Hitachi WJ200-001L, Instruction Manual

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Ver.3
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Case 2: When selecting 32-bit parameter for an internal register. (Please refer to the page 1 for setting
range.
Reading Holding Register [03h] , Target register = external register
Query:
Response:
No Field Name Example
(Hex)
1 Slave address 01
2 Function code 83
3 Exception code 31
4 CRC-16 (high order) 80
5 CRC-16 (low order) E4
Only 16-bit Holding register can be designated as an internal register. So You will get an exception
response if you choose 32-bit register for an internal register.
No Field Name Example
(Hex)
1 Slave address 01
2 Function code 03
3 Register start address (high order) 60
4 Register start address (low order) 01
5 Number of holding registers (high order) 00
6 Number of holding registers (low order) 01
7 CRC-16 (high order) CB
8 CRC-16 (low order) CA
Register address value = Register
Number - 1
One register