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FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
4 Devices in Detail
4.10 Extension Register [R] and Extension File Register [ER]
1
Introduction
2
Overview
3
Instruction
List
4
Devices
in Detail
5
Specified the
Device &
Constant
6
Before
Programming
7
Basic
Instruction
8
FNC00-FNC09
Program Flow
9
FNC10-FNC19
Move & Compare
10
FNC20-FNC29
Arith. & Logic
Operation
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
3U/FX3UC PLCs
b) FX
3G 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