Mitsubishi QJ71MB91, User Manual

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4
MODBUS(R) STANDARD FUNCTIONS
4.11 Diagnostics (FC: 08)
4.11.16 Clear overrun counter and flag (sub-function code: 20)
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4.11.16 Clear overrun counter and flag (sub-function code: 20)
Clears the overrun error counter and flag.
The QJ71MB91 clears the character overrun error counter value.
(1) Request message format (Master Slave)
(2) Response message format (Slave Master)
(When completed normally)
The slave returns the request message received from the master without change.
(When completed with an error)
* 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
Figure 4.69 Clear overrun counter and flag (Request message)
Figure 4.70 Clear overrun counter and flag (Exception message)
(L)
Data
(L)
Function code
Function
code
(08
H
)
Sub-function code
Sub-function code
(0014
H
)
(0000
H
)
(H)
(H)
Data
Function code
Function
code
(88
H
)
Exception
code* 1