Hitachi WJ200-001S Instruction Manual page 558

Response:
No Field Name
1 Slave address
2 Function code
3 Data size (in bytes)
4 Register data 1 (high order)
5 Register data 1 (low order)
6 CRC-16 (high order)
7 CRC-16 (low order)
The value of internal register 1210h (A014) is read out.
Example
(Hex)
01
03
02
00
64
B9
AF
Ver.3− − − − 49