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FX3UC Series Programmable Controllers
User’s Manual - Hardware Edition
11 Memory Cassette/Battery
11.1 Memory Cassette (FX3U-FLROM-16/64/64L)
11.1.3 Saved Data Content
The following data is saved on the memory cassette.
*1. The total size of the programs + comments + file registers must not exceed the maximum capacity of
the memory cassette.
*2. The maximum number of points for the memory capacity, comments, and file registers, can be
specified when the FX3U(C) programming tool is selected. The maximum number of points cannot be
specified when a programming tool other than the FX3U(C) is selected.
11.1.4 PROTECT switch setting
Reading from and writing to memory cassette operations can be performed by
using the programming tool.
Because sequence programs are written by an electronic format, a special
ROM writer and ultraviolet eraser are not required.
The PROTECT switch must be turned OFF to enable writing.
Item Description Saving Method
Program
Memory
Parameters
• Memory capacity setting
- Memory capacity (default setting: 16k steps)
2k/4k/8k/16k steps (FX
3U-FLROM-16)
2k/4k/8k/16k/32k/64k steps (FX
3U-FLROM-64/64L)
- Comment capacity
- File register capacity
- Buffer memory initial setting capacity
• Device latch range settings (keep device)
• Modem initializing settings, battery-free operation, RUN terminal
settings
• RS/RS2 instructions/computer link function communication settings
• Positioning settings
• BFM default settings
Programming
tool
*2
Sequence
programs
User-created sequence programs
Comments and file registers can
be created in the memory by
setting them in the parameter
memory capacity.
*1
Comments
Max. 6350 points
(0 to 127 blocks,
1 block = 50 points/500 steps)
File registers
Max. 7000 points
(0 to 14 blocks,
1 block = 500 points/500 steps)
Extended file registers ER0 to ER32767 (32768 points)
• Sequence
program
•GX
Developer
PROTECT
switch
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