Control word (154) - mfd, Control word 2 (271/273), Control word 2 (271/273) type 2 – Honeywell MK VI User Manual
Page 281
Honeywell
MK VI MK VIII EGPWS Installation Design Guide
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BIT 23 (1) = TENS of the MONTH (0 or 1)
BITS 24 to 27 (4) = UNITS of the DAY (0 to 9)
BITS 28 to 29 (2) = TENS of the DAY (0 to 3)
6.2.19 Control Word (154) - MFD
CONTROL WORD – MFD
Source: MFD
LABEL (Octal) 154
Units: N/A
Max. Range: N/A
Approx. LSB: N/A
Data Bits: Discrete word, see below
+ = N/A
Sign Bit: N/A
Pad Bits: 9, 10
Transmit Interval (mSec): 50 ms
Data Type: Discrete
SDI Bits: N/A
DAU WORD BIT ASSIGNMENTS
Bit No.
DEFINITION
11 – 13
Not Used by EGPWC
14
Terrain Display Overlay Active
15 – 29
Not Used by EGPWC
6.2.20 Control Word 2 (271/273)
CONTROL WORD 2 – WXR
DISPLAY WD 1 – NAV DISPLAY BUS
Source: WXR Control Panel/Nav Display
LABEL (Octal) 271
For FDS-255 display the label is 273.
Units: N/A
Max. Range: N/A
Approx. LSB: N/A
Data Bits: Discrete word, see below
+ = N/A
Sign Bit: N/A
Pad Bits: 9, 10
Transmit Interval (mSec): 100 to 120 ms
Data Type: Discrete
SDI Bits: N/A
CONTROL WORD 2 BIT ASSIGNMENTS
Bit No.
DEFINITION
11
Special Function, Not Used by EGPWC
12
Anticlutter, Not Used by EGPWC
13
Windshear, Not Used by EGPWC
14 – 23
Spares
24 – 29
Display Range as specified in the table below
BITS 24 to 29 = Display Range (5 to 320NM, format as follows)
Bit 29
Bit 28
Bit 27
Bit 26
Bit 25
Bit 24
RANGE
0
0
0
0
0
0
320 NM
0
0
0
0
0
1
5 NM
0
0
0
0
1
0
10 NM
0
0
0
1
0
0
20 NM
0
0
1
0
0
0
40 NM
0
1
0
0
0
0
80 NM
1
0
0
0
0
0
160 NM
Note: The range bits are additive; e.g., if bits 24 and 26 = 1 then the range would be 25 NM.
6.2.20.1
Control Word 2 (271/273) Type 2
CONTROL WORD 2 – WXR (Type 2)
DISPLAY WD 1 – NAV DISPLAY BUS
Source: IOC Bus
LABEL (Octal) 271
For FDS-255 display the label is 273.
Units: N/A
Max. Range: N/A
Approx. LSB: N/A
Data Bits: Discrete word, see below
+ = N/A
Sign Bit: N/A
Pad Bits: 9, 10
Transmit Interval (mSec): 100 ms
Data Type: Discrete
SDI Bits: N/A