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* TFC selected
* Center display format
* Baro minimums aural enable
* VOR left selected
* VOR right selected
* ADF left selected
* ADF right selected
CDS - NAVIGATION INTERFACES - 2
EFFECTIVITY
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* Heading up map format
* Airports selected
* Route data selected
* Waypoints selected
* Navaid data selected
* Position data selected
* PFD/ND display format
* Plan mode selected
* Approach mode selected
* VOR mode selected
* Map mode selected.
The CDS EFIS CP modes 2 discrete word has this data:
* Baro minimums selected
* RA health
* GPWC V1 callout enable (optional)
* FPV selected
* Meters selected
* STD selected
* HPA selected
* HG selected
* Terrain selected
* WXR selected.
The GPWC sends system status, caution and warning data on
an ARINC 429 GPWC data bus to the DEUs. The DEUs show the
system status, caution or warnings on the DUs.
The GPWC bus has this data:
* Ground proximity discrete word 2
* Fault summary word 2
* Input discrete word 2.
The ground proximity discrete word 2 has this data:
* Terrain unavailable (position)
* Terrain status fail
* Terrain caution
* Terrain warning
* Windshear caution
* Windshear warning
* Ground proximity warning.
The fault summary word 2 has this data:
* Terrain relay 1 fail
* Terrain relay 2 fail.
The input discrete word 2 has terrain override data.
The GPWC also sends terrain display data on ARINC 453 data
buses to the DEUs through the terrain/weather relays. These
relays are controlled by the TERR select switches on the EFIS
control panels or the pop up function within the GPWC.
CDS - NAVIGATION INTERFACES - 2
EFFECTIVITY
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CDS - NAVIGATION INTERFACES - 2
CDS - NAVIGATION INTERFACES - 2
EFFECTIVITY
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D633A101-SHZ1 Jun 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
31-62-00-107
Flight Management Computer System
The flight management computer system (FMCS) sends data to
and receives data from the display electronic units (DEU) on
ARINC 429 buses. FMC output buses 01 and 02 go through FMC
transfer relay 1. FMC output buses 08 and 09 go directly to both
DEUs.
The DEUs send data to the flight management computer (FMC)
on the DEU-FMC bus. The DEU-FMC bus has this data:
* CDS EFIS CP modes 1 discrete word
* CDS EFIS CP modes 2 discrete word
* CP and DU maint word
* BITE response data.
The CDS EFIS CP modes 1 discrete word has this data:
* TFC selected
* Center display format
* Baro minimums aural enable
* VOR left selected
* VOR right selected
* ADF left selected
* ADF right selected
* Heading up map format
* Airports selected
* Route data selected
* Waypoints selected
* Navaid data selected
* Position data selected
* PFD/ND display format
* Plan mode selected
* Approach mode selected
* VOR mode selected
* Map mode selected.
The CDS EFIS CP modes 2 discrete word has this data:
* Baro minimums selected
* RA health
* GPWC V1 callout enable (optional)
* FPV selected
* Meters selected
* STD selected
* HPA selected
* HG selected
* Terrain selected
* WXR selected.
The CP and DU maint word has this data:
* TCAS RA status
* TCAS system status.
The FMCS uses this data to format the MAP and PLAN display
data that will be transmitted to the DEUs.
The BITE response data is for these other airplane systems:
* DEUs
* Main engine electronic controls (EEC)
* APU electronic control unit (ECU).
CDS - NAVIGATION INTERFACES - 3
EFFECTIVITY
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D633A101-SHZ1 Jun 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
31-62-00-108
The FMCS sends data to the DEUs on four ARINC 429 data
buses. These buses are:
* FMC 01
* FMC 02
* FMC 08
* FMC 09.
FMC 01 and FMC 02 data goes through the FMC transfer relay 1
　
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