For aerosoft a320, this is the Lvars list I can find,
Overhead Anti-Ice
AB_OVH_ANTIICE_WING Overhead, Anti Ice Wing 1 = on, 0 = off read/write
AB_OVH_ANTIICE_ENGL Overhead, Anti Ice engine left 1 = on, 0 = off read/write
AB_OVH_ANTIICE_ENGR Overhead, Anti Ice engine right 1 = on, 0 = off read/write
AB_OVH_ANTIICE_PROBEWINDOW Overhead, Anti Ice probes + Windows 1 = on, 0 = off read/write
Overhead Lights
Strobe_light Overhead, strobe lights 2 = on, 1 = auto, 0 = off read/write
AB_OVH_LIGHTS_BEACON Overhead, beacon lights 1 = on, 0 = off read/write Use K:VAR to toggle
AB_OVH_LIGHTS_WING Overhead, wing lights 1 = on, 0 = off read/write Use K:VAR to toggle
AB_OVH_LIGHTS_NAVLOGO Overhead, Navigation lights 1 = on, 0 = off read/write Use K:VAR to toggle
AB_OVH_LIGHTS_RWYTURNOFF Overhead, runway turnoff lights 1 = on, 0 = off read/write
Landlight_switch Overhead, Landing lights 2 = on, 1 = off , 0 = retracted read/write Use together with K:VAR to toggle
AB_TAXI_LT Overhead, taxiway lights 2 = TO, 1 = Taxi , 0 = off read/write
AB_PANEL_LIGHT Overhead, panel lights 1 = on, 0 = off read/write
AB_DOME_LIGHT Overhead, dome lights 1 = on, 0 = off read/write
AB_OVH_LIGHTS_ANN_TEST Overhead, all light on test test, (brt), dim read/write Toggles all annuciator light to on
Overhead APU
AB_OVH_APU_MASTER Overhead, APU Master Switch 1 = on, 0 = off read/write
AB_OVH_APU_START Overhead, APU Start Switch 1 = on, 0 = off read/write
Overhead Signs
AB_OVH_SEATBELT Overhead, Seatbelts switch 50 = on, 25 = auto, 0 = off read/write
AB_OVH_NO_SMOKING Overhead, No Smoking Switch 50 = on, 25 = auto, 0 = off read/write
AB_OVH_EMER_LT Overhead, Emercency Lights Switch 50 = on, 25 = arm, 0 = off read/write
Overhead Pneumatics
AB_OVH_PNEUBLEEDL Overhead, Pneumatic Bleed Left 1 = on, 0 = off read/write
AB_OVH_PNEUBLEEDR Overhead, Pneumatic Bleed Right 1 = on, 0 = off read/write
AB_OVH_PNEUBLEEDAPU Overhead, Pneumatic Bleed APU 1 = on, 0 = off read/write
AB_OVH_PNEUPACKL Overhead, Pneumatic Pack Left 1 = on, 0 = off read/write
AB_OVH_PNEUPACKR Overhead, Pneumatic Pack Right 1 = on, 0 = off read/write
AB_OVH_PNEUXBLEED Overhead, Pneumatic Cross Bleed 2 = on, 1 = auto, 0 = off read/write
AB_OVH_PACKFLOWCTR Overhead, Pack Flow Control 2 = HI, 1 = Normal, 0 = LO read/write
AB_OVH_HOTAIR Overhead, Hot Air Control 1 = on, 0 = off read/write
AB_OVH_ZONETEMP1 Overhead, Zone Temperature 1 Range Knob, 20.25 (cold) - 29.75 (hot) read/write
AB_OVH_ZONETEMP2 Overhead, Zone Temperature 2 Range Knob, 20.25 (cold) - 29.75 (hot) read/write
AB_OVH_ZONETEMP3 Overhead, Zone Temperature 3 Range Knob, 20.25 (cold) - 29.75 (hot) read/write
