Projects:Modbus Meter
Hardware
- B+G E-tech SDM630-Modbus
- http://bg-etech.de
- http://bg-etech.de/os/product_info.php/cPath/25_28/products_id/50
- http://bg-etech.de/download/manual/SDM630Register.pdf
- Default:
- 9600 Baud
- Address: 001
Communication
- Send (HEX)
- 01 : Address
- 04 : Function
- 00 : Starting address high
- 00 : Starting address low
- 00 : Number of points high
- 00 : Number of points low
- 71 : Error check high
- CB : Error check low
- Receive (HEX)
- 01 : Address
- 04 : Function
- 04 : number of bytes
- 43 : data high - high
- 66 : data high - low
- 33 : data low - high
- 34 : data low - low
- 1B : Error check high
- 38 : Error check low
- Return data according to IEEE 754 float point format