User manual

Index
1. Description ............................................................... 5
1.1 LRC generation ................................................................. 6
1.2 CRC generation ................................................................. 7
2. Read commands structure ..................................... 10
2.1 MODBUS ASCII/RTU ....................................................... 10
2.2 MODBUS TCP .................................................................. 11
2.3 Floating point as per IEEE Standard ............................... 12
3. Write commands structure .................................... 13
3.1 MODBUS ASCII/RTU ....................................................... 13
3.2 MODBUS TCP .................................................................. 14
4. Exception codes ...................................................... 15
4.1 MODBUS ASCII/RTU ....................................................... 15
4.2 MODBUS TCP .................................................................. 15
5. Register tables ....................................................... 16
5.1 Reading registers (Function code $01 / $03 / $04) ......... 17
5.2 Writing registers (Function code $10) ............................ 24