Mitsubishi Electric MELSEC iQ-R04ENCPU - Return Slave no Response Count (Sub-Function Code: 0 FH)

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3 MODBUS STANDARD FUNCTION DETAILS
3.8 Diagnostics (FC: 08H)
Return slave no response count (sub-function code: 0FH)
Operation description
Reads to out the number of broadcast request messages received to the master.
Request message format (from master to slave)
Response message format (from slave to master)
■ When completed successfully
Returns the count value of the buffer memory listed below to the master.
• 'Slave no-response count' (Un\G32519/Un\G32583)
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
(H) (L)
08H (000FH) (0000H)
(H) (L)
DataFunction code Sub-function code
(H) (L)
(H) (L)
08H (000FH)
Function code Sub-function code
Slave no-response count value
Data
(0000H to FFFFH)
88H
Data
Exception code
Function code