Caravan Control Unit Operating Mode, Function - GF54.21-D-5048TSA
Model 447
with code JA3 (Intelligent body control.)
with code XM7 (MOPF II)
Model 907, 910
with code JA3 (Intelligent body control.)
General
The MB Advanced Control, control unit (N175) consists of two stages, MBAC Stage I and MBAC Stage II.
The MBAC has the following operating modes:
- "External voltage"
- "Body's own voltage"
- "ECO external voltage"
- "ECO body's own voltage"
- "Undervoltage"
- OFF
Bodybuilder manufacturer (ABH)
Mercedes-Benz Advanced Control (MBAC)
High speed video link (HSVL)
Cross-functional requirements
At any given point, the MBAC is in one of the listed operating modes (OFF, "Undervoltage", "ECO body's own voltage", "ECO external voltage", "Body's own voltage" or "External voltage").
The MBAC is independent of the starter battery.
If the MBAC is disconnected from the secondary battery, the MBAC switches to operating mode OFF.
"External voltage" operating mode
In the "External voltage" operating mode, the current requirement of the MBAC is less than 5 A.
When MBAC Stage II changes to the "External voltage" operating mode and the PC of MBAC Stage II is deactivated, MBAC Stage II activates the PC.
If MBAC Stage II changes to the "External voltage" operating mode and at least one Ethernet interface of MBAC Stage II is deactivated, MBAC Stage II activates each Ethernet interface of the MBAC (Basic/Stage 2 equipment variant).
If the MBAC changes to the "External voltage" operating mode and the Bluetooth® interface of the MBAC is deactivated, the MBAC activates the Bluetooth® interface of the MBAC.
If the MBAC changes to the "External voltage" operating mode and the I/O module of the MBAC is deactivated, the MBAC activates the I/O module of the MBAC.
If MBAC Stage II changes to the "External voltage" operating mode and at least one HSVL interface of the MBAC is deactivated, MBAC Stage II activates each HSVL interface of the MBAC.
If the MBAC changes to the "External voltage" operating mode and the gateway of the MBAC is deactivated, the MBAC activates the gateway of the MBAC.
If the MBAC changes to the "External voltage" operating mode, there is no external voltage source and the voltage of the secondary battery is less than the on-board electrical system voltage, the MBAC switches to the "Undervoltage" operating mode a few seconds after having been changed to the "External voltage" operating mode.
If the MBAC changes to the "External voltage" operating mode, there is no external voltage source and the voltage of the secondary battery is greater than the on-board electrical system voltage, the MBAC switches to the "Body's own voltage" operating mode a few seconds after having been changed to the "External voltage" operating mode.
If the MBAC changes to the "External voltage" operating mode, it sets the value of the timer "Timer_External voltage" as soon as the MBAC has changed to the "External voltage" operating mode.
If the MBAC is in the "External voltage" operating mode, the voltage of the secondary battery is equal to the on-board electrical system voltage and each external voltage source is disconnected, the MBAC switches to the "Body's own voltage" operating mode a few seconds after the voltage source has been disconnected.
If the MBAC is in "External voltage" operating mode, the voltage of the secondary battery is less than the on-board electrical system voltage and each external voltage source is disconnected, the MBAC will change to the "Undervoltage" operating mode a few seconds after the voltage source has been disconnected.
As long as the MBAC is in the "External voltage" operating mode, the MBAC has the timer "Timer_separateDisplay". The value of the timer "Timer_separateDisplay" uses the unit second, is a whole number and is, at any time, ≥ 0 s.
As long as the MBAC is in the "External voltage" operating mode and the value of the timer "Timer_separateDisplay" is > 0 s, the MBAC reduces the value of the timer by 1 s every second.
If the MBAC is in the "External voltage" operating mode and the value of the timer "Timer_separateDisplay" is = 0 s, the MBAC deactivates the separate display.
If the MBAC changes to the "External voltage" operating mode, the MBAC sets the value of the timer "Timer_separateDisplay" to a fixed value in seconds.
