xLadder user manual-V2.0.0.6

6.8.2 ADD - DI & SUB - DI

Input/output Operand

Data type

IN1, IN2

VD, ID, QD, MD, SMD, SD, LD, AC, HC,Constant, *VD, *LD, *AC

Double integer

OUT

VD, ID, QD, MD, SMD, SD, LD, AC, *VD, *LD, *AC

Double integer

ADD - DI: IN1 + IN2 = OUT Both input and output are 32

bits integers.

SUB - DI : IN1 - IN2 = OUT

Both input and output are 32

bits integers.

IN1 + IN2 = OUT

IN1 - IN2 = OUT

SM1.1 is used for indicating overflow errors and illegal

values.

error conditions:

0006

Indirect address

SM1.1

overflow

Special memory bit:

SM1.0

Zero result

SM1.1

overflow

SM1.2

Negative result

Example :

133

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