755
FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
33 Extension File Register Control – FNC290 to FNC299
33.1 FNC290 – LOADR / Load From ER
31
FN
C
275-
FN
C
279
Da
ta
Transf
er 3
32
FN
C
280-
FN
C
289
H
igh Speed
Pr
ocessing 2
33
FN
C
29
0-F
N
C
299
Ext
ens
ion Fi
le
R
egi
ster
34
FN
C
300-
FN
C
305
FX
3U
-C
F-A
D
P
35
SFC•S
TL
Pr
ogr
am
m
ing
36
In
ter
rupt
Functi
on
37
Special D
evice
38
E
rro
r C
ode
A
Ve
rs
ion U
p
In
fo
rm
atio
n
B
Execution T
im
es
Explanation of function and operation
1. 16-bit operation (LOADR and LOADRP)
1) In FX
3U
/FX
3UC
PLCs
The contents (current values) of extension file registers (ER) stored in a memory cassette (flash memory)
having the same numbers with the extension registers specified by
to
+n-1 are read, and
transferred to the extension registers specified by
to
+n-1 stored in the PLC's built-in RAM.
• Reading and transfer are executed in units of device. Up to 32768 devices can be read and
transferred.
• Different from SAVER (FNC291), INITR (FNC292) and LOGR (FNC293) instructions, it is not
necessary to execute this instruction in units of sector.
• If “n” is set to “0”, it is handled as “32768” when the instruction is executed.
S
S
S
S
FNC290
LOADRP
S
n
Command
input
E
E +1
E +2
E +3
E +n-2
E +n-1
+1
+2
+3
+n-2
+n-1
Read
(transfer)
Extension file registers (ER)
inside memory cassette
Extension registers (R)
inside built-in RAM
S
S
S
S
S
S
S
S
S
S
S
S