708
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
33.1
FNC290 – LOADR / Load From ER
Outline
This instruction reads the current values of extension file registers (ER) stored in a memory cassette (flash
memory), and transfers them to extension registers (R) stored in the PLC's built-in RAM.
1. Instruction format
2. Set data
3. Applicable devices
Explanation of function and operation
1. 16-bit operation (LOADR and LOADRP)
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.
Operand Type
Description
Data Type
Device number of extension register (transfer destination) to which data is to be
transferred
(The extension file register having the same number is handled as the data
transfer source.)
16-bit binary
n
Number of points to be read (transferred) [0
≤
n
≤
32767]
Oper-
and
Type
Bit Devices
Word Devices
Others
System User
Digit Specification
System User
Special
Unit
Index
Con-
stant
Real
Number
Charac-
ter String
Pointer
X Y M T C S D
.b KnX KnY KnM KnS
T
C
D
R U
\G
V
Z Modify K
H
E
"
"
P
3
3
n
3
3 3
FNC 290
LOADR
Mnemonic
Operation Condition
16-bit Instruction
5 steps
LOADR
LOADRP
Mnemonic
Operation Condition
Continuous
Operation
Pulse (Single)
Operation
32-bit Instruction
⎯
⎯
S
S
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
Содержание FX3U Series
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