Return Slave Message Count (Sub-Function Code: 0Eh) - Mitsubishi Electric MELSEC iQ-R Series Reference Manual

Return slave message count (sub-function code: 0EH)

Operation description
Reads out the number of the slave message processing to the master (including receive of request messages from
broadcast).
Request message format (from master to slave)
Function code Sub-function code
08H (000EH)
(H)
Response message format (from slave to master)
■ When completed successfully
Function code Sub-function code
08H (000EH)
(H)
Returns the count value of the buffer memory listed below to the master.
• 'Slave message count' (Un\G32518/Un\G32582)
Refer to the following for the counter descriptions, count range, and count clear methods.
Page 21 Checking communication conditions using a diagnostic counter
■ When completed with an error
Function code Data
Exception code
88H
Data
(0000H)
(L) (H) (L)
Data
Slave message count value
(0000H to FFFFH)
(L) (H) (L)
3 MODBUS STANDARD FUNCTION DETAILS
3.8 Diagnostics (FC: 08H)
3
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