Figure 5-2 Main Lin Network Configuration - Fujitsu F2MC-8FX Series User Manual

The characteristics of LIN used in the way described above, are collated and introduced in the
following five points.
1. Single master communication
LIN has two types of communication nodes. One is the "master" (sender).This controls the start
of all communications. The other is the slave (recipient).The slave responds to commands sent
by the master. LIN communication must start from the master, and cannot be started by a slave.
Further, the LIN communication mode designated as the master is pre-determined. This format
is called a "single master format".
2. A maximum of 15 slave nodes can be connected using bus wiring.
The LIN network configuration (topology) is a bus. With single master LINs, the slaves
communicate only when they receive commands from the master, so there is no conflict of
signals in the bus. A maximum of 15 slave nodes can be connected to one master.
Communications can be
started from the master
Slave1
(Mirror)
3. Wiring is completed using a single wire
The on-board ECUs are connected to the LIN network via transceiver ICs (electronic
components that send and receive data), and each ECU is connected on the bus from the master
Master
(Door)
Communications cannot be
started from the slave!!
Slave2
(Door Lock)
Up to 15 slaves max. Can be connected
Transceiver IC (Electronic component for sending and
receiving data)

Figure 5-2 Main LIN network configuration

81
AN07-00200-03E
Slave3
(Windows)
Slave15