Mitsubishi Electric Melsec Q Series User Manual page 393

10
TROUBLESHOOTING
Symptom
The program specified by the program
execution function is not executed.
Job startup is delayed.
Job execution is slow.
Selecting [Resend] from [DB buffering
operation] of [Remote operation] will not
resend buffered SQL texts of the job for
which manual resend is selected.
Section 7.13.6 Operating the DB
buffering
Table 10.21 Troubleshooting about the DB interface function
Checked item
Was execution of the program including
displays attempted while multiple users
have logged on to the application server
computer?
Were the trigger conditions for multiple
jobs met concurrently?
Has an error occurred in [Error log] of
[Working log]?
Section 7.12.5 Checking the
working log of the MES interface
module
Was the job execution time prolonged?
Was the value in the Monitoring interval
timeout count area (buffer memory
address: 11510) increased?
Is the processing load of the server
computer is appropriate?
Is data volume in the data base within the
specified capacity of the personal
computer?
Is the number of selected/updated
records are extreme when selecting or
updating?
Is "Startup logging" enabled in the Job
settings?
Is the service processing load on the
CPU module to be accessed increased?
Is there any problem on the connection
routes to all of the database server
computers?
Are the DB Connection Services in all the
database server computers operating
normally?
10.3.3 When operating the MES interface module
Corrective action
• When a program including displays is
executed, the program screen is displayed
for only one user who has logged on to the
application server.
Make all of the users log off the application
server computer once, and execute the
program with a single user logged on.
• If the trigger conditions for multiple jobs are
met concurrently, startup of some job may be
delayed.
Section 6.1.11 (1) Operation behavior
of jobs
• If an error has occurred, identify the error
cause and take corrective actions.
Section 10.2 Error Code List
• If the job execution time is prolonged, startup
of the next job may be delayed.
Section 6.1.11 (1) Operation behavior
of jobs
• Check and correct the number of job settings
or trigger condition settings.
• Check if the processing load of a personal
computer for server is excessively high.
• Review data volume in the data base.
• Set the Select/Update/Delete conditions that
apply appropriate records only.
• Disable "Startup logging" in the Job settings.
Section 7.10.1 (4) Startup logging
• Review the service setting of the CPU
module to be accessed.
• Use the constant scan of the CPU module to
be accessed.
• Check the connections with all of the
database server computers.
• When buffered SQL texts are to be sent to
more than one destination, unless the
communication with all the database server
computers is recovered, resending is not
started.
• Check each of the DB Connection Services
in all the database server computers.
• When buffered SQL texts are to be sent to
more than one destination, unless DB
Connection Services in all the database
server computers are operating, resending is
not started.
10.3 Troubleshooting by symptom
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