Hitachi WJ200-001L, Instruction Manual

Page: 559 / 680

Ver.3
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50
（１）
Reading out Holding register[03h]
、
Target register: Internal register (second pair)
Query:
Response:
No Field Name Example
(Hex)
1 Slave address 01
2 Function code 03
3 Register start address (high order) 12
4 Register start address (low order) 0F
5 Number of holding registers (high order) 00
6 Number of holding registers (low order) 01
7 CRC-16 (high order) B1
8 CRC-16 (low order) 71
Ｎｏ
Field Name Example
(Hex)
1 Slave address 01
2 Function code 03
3 Data size (in bytes) 02
4 Register data 1 (high order) 00
5 Register data 1 (low order) 64
6 CRC-16 (high order) B9
7 CRC-16 (low order) AF
The value of internal register is exactly
read out.
One register