Mitsubishi Electronics FX3G User Manual

FX

3S

/FX

3G

/FX

3GC

/FX

3U

/FX

3UC

 Series

Programming Manual - Basic & Applied Instruction Edition

33 Extension File Register Control – FNC290 to FNC299

FNC277

-F

NC2
79

Da

ta

 

Trans
fer 3

FNC28

0-F

NC
289

H

igh-Speed 

Process

ing 2

FNC2

90-
FNC299

Ex

tensi

on Fi
le

 

Register C

ontrol

FN

C300-

FNC30

5

FX

3U

-C

F-

AD

P

SFC

•STL

Programming

Interrupt 

Function

Sp

ec

ia

l D

evi

ce

E

rror Code

Ve

rsi

on U

p 

Inform

ati

on

Ex

ecuti

on

 T

imes

The table below shows the head device number in each sector:

When a memory cassette is attached, 18 ms is required to initialize one sector. 
(When a memory cassette is not attached, only 1 ms or less is required to initialize one sector.)
When initializing two or more sectors, take either measure shown below.
• Set a large value to the watchdog timer D8000 using the following program

A value acquired by the following procedure can be regarded as the guideline of the watchdog timer set value.
If an acquired value is 200 ms or less, however, it is not necessary to change the watchdog timer set value.
1) Write a program to be executed from GX Works2 to the PLC.

[Online]

→[Write to PLC...]

2) Set the current value of D8000 (unit: ms) to "1000" using the modify value function in GX Works2.

[Debug]

→[Modify Value]

3) Set the PLC mode to RUN, and execute the program. (Execute this instruction also.)
4) Monitor the maximum scan time D8012 (unit: 0.1 ms) using the device/buffer memory batch monitor function in

GX Works2.

5) Set the watchdog timer to the maximum scan time (D8012) or more.

D8012 stores the maximum scan time in increments of 0.1 ms.
Rough guide to the watchdog timer set value D8000 (unit: ms) is the "value stored in D8012 divided by 10" added
by 50 to 100.

Sector 0

R0

R0 to R2047,
ER0 to ER2047

Sector 8

R16384

R16384 to R18431,
ER16384 to ER18431

Sector 1

R2048

R2048 to R4095,
ER2048 to ER4095

Sector 9

R18432

R18432 to R20479,
ER18432 to ER20479

Sector 2

R4096

R4096 to R6143,
ER4096 to ER6143

Sector 10

R20480

R20480 to R22527,
ER20480 to ER22527

Sector 3

R6144

R6144 to R8191,
ER6144 to ER8191

Sector 11

R22528

R22528 to R24575,
ER22528 to ER24575

Sector 4

R8192

R8192 to R10239,
ER8192 to ER10239

Sector 12

R24576

R24576 to R26623,
ER24576 to ER26623

Sector 5

R10240

R10240 to R12287,
ER10240 to ER12287

Sector 13

R26624

R26624 to R28671,
ER26624 to ER28671

Sector 6

R12288

R12288 to R14335,
ER12288 to ER14335

Sector 14

R28672

R28672 to R30719,
ER28672 to ER30719

Sector 7

R14336

R14336 to R16383,
ER14336 to ER16383

Sector 15

R30720

R30720 to R32767,
ER30720 to ER32767

• Extension registers (R) 

[inside the built-in RAM]

• Extension file registers (ER) 

[inside the memory cassette]

H0010

HFFFF

H1234

HFFFF

+1

H0020

HFFFF

+1

H5678

HFFFF

+2

H0011

HFFFF

+2

H90AB

HFFFF

+(2048

×n)-1

HABCD

HFFFF

+(2048

×n)-1

HCDEF

HFFFF

  S

  S

  S

  S

  S

  S

  S

  S

M8002

FNC 12

MOV

K

D8000

Initial pulse