Operation Without Mounting Battery - Mitsubishi Electric Melsec Q Series User Manual

4
SETTINGS AND PROCEDURE TO OPERATION

4.9 Operation without Mounting Battery

This section explains operation without mounting a battery to the MES interface module.
(1) Shutdown operation required when the programmable controller is powered
OFF
Make sure to perform shutdown operation when the programmable controller is
powered OFF regardless of whether the battery is mounted or not.
Otherwise, data such as setting information and system data may be lost.
(a) Operation procedure
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File access stop request (Y2)
File access status (X2)
Figure 4.19 Shutdown operation required when the programmable controller is powered OFF
(2) Making battery error undetected during operation without battery
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Stop file access.
(Turn the File access stop request (Y2) ON from OFF.)
Confirm that file access has stopped.
(Check the File access status (X2) is turned ON.)
Power OFF the programmable controller CPU.
(In operation)
If the shutdown operation is not performed before powering OFF a programmable
controller, data in the CompactFlash card being accessed may be corrupted or a
file system error may occur.
A battery error occurs when the file protection battery is not mounted to the
QJ71MES96 MES interface module.
• "1 (ON)" is written to the Battery status area (Buffer memory address: 7).
• The ERR. LED is turned ON, and ERR. LED status (X10) and Other error
(X1C) are turned ON.
Battery errors are not detected by turning "ON" the battery error detection setting
(Switch 2 (Bit 2)) with intelligent function module switch setting of GX Developer.
Refer to the following for the intelligent function module switch settings of GX
Developer.
Section 4.5 Intelligent Function Module Switch Settings
(During stop)
Power OFF the programmable controller.
4.9 Operation without Mounting Battery
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