Mitsubishi Electric MELSEC FX Series - Page 783

7 Applied Instructions
7.27 Extension File Register Control
781
FXCPU Structured Programming Manual
(Basic & Applied Instruction)
1
Outline
2
Instruction List
3
Configuration of Instruction
4
How to Read Explanation of Instructions
5
Basic Instruction
6
Step Ladder Instructions
7
Applied Instructions
8
Interrupt Function and Pulse Catch Function
A
Relationships between devices and addresses
Function and operation explanation
1. 16-bit operation (RWER)
1) For the FX3U and FX3UC PLCs
The contents (current values) of "n" extension registers (R) starting from are written (transferred) to
extension file registers having the same device numbers in a memory cassette (flash memory).
- When "n" is set to "0", it is handled as "32768" when the instruction is executed.
2) For the FX3G PLCs
a) When connecting a memory cassette
The contents (current values) of the "n" points of extension registers (R) starting from are written
(transferred) to the extension file registers (ER) having the same numbers as the extension registers
(R) in the memory cassette (EEPROM).
b) When not connecting a memory cassette
The contents (current values) of the "n" points of extension registers (R) starting from are written
(transferred) to the extension file registers (ER) having the same numbers as the extension registers
(R) in the PLC's built-in EEPROM.
RWERP
EN ENO
s
n
Command
input
Device of extension register storing data
Number of written (transferred) devices
E
E+1
E+2
E
Write (transfer)
*1
Extension file registers (ER)
inside memory cassette
Extension registers (R)
inside built-in RAM
*1. All points specified by the instruction are written (transferred).
s
s
s
s s
s
s
s
+1
+2
+
n
-1
s
+
n
-1
E
E+1
E+2
E
Write (transfer)
*1
s
s
s
s s
s
s
s
+1
+2
+
n
-1
s
+
n
-1
Extension file registers (ER)
inside memory cassette
Extension registers (R)
inside built-in RAM
*1. All points specified by the instruction are written (transferred).
E
E+1
E+2
E
Write (transfer)
*1
s
s
s
s s
s
s
s
+1
+2
+
n
-1
s
+
n
-1
Extension file registers (ER)
inside PLC's built-in EEPROM
Extension registers (R)
inside built-in RAM
*1. All points specified by the instruction are written (transferred).