Toshiba PROSEC T1 T1S, 6F3B0250 user manual FUN Double-word subtraction

6F3B0250

7. Instructions

FUN 032

D-

Double-word subtraction

Expression

Input -[ A+1×A D- B+1×B ® C+1×C ]- Output

Function

When the input is ON, the double-word data of B+1×B is subtracted from A+1×A, and the result is stored in C+1×C. The data range is -2147483648 to 2147483647.

If the result is greater than 2147483647, the upper limit value 2147483647 is stored in C+1×C, and the output is turned ON. If the result is smaller than -2147483648, the lower limit value -2147483648 is stored in C+1×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

Ö

Ö

Ö

Ö

Ö

Ö

Ö

Ö

B

Subtrahend

Ö

Ö

Ö

Ö

Ö

Ö

Ö

Ö

C

Difference

Ö

Ö

Ö

Ö

Ö

Ö

Example

When R005 is ON, the double-word data of RW25×RW24 is subtracted from the double-word data of D0101×D0100, and the result is stored in D0103×D0102.

If the data of D0101×D0100 is 1580000 and the data of RW25×RW24 is 80000, the result 1500000 is stored in D0103×D0102, and R010 is turned OFF. (No overflow/underflow)

D0101×D0100

RW25×RW24

1580000

- D0103×D0102

80000

1500000

R010 is OFF

166 T1/T1S User’s Manual

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