Filter
Top Products
737
FX3S/FX3G/FX3GC/FX3U/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
33 Extension File Register Control – FNC290 to FNC299
33.5 FNC294 – RWER / Rewrite to ER
31
FNC277-FNC279
Data
Transfer 3
32
FNC280-FNC289
High-Speed
Processing 2
33
FNC290-FNC299
Extension File
Register Control
34
FNC300-FNC305
FX
3U
-CF-ADP
35
SFC•STL
Programming
36
Interrupt
Function
37
Special Device
38
Error Code
A
Version Up
Information
B
Execution Times
Errors
An operation error is caused in the following cases; The error flag M8067 turns ON, and the error code is stored in
D8067.
• When the last device number to be transferred exceeds “32767
*1
” (error code: K6706)
At this time, data is read (and transferred) until the last device number R32767
*1
.
• When a memory cassette is not connected (error code: K6771)
*2
• When the protect switch of the memory cassette is set to ON (error code: K6770)
*1. The last device number is 23,999 in FX
3G/FX3GC PLCs.
*2. An operation error is not caused in FX
3G PLC because the contents of extension file registers stored in the
EEPROM built into the PLC are read if a memory cassette is not connected.
Program example
In the program example shown below, the contents of extension registers R10 to R19 (sector 0) are transferred to
extension file registers (ER) when X000 turns ON.
Program
Operation
M0
MOV D8000 D200
X000
K47 D8000
PLS M0
END
FNC294
RWER
R10 K10
ADD D8000
MOV D200 D8000
FNC 07
WDT
FNC 07
WDT
R0 K100
R1 K105
R10 K200
R11 K215
R12 K400
R19 K350
R99 K1000
R100 HFFFF
HFFFFR2047
ER0 K100
ER1 K105
ER10 K200
ER11 K215
ER12 K400
ER19 K350
ER99 K1000
ER100 HFFFF
HFFFFER2047
Write
(when X000
turns ON)
Setting data
Device number
Current
value
Extension registers (R)
Setting backup data
Extension file registers
(ER)
Device number
Current
value
Setting data (A)
Changed data
Unused
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.