If the MBAC is in the "External voltage" operating mode and there is a touch event on the separate display, the MBAC sets the value of the timer "Timer_separateDisplay" to a fixed value in seconds.
If the MBAC is in the "External voltage" operating mode and a wake-up signal is transmitted via the interface "DI_Wake-up_Pushbutton switch", the MBAC sets the value of the timer "Timer_separateDisplay" to a fixed value in seconds.
If the MBAC is in the "External voltage" operating mode, a wake-up signal is transmitted via the interface "DI_Wake-up_Pushbutton switch" and the separate display is deactivated, the MBAC activates the separate display.
As long as the MBAC is in the "External voltage" operating mode, the MBAC has the timer "Timer_External voltage". The value of the timer uses the unit second, is a whole number at any time ≥ 0 s.
As long as the MBAC is in the "External voltage" operating mode and the value of the timer "Timer_External voltage" is > 0 s, the MBAC reduces the value of the timer by 1 s every second.
If the MBAC is in the "External voltage" operating mode, at least one external voltage source is present and the value of the timer "Timer_External voltage" is = 0 s, the MBAC changes to the "ECO external voltage" operating mode after a few seconds.
If the MBAC is in the "External voltage" operating mode and the status of the vehicle's central locking system changes from "unlocked" to "locked", the MBAC sets the value of the timer "Timer_External voltage" to a fixed value in seconds.
If the MBAC is in the "External voltage" operating mode and detects a wake-up signal on the MBAC CAN bus interface, the MBAC sets the value of the timer "Timer_External voltage" to a fixed value in seconds.
If the MBAC is in the "External voltage" operating mode and detects a wake-up signal on the ABH CAN bus interface, the MBAC sets the value of the timer "Timer_External voltage" to a fixed value in seconds.
If the MBAC is in the "External voltage" operating mode and detects a wake-up signal on the LIN interface, the MBAC sets the value of the timer "Timer_External voltage" to a fixed value in seconds.
If the MBAC is in the "External voltage" operating mode and detects a wake-up signal on the Bluetooth® interface, the MBAC sets the value of the timer "Timer_External voltage" to a fixed value in seconds.
If the MBAC is in the "External voltage" operating mode and detects a wake-up signal on at least one I/O interface, the MBAC sets the value of the timer "Timer_External voltage" to a fixed value in seconds.
"Body's own voltage" operating mode
In the "Body's own voltage" operating mode, the current requirement of the MBAC is less than 5 A.
When MBAC Stage II changes to the "Body's own voltage" operating mode and the PC of MBAC Stage II is deactivated, MBAC Stage II activates the PC.
If MBAC Stage II changes to "Body's own voltage" operating mode and at least one Ethernet interface of MBAC Stage II is deactivated, MBAC Stage II activates each Ethernet interface of the MBAC (Basic/Stage 2 equipment variant).
If the MBAC changes to the "Body's own voltage" operating mode and the Bluetooth® interface of the MBAC is deactivated, the MBAC activates the Bluetooth® interface of the MBAC.
If the MBAC changes to the "Body's own voltage" operating mode and the I/O module of the MBAC is deactivated, the MBAC activates the I/O module of the MBAC.
If MBAC Stage II changes to the "Body's own voltage" operating mode and at least one HSVL interface of the MBAC is deactivated, MBAC Stage II activates each HSVL interface of the MBAC.
If the MBAC changes to the "Body's own voltage" operating mode and the gateway of the MBAC is deactivated, the MBAC activates the gateway of the MBAC.
If the MBAC changes to the "Body's own voltage" operating mode, no external voltage source is present and the voltage of the secondary battery is less than the on-board electrical system voltage, the MBAC switches to the "Undervoltage" operating mode after a few seconds.
If the MBAC changes to the "Body's own voltage" operating mode and at least one external voltage source is present, the MBAC switches to the "External voltage" operating mode after a few seconds.
If the MBAC changes to the "Body's own voltage" operating mode, the MBAC sets the value of the timer "Timer_Body'sOwnVoltage" to a fixed value in seconds.
