*
Maintenance/software load enable

*
Trucks not tilted from the PSEU

*
Flight data recorder status

*
Flight data recorder maintenance status

*
Fuel lever at cutoff position

*
EEC GND test switch in ON position

*
ACE in direct mode

*
ACE power supply valid

*
Alternate pitch trim -arm active

*
Alternate pitch trim -arm down

*
Alternate pitch trim -arm up

*
Alternate pitch trim -control active

*
Alternate pitch trim -control down

*
Alternate pitch trim -control up

*
Auto speed brake switch

*
Thrust reverser interlock feedback

*
Parking brake handle

*
Parking brake valve close relay

*
Brake source pressure indication

*
APU fire alarm

*
Left engine fire alarm

*
Right engine fire alarm

*
APU bottle pressure low

*
Engine bottle pressure low

*
ASCPC L/R bleed off message

*
Cabin alert message

*
Cabin call message

*
Cabin ready message

*
Cargo call message

*
Ground call message

*
Autopilot disconnect warning battery 2

*
Girt bar armed -door X

*
Left engine start continuous ignition

*
Right engine start continuous ignition.

Training Information Point
For details of the exact interfaces between the LRUs and the IOMs, refer to the wiring diagram manual.
EFFECTIVITY BEJ ALL  31-41-00 
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D633W101-BEJ  Sep 05/2002 

777 AIRCRAFT MAINTENANCE MANUAL

AIMS -ANALOG DISCRETE INPUTS INTERFACES

EFFECTIVITY BEJ ALL  31-41-00 
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D633W101-BEJ  Jan 05/2002 

AIMS -ANALOG DISCRETES OUTPUTS INTERFACES

General
The AIMS cabinets transmit analog discretes in these three ways:
*
The analog discrete output comes from one IOM in one AIMS cabinet

*
The analog discrete comes from the outputs of two IOMs in the same AIMS cabinet. The outputs are wired together in that AIMS cabinet

*
The analog discrete comes from the outputs of two IOMs in both AIMS cabinets. The outputs are wired together in each AIMS cabinet and in the airplane wiring outside the cabinet.

The CPM/Comm also has analog discrete outputs. They are all direct outputs.
Analog Discrete Outputs
The IOMs send these analog discretes:
*
Autothrottle servo inhibit

*
Master caution lamp drive

*
VHF voice data select

*
VHF bite inhibit

*
SDU data load enable

*
Printer data load enable

*
TCAS data load enable

*
GPS data load enable

*
ASCPC engine running

*
Engine start solenoid

*
PFC disconnect

*
Radio altimeter test inhibit

*
IRS 429 bus invalid

*
WXR control on

*
TCAS RA display status.

The CPM/Comm sends these analog discretes:
*
VHF data keyline

*
Bypass switch unit bypass control.

Training Information Point
For details of the exact interfaces between the IOMs or CPMs and the LRUs, refer to the wiring diagram manual.
EFFECTIVITY BEJ ALL  31-41-00 
Page 60 
D633W101-BEJ  Sep 05/2002 

AIMS -ANALOG DISCRETES OUTPUTS INTERFACES

EFFECTIVITY BEJ ALL  31-41-00 
Page 61 
D633W101-BEJ  Jan 05/2002 

AIMS -ANALOG INTERFACES

General
The input/output modules receive analog inputs in these three ways:
*
The analog input goes to one IOM

*
The analog input goes to two IOMs in the same AIMS cabinet

*
The analog discrete input goes to two IOMs in each AIMS cabinets.

The input/output modules transmit analog outputs in these two ways:
*
One IOM supplies the analog output

*
One IOM in each AIMS cabinet supplies the analog output. The airplane wiring splices together the outputs.

Analog Inputs
The IOMs receive this analog data:
*
Total air temperature

*
Angle of attack

*
Global positioning system time mark

*
Crew oxygen pressure

*
Passenger oxygen pressure

*
Cabin pressure sensor

*
N1 Tach

*
N2 Tach

*
Engine oil quantity sense.

Analog Outputs
IOMs send analog data to the engine oil quantity sensor. The AIMS cabinet sends a 6v dc oil quantity excitation voltage to the engine oil quantity sensor unit.
　
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