Ver.3− − − − 56
Ex
Ex
Ex
Ex
Cases where internal registers are invalid
8 8 8 8
Case 1 : A case where internal register not yet is selected (Please refer to document page1 for setting
range) )
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
1
Slave address
2
Function code
3
Exception code
4
CRC-16 (high order)
5
CRC-16 (low order)
An Exceptional response is given when 0000h is set as internal register because it is interpreted as not yet
set.
Field Name
Field Name
Example
Example
(Hex)
01
03
60
00
00
01
9A
0A
(Hex)
01
83
31
80
E4
Register address value = Register
Number - 1
One register