If the MBAC is in the "Body's own voltage" operating mode and at least one external voltage source is connected, the MBAC switches to the "External voltage" operating mode after a few seconds.
If the MBAC is in the "Body's own voltage" operating mode and the voltage of the secondary battery is less than the on-board electrical system voltage, the MBAC switches to the "Undervoltage" operating mode after a few seconds.
As long as the MBAC is in the "Body's own voltage" operating mode, the MBAC has the timer "Timer_separateDisplay". The value of the timer uses the unit second, is a whole number and is, at any time, ≥ 0 s.
As long as the MBAC is in the "Body's own voltage" operating mode and the value of the timer "Timer_separateDisplay" is > 0 s, the MBAC reduces the value of the timer by 1 s every second.
If the MBAC is in the "Body's own voltage" operating mode and the value of the timer "Timer_separateDisplay" is = 0 s, the MBAC deactivates the separate display.
If the MBAC changes to the "Body's own voltage" operating mode, the MBAC sets the value of the timer "Timer_separateDisplay" to a fixed value in seconds.
If the MBAC is in the "Body's own voltage" operating mode and there is a touch event on the separate display, the MBAC sets the value of the timer "Timer_separateDisplay" to a fixed value in seconds.
If the MBAC is in the "Body's own voltage" operating mode and a wake-up signal is transmitted via the interface "DI_Wake-up_Pushbutton switch", the MBAC sets the value of the timer "Timer_separateDisplay" to a fixed value in seconds.
If the MBAC is in the "Body's own voltage" operating mode, a wake-up signal is transmitted via the interface "DI_Wake-up_Pushbutton switch" and the separate display is deactivated, the MBAC activates the separate display.
As long as the MBAC is in the "Body's own voltage" operating mode, the MBAC has the timer "Timer_Body'sOwnVoltage". The value of the timer uses the unit second, is a whole number and is, at any time, ≥ 0.
As long as the MBAC is in the "Body's own voltage" operating mode and the value of the timer "Timer_Body'sOwnVoltage" is > 0 s, the MBAC reduces the value of the timer by 1 s each second.
If the MBAC is in the "Body's own voltage" operating mode, the voltage of the secondary battery is at least equal to the on-board electrical system voltage and the value of the timer "Timer_Body'sOwnVoltage" is = 0 s, the MBAC changes to the "ECO body's own voltage" mode after a few seconds.
If the MBAC is in the "Body's own voltage" operating mode and the condition of the vehicle's central locking system changes from "unlocked" to "locked", the MBAC sets the value of the timer "Timer_Body'sOwnVoltage" to a fixed value in seconds.
If the MBAC is in the "Body's own voltage" operating mode and the MBAC detects a wake-up signal on the MBAC CAN bus interface, the MBAC sets the value of the timer "Timer_Body'sOwnVoltage" to a fixed value in seconds.
If the MBAC is in the "Body's own voltage" operating mode and the MBAC detects a wake-up signal on the ABH CAN bus interface, the MBAC sets the value of the timer "Timer_Body'sOwnVoltage" to a fixed value in seconds.
If the MBAC is in the "Body's own voltage" operating mode and the MBAC detects a wake-up signal on the LIN interface, the MBAC sets the value of the timer "Timer_Body'sOwnVoltage" to a fixed value in seconds.
If the MBAC is in the "Body's own voltage" operating mode and the MBAC detects a wake-up signal on the Bluetooth® interface, the MBAC sets the value of the timer "Timer_Body'sOwnVoltage" to a fixed value in seconds.
If the MBAC is in the "Body's own voltage" operating mode and the MBAC detects a wake-up signal on at least one I/O interface, the MBAC sets the value of the timer "Timer_Body'sOwnVoltage" to a fixed value in seconds.
"ECO external voltage" operating mode
If MBAC Stage II changes to the "ECO external voltage" operating mode and the PC of MBAC Stage II is activated, MBAC Stage II deactivates the PC.
