777 AMM 飞机维护手册 指示和记录系统 1(40)

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Operation Program Configuration Files
The OPCs set the configuration of the airplane. The OPCs replace hardware program pins used on older model airplanes. There is only one OPC part number for the cabinet. This one part number includes the OPCs for several avionic functions.
The OPCs are in flash memory.
Training Information Point
There is only one OPC software part number for the cabinet. When you remove and replace one LRM, you can load the OPC into that LRM. When you load the OPC into the LRM, it will do a check to make sure it is the same OPC software that is in the other LRMs in the cabinet. This is to make sure that you can not load an OPC with a different part number into any LRM.
If the OPC software part number changes, you need to load the new OPC into all the LRMs in the cabinet. During a data load, you will get a dialog box that shows that the software is incompatible with the old OPC part number in the other LRMs. You can override and force the software to load into the LRM.
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AIMS -SOFTWARE FUNCTIONAL DESCRIPTION

Airline Modifiable Information
The AMIs set the configuration of the airplane. This software, developed with the ground based software tool, gives the airlines more flexibility to define their configuration. Several avionic functions have an AMI. There is a separate software part number for each AMI.
The AMIs are in flash memory.
Database
There is one database for AIMS, the navigation database. The flight management computing function uses this database. There is only one part number for this database.
The database is in flash memory.
BITE History Data
Each LRM stores BITE history in EEPROM. EEPROM is nonvolatile memory. If you remove the LRM this BITE history is saved.
Run-Time Data
The run-time data is data that is generated by the operation of the cabinet. This run-time data is in SRAM. If you remove the module you will lose this data.
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The hot battery bus power holds the data in SRAM, so that when you power down the airplane you do not lose this data.
Training Information Point
If you remove the LRM or if you remove the battery without primary power, you lose this run time data. Specific data that you lose includes:
*
ACMF report data stored in the ACMF CCA

*
Fault history data collected by the CMCF.

LRMs software
This is the software loaded into the CPM/Comm:
*
CPM/Comm OPS (includes core software and DCGF, CMCF, DCMF, DFDAF, FDCF, QARF)

*
AIMS OPC

*
AMI for CMCF

*
AMI for DCMF

*
AMI for FDCF.

This is the software loaded into the CPM/ACMF:
*
CPM/ACMF OPS (includes core software and DCGF, ACMF, FMCF, TMCF, and performance database)

*
AIMS OPC

*
AMI for FMCF

*
AMI for ACMF

*
Nav database.

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AIMS -SOFTWARE FUNCTIONAL DESCRIPTION

This is the software loaded into the CPM/Basic:
*
CPM/Basic OPS (includes core software and DCGF, FMCF, TMCF, and performance database.)

*
AIMS OPC

*
AMI for FMCF

*
Nav database.

This is the software loaded into the CPM/GGs:
*
CPM/GG OPS (includes core software, DCGF and PDF)

*
AMI for PDF

*
AIMS OPC.

The software loaded into the IOMs is IOM OPS (includes core software).
Training Information Point
The status message AIMS shows when there is a difference between the OPCs or program pins of the left and right AIMS cabinets. This is monitored at power up or when this software is loaded.
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777 AIRCRAFT MAINTENANCE MANUAL

AIMS -SOFTWARE FUNCTIONAL DESCRIPTION

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777 AIRCRAFT MAINTENANCE MANUAL

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AIMS -DATA CONVERSION GATEWAY FUNCTION FUNCTIONAL DESCRIPTION

General
The data conversion gateway function (DCGF) has these five primary purposes:
*
Transfer data between the flight control ARINC 629 buses and analog, analog discrete and ARINC 429 buses

*
Transfer data between the systems ARINC 629 buses and analog, analog discrete and ARINC 429 buses

*
Transfer data between the systems ARINC 629 buses and the flight control ARINC 629 buses

*
Isolate transfer of engine data between the flight control ARINC 629 buses and the systems ARINC 629 buses
　
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