Brushless Motor Driver SEH400RB
6.4 RS485
The communication function of this driver adopts Modbus protocol, which conforms to the standard GB/T
19582.1-2008. Using RS485-based two-wire serial link communication, the physical interface adopts
3.81mm, 3PIN plug-in terminal, the terminal definition is shown in the figure below, and three wires need to
be connected: B, A, GNDE. The communication address can be set through the panel operation. The 120Ω
terminal matching resistance needs to be externally connected by the user.
3PIN Plug-in terminal block
Bus
RS485
Protocol
MODBUS
Communication
mode
Half duplex
Standard
GB/T 19582.1—2008
Communication
rate
9600
（
can be set
）
Data bit
8 bit
Stop bit
1 bit
Check
ModbusCRC low order first
Communication
node
247