If MBAC Stage II changes to the "ECO external voltage" operating mode and at least one Ethernet interface of MBAC Stage II is activated, MBAC Stage II deactivates each Ethernet interface of the MBAC (Basic/Stage 2 equipment variant).
If the MBAC changes to the "ECO external voltage" operating mode and the Bluetooth® interface of the MBAC is deactivated, the MBAC activates the Bluetooth® interface of the MBAC.
If the MBAC changes to the "ECO external voltage" operating mode and the I/O module is deactivated, the MBAC activates the I/O module of the MBAC.
If MBAC Stage II changes to the "ECO external voltage" operating mode and at least one HSVL interface of the MBAC is activated, MBAC Stage II deactivates each HSVL interface of the MBAC.
If the MBAC changes to the "ECO external voltage" operating mode and the gateway of the MBAC is deactivated, the MBAC system activates the MBAC gateway.
The MBAC is designed so that, as long as the MBAC is in "ECO external voltage" operating mode, the MBAC does not transmit any signals over the ABH CAN interface and over the MBAC CAN interface of the MBAC.
If the MBAC is in the "ECO external voltage" operating mode and the status of the vehicle's central locking system changes from "locked" to "unlocked", the MBAC changes to the "External voltage" operating mode at the latest after 3 s.
If the MBAC is in the "ECO external voltage" operating mode and the MBAC detects a wake-up signal on the ABH CAN bus interface, on the MBAC CAN bus interface, on the LIN interface or on at least one I/O interface, the MBAC switches to the "External voltage" operating mode at the latest after 3 s.
If the MBAC is in the "ECO external voltage" operating mode and the voltage of the secondary battery is less than the on-board electrical system voltage, the MBAC switches to the "External voltage" operating mode at the latest after 3 s.
"ECO body's own voltage" operating mode
In the "ECO body's own voltage" operating mode, the current requirement of the MBAC is < 100 μA.
If MBAC Stage II changes to the "ECO body's own voltage" operating mode and the PC of MBAC Stage II is activated, MBAC Stage II deactivates the PC.
If MBAC Stage II changes to the "ECO body's own voltage" operating mode and at least one Ethernet interface of MBAC Stage II is activated, MBAC Stage II deactivates each Ethernet interface of the MBAC (Basic/Stage 2 equipment variant).
If the MBAC changes to the "ECO body's own voltage" operating mode and the Bluetooth® interface of the MBAC is deactivated, the MBAC activates the Bluetooth® interface of the MBAC.
If the MBAC changes to the "ECO body's own voltage" operating mode and the I/O module is deactivated, the MBAC activates the I/O module of the MBAC.
If MBAC Stage II changes to the "ECO body's own voltage" operating mode and at least one HSVL interface of the MBAC is activated, MBAC Stage II deactivates each HSVL interface of the MBAC.
If the MBAC changes to the "ECO body's own voltage" operating mode and the gateway of the MBAC is deactivated, the MBAC activates the gateway of the MBAC.
The MBAC is designed so that, as long as the MBAC is in the "ECO body's own voltage" operating mode, the MBAC does not transmit any signals over the ABH CAN interface of the MBAC or over the MBAC CAN interface.
If the MBAC is in the "ECO body's own voltage" operating mode and the status of the vehicle's central locking system changes from "locked" to "unlocked", the MBAC changes to the "Body's own voltage" operating mode at the latest after 3 s.
If the MBAC is in the "ECO body's own voltage" operating mode and the MBAC detects a wake-up signal on the ABH CAN bus interface, on the MBAC CAN bus interface, on the LIN interface or on the I/O interface, the MBAC switches to the "Body's own voltage" operating mode at the latest after 3 s.
If the MBAC is in the "ECO body's own voltage" operating mode and the voltage of the secondary battery is less than the on-board electrical system voltage, the MBAC switches to the "Body's own voltage" operating mode at the latest after 3 s.
"Undervoltage" operating mode
In "Undervoltage" operating mode, the current requirement of the MBAC is < 100 μA.