Overhead Hydraulic
AB_OVH_HYDL Overhead, Hydraulic 1 = on, 0 = off read/write
AB_OVH_HYDR Overhead, Hydraulic 1 = on, 0 = off read/write
AB_OVH_HYDELEC1 Overhead, Hydraulic Electric Pump 1 1 = on, 0 = off read/write
AB_OVH_HYDELEC2 Overhead, Hydraulic Electric Pump 2 1 = on, 0 = off read/write
AB_OVH_HYDPTU Overhead, Hydraulic Power Transfer Unit 1 = on, 0 = off read/write
AB_OVH_HYDELEC1_COVER Overhead, Hydraulic Electric Pump 1 Cover 0 = closed, 1 = opened read/write
Overhead Fuel
AB_OVH_FUELPL1 Overhead, Fuel Pump Left 1 1 = on, 0 = off read/write
AB_OVH_FUELPL2 Overhead, Fuel Pump Left 2 1 = on, 0 = off read/write
AB_OVH_FUELPR1 Overhead, Fuel Pump Right 1 1 = on, 0 = off read/write
AB_OVH_FUELPR2 Overhead, Fuel Pump Right 2 1 = on, 0 = off read/write
AB_OVH_FUELPCL Overhead, Fuel Pump Center 1 1 = on, 0 = off read/write
AB_OVH_FUELPCR Overhead, Fuel Pump Center 2 1 = on, 0 = off read/write
AB_OVH_FUELXF Overhead, Fuel Cross Feed 1 = on, 0 = off read/write
AB_OVH_FUELMODE Overhead, Fuel Mode Selector 1 = on, 0 = off read/write
Overhead Electrics
AB_OVH_ELECBAT1 Overhead, Electric Battery 1 1 = on, 0 = off read/write
AB_OVH_ELECBAT2 Overhead, Electric Battery 2 1 = on, 0 = off read/write
AB_OVH_ELECGENL Overhead, Electric Engine Generator Connect Left 1 = on, 0 = off read/write
AB_OVH_ELECGENR Overhead, Electric Engine Generator Connect Right 1 = on, 0 = off read/write
AB_OVH_ELECGENAPU Overhead, Electric APU Generator Connect 1 = on, 0 = off read/write
AB_OVH_ELECEXT Overhead, Electric External Power Connect 1 = on, 0 = off read/write
AB_OVH_ELECBT Overhead, Electric Bus Tie 1 = on, 0 = off read/write
AB_OVH_IDG1 Overhead, Electric 1 = on, 0 = off read/write Not used now
AB_OVH_IDG2 Overhead, Electric 1 = on, 0 = off read/write Not used now
AB_OVH_IDG1_COVER Overhead, Electric 0 = closed, 1 = opened read/write Not used now
AB_OVH_IDG2_COVER Overhead, Electric 0 = closed, 1 = opened read/write Not used now
AB_OVH_AC_ESS_FEED Overhead, Electric AC Essential Bus Selector 1 = on, 0 = off read/write
Overhead wipers
AB_OVH_WIPERL_KNOB Overhead, Windshield Wipers Left 50 = fast, 25 = slow, 0 = off read/write
AB_OVH_WIPERR_KNOB Overhead, Windshield Wipers Right 50 = fast, 25 = slow, 0 = off read/write
Overhead ADIRS control
AB_OVH_ADR1 Overhead, ADIRS 1 Air Data Disconnect 1 = on, 0 = off read/write
AB_OVH_ADR2 Overhead, ADIRS 2 Air Data Disconnect 1 = on, 0 = off read/write
AB_OVH_ADR3 Overhead, ADIRS 3 Air Data Disconnect 1 = on, 0 = off read/write
AB_OVH_IRS1_KNOB Overhead, ADIRS 1 Mode Selector 2 = OFF, 1 = NAV, 0 = ATT read/write
AB_OVH_IRS2_KNOB Overhead, ADIRS 2 Mode Selector 2 = OFF, 1 = NAV, 0 = ATT read/write
