Mitsubishi FX3U Series Programming Manual

724
FX3G/FX3U/FX3GC/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
33 Extension File Register Control – FNC290 to FNC299
33.5 FNC294 – RWER / Rewrite to ER
2) In FX3G/FX3GC PLCs
a) When a memory cassette is connected (A memory cassette can be connected only to FX3G PLC.)
The contents (current values) of “n” extension registers (R) starting from are written (transferred) to extension
file registers having with same device numbers in a memory cassette (flash memory).
b) When a memory cassette is not connected
The contents (current values) of "n" extension registers (R) starting from are written (transferred) to
extension file registers which are stored in the EEPROM built into the PLC and have the same device
numbers.
FNC290
RWERP
S  n
Command
input
E
E +1
E +2
E +n-1
+1
+2
+n-1
*1
*1 All points specified by the instruction are written (transferred).
Write
(transfer)
Extension file registers (ER)
inside memory cassette
Extension registers (R) inside
built-in RAM
S 
S 
S 
S 
S 
S 
S 
S 
S
FNC290
RWERP
S  n
Command
input
E
E +1
E +2
E +n-1
+1
+2
+n-1
*1
*1 All points specified by the instruction are written (transferred).
Write
(transfer)
Extension registers (R) inside
built-in RAM
S 
S 
S 
S 
S 
S 
S 
S 
Extension file registers (ER)
inside built-in EEPROM

Mitsubishi FX3U Series Specifications

General

Model	FX3U Series
Program Memory	64k steps
Execution Speed	0.065 μs/basic instruction
Type	PLC (Programmable Logic Controller)
Power Supply	100-240V AC
I/O Points	Up to 384
Communication	USB
Expansion	Supported via expansion modules
High-Speed Counters	Up to 6 channels
Analog Input/Output	Available via expansion modules
Temperature Range	0 to 55°C
Programming Language	Ladder Logic, Structured Text
Built-in Functions	PID control
Humidity	5 to 95% (non-condensing)