If MBAC Stage II changes to the "Undervoltage" operating mode and the PC of MBAC Stage II is activated, MBAC Stage II deactivates the PC.
If MBAC Stage II changes to the "Undervoltage" operating mode and at least one Ethernet interface of MBAC Stage II is activated, MBAC Stage II deactivates each Ethernet interface of the MBAC (Basic/Stage 2 equipment variant). The Bluetooth® interface must be in the "Undervoltage" operating mode so that users of the MBAC app are informed about any undervoltage state via smartphone or tablet.
When the MBAC changes to the "Undervoltage" operating mode and the Bluetooth® interface of the MBAC is deactivated, the MBAC activates the Bluetooth® interface of the MBAC.
If the MBAC changes to the "Undervoltage" operating mode and the I/O module is deactivated, the MBAC activates the I/O module of the MBAC.
If MBAC Stage II changes to the "Undervoltage" operating mode and at least one HSVL interface of the MBAC is activated, MBAC Stage II deactivates each HSVL interface of the MBAC.
If the MBAC changes to the "Undervoltage" operating mode and the gateway of the MBAC is deactivated, the MBAC gateway activates the MBAC gateway.
The MBAC is designed so that, as long as the MBAC is in the "Undervoltage" operating mode, the MBAC does not transmit any signals over the ABH CAN interface or over the MBAC CAN interface of the MBAC.
If the MBAC is in the "Undervoltage" operating mode and the voltage of the secondary battery is less than or equal to the shut-off voltage, the MBAC switches to operating mode OFF.
If the MBAC changes to the "Undervoltage" operating mode and at least one external voltage source is present, the MBAC switches to the "External voltage" operating mode at the latest after 20 s.
If the MBAC changes to the "Undervoltage" operating mode, there is no external voltage source and the voltage of the secondary battery is greater than or equal to the on-board electrical system voltage, the MBAC switches to the "Body's own voltage" operating mode at the latest after 20 s.
If the MBAC changes to the "Undervoltage" operating mode, no external voltage source is present and the voltage of the secondary battery is less than the onboard electrical system voltage, the MBAC switches to operating mode OFF at the latest after 20 s.
Operating mode OFF
In the OFF operating mode, the current requirement of the MBAC is = 0 A.
If the MBAC is in the OFF operating status and the voltage of the secondary battery is greater than the shut-off voltage, the MBAC changes to the "Undervoltage" operating status.
If MBAC Stage II changes to the operating mode OFF and the PC of MBAC Stage II is activated, MBAC Stage II deactivates the PC.
If MBAC Stage II changes to the operating mode OFF and at least one Ethernet interface of MBAC Stage II is activated, MBAC Stage II deactivates each Ethernet interface of the MBAC (Basic/Stage 2 equipment variant). The MBAC searches for Appicals-compatible devices and detects any device connected over the Ethernet interface. If this device logs out over the Ethernet interface, it is then deleted from the memory by the MBAC. Additionally, the MBAC routes Appicals messages between the MBAC CAN interface and each Ethernet interface, as well as between the Bluetooth® interface and each Ethernet interface.
If the MBAC changes to the operating mode OFF and the Bluetooth® interface of the MBAC is activated, the MBAC deactivates the Bluetooth® interface of the MBAC.
If the MBAC changes to the operating mode OFF and the I/O module is activated, the MBAC deactivates the I/O module of the MBAC.
If MBAC Stage II changes to the operating mode OFF and at least one HSVL interface of the MBAC is activated, MBAC Stage II deactivates each MBAC interface.
If the MBAC changes to the operating mode OFF and the gateway of the MBAC is activated, the MBAC deactivates the gateway of the MBAC.
The MBAC is designed so that, as long as the MBAC is in the OFF operating mode, the MBAC does not transmit any signals over the ABH CAN interface or over the MBAC CAN interface of the MBAC.
| Overview of system components of caravan control unit | Model 907, 910 | GF54.21-D-9992TSA | |
| Overview of system components of caravan control unit | Model 447 | GF54.21-S-9992TMA |