Mitsubishi FX3G Series Programming Manual page 138

FX /FX /FX /FX
3G 3U 3GC 3UC
Programming Manual - Basic & Applied Instruction Edition
1. Relationship between extension file registers and extension registers
Extension file registers and extension registers have the following positional relationship inside the PLC.
a) FX /FX
3U
General-purpose device
(sequence program)
b) FX /FX
3G
General-purpose device
(sequence program)
*1. Memory cassette cannot be connected to FX
136
Series
PLCs
3UC
Extension register (R)
Available in built-in RAM
R0
2048
points
R2048
2048
General
points
applied
instruction R4096
2048
points
INITER
LOGR
instruction
INITR instruction
(initialization)
(sector units)
R30720
R32767
PLCs
3GC
Extension register (R)
Available in built-in RAM
R0
General
applied
instruction
R23999
4.10 Extension Register [R] and Extension File Register [ER]
SAVER instruction
(sector units)
RWER instruction
(point units)
LOADR instruction
(point units)
INITER instruction
(initialization)
(sector units)
All points are
written at one
time
Programming tool
GX Developer
RWER instruction
(arbitrary number of points)
LOADR instruction
(point units)
All points are
written at one
time
Programming tool
GX Developer
PLCs.
3GC
Extension file register (ER)
Available with a memory
cassette mounted
ER0
2048
1 sector
points
ER2048
2048
points
ER4096
2048
points
ER6144
2048
points
ER30720
ER32767
Nonvolatile
memory
Extension file register (ER)
Available in attached memory
cassette or built-in EEPROM
Nonvolatile
memory
4 Devices in Detail
16
sectors
*1
ER0
ER23999