Using it

Options

Every setting of the aircraft, what it is for, its values and its default. All options are L:vars for now. The EFB settings page will write the same L:vars when the EFB is rewritten.

How to set an option#

  1. In MSFS, turn on Developer Mode.
  2. Open Tools → Behaviors, select the aircraft, and open the LocalVariables tab.
  3. Find the L:var and enter the value. Any other tool that writes L:vars works too.
  • Changes take effect at once.
  • An L:var that was never set reads 0, so 0 is always the default, and the default is always Zibo's behaviour unless the table says otherwise.
  • L:vars reset at each flight start. Only the hardware throttle mode is remembered.

Flying#

L:LU737_THR_HW_MODE Hardware throttle against the autothrottle#

MSFS has one throttle, shared by your hardware and the autothrottle. X-Plane keeps them apart, so this is not a Zibo option. It decides who moves the levers.

ValueBehaviour
0 (default)Last mover. While the A/T drives, small axis noise is ignored. Moving the hardware more than 3 % is a manual override, relative to where the A/T had the lever, so there is no thrust jump. The A/T takes the levers back 2 s after the hardware stops. Without the A/T, the hardware takes a lever once it reaches the lever's position
1Follow the A/T. The hardware is ignored while the A/T drives. Otherwise it moves the levers directly
2Follow the hardware. The levers always follow it

Remembered between flights · since build 36 · the reverse range from the hardware always passes at once

L:LU737_AP_ROLL_GAIN Autopilot roll gain#

Multiplies how hard the autopilot servo rolls toward the commanded bank. Lower it if the autopilot rolls in too sharply or rocks the wings. The servo is ours, so this is not a Zibo option.

ValueBehaviour
0 (default)Gain 1
0.2 to 3The multiplier. 0.5 is the gain of builds 25 to 44

Since build 45

L:LU737_MANUAL_REVERSION Heavy controls without hydraulics#

With hydraulic systems A and B both below 1,000 psi (cold and dark, for example), the stick's elevator and aileron are passed on at 60 % authority and 0.8 of full travel per second. This stands for the 737's heavy, slow manual reversion, because MSFS cannot load the stick.

ValueBehaviour
1 (set at load)On
0Off. The stick always has full authority

Since build 48 · L:LU737_MANUAL_REVERSION_ACTIVE shows when it is acting

L:LU737_ILS_REALISM_OFF NAV receiver realism#

MSFS's ILS is a perfect beam. The aircraft's receivers add what real ones show. The autopilot, the FMS and the displays all read the same receivers, so the needles you see are the ones the autopilot flies.

ValueBehaviour
0 (default)Realism on. False glideslopes at 6° (reversed) and 9°. Needles that wander and jump with flickering flags beyond the service volume. Beam bends. The back course's reversed sense. The DME takes 2 to 4 s to lock on and remembers its distance for 8 s
1MSFS's clean signal

Since build 71 · not a Zibo option · details

Systems#

L:LU737_IRS_ALIGN_TIME IRS alignment time#

How long the IRS takes to align. This is Zibo's ALIGN TIME option, plus an instant setting. It is read when an alignment starts.

ValueBehaviour
0 (default)Real, by latitude: 300 s at the equator, 333 s at 22° N, 400 s at 40°, up to 1,020 s at 82°
1Fast, 60 s (Zibo SHORT)
2Instant: NAV about 3 s after the selector reaches NAV. Not a Zibo setting
3Long, 150 s (Zibo LONG)

Since build 15

L:LU737_EEC_HOTSTART_OFF EEC hot-start abort#

Whether the engine's electronic control aborts a hot start on the ground.

ValueBehaviour
0 (default)As Zibo: the EEC aborts a ground hot start at about 711 °C
1No abort. A wet start runs into the red until you cut the start lever. Not Zibo

Since build 13

L:LU737_ENGINE_AIR_START Ground air start cart#

Connects the ground air start cart. In Zibo this is an EFB ground service. It stays an L:var until the EFB is rewritten.

ValueBehaviour
0 (default)Not connected
1Connected

Since milestone 3

Displays#

L:LU737_EICAS_FUEL_FORMAT Fuel display on the upper EICAS#

Zibo's FUEL GAUGE option.

