only be one of the following three constants:

 

Context Description
None

No context, can only be manually triggered.

Autostart Triggered manually, or automatically when auto-starting the engines.
Autoshutdown triggered manually, or automatically when auto-shuting down the engines.

 

Once you have the given context, you can add in the actions to be performed when the procedure is triggered (either manually or automatically) with each action separated by a #. Every action takes a given number of arguments and will manipulate the state of the system, and the actions themselves can only be one of the following constants:

 

Action Parameters Description
SetCir ID, Bool Set the circuit with the specified ID switch state to the specified Bool value
SetBat ID, Bool Set the battery with the specified ID switch state to the specified Bool value
SetAlt ID, Bool Set the alternator with the specified ID switch state to the specified Bool value
SetExt ID, Bool Set the external power with the specified ID switch state to the specified Bool value
SetCir2Bus_Con ID(Bus), ID, Bool Set the circuit with the specified ID to bus with the specified bus ID connection state to the specified Bool value
SetBat2Bus_Con ID(Bus), ID, Bool Set the battery with the specified ID to bus with the specified bus ID connection state to the specified Bool value
SetAlt2Bus_Con ID(Bus), ID, Bool Set the alternator with the specified ID to bus with the specified bus ID connection state to the specified Bool value
SetExt2Bus_Con ID(Bus), ID, Bool Set the external power with the specified ID to bus with the specified bus ID connection state to the specified Bool value
SetBus2Bus_Con ID(Bus), ID, Bool Set the bus with the specified ID to bus with the specified bus ID connection state to the specified Bool value
SetCir2Bus_Brk ID(Bus), ID, Bool Set the circuit with the specified ID to bus with the specified bus ID breaker state to the specified Bool value
SetBat2Bus_Brk ID(Bus), ID, Bool Set the battery with the specified ID to bus with the specified bus ID breaker state to the specified Bool value
SetAlt2Bus_Brk ID(Bus), ID, Bool Set the alternator with the specified ID to bus with the specified bus ID breaker state to the specified Bool value
SetExt2Bus_Brk ID(Bus), ID, Bool Set the external power with the specified ID to bus with the specified bus ID breaker state to the specified Bool value
SetBus2Bus_Brk ID(Bus), ID, Bool Set the bus with the specified ID to bus with the specified bus ID breaker state to the specified Bool value
SetCirPwr ID, Percent Set the circuit with the specified ID power setting to the specified percent value (0 to 100%)

 

To see how this works in practice, let's look at the following example: 

procedure.1 = None#SetCir:5,0#SetBat:1,1#SetBus2Bus_Con:1,4,1

In this example, the procedure will perform the following three actions when it is manually triggered (the context None will only work with manual triggers):

  • SetCir:5,0: Turn off the circuit with ID 5
  • SetBat:3,1: Turn on the battery with ID 3
  • SetBus2Bus_Con:1,4,1: Sets the bus with ID 1 to transfer electricity to the bus with ID 4  

 

Triggering Procedures

As mentioned above, procedures can be manually triggered and/or auto triggered. Auto triggering is performed on engine start or shutdown - assuming the correct context is used - but manual triggering requires using the key event ELECTRICAL_EXECUTE_PROCEDURE (in WebAssembly or RPN or any other source). This key event requires 2 arguments to be passed with it, although the second one is optional:

  • [0] = Procedure ID: This is the ID of the procedure to be triggered, for example to to trigger procedure.3 the index would be 3.
  • [1] = bInverse: This is a boolean value that, if omitted, will default to 0 (FALSE). If it is set to 1 (TRUE) then the procedure boolean values will be inverted when executing the procedure. For example, if the procedure has the action SetCir:5,0, it will then become SetCir:5,1.

 

 

Connections

Connections define links between buses and power suppliers/consumers, and they are used in the circuit.N, battery.N, alternator.N, externalpower.N and bus.N parameters within the electrical system.

 

When defining a connection you need to give at least one target bus, specifying the ID value, eg:

Connections:bus.1, bus.3

You may also, optionally, give a maximum amp value for the bus, separating it from the bus ID using a ":". For example:

Connections:bus.1:3.25, bus.3:2.66

This amp value is the amperage above which the breaker will automatically trigger, cutting the power flow through the bus. If this amp value is not defined, then the default behaviour is for the connection to sustain an infinite current.

 

 

Keys

The table below shows the different key event IDs that can be used to modify things within the electrical system of an aircraft. These would be used along with the Aircraft Electrics Variables (as explained in the section SimVars And Keys):

 

