Control word (154) - mfd, Control word 2 (271/273), Control word 2 (271/273) type 2 – Honeywell MK VI User Manual

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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

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