Mitsubishi Electric MELSEC FX Series - Page 762

7 Applied Instructions
7.27 Extension File Register Control
760
FXCPU Structured Programming Manual
(Basic & Applied Instruction)
Function and operation explanation
1. 16-bit operation (LOADR/LOADRP)
1) For the FX3U and 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 (R) 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, INITR and LOGR 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.
2) For the FX3G PLCs
a) When connecting to a memory cassette
The contents (current values) of extension file registers (ER) stored in a memory cassette (EEPROM)
having the same numbers with the extension registers (R) 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 24000 devices can be read and transferred.
LOADRP
EN ENO
s
n
Command
input
Device of extension register to which data is to be transferred
Number of points to be read (transferred)
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
ss
s
s
s
s
s
E
E+1
E+2
E+3
E+n-2
E+n-1
+1
+2
+3
+n-2
+n-1
Read (transfer)
s
s
s
s
s
ss
s
s
s
s
s
Extension file registers (ER)
inside memory cassette
Extension registers (R)
inside built-in RAM