Mitsubishi Electronics FX3G User Manual
735
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
Series
Programming Manual - Basic & Applied Instruction Edition
33 Extension File Register Control – FNC290 to FNC299
33.5 FNC294 – RWER / Rewrite to ER
31
FNC277
-F
NC2
79
79
Da
ta
Trans
fer 3
fer 3
32
FNC28
0-F
NC
289
289
H
igh-Speed
Process
ing 2
33
FNC2
90-
FNC299
FNC299
Ex
tensi
on Fi
le
le
Register C
ontrol
34
FN
C300-
FNC30
5
FX
3U
-C
F-
AD
P
35
SFC
•STL
Programming
36
Interrupt
Function
37
Sp
ec
ia
l D
evi
ce
38
E
rror Code
A
Ve
rsi
on U
p
Inform
ati
on
B
Ex
ecuti
on
T
imes
Cautions
1. Cautions on writing data to a memory cassette (flash memory) for FX
3U
/FX
3UC
PLCs
Memory cassettes use flash memory. Note the following contents when writing data to extension file registers in a
memory cassette with the RWER (FNC294) instruction.
• Though extension file registers to be written can be specified arbitrarily, writing is executed in sector units.
memory cassette with the RWER (FNC294) instruction.
• Though extension file registers to be written can be specified arbitrarily, writing is executed in sector units.
It takes about 47 ms to write one sector. If the extension file registers to be written are located in two sectors, the
instruction execution time will be about 94 ms.
Make sure to change the set value of the watchdog timer D8000 before executing this instruction.
instruction execution time will be about 94 ms.
Make sure to change the set value of the watchdog timer D8000 before executing this instruction.
The table below shows the head device number in each sector:
• Do not turn OFF the power while this instruction is being executed. If the power is turned OFF, execution of this
instruction may be aborted. If execution is aborted, the data may be lost. Make sure to back up the data before
executing this instruction.
executing this instruction.
→ For the backup method, refer to the next page.
2. Cautions on writing data to a memory cassette (EEPROM) for FX
3G
PLC
Memory cassettes adopt the EEPROM. Note the following contents when writing data to extension file registers in a
memory cassette using the RWER (FNC294) instruction.
• Do not turn OFF the power while this instruction is being executed. If the power is turned OFF, execution of this
memory cassette using the RWER (FNC294) instruction.
• Do not turn OFF the power while this instruction is being executed. If the power is turned OFF, execution of this
instruction may be aborted. If execution is aborted, the data may be lost. Make sure to back up the data before
executing this instruction.
executing this instruction.
→ For the backup method, refer to the next page.
Sector number
Device range
Sector number
Device range
Sector 0
ER0 to ER2047
Sector 8
ER16384 to ER18431
Sector 1
ER2048 to ER4095
Sector 9
ER18432 to ER20479
Sector 2
ER4096 to ER6143
Sector 10
ER20480 to ER22527
Sector 3
ER6144 to ER8191
Sector 11
ER22528 to ER24575
Sector 4
ER8192 to ER10239
Sector 12
ER24576 to ER26623
Sector 5
ER10240 to ER12287
Sector 13
ER26624 to ER28671
Sector 6
ER12288 to ER14335
Sector 14
ER28672 to ER30719
Sector 7
ER14336 to ER16383
Sector 15
ER30720 to ER32767
M100
FNC 12
MOV
D8000
D200
Writing command input
PLS
M100
FNC 20
ADD
D8000
K47
*1
D8000
FNC294
RWER
R1000
K100
FNC 07
WDT
*1 Number of sectors to be written
× 47 ms
The contents of R1000 to R1099 in the sector 0 are
written to ER1000 to ER1099.
MOV
D200
D8000
FNC 07
WDT