Mitsubishi Electric MELSEC FX3U Programming Manual page 757

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
Explanation of function and operation
1. 16-bit operation (LOADR and LOADRP)
1) In FX /FX
3U 3UC
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
transferred to the extension registers specified by
Command
input
LOADRP
Extension file registers (ER)
inside memory cassette
E S
E S +1
E S +2
S
E +3
E S +n-2
E S +n-1
• 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.
PLCs
FNC290
S n
Read
(transfer)
33 Extension File Register Control – FNC290 to FNC299
33.1 FNC290 – LOADR / Load From ER
to +n-1 stored in the PLC's built-in RAM.
S S
Extension registers (R)
inside built-in RAM
S
S +1
S +2
S +3
+n-2
S
S +n-1
to +n-1 are read, and
S S
31
32
33
34
35
36
37
38
A
B
755