Mazda 2002 Millenia Spezifikationen PDF herunterladen (Seite 224)

T8

MULITIPLE COMMUNICATION SYSTEM

CAN SYSTEM OUTLINE

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Time Division Multiplex

• For information exchange between the electrical modules in the conventional system, a wire connection was

necessary for each information signal. However, by sending the different signal at varying times over one

channel, it is possible to send a large amount of information via a small harness.

• In the conventional, non-multiplex system, in order to control the illumination of the five bulbs, one switch and

one channel was necessary for each bulb. For bulbs B and C to illuminate, switches B and C must be ON and

electricity must flow through the channel. With the time multiplex system, this can be done through one

channel. The channel is comprised of five data signal transmitters which transmit either 0 or 1 signal to

indicate for a bulb to turn ON or OFF. For example, to illuminate bulbs B and C, transmitters B and C transmit a

1 and transmitters A, D, and E transmit a 0. When the receiver receives these signal, bulbs B and C

illuminate.

End Of Sie

VEHICLE CAN SYSTEM

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• By rearranging the multiple signal, common information between the CAN system-related modules is

transmitted and received through the multichannel.

• The signal transmitted by one CAN system-related module is sent through the multichannel to all the CAN

system-related modules, but only the concerned module(s) receives the signal and performs the appropriate

operation (ex. light illumination, fan operation).

A6E8111T005

1 Non-multiplex system

2 Time division multiplex system

3Data

4 Each signal is transmitted one by one through the

channel as it is received.

5 Each signal is output one by one it is received from

the channel.

A6E8111T006

1 Conventional system

2 Electrical module

3 CAN system

4 CAN system-related module

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Mazda 2002 Millenia Spezifikationen Seite 224