ValueBehaviour
0 (default)FUEL QTY box
1Three round gauges

L:LU737_EICAS_FUEL_UNITS Fuel units#

Zibo's UNITS option, for the EICAS fuel display.

ValueBehaviour
0 (default)KG
1LBS

L:LU737_DU_PAGE_BUILD_OFF Display page build#

In LevelUp's aircraft, a page is drawn in stages after an MFD ENG or SYS press.

ValueBehaviour
0 (default)As Zibo / LevelUp: the lower DU's ENG page builds up over about 1.2 s
1Pages appear at once. Not Zibo

L:LU737_DU_GAIN Display brightness#

The emissive strength of all display surfaces in MSFS. Raise it if the displays look dim, lower it if they bloom.

ValueBehaviour
0 (default)Strength 2
above 0The strength

L:LU737_SIM_GRAPHICS_VIEW_HIDE_YOKE Yokes#

Zibo's HIDE YOKE. A click on the yoke toggles it too.

ValueBehaviour
1 (set at load)Yokes shown
0Yokes hidden

Since build 31

FMS and navigation data#

L:LU737_FMS_HZ FMS rate#

How often per second Zibo's FMS scripts run. Each run gets the elapsed time, so the FMS's own timing does not change. Lower it if the simulator's frame rate suffers. The CDU then responds more slowly.

ValueBehaviour
20 (set at load)20 runs per second
above 0That many runs per second
0The FMS stops. Back above 0, it resumes

Since build 44 · readouts: L:LU737_FMS_STATE (0 not loaded, 1 running, −1 failed to load, 2 stopped), _MS, _MS_MAX, _LOAD_MS, _ERRORS, _MEM_KB

Use it after changing MSFS's navigation data, or if the FMS does not find things it should.

ValueBehaviour
0 (default)Nothing
1The lists of the world's waypoints, navaids and airports are read again and the FMS is reloaded with them within seconds. Frequencies and names follow in the background, nearest first. Airways, and an airport's runways and procedures, are fetched when you enter them

Since build 52 · progress: L:LU737_NAV_STATE (2 = ready), L:LU737_NAV_DETAILS (%) · details

Failures#

Set to 1 to fail, 0 to repair. They are not kept between flights. These are Zibo's failure items for the APU. Zibo's other failures are not rewritten.

L:var What happens
L:LU737_FAIL_APU_OVERSPEED On a running APU the governor fails. N1 runs up past 100 % and the ECU trips at 107 %, about 3.7 s later. APU off, generator off, OVERSPEED light (it stays lit up to 300 s after OFF)
L:LU737_FAIL_APU_LOW_OIL_QTY The APU shuts down, LOW OIL PRESSURE
L:LU737_FAIL_APU_LOW_OIL_PRESS LOW OIL PRESSURE while starting or running. A running APU shuts down
L:LU737_FAIL_APU_START The APU does not start: FAULT
L:LU737_FAIL_APU_FIRE No effect yet. Fire detection is not rewritten
L:LU737_FAIL_APU_BLEED_VALVE The APU bleed valve is frozen
L:LU737_FAIL_APU_PRESSURIZATION Zibo's APU pressurisation failure

Cockpit variants#

The aircraft sets these once at load, to the values Zibo loads with. They choose which parts of the cockpit model are shown. Writing another value changes the model at once.

L:var Set to Meaning
L:LU737_HUD_DISABLE 1 No HUD (HGS) installed
L:LU737_RAAS_NOT_INSTALLED 1 No RAAS panel
L:LU737_RMI 1 RMI instead of the standby navigation display
L:LU737_ALT_INTV_BUT, L:LU737_SPD_INTV_BUT 1 MCP with ALT INTV and SPD INTV buttons
L:LU737_LAYOUT_1_HIDE 1 Cabin layout 1 hidden
L:LU737_EFFECTS_NOSEWHEEL 2 Nosewheel effect
L:LU737_TAB_* 1 EFB tablet parts and click zones shown

Troubleshooting switches#

Leave these at 0. They correct a direction found wrong in the simulator without a new build. If you need one, report it so the default can be fixed.

