Mitsubishi Electronics FX3G User Manual

325

FX

3S

/FX

3G

/FX

3GC

/FX

3U

/FX

3UC

Series

Programming Manual - Basic & Applied Instruction Edition

12 Data Operation – FNC 40 to FNC 49

12.4 FNC 43 – SUM / Sum of Active Bits

11

FN
C30
-FN
C3

9

R

ota

tion and

Shi
ft

12

FN
C40-FN

C49

D

ata O
perati

on

13

FNC

50-FNC

59

High-Speed

Proc

essing

14

FM
C60-FN

C69

H

andy

In

struction

15

FN
C70-FN

C79

E

xternal

F

X

I/O

De

vice

16

FNC

80-FNC

89

External

FX

Dev
ice

17

FNC1
00-
FNC10

9

Dat
a

Transfer 2

18

FNC1

10-
FNC139

Fl

oati

ng Poi

nt

19

FNC14

0-F

N

C

149

Da

ta

Operation 2

20

FNC1

50-
FNC159

Pos
itioning

Control

12.4

FNC 43 – SUM / Sum of Active Bits

Outline

This instruction counts the number of "1" (ON) bits in the data of a specified device.

1. Instruction format

2. Set data

3. Applicable devices

S1: This function is supported only in FX

3G

/FX

3GC

/FX

3U

/FX

3UC

PLCs.

S2: This function is supported only in FX

3U

/FX

3UC

PLCs.

Explanation of function and operation

1. 16-bit operation (SUM and SUMP)

The number of bits in the ON status in

is counted, and stored to

.

• When all bits are OFF in

, the zero flag M8020 turns ON.

Operand type

Description

Data type

Word device number storing the source data

16- or 32-bit binary

Word device number storing the result data

16- or 32-bit binary

Oper-

and

Type

Bit Devices

Word Devices

Others

System User

Digit Specification

System User

Special

Unit

Index

Con-
stant

Real

Number

Charac-

ter String

Pointer

X Y M T C S D .b KnX KnY KnM KnS T C D

R U \G

V Z Modify K H

E

" "

P

S1

S2

S1

S2

DSUM

DSUMP

Mnemonic

Operation Condition

P

FNC 43

SUM

D

16-bit Instruction

5 steps SUM

SUMP

Mnemonic

Operation Condition

Continuous

Operation
Pulse (Single)

Operation

32-bit Instruction

9 steps

Continuous

Operation
Pulse (Single)

Operation

S

1

S

D

S

1

S

S

2

D

D

1

S

D

1

D

D

1

S

Number of bits in the

ON status in

→

S

D

Command

input

FNC 43

SUM

S

D

Before

execution

After

execution

S

D

S

D

K21847

K0

K21847

K9

Word data

16-bit data

0 1 0 1 0 1 0 1 0 1 0 1 0 1 1 1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

b0

b1

b2

b3

b4

b5

b6

b7

b8

b9

b10

b11

b12

b13

b14

b15

0 1 0 1 0 1 0 1 0 1 0 1 0 1 1 1

b0

b1

b2

b3

b4

b5

b6

b7

b8

b9

b10

b11

b12

b13

b14

b15

1

0

0

1

0

0

0

0

0

0

0

0

0

0

0

0

1

2

3

←

4

←

5

←

6

←

7

←

8

←

9

(Number of "1" (ON))

32 16 8 4 2 1