Rievtech PR-12 Series, User Manual And Programmers Manual

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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.
In LAD and FBD
：
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
：