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754
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
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
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, FX
3U
/FX
3UC
: 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