Sakura FCA 201, Техническое руководство

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Page 13
3 . Modbus Protocol Specification- Optional
For WP01V_BMS V1.0
3 . 1 Communication protocol
The way of start communication
：
After the order is sent from master to
slaver(WP01V_BMS), the communication is started
。
3 . 2 The structure of Communication data
（
a
）
Interface Communication style
：
RS485-2W
mode
：
RTU
（
Remote Terminal Unit
）
Synchronization mode
Connector type
：
Blue Color Connector Mark A B
（
b
）
The bit rate
：
9600[bps]
（
c
）
The format of each datum:
Start bit: 1[bit]
Data bit: 8[bit]
Stop bit: 1[bit]
（
d
）
Coil, input mode, remain record, input record definition
（
e
）
Every one idu WP01V_BMS need a modbus unique ID, range from 1-16; Id 0
is use for broadcast Id
WP01V_BMS SW1-4 Set Modbus Slaver ID
SW-1 SW-2 SW-3 SW-4 Modbus ID
0 0 0 0 1
1 0 0 0 2
0 1 0 0 3
1 1 0 0 4
0 0 1 0 5
1 0 1 0 6
0 1 1 0 7
1 1 1 0 8
0 0 0 1 9
1 0 0 1 10
0 1 0 1 11
1 1 0 1 12
0 0 1 1 13
1 0 1 1 14
0 1 1 1 15
1 1 1 1 16
（
f
）
Modbus Table Description 03 Function