Mitsubishi Electric Melsec Q Series User Manual page 30

Programmable contoller mes interface module

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1.1 Features

(b) Data to be send to the database are protected even if a communication error

occurs. (DB buffering function)

When an error occurs during performing communication with a database, stored

procedure execution requests or the SQL texts failed to send can be stored in a

CompactFlash card.

After the recovery, the buffered SQL texts or stored procedure execution requests

are automatically sent to the database. (Manual operation is also possible.)

CompactFlash card

CompactFlash card

Figure 1.5 Buffering of send data (SQL text) during a communication error

Disconnected

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Troubleshooting

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