FX3U Series Programmable Controllers
User’s Manual - Hardware Edition
439
22 FX3U-32BL (Battery)
22.4 Battery-Free Operation
21
Memory
Cassette
22
Battery
A
Special Devices
(M8000-,D8000-)
B
Instruction List
C
Character-code
D
Discontinued
models
22.4 Battery-Free Operation
FX3U series operation is possible without a battery (PLC’s internal battery removed) when the following
conditions are satisfied.
→ Refer to the FX
3U / FX3UC Programming Manuals for details concerning battery-free operation.
1. A memory cassette must be installed.
2. The following devices must not be used as "keep" devices.
Auxiliary relays, state (for annunciator included), timers (cumulative type), counters, data register "keep"
device, extended registers.
3. The sampling trace function must be disabled.
4. The clock function must be disabled.