L:var Value What it does
L:LU737_AP_ELEV_SIGN −1 Reverses the autopilot's elevator command. Use if the A/P pitches the wrong way at once
L:LU737_AP_AIL_SIGN −1 Reverses the autopilot's aileron command. Use if the A/P rolls the wrong way at once
L:LU737_AP_TRIM_SIGN −1 Reverses the pitch trim sent to MSFS. Use if the trim runs away
L:LU737_LOC_DOTS_PER_CDI 1 Localizer deviation scaled as MSFS's CDI (builds up to 44) instead of by the measured beam width

Read-only values for bug reports#

These are not settings. Read them in Behaviors → LocalVariables when you report a problem.

L:var Meaning
L:LU737_WASM_BUILD Build of the loaded systems module
L:LU737_WASM_ALIVE, _FRAME, _TIME The systems module runs (frame counter, sim time)
L:LU737_DU_UPPER_PWR, L:LU737_DU_LOWER_PWR Display unit power (bus power and Zibo's 32 s warm-up)
L:LU737_LOWER_DU_PAGE, _PAGE2 Lower DU page: 1/0 ENG, 0/1 SYS, 0/0 blank, 2/0 compact on the upper DU
L:LU737_THR_HW_STATE_1, _2 Hardware throttle per lever: −1 not masked, 0 waiting for pickup, 1 A/T has the lever, 2 manual override, 3 hardware has the lever
L:LU737_AP_SERVO_PITCH_ON, _ROLL_ON, _ELEVATOR, _AILERON, _PITCH_CMD, _ROLL_CMD Autopilot servo: channels engaged, what is sent, what is commanded
L:LU737_MSFS_BUS_VOLTS MSFS's own electrical bus voltage
L:LU737_SIMCONNECT 1 = the module's SimConnect is open (throttle and stick masks possible)
L:LU737_REV_MASKED 1 = the stick axes are masked for manual reversion, −1 = SimConnect refused
L:LU737_NAVn_GS_SIGN, _LOC_SIGN, _GS_THETA What the NAV receiver model has learned about MSFS's signs, and the elevation angle seen
L:LU737_NAV_FAIL Navigation data: 1 list requests refused, 2 not answered, 3 files not written

The complete list is in the options reference.

Zibo's own options#

Zibo's EFB has about 250 options. Each one is in one of four states here:

State Meaning
L:var You can set it now, with the L:var named above
fixed The aircraft uses Zibo's default. It becomes a setting when the EFB is rewritten
not yet The feature behind it is not rewritten (FMS options, sound, EFB, ground services, model variants)
n/a (MSFS) X-Plane-specific (joystick mapping, X-Plane plugins, rendering). MSFS's own settings do this
GroupL:varfixednot yetn/a (MSFS)Total
Displays, EFIS21616·34
Autopilot, autothrottle·294·33
Hardware, controls·3·1619
Aircraft configuration, model variants1330·34
Systems191·11
FMS / CDU (M5c)··19120
Loading, ground services, EFB, simulator··251439
Sound (not rewritten yet)··13·13
Total46010831203

Counted by rows of Zibo's config entries. A row with "…" (flap detents, all volumes) stands for a family of options and counts once.

