Battery Replacement - Mitsubishi Electric MELSEC Q Series User Manual

4 SET-UP AND PROCEDURE BEFORE OPERATION

4.10.3 Battery replacement

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This section explains the battery replacement of the Web server module.
The battery of the Web server module is used for file protection.
It is required to replace the battery when the voltage of the Web server module battery
has dropped.
(1) Checking the Web server module for a battery voltage drop
(a) Check for a battery voltage drop in the battery status area (buffer memory:
7).
(b) The following results at battery error.
1) "1 (ON)" is written to the battery status area (buffer memory: 7).
2) The ERR. LED turns on, and ERR. LED status (X10) and other error
(X1C) turn on.
The file contents will not be erased as soon as the battery error occurs, but
may be erased if the battery error occurrence is overlooked.
(c) Finish battery replacement while the total of the latch time after Battery
status area has turned on is within the specified time.
MELSEC-Q
Turns Y100 on
when battery
error occurs.
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