Mitsubishi FX3U Series Programming Manual

136
FX3G/FX3U/FX3GC/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
4 Devices in Detail
4.10 Extension Register [R] and Extension File Register [ER]
1. Relationship between extension file registers and extension registers
Extension file registers and extension registers have the following positional relationship inside the PLC.
a) FX3U/FX3UC PLCs
b) FX3G/FX3GC PLCs
*1. Memory cassette cannot be connected to FX3GC PLCs.
Extension file register (ER)Extension register (R)
GX Developer
LOGR
instruction
Available in built-in RAM
General-purpose device
(sequence program)
R4096
R0
R32767
SAVER instruction
(sector units)
RWER instruction
(point units)
Available with a memory
cassette mounted
ER2048
ER0
ER32767
ER4096
R2048
2048
points
2048
points
2048
points
R30720 ER30720
1 sector
All points are
written at one
time
2048
points
2048
points
2048
points
16
sectors
Nonvolatile
memory
LOADR instruction
(point units)
INITR instruction
(initialization)
(sector units)
General
applied
instruction
Programming tool
2048
points
ER6144
INITER instruction
(initialization)
(sector units)
INITER
Available in built-in RAM
Extension register (R) Extension file register (ER)
General-purpose device
(sequence program)
General
applied
instruction
All points are
written at one
time
Programming tool
Nonvolatile
memory
LOADR instruction
(point units)
RWER instruction
(arbitrary number of points)
ER23999
ER0R0
R23999
GX Developer
Available in attached memory
cassette or built-in EEPROM
*1

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)