Displays, EFIS 34
Zibo optionZibo defaultStatusNote
UNITS0L:varL:LU737_EICAS_FUEL_UNITS (EICAS fuel; the FMS when rewritten)
TRACK UP1fixeddisplay sources (avionics/src/du/*Sources.ts)
BARO IN HPA0fixedread by the ported Systems
MIN BARO RADIO0not yet
VOR RADIAL1not yet
ND RINGS1not yet
FUEL GAUGE0L:varL:LU737_EICAS_FUEL_FORMAT
FLIGHT CONTROL1fixeddisplay sources (avionics/src/du/*Sources.ts)
BRAKES TEMP1fixeddisplay sources (avionics/src/du/*Sources.ts)
SYNC PILOT0not yet
WHITE BUG0not yet
CHRONO VARIANT0fixeddisplay sources (avionics/src/du/*Sources.ts)
PFD FMC FLPSPD1fixeddisplay sources (avionics/src/du/*Sources.ts)
ND TCAS RANGE1not yet
CIRC AOA RA0fixeddisplay sources (avionics/src/du/*Sources.ts)
COM DECIMAL0fixeddisplay sources (avionics/src/du/*Sources.ts)
MMR COLOUR0fixeddisplay sources (avionics/src/du/*Sources.ts)
ISFD_RMI0fixedread by the ported Systems
PLUS HUNDRED0fixedread by the ported Systems
DIG_PRESS_PNL0fixeddisplay sources (avionics/src/du/*Sources.ts)
GS_ON_PFD0fixeddisplay sources (avionics/src/du/*Sources.ts)
ILS_GLS_ANN0not yet
OIL_QTY1fixeddisplay sources (avionics/src/du/*Sources.ts)
ARPT_MIN_RW0not yet
RADIO_ALT_CO0not yet
DECISION_HGT0not yet
RA_MINIMUMS0not yet
500_1000_BARO0not yet
MISSED_APP_COL0not yet
AC_SW_COLOUR0not yet
EICAS_FULL_N11not yet
EICAS_N1_NUM1not yet
SINGLE_CUE_FD0fixeddisplay sources (avionics/src/du/*Sources.ts)
SYNC PILOT STD0fixedread by the ported Systems
Autopilot, autothrottle 33
Zibo optionZibo defaultStatusNote
LOCK IDLE THR0not yet
THROTTLE NOISE0fixedread by the ported AFDS (0); the hardware throttle filter is L:LU737_THR_HW_MODE instead (3 % override)
THROTTLE LEVER1fixedread by the ported AFDS
YOKE DISCO AP2fixedread by the ported AFDS
LOCK THROTTLE0fixedread by the ported AFDS
SYNC THROTTLE0fixedread by the ported AFDS
TAKEOFF HDG0fixedread by the ported AFDS
GOAROUND HDG0fixedread by the ported AFDS
FO CALLOUT0fixedread by the ported AFDS
VNAV ALT DIS0fixedread by the ported AFDS
VNAVALT_ALTHLDnot yet
FD CAM0fixedread by the ported AFDS
CLB ALT1500fixedAFDS thrust reduction / acceleration heights until the FMS (M5c)
CLB ALT23000not yet
CUT ALT800fixedAFDS thrust reduction / acceleration heights until the FMS (M5c)
ACCEL ALT1000fixedAFDS thrust reduction / acceleration heights until the FMS (M5c)
EO ACCEL ALT1000fixedAFDS thrust reduction / acceleration heights until the FMS (M5c)
VORLOC_LNAV0fixedread by the ported AFDS
ROLLOUT0fixedread by the ported AFDS
IAN_DISABLE0fixedread by the ported AFDS
FF EICAS0fixedread by the ported AFDS
MCP_SPD_INTV1fixedread by the ported AFDS
MCP_ALT_INTV1fixedmodel variant L:LU737_ALT_INTV_BUT = 1
AT_WAKEUP0fixedread by the ported AFDS
VNAV_WU_IDLE15fixedread by the ported AFDS
VNAV COMMON1fixedread by the ported AFDS
ADD FIX PGS0fixedread by the ported AFDS
GS_BEFORE_LOC0fixedread by the ported AFDS
DOUBLE DERATE1fixedread by the ported AFDS
AP YOKE TLRNC0fixedread by the ported AFDS
SMART AP KNOB0not yet
YOKE TO CENTER1fixedread by the ported AFDS
FD HELPER0fixedread by the ported AFDS
