Return Slave Message Count (Sub-Function Code: 14) - Mitsubishi QJ71MB91 User Manual

4
MODBUS(R) STANDARD FUNCTIONS

4.11.10 Return slave message count (sub-function code: 14)

Reads out the number of the slave message processing to the master. (Including receive
of request messages from broadcast.)
(1) Request message format (Master
(2) Response message format (Slave
(When completed normally)
(When completed with an error)
Function code
Function code Sub-function code
Function
Sub-function code
code
(000E )
H
(08 )
H
(H)
Figure 4.51 Return slave message count (Request message)
Function code
Sub-function code
Function
Sub-function code
code
(000E )
H
(08 )
H
(H)
The QJ71MB91 returns the slave message count value of the
buffer memory to the master. (address: 0F06
Figure 4.52 Return slave message count (Normal response message)
* 1 Refer to the following for the relevant counts, count clear methods and precautions.
Section 11.3
Data
Function
Exception
code
2
code *
(88 )
H
Figure 4.53 Return slave message count (Exception message)
* 2 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
4.11.10 Return slave message count (sub-function code: 14)
Slave)
Data
(0000 )
H
(L) (L)
(H)
Master)
Data
Slave message count value
(0000 to FFFF ) *
H H
(L) (L)
(H)
/0F46 )
H H
4.11 Diagnostics (FC: 08)
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