Logix5000 Controllers General Instructions - SLAC Confluence

640 Common AttributesREAL to an integerTo convert a REAL value to an integer value, the controller rounds thefractional part and truncates the upper portion of the non-fractionalpart. If data is lost, the controller sets the overflow status flag.Numbers round as follows:• Numbers other than x.5 round to the nearest whole number.• X.5 rounds to the nearest even number.The following example show the result of converting REAL values toDINT values.EXAMPLEConversion of REAL values to DINT valuesThis REAL ValueConverts To This DINT Value-2.5 -2-1.6 -2-1.5 -2-1.4 -11.4 11.5 21.6 22.5 2IMPORTANTThe arithmetic status flags are set based on the value beingstored. Instructions that normally do not affect arithmeticstatus keywords might appear to do so if type conversionoccurs because of mixed data types for the instructionparameters. The type conversion process sets the arithmeticstatus keywords.Publication 1756-RM003I-EN-P - January 2007