Mitsubishi Electric MELSEC FX3U Programming Manual page 765

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
Program examples
1) In the case of FX
In the example shown below, only extension registers R10 to R19 (in sector 0) need to be updated in the
extension file registers (ER). When X000 is set to ON, sector 0 (head device R0) is written to the
extension file registers 128 points at a time. (128 points are written in one operation cycle)
Program
X000
M0
Instruction execution complete flag
M8029
Operation
Setting data
Extension registers (R)
Device number Current
R0
R1
.
.
.
R10
R11
R12
.
.
.
R19
.
.
.
R99
R100
.
.
.
R2047
PLCs Ver. 1.30 or later and FX
3UC
SET
FNC295
R0
INITERP
FNC 07
FNC291
R0 K128
SAVER
RST
Setting backup data
Extension file registers (ER)
Device number Current value
value
K100 ER0
K105 ER1
. .
. .
. .
K200 ER10
K215 ER11
K400 ER12
. .
. .
. .
K350 ER19
. .
. .
. .
K1000 ER99
HFFFF ER100
. .
. .
. .
HFFFF ER2047
33 Extension File Register Control – FNC290 to FNC299
PLCs Ver. 2.20 or later
3U
M0
(1)
K1
WDTP
(2)
D0
M0
END
Setting backup data
Extension file registers (ER)
Device number Current value
K100
K105
.
.
.
K300
K330
(1)
K350
.
INITER
.
.
instruction
K400
.
.
.
K1000
HFFFF
.
.
.
HFFFF ER2047
33.2 FNC291 – SAVER / Save to ER
ER0 HFFFF
ER1 HFFFF
. .
. .
. .
ER10 HFFFF
ER11 HFFFF
(2)
ER12 HFFFF
. .
SAVER
. .
. .
instruction
ER19 HFFFF
. .
. .
. .
ER99 HFFFF
ER100 HFFFF
. .
. .
. .
HFFFF
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