Troubleshooting Related To Data Logging, Event Logging, And Reports - Mitsubishi Electric QJ81DL96 User Manual

18
TROUBLESHOOTING

18.3.2 Troubleshooting related to data logging, event logging, and reports

Symptom
Cannot sample data per
sequence scan.
Cannot sample data in the
specified data sampling
interval. (High speed data
sampling)
Cannot sample data in the
specified data sampling
interval. (General data
sampling)
The CSV formatted data
logging and event logging
time/date information are not
displayed correctly.
Data separation occurs.
18
- 35 18.3 Troubleshooting by Symptom
18.3.2 Troubleshooting related to data logging, event logging, and reports
Check point
Is high speed data sampling failure (X1A) ON?
Check the power supply status.
(Has a momentary power failure occurred?)
Is high speed data sampling failure (X1A) ON?
Check the power supply status.
(Has a momentary power failure occurred?)
Is general data sampling delay (X1E) ON?
Has the high speed data logger module's time
been changed by the time synchronization
function?
When the CSV file was opened with Excel, was
the cell format set?
Is the number of device points within the access
units?
Is the report creation trigger set to synchronize
with the current value data?
Is general data sampling being used?
Is the data being changed after the report creation
trigger occurs?
Corrective action
• Decrease the number of settings in which high
speed data sampling is specified.
• Set a constant scan to the programmable
controller CPU.
 Chapter 17 PROCESSING TIME
• Correct the power supply status.
• Decrease the number of settings in which high
speed data sampling is specified.
• Lengthen the data sampling interval for the high
speed data sampling.
 Chapter 17 PROCESSING TIME
• Correct the power supply status.
• Decrease the number of settings in which
general data sampling is specified.
• Mount the high speed data logger module to the
access target CPU station and perform high
speed data sampling.
 Chapter 17 PROCESSING TIME
• Change the timing of the time synchronization.
(Do not synchronize time while the system is
operating)
 Section 11.4.2 (3) Common precautions
on synchronization with programmable
controller CPU and SNTP
• Set the Excel cell format matched to the desired
date/time format for display.
 Section 11.5.13 (1) Date column
• Set the number of device points sampled at one
time to within the access units.
 Section 3.2 (5) Access units
• Check "Synchronize creation trigger with current
value data." in the creation trigger settings.
 Section 11.7.6 (3) Creation trigger (single
condition)
 Section 11.7.6 (4) Creation trigger
(compound condition)
• Use high speed data sampling.
 Section 7.2 Target Data Sampling
 Section 9.2 Creation Trigger and Current
Value Data Sampling
• Adjust the system so that the devices sampled
as current values for the report do not change
during the period the report creation execution
information is ON in the buffer memory.
(Continued on the next page)