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4
MODBUS STANDARD FUNCTIONS
4
- 29
4.11 Diagnostics (FC: 08)
4.11.3 Return diagnostic register (sub-function code: 02)
(When completed with an error)
Function code
Data
Function
Exception
code
code*
1
(88
)
H
Figure 4.34 Return diagnostic register (Exception message)
* 1 Exception and error codes are stored in the buffer memory in the case of error completion.
Refer to the following for storage location, confirmation methods, and detailed contents.
Section 11.4
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