Mitsubishi Electric Melsec Q Series User Manual page 390

10
TROUBLESHOOTING
Symptom
Values will not be stored in the database.
Database values will not be stored in
programmable controller devices.
10
- 49 10.3 Troubleshooting by symptom
10.3.3 When operating the MES interface module
Table 10.21 Troubleshooting about the DB interface function
Checked item
Is the number of updated, inserted, or
deleted records 0 in the access log of DB
Connection Service?
Is an SQL statement called from the
processing (such as stored procedure)
executed in the database?
Has an error occurred in [Error log] of
[Working log]?
Section 7.12.5 Checking the
working log of the MES interface
module
When trigger conditions of a job with
[Startup logging] setting are met, is the
startup logged in [Event log] of [Working
log]?
Section 7.12.5 Checking the
working log of the MES interface
module
In [Change job status] of [Remote
operation], is [Disable writing to PLC
device] set?
Has an error occurred in the access log of
DB Connection Service?
Is No. of selected records indicated as 0 in
the access log of DB Connection Service?
Was the relevant device value manipulated
in the programmable controller CPU?
Is the number of databases set for the
database server computer sufficient?
(From the previous page)
Corrective action
• Check if [Select/Update/Delete
conditions] are met.
• Check if there is any missing field into
which a value is to be inserted.
• Check if the uniqueness constraint of the
database (PRIMARY KEY constraint) is
violated.
• Check if the value to be stored exceeds
the number of characters defined for the
field.
• When using SQL Server and calling an
SQL statement from the processing
(such as stored procedure) executed in
the database, specify "SET NOCOUNT
ON" before calling.
• If an error has occurred, identify the error
cause and take corrective actions.
Section 10.2 Error Code List
• If no startup data is logged, refer to the
following:
Job will not start up.
• Enable writing to programmable
controller devices.
Section 7.13.4 Changing the job
status
• If an error has occurred, identify the error
cause and take corrective actions.
Section 10.2 Error Code List
• Check if [Select/Update/Delete
conditions] are met.
• Do not manipulate the device value in the
programmable controller CPU at the time
of writing from the MES interface module.
• Correct the set number of databases, or
change the number of [Server service
settings] items to the set number of
databases.
Section 7.9 Server Service Setting
• One database connection must be used
for one item of [Server service settings].
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