Hardware, controls 19
Zibo optionZibo defaultStatusNote
TOE BRAKE AXIS0n/a (MSFS)MSFS controls settings / X-Plane hardware plugins; those read by the ported code stay 0
NOSEWHEEL AXIS0n/a (MSFS)MSFS controls settings / X-Plane hardware plugins; those read by the ported code stay 0
PITCH 0 ZONE0n/a (MSFS)MSFS controls settings / X-Plane hardware plugins; those read by the ported code stay 0
ROLL 0 ZONE0n/a (MSFS)MSFS controls settings / X-Plane hardware plugins; those read by the ported code stay 0
YAW 0 ZONE0n/a (MSFS)MSFS controls settings / X-Plane hardware plugins; those read by the ported code stay 0
FLAP DETENT UP … 40n/a (MSFS)MSFS controls settings / X-Plane hardware plugins; those read by the ported code stay 0
FLAP DT THR UP … 40fixedzibomod flap axis detents (build 37: 0, 0.0625 … 0.9375 as the oracle)
SPEEDBRAKE / LANDGEAR / MIXTURE / FLAP axis MAP, REV, …n/a (MSFS)MSFS controls settings / X-Plane hardware plugins; those read by the ported code stay 0
VIRTUAL YOKE0n/a (MSFS)MSFS controls settings / X-Plane hardware plugins; those read by the ported code stay 0
NS_SUPPORT0n/a (MSFS)MSFS controls settings / X-Plane hardware plugins; those read by the ported code stay 0
BRUNNER ENABLE0n/a (MSFS)MSFS controls settings / X-Plane hardware plugins; those read by the ported code stay 0
XHSI ENABLE0n/a (MSFS)MSFS controls settings / X-Plane hardware plugins; those read by the ported code stay 0
CFY ENABLE0n/a (MSFS)MSFS controls settings / X-Plane hardware plugins; those read by the ported code stay 0
CFY TRIM0n/a (MSFS)MSFS controls settings / X-Plane hardware plugins; those read by the ported code stay 0
SAM ENABLE0n/a (MSFS)MSFS controls settings / X-Plane hardware plugins; those read by the ported code stay 0
PARKBRAKE SET0fixedread by the ported Systems
MANIP_*n/a (MSFS)MSFS controls settings / X-Plane hardware plugins; those read by the ported code stay 0
GUARDED_COVERS0fixedread by the ported Systems
YOKE INPUT1n/a (MSFS)MSFS controls settings / X-Plane hardware plugins; those read by the ported code stay 0
Aircraft configuration, model variants 34
Zibo optionZibo defaultStatusNote
IRS DING0not yet
LONG STROBES0not yet
WINGS VARIANT0not yet
SATCOM VARIANT0not yet
PULSELITE0not yet
LED LIGHTS0not yet
HUD DISABLE1fixedmodel variant L:var set at load
HIDE YOKE1L:varL:LU737_SIM_GRAPHICS_VIEW_HIDE_YOKE (or click the yoke)
MMR0not yet
ASP TAT PROBE1not yet
SELCAL0not yet
NEW_FUELCUTOFF0not yet
NPS0not yet
YAW_DAMPER0not yet
MUTE SWITCHES0not yet
CLOCK_VARIANT0not yet
OLD MCP0not yet
RAAS0fixedmodel variant L:var set at load
CT_DISABLE0not yet
FUEL PUMPS0not yet
CAT III0not yet
BRAKES0not yet
NO_SMOKING0not yet
NO_VCR_SW0not yet
RMI1fixedmodel variant L:var set at load
EYEBROW0not yet
AFT_EXIT0not yet
PIP0not yet
FUEL_CUTOFF_SW0not yet
PNL_CAB_READY0not yet
FLTDCK_CALL0not yet
PA_IN_USE0not yet
STROBE COCKPIT1not yet
GYRO VIBRATORS0not yet
Systems 11
Zibo optionZibo defaultStatusNote
ALIGN TIME0L:varL:LU737_IRS_ALIGN_TIME
ENG NO RUNNING0fixedread by the ported Systems
