Honeywell SPZ-8000 - ARINC 429 IRU Discrete Word (Octal Label 270)

BIT(S)
FUNCTION
O STATE 1 STATE
o-7
Label bits
.-
--
8
Source destination identifier
Open
(SDI) #2
Gnd
9 SDI #1
Open
Gnd
10
Align mode
Not align mode
Align
mode
11
Attitude
mode
Not attitude
mode
Attitude
mode
12
NAV mode
Not
NAV mode
NAV mode
13
Set heading
Not set heading Set heading
14
Attitude invalid (IRU FAULT
Attitude valid
Attitude not valid
annunciator on)
15
BATT fail
Not BATT fail
BATT fail
16
ON BATT
Not ON BATT
ON BATT
17
Air data input invalid
Air data valid
Air data invalid
18
IRU
fault (BITE)
Not IRU fault
IRU fault
19
BATT fail (ON BATT)
Not BATT fail BATT fail
20
Alignment fault
hb~l~lignment
Alignment fault
21
No initialization
Initialized
Not initialized
22
Excessive motion (Align mode)
No40i~~cessive Excessive motion
23
Air data computer (ADC)
or
t’4g’41$DCor IRU ADC or IRU fault
IRU fault
24
Not used
25-27 Time
to NAV RDY:
BITS
Minutes
25X27
10-6
111
6-5
p;
5-4
4-3
001
;-:
110
;;:
1:0
NAV RDY
000
28
Not used
--
--
29-30 SSM
--
--
31
Parity, odd
--
●
--
I
ARINC 429 IRU Discrete Word (Octal Label 270)
Table 2-10
22-14-00
Page 128.1
Apr 15/93
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