Clear Overrun Counter And Flag (Sub-Function Code: 20) - Mitsubishi Electric QJ71MB91 User Manual

4
MODBUS STANDARD FUNCTIONS

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