Get Communications Event Log (Fc: 0Ch) - Mitsubishi Electric MELSEC iQ-R Series Reference Manual

3.10

Get Communications Event Log (FC: 0CH)

Operation description
Acquires the communications event log into the master.
Request message format (from master to slave)
Function code
0CH
Response message format (from slave to master)
■ When completed successfully
Function code
Number of Program command status
read bytes
0CH
(H)
Since C24 does not support any program commands, 0000H is stored in the program command status.
Returns the count values of the buffer memory listed below to the master.
• 'Communications event count' (Un\G32523 to Un\G32587)
• 'Bus message count' (Un\G32512/Un\G32576)
• 'Communications event log 1 to 64' (Un\G32544 to Un\G32575/Un\G32608 to Un\G32639)
Refer to the following for the counter descriptions, count range, and count clear methods.
Page 21 Checking communication conditions using a diagnostic counter
Page 38 Get Communications Event Counter (FC: 0BH)
For details on the communications event log, refer to the following.
Page 40 Communications event log
■ When completed with an error
Function code Data
Exception code
8CH
Data
Communications event
count value
(0000H) (0000H to FFFFH)
(L) (H) (L)
Bus message count value Communications
event log No. 0
(0000H to FFFFH)
(H) (L)
Number of read bytes
3 MODBUS STANDARD FUNCTION DETAILS
3.10 Get Communications Event Log (FC: 0CH)
3
Communications
event log No. 63
39