Central Control Module: Description and Operation

GF54.21-P-4170GZ Central Gateway Control Unit, Component Description







Location
The central gateway control unit (N93) is located in the driver footwell on the left in the direction of travel.

Tasks
- Gateway between the CAN class B and CAN class C as well as CAN class D
- Global variant coding (with networked control units the central gateway transmits global information such as model series and national version to the CAN-B control unit, CAN-C control unit and CAN-D control unit)
- Router between CAN-class B and diagnostic CAN
- Router between CAN class C and diagnostic CAN
- Diagnosis between CAN class B and diagnostic CAN
- Diagnosis between CAN-class C and diagnostic CAN
- Data container

In the vehicles there are 3 CAN buses which are connected by the central gateway control unit:
- Diagnostic CAN with a transfer rate of 500 kbit/s
- CAN-Class B with a transfer rate of 83.3 kbit/s
- CAN-Class C with a transfer rate of 500 kbit/s