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13 DATABASE FUNCTION
13.3 CPU Module Database Access (from External Device) Function
Completion with an error during database access
Do not power off or reset the CPU module during the access to a database of the CPU module. Otherwise, the change is not
reflected on the database that is being executed.
Files created with this function
Do not create, change, and delete the ODBC server setting file (netserver.cfg), database path file (dbmaintainpath.txt), and
error database check file (ErrorDB.txt) created with the CPU module database access function. Otherwise, the CPU module
database access function or database access instruction is completed with an error.
If the above mentioned operations are performed, delete the database folder in the CPU module and create the new one.
Removal of the SD memory card
To remove the SD memory card while the ODBC server is active, execute the SD memory card forced disable and check that
CARD READY LED is off before removing the SD memory card. (Failure to do so may result in a failure of databases.)
Since databases stop after the execution of the SD memory card forced disable, databases of the CPU module cannot be
accessed. (The error code is stored in SD1498.)
To access the databases of the CPU module again, insert the SD memory card and power off and on or reset the CPU
module.
Free space of the SD memory card
To use the CPU module database access function, the SD memory card must have at least 20MB of free space.
When the free space of the SD memory card becomes 20MB or less while the CPU module database access function is used,
SM1497 (Memory card free space flag for CPU module database) turns on. When the free space of the SD memory card
becomes 10MB or less, the ODBC server of the CPU module stops and the error code is stored in SD1498 (Start-up status of
CPU module database).
When the ODBC server stops because the SD memory card does not have enough free space, secure the free space of the
SD memory card using the online operation and power off and on or reset the CPU module. Powering off and on or resetting
the CPU module starts the ODBC server.
When the SD memory card is write-protected
To use the CPU module database access function, the user must ensure that write protection of the SD memory card is off.
When the SD memory card is write-protected, the CPU module database access function cannot update the database and the
error code is stored in SD1498.
Содержание MELSEC iQ-R-R00CPU
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Страница 151: ...9 MONITOR FUNCTION 9 1 Real Time Monitor Function 149 9 MEMO ...
Страница 323: ...18 SEQUENCE SCAN SYNCHRONIZATION SAMPLING FUNCTION 321 18 MEMO ...
Страница 330: ...328 20 ROUTING SETTING 20 3 Precautions MEMO ...
Страница 423: ...26 BASIC CONCEPT 26 8 State Transition of the Redundant System 421 26 MEMO ...
Страница 524: ...522 30 MAINTENANCE AND INSPECTION FOR A REDUNDANT SYSTEM 30 1 Module Replacement in the Redundant System MEMO ...
Страница 1009: ...APPX Appendix 14 List of Available SQL Commands for CPU Module Database Access Function 1007 A MEMO ...
Страница 1014: ...1012 APPX Appendix 15 Added and Enhanced Functions MEMO ...
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