Mitsubishi Electric MELSEC iQ-R04ENCPU - Return IOP Overrun Error Count (Sub-Function Code: 13 H)

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3 MODBUS STANDARD FUNCTION DETAILS
3.8 Diagnostics (FC: 08H)
Return IOP overrun error count (sub-function code: 13H)
Operation description
Reads the IOP overrun error count value to the master.
C24 returns to the master the number of times the request message size exceeds the upper limit. (Same as the Return bus
character overrun count)
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.
• 'Character overrun count' (Un\G32514/Un\G32578)
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 (0013H) (0000H)
(H) (L)
DataFunction code Sub-function code
(H) (L)
(H) (L)
08H (0013H)
Function code Sub-function code Data
(0000H to FFFFH)
Bus character overrun
count value
88H
Data
Exception code
Function code