Mercedes-Benz E-Class Series 207 Service Manual page 69

Overall network
MOST
MOST is an optical networking system. Data are
transmitted via fiber optic cables between the
connected information, navigation and communica-
tions components.
Transfer rate 22 Mbit/s.
Gateway function
Control units with a data bus function can receive
signals from more than one data bus and relay
signals via these particular data buses as they are
linked with two or more data buses.
Control units with gateway function (schematic)
68
Introduction of the New E-Class Coupé, Model Series 207
b
P00.19-4651-00
– This printout will not be recorded by the update service. Status: 01 / 2009 –
Front SAM control unit with fuse and relay
module with central gateway function
One innovation is the integration of the central
gateway with the front SAM control unit with fuse
and relay module in a single housing. Both control
units feature separate microprocessors, each with
a dedicated CAN interface. The front SAM control
unit with fuse and relay module therefore has direct
access to the interior CAN. The bus systems are
linked together over the integrated central
gateway. These also include the diagnostic CAN,
which links the diagnosis test system with the other
subnetworks.
LIN bus
The LIN bus is a universal communications system
in the vehicle. It enables simple communications
with intelligent sensors and actuators for which the
bandwidth and flexibility of the CAN is not neces-
sary.
A40/3 COMAND controller unit
N3/9 CDI control unit (with diesel engine)
N3/10 ME-SFI [ME] control unit
(with gasoline engine)
N10/1 Front SAM control unit with fuse and relay
module
N30/4 Electronic Stability Program control unit
without code (233)
N30/7 Electronic Stability Program Premium
control unit with code (233)
CAN A Telematics CAN
CAN B Interior CAN
CAN C Drivetrain CAN
CAN D Diagnostic CAN
CAN E Chassis CAN
CAN G Front end CAN
CAN H Vehicle dynamics CAN
MOST Media Oriented System Transport