Mitsubishi Electric MELSEC iQ-R Series User Manual page 321

■Data logging information 1 to 64 (Un\G2030 to 2989)
The information of the error which occurred in the data logging function is stored.
Data logging information area is comprised of 64 pieces of data logging information with the same data configuration.
Un\G2030 to 2044 Data logging information 1
Data logging information 2
Un\G2045 to 2059
Un\G2975 to 2989 Data logging information 64
● Error code
An error code is stored in the area corresponding to the data logging setting where the data logging error is occurring.
When errors related to access target CPU occur, the error code of the access target CPU may be stored to other settings
which also use the same access target CPU.
● Number of latest folders
The number of latest folders is stored.
● Number of latest files
The number of latest files is stored.
● High speed sampling failure count
When high speed sampling is selected in the sampling setting and when the data sampling speed cannot catch up with the
timing of the sequence scan or specified time interval, the total number of times for which the data is lacking is stored.
When high speed sampling fails, the following cases occur.
• Data in the data logging file is lacking
• When a trigger logging is set, trigger establishments may not be detected
• When the data condition is selected in the period setting, the satisfaction of data conditions may not be detected
• Data to be displayed with GX LogViewer is lacking
Take corrective actions by referring to the following:
Page 350 Checking sampling process time
● Processing overload count
When the data logging processing cannot catch up with the data sampling speed, the total number of times for which the data
is lacking is stored.
When processing overload occurs, the following symptoms occur.
• Data in the data logging file is lacking
• When a trigger logging is set, trigger establishments may not be detected
• When the data condition is selected in the period setting, the satisfaction of data conditions may not be detected
• Data to be displayed with GX LogViewer is lacking
Take corrective actions by referring to the following:
Page 350 Checking sampling process time
b15
+0
+1
Number of latest folders
+2
+3
Number of latest files
+4
+5 High speed sampling failure count
+6 Processing overload count
Unprocessed buffer size
+7
+8 Unprocessed data count (current)
+9 Unprocessed data count (maximum)
+10 Trigger detection count
Trigger reoccurrence count
+11
+12 +14
b8 b7 b0
Error code
System area
Appendix 3 Buffer Memory
A
APPX
319