2 Installation and Wiring
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2 Communication address setting of HCB and car display board
When the MCB is in networking with the HCBs, each HCB must have a unique address;
otherwise, communication will be abnormal.
When the CTB is in networking with the car display board and voice announcer, the
car display board address is 0. The voice announcer does not need any address setting
and can be directly used after being connected. For details on how to set the address
of the display board, see the related description in 3.3.3 Display Board (MCTC-HCB).
The address allocation is as follows:
0: Car display board address
CTB by CANbus.
The NICE3000
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3 Topology requirement
When there are a large number of nodes, the RS485 bus structure can be in hand-
in-hand connection or branch connection. If branch connection is used, the cable
length between the bus and a node is as short as possible; the recommended length
common bus structure diagram.
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Hand-in-hand connection structure
Host
1
Node
2
Node
3
Node
4
Node
N
RS485 bus
Hand-in-hand connection structure
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