0x2a OBC Status

Cluster 0x80 → Displays 0xe7.

This command reports the status of various functions controlled by the cluster.

Examples

80 05 E7 2A 00 00 48
80 05 E7 2A 00 08 40
80 05 E7 2A 02 00 4A
80 05 E7 2A 08 00 40
80 05 E7 2A 20 00 68

Properties

Fixed length. Two byte bitfield.

Byte 1 contains one single-bit field followed by three two-bit state fields. The known states are 0 for inactive and 1 for active. The use of states 2 and 3, and the function of bit 0, are not yet identified.

# Byte 1
LIMIT           = 0b0000_0010
LIMIT_WARNING   = 0b0000_0100
TIMER           = 0b0000_1000
MEMO            = 0b0010_0000

# Byte 2
CODE            = 0b0100_0000
AUX_HEATING     = 0b0010_0000
AUX_TIMER_2     = 0b0001_0000
AUX_VENTILATION = 0b0000_1000
AUX_TIMER_1     = 0b0000_0100

Use Cases

Settings

Memo 0b0010_0000 << 8

Memo: On

MEMO_OFF    = 0
MEMO_ON     = 1

80 05 E7 2A 20 00 68    # Memo: On

When memo is on 1, an icon will be displayed in the navigation status bar as pictured above. The Memo option in Settings will be set to on.

On-board Computer (OBC)

Timer 0b0000_1000 << 8

TIMER_STOPPED   = 0
TIMER_RUNNING   = 1

80 05 E7 2A 08 00 40    # Timer: On

Limit 0b0000_0010 << 8

OBC Limit: Enabled

LIMIT_DISABLED  = 0
LIMIT_ENABLED   = 1

80 05 E7 2A 02 00 4A    # Limit: On

Limit Warning 0b0000_0100 << 8

LIMIT_WARNING  = 0
LIMIT_WARNING   = 1

80 05 E7 2A 06 00 4E    # Limit: On, Warning: On ---

Independent Ventilation and Heating

Aux Timers, and Direct Operation

In addition to the UI, an indicator lamp on BMBT is activated, as discussed in the owner’s manual.

Aux. Indicator Lamp

Aux. Timer 1 0b0000_0100 << 0

AUX_TIMER_1_ON  = 1
AUX_TIMER_1_OFF = 0

80 05 E7 2A 00 04 4C    # Aux. Timer 1: Enabled

Aux. Timer 2 0b0001_0000 << 0

AUX_TIMER_2_ON  = 1
AUX_TIMER_2_OFF = 0

80 05 E7 2A 00 10 58    # Aux. Timer 2: Enabled

Aux. Heating 0b0010_0000 << 0

AUX_HEATING_ON  = 1
AUX_HEATING_OFF = 0

80 05 E7 2A 00 20 68    # Aux. Heating: On

Aux. Ventilation 0b0000_1000 << 0

AUX_VENTILATION_ON  = 1
AUX_VENTILATION_OFF = 0

80 05 E7 2A 00 08 40    # Aux. Ventilation: On

Code 0b0100_0000 << 0

Code: Enabled

CODE_LOCKED     = 1
CODE_UNLOCKED   = 0

80 05 E7 2A 00 40 08    # Code: Locked

This is the crux of the code function. When enabled 1, the nav. is effectively “locked” with only the option to input a code.

When the correct code is entered, this is disabled 0, thus “unlocking” the nav.