BLVD20KM_asukiaaa

A library for Arduino to control BLVD20KM which is a brushless motor controller of Oriental Motor.

Usage

BLVD20KM configuration

SW 2

To use BLVD20KM in 115200bps via RS485 modbus, set switch 2 like this

No	State	Role
1	OFF	Baudrate
2	OFF	Baudrate
3	ON	Baudrate
4	OFF	Not used
5	ON	Use Modbus Protocol
6	OFF	Not used
7	ON if the BLVD02KM is end of RS485 chain	End point register
8	OFF	Address upper bit

Baudrate configuration

No1	No2	No3	Baudrate
OFF	OFF	OFF	9600
ON	OFF	OFF	19200
OFF	ON	OFF	38400
ON	ON	OFF	57600
OFF	OFF	ON	115200

SW 3

Switch 3 means address of motor driver. If you use multiple motor, set different address for each motors.

Connection

LAN cable pinout of BLVD20KM

No	Role
1	NC
2	GND
3	TR+
4	NC
5	NC
6	TR-
7	NC
8	NC

Arduino <-> Uart to RS485S Transceiver <-> BLVD20KM

Arduino	Uart to RS485	BLVD20KM
None	A	TR+ (LAN 3)
None	B	TR- (LAN 6)
TX1	DI	None
RX1	RO	None
D3	RE	None
D2	DE	None
VCC	5V	None
GND	GND	GND (LAN 2)

I checked connection with using SparkFun Transceiver Breakout - RS-485.

Software

See example project and header file.

License

MIT

References

• BLVD20KM manual list ja en
• BLVD20KM
• ArduinoでRS-485に対応する
• CRC16を計算する