8 MAINTENANCE AND INSPECTION
8.3 Battery
137
8
8.3
Battery
Part names
The Latch device memory and clock data upon power interruption. The battery is not incorporated in the CPU module during
shipment from the factory. Order it if necessary. Parameter setting is required to back up the device memory and clock data.
(
Page 138 Setting an optional battery using the engineering tool)
Specifications
The following shows functional specifications of the battery.
*1 The life of the battery changes with respect to ambient temperature. (
Page 138 Battery life and replacement guidelines)
Battery attachment
The battery is not incorporated in the CPU module during shipment from the factory. To use the battery, attach it following the
procedure below. Parameter setting is required to back up the device memory and clock data using the battery. (
138 Setting an optional battery using the engineering tool)
Attachment procedure
1.
Turn the power supply off.
2.
Remove the battery cover (A in the figure below).
3.
Push the battery into the battery holder (B in the figure below).
4.
Insert the battery connector (C in the figure below) of the battery.
5.
Attach the battery cover.
External appearance
No.
Name
Description
(1)
Connector
Connected to the battery connector of the CPU module.
(2)
Nameplate
Displays the model name and lot number.
Item
FX3U-32BL
Battery type
Lithium manganese dioxide battery
Nominal voltage
3.0 V
Life
Standard life: 5 years (at ambient temperature of 25
(2)
(1)
A
2
5
C
B
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