AB_OVH_IRS3_KNOB Overhead, ADIRS 3 Mode Selector 2 = OFF, 1 = NAV, 0 = ATT read/write
AB_OVH_IRS1_BUT Overhead, ADIRS 1 Inertial Data Output Disconnect 1 = on, 0 = off read/write
AB_OVH_IRS2_BUT Overhead, ADIRS 2 Inertial Data Output Disconnect 1 = on, 0 = off read/write
AB_OVH_IRS3_BUT Overhead, ADIRS 3 Inertial Data Output Disconnect 1 = on, 0 = off read/write
FCU/Glareshield Buttons
AB_AP_AP1 Glareshield, AP1 Button 1 = on, 0 = off read/write
AB_AP_AP2 Glareshield, AP2 Button 1 = on, 0 = off read/write
AB_AP_LOC Glareshield, LOC Button 1 = on, 0 = off read/write
AB_AP_LOC2 Glareshield, APP Button 1 = on, 0 = off read/write
AB_AP_ATHR Glareshield, ATHR Button 1 = on, 0 = off read/write
AB_AP_VSlevel Glareshield, VS Knob 1 = push, -1 = pull read/write
AB_AP_HDGmode Glareshield, HDG Knob 1 = push, -1 = pull read/write
AB_AP_SPDmode Glareshield, SPD Knob 1 = push, -1 = pull read/write
AB_AP_ALTmode Glareshield, ALT Knob 1 = push, -1 = pull read/write
AB_AP_SPDMACH Glareshield, SPD/MACH button 1 = MACH, 0 = SPD read/write
AB_AP_HDGTRK Glareshield, HDGVS/TRKFPA button 1 = TRK/FPA, 0 = HDG/SPD read/write
Autopilot_TRK_set Glareshield, Track Value Set 0-360 Range read/write
AB_AP_HDG_Select Glareshield, Heading Value Set 0-360 Range read/write
AB_AP_SPEED_Select Glareshield, Speed Value Set VLS-VMO/MMO Range read/write
AB_AP_Mach_Select Glareshield, Mach Value Set VLS-VMO/MMO Range read/write
AB_AP_FPA_Select2 Glareshield, FPA Value Set 9.9 to -9.9 Range read/write
AB_AP_VS_Select2 Glareshield, VS Value Set 60 to -60 range, 2 for 200 fpm, -60 for -6000 fpm read/write
AB_AP_ALT_Select Glareshield, ALT Select 00100 - 41000 Range read/write
AB_MPL_FD Glareshield, FD Button 1 = 1FD2 On, 0 = FD off read/write
AB_MPL_ILS Glareshield, LS Button 1 = LS On, 0 = LS off read/write
AB_MPL_ND_CSTR Glareshield, ND Display Option CSTR 1 = on, 0 = off read/write
NOTE: When switching from one more to another, 0 the other modes.
AB_MPL_ND_WPT Glareshield, ND Display Option WPT 1 = on, 0 = off read/write
AB_MPL_ND_VOR Glareshield, ND Display Option VOR 1 = on, 0 = off read/write
AB_MPL_ND_NDB Glareshield, ND Display Option NDB 1 = on, 0 = off read/write
AB_MPL_ND_ARPT Glareshield, ND Display Option APRT 1 = on, 0 = off read/write
AB_MPL_ND_Mode Glareshield, ND Mode Knob 0 = LS, 1 = VOR, 2 = NAV, 3 = ARC, 4 = PLAN read/write
AB_MPL_ND_Range Glareshield, ND Range Knob 0 = 10, 1 = 20, 2 = 40, 3 = 80, 4 = 160, 5 = 320 read/write
Autobrake_position Glareshield, AutoBrake Set 0 = MAX, 1 = off, 2 = LO, 3 = MED read/write
AB_BRK_FAN Glareshield, Brake Fan 1 = on, 0 = off read/write
