Honeywell MK VI User Manual
Page 277

Honeywell
MK VI MK VIII EGPWS Installation Design Guide
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BINARY (BNR) DATA
BIT 31
BIT 30
DEFINITION
BIT 29
DEFINITION
0
0
Failure Warning
Plus, North, East,
0
1
No Computed Data (NCD)
0
Right, To, Above
1
0
Functional Test
Minus, South, West,
1
1
Normal Operation
1
Left, From, Below
BINARY CODED DECIMAL (BCD) DATA
BIT 31
BIT 30
DEFINITION
0
0
Plus, North, East, Right, To, Above
0
1
No Computed Data (NCD)
1
0
Functional Test
1
1
Minus, South, West, Left, From, Below
Unless identified as using the Honeywell Discrete definition all data indicated as ‘Discrete’ uses the following SSM
definition. (Note that PWS uses a non-standard SSM format as described in section 6.2.21)
DISCRETE DATA
BIT 31
BIT 30
DEFINITION
0
0
Normal Operation
0
1
No Computed Data NCD
1
0
Functional Test
1
1
Not Used
Data identified as Honeywell Discrete uses the SSM definition below.
HONEYWELL DISCRETE DATA
BIT 31
BIT 30
DEFINITION
0
0
Normal Operation
0
1
No Computed Data NCD
1
0
Functional Test
1
1
Failure Warning
ISO 5 ALPHABET
Some ARINC 429 labels transmit data using the ISO 5 alphabet as defined in the following table.
B4
B3 B2 B1
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
0
0
0
0
NUL
SP
0
P
MCDU
MENU
SEL1
0
0
0
1
CNTRL
DC1
!
1
A
Q
PROG
SEL2
0
0
1
0
STX
DC2
“
2
B
R
PERF
SEL3
0
0
1
1
ETX
DC3
#
3
C
S
INIT
SEL4
0
1
0
0
EOT
DC4
4
D
T
DATA
SEL5
0
1
0
1
ENQ
NAK
%
5
E
U
FPLN
SEL6
0
1
1
0
ACK
SYN
&
6
F
V
RAD
NAV
0
1
1
1
‘
7
G
W
FUEL
PRED
NEXT
PAGE
1
0
0
0
CLEAR
LOGOFF
(
8
H
X
SEL
F-PLN
SER1
1
0
0
1
EVENT
)
9
I
Y
SPARE
SER2
1
0
1
0
*
:
J
Z
SER3