HEXA

ELECTRICAL 151 8.10 IN VEHICLE NETWORKING ( IVN ) NETWORKING Networking means connecting different ECU’s in vehicle  Systems are connected with unshielded twisted pair (standard specialized wire)  That will share vehicle runtime data to realize features  One System controls its partner systems ( E.g. ESP Controls Transfer Case Controller ) TYPICAL CAN ( Controller Area Network ) NETWORK: This vehicle is equipped with a CAN ( Controller Area Network ). It involves a software and hardware solution which is designed to efficiently manage the resources on the vehicle allowing:  The sharing of information between the various ECU’s.  The integration of several ECU’s through one network.  A high network information exchange speed ( 500 Kbps ).  Advantages in economic terms because there is a considerable reduction in the wiring/connectors inside the vehicle.  Higher standards in terms of quality and reliability. The CAN bus consists of two lines, CAN_L and CAN_H ( CAN Low and CAN high, respectively) , as well as two terminating resistors ( 110-130 ohm ).A twisted-pair cable, highly resistant to noise, is used for the communications line. The advantage of using a CAN system is that communication takes place between numerous ECU’s and consequently the number of signals to be managed is very high. The different ECU’s which make up the system, known as network nodes, are connected to the CAN by means of communication interfaces known as Transceivers. The exchange of information at CAN type serial lines are only possible using a CAN 2.0B transmission protocol. Colors of CAN wires: CAN LINE Wire Colour CAN H Yellow CAN L Green