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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]
2. Sectors of extension registers and extension file registers
In FX3U/FX3UC PLCs, extension registers and extension file registers are divided into sectors in the data configuration.
One sector consists of 2,048 devices. The table below shows the head device number in each sector.
In FX
3G
PLCs, sectors are not provided for extension registers and extension file registers.
Sector No.
Head
device No.
Device range Sector No.
Head
device No.
Device range
Sector 0 R0
ER0 to ER2047, R0 to R2047
Sector 8 R16384
ER16384 to ER18431, R16384 to R18431
Sector 1 R2048
ER2048 to ER4095, R2048 to R4095
Sector 9 R18432
ER18432 to ER20479, R18432 to R20479
Sector 2 R4096
ER4096 to ER6143, R4096 to R6143
Sector 10 R20480
ER20480 to ER22527, R20480 to R22527
Sector 3 R6144
ER6144 to ER8191, R6144 to R8191
Sector 11 R22528
ER22528 to ER24575, R22528 to R24575
Sector 4 R8192
ER8192 to ER10239, R8192 to R10239
Sector 12 R24576
ER24576 to ER26623, R24576 to R26623
Sector 5 R10240
ER10240 to ER12287, R10240 to R12287
Sector 13 R26624
ER26624 to ER28671, R26624 to R28671
Sector 6 R12288
ER12288 to ER14335, R12288 to R14335
Sector 14 R28672
ER28672 to ER30719, R28672 to R30719
Sector 7 R14336
ER14336 to ER16383, R14336 to R16383
Sector 15 R30720
ER30720 to ER32767, R30720 to R32767