→Overflow

An overflow is the exceeding of a capacity limit resp. of a number range. An overflow in logi.CAD 3 occurs when the result of a calculation is too large to still be interpreted/represented correctly. The valid number range is determined by the upper and lower limit of a →data type. See "Supported data types (in ST)" for the appropriate upper and lower limits.
For instance, adding value 1 to the largest SINT value 127 results in an overflow. And subtracting the value 1 from the smallest SINT value -128 results in a negative overflow.