Toshiba 6F3B0253 user manual FUN Subtraction

6F3B0253

7. Instructions

FUN 028

−

Subtraction

Expression

Input − [ A − B → C ]− Output

Function

When the input is ON, the data of B is subtracted from the data of A, and the result is stored in C. If the result is greater than 32767, the upper limit value 32767 is stored in C, and the output is turned ON. If the result is smaller than -32768, the lower limit value -32768 is stored in C, and the output is turned ON.

Execution condition

Input	Operation	Output
OFF	No execution	OFF
ON	Execution (normal)	OFF
	Execution (overflow or underflow occurred)	ON

Operand

Name

Device

Register

Constant

Index

X

Y

R

S

T.

C.

XW

YW

RW

SW

T

C

D

I

J

K

A

Minuend

√

√

√

√

√

√

√

√

√

√

√

√

B

Subtrahend

√

√

√

√

√

√

√

√

√

√

√

√

C

Difference

√

√

√

√

√

√

√

√

√

√

Example

When R005 is ON, the constant data 2500 is subtracted from the data of D0200, and the result is stored in RW50.

If the data of D0200 is 15000, the result 12500 is stored in RW50, and R010 is turned OFF.

D0200

Constant

15000

− RW50

2500

12500

R010 is OFF

If the data of D0200 is -31000, the result is smaller than the limit value, therefore -32768 is stored in RW50, and R010 is turned ON.

D0100

Constant

-31000

2500

Underflow

− RW50

-32768

R010 is ON

144 T1-16S User’s Manual