Mitsubishi Electronics FX3G ユーザーズマニュアル

FX

3S

/FX

3G

/FX

3GC

/FX

3U

/FX

3UC

 Series

Programming Manual - Basic & Applied Instruction Edition

16 External FX Device – FNC 80 to FNC 89

FN
C30
-FN
C3

9

R

ota

tion and 

Shi
ft

FN
C40-FN

C49

D

ata O
perati

on

FNC

50-FNC

59

High-Speed

 

Proc

essing

FM
C60-FN

C69

H

andy 

In

struction

FN
C70-FN

C79

E

xternal

 F

X

 I/O
 

De

vice

FNC

80-FNC

89

External

 FX 

Dev
ice

FNC1
00-
FNC10

9

Dat
a 

Transfer 2

FNC1

10-
FNC139

Fl

oati

ng Poi

nt

FNC14

0-F

N

C

149

Da

ta

 

Operation 2

FNC1

50-
FNC159

Pos
itioning 

Control

Two or more PID instructions can be executed at the same time. (There is no limitation in the number of loops.)
However, make sure that 

, 

 and other operands specified in each instruction are different to each other.

1) In the limit cycle method

- Twenty-nine devices are occupied from the head device specified in 

.

2) In the step response method

- Operation setting (ACT): When bits 1, 2 and 5 are not all "0"

Twenty-five devices are occupied from the head device specified in 

.

- Operation setting (ACT): When bits 1, 2 and 5 are all "0"

Twenty devices are occupied from the head device specified in 

.

For the output value (MV) in the PID instruction, specify a data register outside the latched area.
When specifying a data register in the latched area, make sure to clear the latched (backed up) contents when the
PLC mode is set to RUN using the following program.
Program example

When an operation error occurs, the special auxiliary relay M8067 turns ON, and the error code is stored in the special
data register D8067.

→ For the error code, refer to Section 38.4.

S

3

D

S

3

S

3

S

3

S

3

M8002

Initial pulse

RST

D***

Data register number in the latched area specified in D