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Page Title:
Initializing configuration data. |
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|  MIL-D-70789A (AR)
Flag which indicates whether valid configuration data has been
loaded for configuration code 15, with an ACCEPT CONFIGURATION
DATA command. Configuration data values are listed in APPENDIX
F.
For configuration code numbers 0 through 14, upon receipt of an
ACCEPT CONFIGURATION DATA command, the DRU shall set ALERT DATA
D5/7 (Invalid Update Request) and not use data contained in the
command.
3.5.8.9.1 Initializing configuration data. Upon turn on,
the DRU shall determine the configuration code number from the
configuration discretes on J1. For configuration codes 0 - 14
the DRU shall select and use the permanently stored configuration
data applicable to the selected COnfiguration code number. For
configuation code 15 the DRU shall select and use the
configuration data previously entered via an ACCEPT CONFIGURATION
DATA command, if the Configuration Data Present Flag is set. If
the Configuration Data Present Flag, for configuration code 15,
Set Alert bit D5/3; set STATUS bit
is reset, the DRU shall:
S1/7:reset STATUS bits S1/4, S1/5, and S2/2; and suspend Normal
Alignment. When a valid ACCEPT CONFIGURATION DATA command is
store the configuration data in program
received, the DRU shall:
alterable, non-volatile memory; set the Configuration Data
Present Flag; override Alert D5/3; and continue Normal Alignment.
The DRU shall retain and use the stored configuration data until
it is changed (3.5.8.9.2) or cleared (3.5.8.10).
3.5.8.9.2 Changing configuration data. For configuration
code 15 the DRU shall store and use new configuration data
supplied by an ACCEPT CONFIGURATION DATA command.
3.5.8.10 Clearing temporary configuration data. Upon
power-up the DRU shall clear all data loaded via an ACCEPT
CONFIGURATION DATA command and reset the Configuration Data
The DRU detects a fault condition where the
Present Flag when:
stored configuration data may have been altered; or the
configuration code number at turnon, differs from the
configuration code number present when the DRU was last shut off.
3.5.8.11 Configuration data output. Upon receipt of a
RETURN CONFIGURATION DATA command, the DRU shall return the
values of configuration data presently being used via a
CONFIGURATION DATA Message.
The DRU shall use a DRU
DRU coordinate frome code.
3.5.8.12
Coordinate Frame Code to relate the case coordinate frame to the
intermediate DRU Coordinate Frame (6.6.3.1.2). The codes are
specified in Appendix I. There shall be separate DRU Coordinate
Frame Codes for Orientation 1 and Orientation 2.
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