6 | Communication Channels
16/136 Vehicle_Control_Unit_VCU_Manual Bosch Motorsport
6 Communication Channels
CAN bus
The Vehicle Control Unit VCU has two CAN buses configurable as input and output. Dif-
ferent baud rates are selectable. Please note that the Vehicle Control Unit VCU does not
contain any CAN termination resistors. Thus, the CAN termination resistors need to be in-
tegrated into the wiring loom.
Ethernet channels
The Vehicle Control Unit VCU has three 100 MBit full duplex Ethernet communication
ports. The ports are internally connected with an Ethernet switch. The Ethernet ports have
'cable auto crossover' functionality.
RS232 port
The Vehicle Control Unit VCU has one RS232 serial port dedicated to inbound GPS data.
Vehicle diagnosis connector
The Bosch Motorsport vehicle diagnosis connector is used as a standard interface to con-
nect the vehicle to a PC e.g. via a MSA-Box II. Loom connector: AS012-35SN
Pin Name Description Used for Vehicle Control Unit
VCU
Pin 1 Terminal 30 Permanent positive +
Pin 2 Terminal 15 Switched positive +
Pin 3 Terminal 31 GND +
Pin 4 CAN High Diagnostic CAN bus
Pin 16 CAN Low Diagnostic CAN bus
Pin 10 K-Line ECU diagnosis
Pin 8 Ethernet RxD + Ethernet interface +
Pin 9 Ethernet RxD - Ethernet interface +
Pin 11 Ethernet TxD + Ethernet interface +
Pin 12 Ethernet TxD - Ethernet interface +
Pin 22 Screen Cable screen +
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