AB_MPL_Baro_Unit, number Glareshield, inHg/hPa 0 = hPa, 1 = inHg read/write
AB_MPL_Baro_STD, number Glareshield, Pull STD 1 = pulled -> set 16208 (K:KOHLSMAN_SET) read/write
AB_MPL_ND_Arrow1 Glareshield, ADF/VOR 1 Switch 0=VOR, 1=OFF, 2=ADF read/write
AB_MPL_ND_Arrow2 Glareshield, ADF/VOR 2 Switch 0=VOR, 1=OFF, 2=ADF read/write
AB_AP_SPDmode_set Glareshield, 0 = dashed (---) shown read/write
AB_AP_HDGmode_setDisp Glareshield, 0 = dashed (---) shown read/write
AB_AP_KNOBALT Glareshield, 1 = dashed (---) shown read/write
AP_AP_ALT_Mode Glareshield, 1 == dot shown read/write
FMA Mode
FMA_THRmode FMA Throttle Mode Annuciator
0 == BLANK 1 == THR IDLE
2 == THR LVR
3 == THR CLB
4 == SPEED
5 == MACH
6 == MAN MCT
7 == MAN FLX
8 == MAN TOGA
9 == A.FLOOR
9.5 == TOGA LK
10 == SPEED
Read only
FMA_Vertmode_act FMA Vertical Mode Annuciator
0 == BLANK
1 == SRS
2 == CLB
2.5 == OP CLB
3 == DES
3.5 == OP DES
4 == VS
4.5 == FPA
5 == ALT
5.25 == ALT CSTR
5.5 == ALT*
6 == ALT CRZ
6.5 == G/S *
7 == G/S
8 == LAND
8.5 == FINAL APP
9 == FLARE
10 == ROLL OUT
Read only
FMA_Latmode_act FMA Lateral Mode Annuciator
0 == BLANK
1 == RWY
2 == RWY TRK
2.5 == GA TRK
3 == HDG
3.5 == TRK
4 == NAV
4.5 == LOC*
4.75 == APP NAV
5 == LOC
Read only
MCDU
MCDU_Cruisealt MCDU, Current Cruise Altitude Read only
MCDU_Trans_alt MCDU, Transition Altitude Read only Currently only TA available
AB_AP_MCDU_RWYALT MCDU, Arrival Airport Altitude Read only
MCDU_V1 MCDU, V1 Speed Read only
MCDU_VR MCDU, Vr Speed Read only
MCDU_FLAPS MCDU, Flaps Take-Off Setting Read only
MCDU_TOD_DIST MCDU, Take Off Distance Read only
MCDU_APP_VAPP MCDU, VREF Read only
Diverse
AB_SECURITYSCREEN_SWITCH Diverse, Security display Switch 1 = on, 0 = off read/write
AB_DOORMAIN1 Diverse, Front Left Cabin Door 0-100% read/write
AB_DOORMAIN2 Diverse, Front Right Cabin Door 0-100% read/write
AB_DOORMAIN3 Diverse, Aft Left Cabin door 0-100% read/write
AB_DOORMAIN4 Diverse, Aft Right Cabin door 0-100% read/write
AB_DOORCARGO1 Diverse, Front Cargo Door 0-100% read/write
AB_DOORCARGO2 Diverse, Aft Cargo Door 0-100% read/write
AB_DOORAPU Diverse, APU Door 0-100% read/write
MCDU Keys
MCDU_LSK1L Left MCDU, Line select key, 1L 1 = on, 0 = off (resets to 0) Write only
MCDU_LSK2L Left MCDU, Line select key, 2L 1 = on, 0 = off (resets to 0) Write only
MCDU_LSK3L Left MCDU, Line select key, 3L 1 = on, 0 = off (resets to 0) Write only
MCDU_LSK4L Left MCDU, Line select key, 4L 1 = on, 0 = off (resets to 0) Write only
MCDU_LSK5L Left MCDU, Line select key, 5L 1 = on, 0 = off (resets to 0) Write only
MCDU_LSK6L Left MCDU, Line select key, 6L 1 = on, 0 = off (resets to 0) Write only
