Hitachi WJ200-001S Instruction Manual page 550

Ex Ex Ex Ex The external register number you would like to use is already listed in Hitachi register number(in
５ ５ ５ ５
this case, overlapping with high order of 32-bit parameter)
* * * * Below setting must be entered from the operator before Modbus communication, with power cycle.
External register
number
1218h
（ A 021 （ H IGH ） ）
When [O] input active range start voltage
(1) Reading Holding Register [03h] 、 t arget register ： E xternal Register
Query:
No
1 Slave address
2 Function code
3 Register start address (high order)
4 Register start address (low order)
5 Number of holding registers
(high order)
6 Number of holding registers (low order)
7 CRC-16 (high order)
8 CRC-16 (low order)
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)
Internal register
number
120Fh
（ A 013 ）
= 33 %( 21h)
Field Name
Example
(Hex)
5C
Scaling
1.000
Example
(Hex)
01
03
12
17
00
01
31
76
01
03
02
00
21
78
Ver.3− − − − 41
Format
Unsigned