BRAKE REM CHOCK1fixedbuild 37 (read 0 before)
TIRE BLOWN1fixedbuild 37 (read 0 before)
ENG_START_AUTO0fixedread by the ported Systems
PROBE_AUTO0fixedread by the ported Systems
SFP0fixedread by the ported hydraulics
HIGH_ALT_LDG0fixedread by the ported Systems
HYD_COMPENS0not yet
CTR_FPUMP_AUTO1fixedbuild 37: centre pump auto shutdown on (read 0 before)
MAX_RND_FAIL0fixedread by the ported AFDS; failures not rewritten
FMS / CDU (M5c) 20
Zibo optionZibo defaultStatusNote
PAUSE AT T/D0not yet
FPLN SAVE FMT0not yet
INIT REF SMART0not yet
FMC TYPE0not yet
NO RTE20not yet
GW_ENTRY0not yet
PLAN_FUEL1not yet
FMC BEEP1not yet
VNAV BARO COMP0not yet
APP 2ND PAGE0not yet
DEF APP RNP0not yet
DEF DME UPD1not yet
CMU2not yet
CPDLC1not yet
LPV INSTALL0not yet
TO TRIGGER0not yet
FMC INPUT LAG0not yet
CUST NAVDATA0n/a (MSFS)MSFS navdata
PRIOR TX COM0not yet
FMS ALT/SPD0not yet
Loading, ground services, EFB, simulator 39
Zibo optionZibo defaultStatusNote
REFUEL TIME0not yet
CHECKLIST0not yet
CHOCKS STATE0not yet
WINDSH.EFFECTS0n/a (MSFS)X-Plane / Zibo EFB features MSFS has its own way for
WINDSH.REFLECT0n/a (MSFS)X-Plane / Zibo EFB features MSFS has its own way for
GAUGES REFLECT0n/a (MSFS)X-Plane / Zibo EFB features MSFS has its own way for
PASSENGERS1not yet
GP CAB CONNECT0not yet
M STD WGHT87not yet
F STD WGHT76not yet
K STD WGHT35not yet
PAX LAYOUT4not yet
FA FWD190.5not yet
FA AFT190.5not yet
GALLEY FWD286not yet
GALLEY AFT410not yet
NOT_AIRSTAIRS0not yet
USE_EXT_STAIRS0not yet
PAX TIME0not yet
CARGO TIME0not yet
CATER TIME0not yet
HIDE SEATS0not yet
INT GND SRVCS0not yet
EXT_PAYLOAD0not yet
PARTICLE RAIN0n/a (MSFS)X-Plane / Zibo EFB features MSFS has its own way for
SHOW FPS0n/a (MSFS)X-Plane / Zibo EFB features MSFS has its own way for
AUTOSAVE0n/a (MSFS)X-Plane / Zibo EFB features MSFS has its own way for
PAUSE LOAD FLT1n/a (MSFS)X-Plane / Zibo EFB features MSFS has its own way for
VANISH_Y0n/a (MSFS)X-Plane / Zibo EFB features MSFS has its own way for
3D_ARROW1n/a (MSFS)X-Plane / Zibo EFB features MSFS has its own way for
EFB_COLORIZE1n/a (MSFS)X-Plane / Zibo EFB features MSFS has its own way for
EFB_BRIGHTNESS0n/a (MSFS)X-Plane / Zibo EFB features MSFS has its own way for
NETWORK0n/a (MSFS)X-Plane / Zibo EFB features MSFS has its own way for
METAR SOURCE0n/a (MSFS)X-Plane / Zibo EFB features MSFS has its own way for
PAX BOARDING1not yet
TO AIRSIDE0not yet
MSG AIRSIDE1not yet
START CARGO0not yet
SQUAWKn/a (MSFS)X-Plane / Zibo EFB features MSFS has its own way for
Sound (not rewritten yet) 13
Zibo optionZibo defaultStatusNote
ANNOUNC.SET NR0not yetno sound yet
ANNOUNCEM SET0not yetno sound yet
CALLOUT 5 … 2500not yetno sound yet
FO_CALLOUT_VAR0not yetno sound yet
CREW ANNOUN1not yetno sound yet
CHATTER PASS1not yetno sound yet
AIRPORT SET1not yetno sound yet
all volumes (INT ENG SND, AC FANS, PAX VOLUME, …)not yetno sound yet
MUTE TRIM WH0not yetno sound yet
MUTE FMC0not yetno sound yet
ADD LOWS0not yetno sound yet
ADD MIDS0not yetno sound yet
ADD HIGHS0not yetno sound yet