Rievtech PR-12 Series, User Manual And Programmers Manual

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6.8 Integer operations
6.8.1 ADD-I&SUB-I
Input/output Operand Data type
IN1, IN2 VW, IW, QW, MW, SW, SMW, T, C, AC, LW, AIW,constant, *VD, *LD, *AC Integer
OUT VW, IW, QW, MW, SW, SMW, T, C, LW, AC, *VD, *LD, *AC Integer
ADD-I: IN1 + IN2 = OUT Both input and output are 16
bits integers.
SUB-I
：
IN1 -IN2 = OUT
Both input and output are 16 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