Mitsubishi Electric MELSEC iQ-R Series User Manual page 322

● Unprocessed buffer size
The size of the unprocessed buffer (internal memory), which temporarily accumulates sampled data from the CPU module, is
stored. (If the size is 20, the buffer can accumulate 20 times worth of data sampling processing.)
The accumulated data are processed by the data logging processing. For details on the unprocessed buffer, refer to the
following:
Page 350 Checking sampling process time
● Unprocessed data count
The amount of data accumulated in the unprocessed data buffer is stored.
Current : The newest unprocessed data count is stored.
Maximum: The maximum value of the unprocessed data count is stored.
If the unprocessed data count reaches the unprocessed buffer size, processing overload count occurs during the next data
sampling process. When the unprocessed data count tends to increase, processing overload count may occur from the
elapsed time. Take corrective actions by referring to the following:
Page 350 Checking sampling process time
● Trigger detection count
The number of trigger occurrences detected is stored.
The trigger reoccurrence count is not included.
● Trigger reoccurrence count
After a trigger occurs, the number of triggers that was ignored due to the recurrence of the trigger while sampling data for the
number of lines after the trigger is stored.
Take corrective actions by referring to the following:
Page 350 Checking sampling process time
For operation when triggers continuously occur, refer to the following:
Page 29 Trigger logging function
APPX
320
Appendix 3 Buffer Memory