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FX3G/FX3U/FX3UC 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
FNC275-FNC279
Data
Transfer 3
32
FNC280-FNC289
High Speed
Processing 2
33
FNC290-FNC299
Extension File
Register
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
33.1 FNC290 – LOADR / Load From ER
Outline
This instruction reads the current values of extension file registers (ER) stored in the attached memory cassette (flash
memory or EEPROM) or EEPROM built into the PLC, and transfers them to extension registers (R) stored in the RAM
in the PLC.
1. Instruction format
2. Set data
3. Applicable devices
Explanation of function and operation
1. 16-bit operation (LOADR and LOADRP)
1) In FX3U/FX3UC 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.
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)
[FX
3G: 1 ≤ n ≤ 24000, FX3U/FX3UC: 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
XYMTCSD
.b KnX KnY KnM KnS T C D R
U\G
V Z Modify K H E "
"P
33
n 333
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