Mitsubishi FX1N Series Programming Manual

FX Series Programmable Controllers Devices in Detail 4
4-33
4.12.4 File Registers
Program memory registers
File registers can be secured in the program memory (EEPROM or EPROM) in units of 500
points. These registers can be accessed with a peripheral device. While the PLC is operating,
data in the file registers can be read to the general-use/ battery backed/ latched registers by
using the BMOV instruction.
File registers are actually setup in the parameter area of the PLC. For every block of 500 file
registers allocated and equivalent block of 500 program steps are lost.
Note: The device range for file registers in the FX
1N,FX2N and FX2NC overlaps with the latched
data registers. The allocation of these devices as file registers ensures that the data is kept
with the program.
Writing to file registers:
• FX1S file register data can only be changed by a personal computer running the
appropriate software.
For details of how to carry out the changes please reference the relevant operation
manual for guidance.
• FX
1N,FX2N and FX2NC file register data can also be changed by the PLC program using
the BMOV instruction.
Special caution when using FX1S:
• No file registers can be modified during RUN.
Available devices:
• Please refer to chapters 6 and 8, where further details of the available devices can be
found.
FX 1S
FX1N FX2N
FX2NC

Mitsubishi FX1N Series Specifications

General

Programming Language	Ladder Logic
Output Type	Relay, Transistor
Operating Temperature	0 to 55°C
Power Supply	100-240V AC or 24V DC
Program Capacity	8K steps
Communication Ports	RS-422
Data Memory	8000 words
High-speed Counters	Up to 6 channels
Expansion Modules	Available
Pulse Output	2 points