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8 MAINTENANCE AND INSPECTION
8.3 Battery
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 117 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 118 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. (Page 117
Setting an optional battery using the engineering tool)
Attachment procedure
1. Turn the power supply off.
2. Remove the expansion board connector cover (A in figure below). If an expansion board is installed, remove it.
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 (77))
*1
FX3U-32BL
LOT.14X
…………
(2)
(1)
A
2
5