MCDU_LSK1R Left MCDU, Line select key, 1R 1 = on, 0 = off (resets to 0) Write only
MCDU_LSK2R Left MCDU, Line select key, 2R 1 = on, 0 = off (resets to 0) Write only
MCDU_LSK3R Left MCDU, Line select key, 3R 1 = on, 0 = off (resets to 0) Write only
MCDU_LSK4R Left MCDU, Line select key, 4R 1 = on, 0 = off (resets to 0) Write only
MCDU_LSK5R Left MCDU, Line select key, 5R 1 = on, 0 = off (resets to 0) Write only
MCDU_LSK6R Left MCDU, Line select key, 6R 1 = on, 0 = off (resets to 0) Write only
MCDU_A Left MCDU, Key, A 1 = on, 0 = off (resets to 0) Write only
MCDU_B Left MCDU, Key, B 1 = on, 0 = off (resets to 0) Write only
MCDU_C Left MCDU, Key, C 1 = on, 0 = off (resets to 0) Write only
MCDU_D Left MCDU, Key, D 1 = on, 0 = off (resets to 0) Write only
MCDU_E Left MCDU, Key, E 1 = on, 0 = off (resets to 0) Write only
MCDU_F Left MCDU, Key, F 1 = on, 0 = off (resets to 0) Write only
MCDU_G Left MCDU, Key, G 1 = on, 0 = off (resets to 0) Write only
MCDU_H Left MCDU, Key, H 1 = on, 0 = off (resets to 0) Write only
MCDU_I Left MCDU, Key, I 1 = on, 0 = off (resets to 0) Write only
MCDU_J Left MCDU, Key, J 1 = on, 0 = off (resets to 0) Write only
MCDU_K Left MCDU, Key, K 1 = on, 0 = off (resets to 0) Write only
MCDU_L Left MCDU, Key, L 1 = on, 0 = off (resets to 0) Write only
MCDU_M Left MCDU, Key, M 1 = on, 0 = off (resets to 0) Write only
MCDU_N Left MCDU, Key, N 1 = on, 0 = off (resets to 0) Write only
MCDU_O Left MCDU, Key, O 1 = on, 0 = off (resets to 0) Write only
MCDU_P Left MCDU, Key, P 1 = on, 0 = off (resets to 0) Write only
MCDU_Q Left MCDU, Key, Q 1 = on, 0 = off (resets to 0) Write only
MCDU_R Left MCDU, Key, R 1 = on, 0 = off (resets to 0) Write only
MCDU_S Left MCDU, Key, S 1 = on, 0 = off (resets to 0) Write only
MCDU_T Left MCDU, Key, T 1 = on, 0 = off (resets to 0) Write only
MCDU_U Left MCDU, Key, U 1 = on, 0 = off (resets to 0) Write only
MCDU_V Left MCDU, Key, V 1 = on, 0 = off (resets to 0) Write only
MCDU_W Left MCDU, Key, W 1 = on, 0 = off (resets to 0) Write only
MCDU_X Left MCDU, Key, X 1 = on, 0 = off (resets to 0) Write only
MCDU_Y Left MCDU, Key, Y 1 = on, 0 = off (resets to 0) Write only
MCDU_Z Left MCDU, Key, Z 1 = on, 0 = off (resets to 0) Write only
MCDU_1 Left MCDU, Key, 1 1 = on, 0 = off (resets to 0) Write only
MCDU_2 Left MCDU, Key, 2 1 = on, 0 = off (resets to 0) Write only
MCDU_3 Left MCDU, Key, 3 1 = on, 0 = off (resets to 0) Write only
MCDU_4 Left MCDU, Key, 4 1 = on, 0 = off (resets to 0) Write only
MCDU_5 Left MCDU, Key, 5 1 = on, 0 = off (resets to 0) Write only
MCDU_6 Left MCDU, Key, 6 1 = on, 0 = off (resets to 0) Write only
