Mitsubishi Q170MCPU, User Manual

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6 INSPECTION AND MAINTENANCE
6.5.2 Battery replacement procedure
When the battery has been exhausted, replace the battery with a new one in
accordance with the procedure shown below.
POINTS
When replacing the battery, pay attention to the following.
(1) Back up the data using MT Developer2 before starting replacement.
(2) Firstly back up the data stored in the Motion controller to the personal
computer which is installed MT Developer2 then replace the battery with a new
one. After setting the battery in the Battery holder, verify the backing up the
data to the personal computer which is installed MT Developer2 and the data
in the Motion controller, confirm the data is not changing.
In the following status, the backup time after power OFF is 3 minutes.
• The lead connector of Q6BAT/Q7BAT is disconnected.
• The lead wire of Q6BAT/Q7BAT is broken.