Key Event ID
ELECTRICAL_CIRCUIT_TOGGLE
ELECTRICAL_CIRCUIT_POWER_SETTING_SET
PANEL_LIGHTS_POWER_SETTING_SET
CABIN_LIGHTS_POWER_SETTING_SET
PEDESTRAL_LIGHTS_POWER_SETTING_SET
GLARESHIELD_LIGHTS_POWER_SETTING_SET
TOGGLE_MASTER_BATTERY
TOGGLE_MASTER_BATTERY_ALTERNATOR
TOGGLE_EXTERNAL_POWER
ELECTRICAL_BUS_BREAKER_TOGGLE
ELECTRICAL_BUS_TO_BUS_CONNECTION_TOGGLE
ELECTRICAL_BATTERY_BREAKER_TOGGLE
ELECTRICAL_BUS_TO_BATTERY_CONNECTION_TOGGLE
ELECTRICAL_ALTERNATOR_BREAKER_TOGGLE
ELECTRICAL_BUS_TO_ALTERNATOR_CONNECTION_TOGGLE
ELECTRICAL_CIRCUIT_BREAKER_TOGGLE
ELECTRICAL_BUS_TO_CIRCUIT_CONNECTION_TOGGLE
ELECTRICAL_EXTERNAL_POWER_BREAKER_TOGGLE
ELECTRICAL_BUS_TO_EXTERNAL_POWER_CONNECTION_TOGGLE
ELECTRICAL_EXECUTE_PROCEDURE

 

 

 

Legacy Parameters

This section lists the parameters from FSX that were used to create an electrical system. With Microsoft Flight Simulator, these parameters still work to maintain backwards compatibility, butwe strongly recommend that you update any aircraft using these to the latest SDK version of the electrical system that uses componemnts rather than fixed parameters.

 

Parameter Description Type Required
max_battery_voltage The maximum battery voltage. Float Yes
generator_alternator_voltage The generator alternator voltage. Float Yes
max_generator_alternator_amps The maximum alternator amperage. Float Yes
alternators Set to TRUE (1) to indicate that alternators are available, or FALSE (0) otherwise. Bool Yes
num_batteries The number of batteries available. Integer Yes
electric_always_available

Set to TRUE(1) to always enable electrical equipment, otherwise set to FALSE(0).

Bool Yes
battery_capacity_pct_to_voltage

Can be used to override default settings for correspondence between % Max Battery Capacity and voltage.

Table No
battery_max_capacity_amph

Can be used to override the default Battery Capacity (in AH). Default is 24 or 42 depending on Battery Voltage.

Float No
battery_charging_current

Controls the battery's charging current (In Amps). Default is 10% of the capacity.

Float No
apu_pct_rpm_per_second

Controls the speed at which the APU's RPM increases. Default is 0.4.

Float No
navcom1

Can be used to override default settings for the NAVCOM1 electrical circuit.

2D Table of Floats

(see Data Types for more information)

 

Table is comprised of three values:

  1. Bus Type
  2. max amp
  3. min voltage

 

No
navcom2

Can be used to override default settings for the NAVCOM2 electrical circuit.

navcom3

Can be used to override default settings for the NAVCOM3 electrical circuit.

flap_motor

Can be used to override default settings for the flaps motor circuit.

gear_motor

Can be used to override default settings for the landing gear motor circuit.

autopilot

Can be used to override default settings for the autopilot circuit.

avionics_bus

Can be used to override default settings for the avionics bus circuit.

avionics

Can be used to override default settings for the avionics circuit.

pitot_heat

Can be used to override default settings for the pitot heat circuit.

additional_system

Can be used to override default settings for the additional systems circuit.

marker_beacon

Can be used to override default settings for the marker beacon circuit.

gear_warning

Can be used to override default settings for the gear warning circuit.

fuel_pump

Can be used to override default settings for the fuel circuit.

starter1

Can be used to override default settings for the engine 1 starter circuit.

starter2

Can be used to override default settings for the engine 2 starter circuit.

starter3

Can be used to override default settings for the engine 3 starter circuit.

starter4

Can be used to override default settings for the engine 4 starter circuit.

light_nav

Can be used to override default settings for the navigation light circuit.

light_beacon

Can be used to override default settings for the beacon light circuit.

light_landing

Can be used to override default settings for the landing light circuit.

light_taxi

Can be used to override default settings for the taxi light circuit.

light_strobe

Can be used to override default settings for the strobe light circuit.

light_panel

Can be used to override default settings for the panel light circuit.

light_cabin

Can be used to override default settings for the cabin light circuit.

light_recognition

Can be used to override default settings for the recognition ligth circuit.

light_wing

Can be used to override default settings for the wing light circuit.

light_logo

Can be used to override default settings for the logo light circuit.

prop_sync

Can be used to override default settings for the prop-sync circuit.

auto_feather

Can be used to override default settings for the auto-feather circuit.

auto_brakes

Can be used to override default settings for the auto-brake circuit.

standby_vacuum

Can be used to override default settings for the standby vacuum circuit.

hydraulic_pump

Can be used to override default settings for the hydraulic pump circuit.

fuel_transfer_pump

Can be used to override default settings for the fuel transfer pump circuit.

propeller_deice

Can be used to override default settings for the propellor de-ice circuit.

directional_gyro

Can be used to override default settings for the directional gyro circuit.

directional_gyro_slaving

Can be used to override default settings for the directional gyro slaving circuit.

 

Legacy Buses

The following table shows the available legacy Bus Types available to the FSX circuits:

Bus Type Bus
0

Main Bus

(most components connected here)

1 Avionics Bus
2 Battery Bus
3

Hot Battery Bus

(bypasses Master switch)

4

Generator/Alternator Bus 1

(function of engine 1)

5

Generator/Alternator Bus 2

(function of engine 2)

6

Generator/Alternator Bus 3

(function of engine 3)

7

Generator/Alternator Bus 4

(function of engine 4)