MCDU_7 Left MCDU, Key, 7 1 = on, 0 = off (resets to 0) Write only
MCDU_8 Left MCDU, Key, 8 1 = on, 0 = off (resets to 0) Write only
MCDU_9 Left MCDU, Key, 9 1 = on, 0 = off (resets to 0) Write only
MCDU_0 Left MCDU, Key, 0 1 = on, 0 = off (resets to 0) Write only
MCDU_SL Left MCDU, Key, Slash 1 = on, 0 = off (resets to 0) Write only
MCDU_SP Left MCDU, Key, Space 1 = on, 0 = off (resets to 0) Write only
MCDU_CLR Left MCDU, Key, Clear 1 = on, 0 = off (resets to 0) Write only
MCDU_SGN Left MCDU, Key, +/- 1 = on, 0 = off (resets to 0) Write only
MCDU_ST Left MCDU, Key, dot 1 = on, 0 = off (resets to 0) Write only
MCDU1_DIR_key Left MCDU, Key, DIR 1 = on, 0 = off (resets to 0) Write only
MCDU1_PROG_key Left MCDU, Key, PROG 1 = on, 0 = off (resets to 0) Write only
MCDU1_PERF_key Left MCDU, Key, PERF 1 = on, 0 = off (resets to 0) Write only
MCDU1_INIT_key Left MCDU, Key, INIT 1 = on, 0 = off (resets to 0) Write only
MCDU1_DATA_key Left MCDU, Key, DATA 1 = on, 0 = off (resets to 0) Write only
MCDU1_FPLN_key Left MCDU, Key, F-PLN 1 = on, 0 = off (resets to 0) Write only
MCDU1_RAD_key Left MCDU, Key, RAD NAV 1 = on, 0 = off (resets to 0) Write only
MCDU1_FUEL_key Left MCDU, Key, FUEL PRED 1 = on, 0 = off (resets to 0) Write only
MCDU1_SPLN_key Left MCDU, Key, SEC F-PLN 1 = on, 0 = off (resets to 0) Write only
MCDU1_ATC_key Left MCDU, Key, ATC COM 1 = on, 0 = off (resets to 0) Write only
MCDU1_MENU_key Left MCDU, Key, MCDU MENU 1 = on, 0 = off (resets to 0) Write only
MCDU1_ARPRT_key Left MCDU, Key, AIRPORT 1 = on, 0 = off (resets to 0) Write only
MCDU_ARROWLeft Left MCDU, Key, ARROW LEFT 1 = on, 0 = off (resets to 0) Write only
MCDU_ARROWRight Left MCDU, Key, ARROW RIGHT 1 = on, 0 = off (resets to 0) Write only
MCDU_ARROWUp Left MCDU, Key, ARROW UP 1 = on, 0 = off (resets to 0) Write only
MCDU_ARROWDn Left MCDU, Key, ARROW DOWN 1 = on, 0 = off (resets to 0) Write only
MCDU_OVFLY Left MCDU, Key, OVERFLY 1 = on, 0 = off (resets to 0) Write only
MCDU_BRT Left MCDU, Key, BRIGHT 1 = on, 0 = off (resets to 0) Write only
MCDU_DIM Left MCDU, Key, DIMMER 1 = on, 0 = off (resets to 0) Write only
MCDU_KBD Left MCDU, Key, ACTIVATES KEYBOARD INPUT 1 = on, 0 = off (resets to 0) Write only
MCDU_TOGGLE Left MCDU, Key, OPENS 2D MCDU 1 = on, 0 = off (resets to 0) Write only
Note that MCDU 1 is the left one, the same LVARS are available for the right MCDU (MCDU2_xxx) but this one is only used for non standard functions)
ECAM Buttons
ECAM_Mode ECAM buttons
ENG = 1
BLEED = 2
PRESS = 3
ELEC = 4
HYD = 5
FUEL = 6
APU = 7
COND = 8
DOOR = 9
WHEEL = 10
FCTL = 11
CRUISE = 14
Write only
AB_ECAM_Toconf TO CONF 1 = on, 0 = off (resets to 0) Write only