Mitsubishi Electronics FX3S 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

19 Data Operation 2 – FNC140 to FNC149
19.1 FNC140 – WSUM / Sum of Word Data

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

• In the 32-bit operation, the acquired sum is 64-bit data. FX

3U

 and FX

3UC

 PLCs cannot handle 64-bit data. When the 

sum is within the numeric range of 32-bit data (K-2,147,483,648 to K2,147,483,647), however, FX

3U

 and FX

3UC

 

PLCs can handle the low-order 32 bits of 32-bit data as the sum while ignoring the high-order 32 bits.

• Note that the 32-bit value [n+1, n] is valid when D or R is specified as "n" in a 32-bit instruction.

In the case of "DWSUM D0 D100 R0", "n" is [R1, R0].

An operation error is caused in the following cases; The error flag M8067 turns ON, and the error code is stored in
D8067.

• When "n" points starting from 

 are outside the specified device range (error code: K6706)

• When "n" is smaller than or equivalent to "0" (error code: K6706)

• When 

 are outside the specified device range. (error code: K6706)

In the program shown below, the sum of 16-bit data stored in D10 to D14 is stored in [D101, D100].

CCD (FNC 84)

Check code
Calculates the sum of 16-bit data in units of byte (8 bits) and the horizontal parity.

   

S

   

D

X010

FNC140

WSUMP

D10

D100

[D101,D100]

K5

WSUMP

instruction

K4500
K2500

K-3276

K6780
K4444

D10

K14948

END

D11
D12
D13
D14