6. Function blocks6.1 Manufacturer function blocks6.1.3.2 AR - ArithmeticGeneraleasyE4 base devices provide 32 arithmetic function blocks,AR01 through AR32. These function blocks can be used to carryout the four basic arithmetic operations: addition, subtraction,multiplication, and division.Operating principleThe function block will apply the selected arithmetic operation to the values at functionblock inputs I1 and I2. If the calculation result exceeds the value range that can be rep-resented, overflow signal contact CY will close and function block output QV will con-tain the value of the last valid operation. When the function block is called for the firsttime, the value at function block output QV will equal zero.The function block and its parametersFunction block inputsDescription Note(Bit)EN 1: Activates the function block. The checkbox for theFunction block release by EN is necessaryparameter must first be enabled(DWord)I1 Operand 1 Integer value range:-2,147,483,648 to +2,147,483,647I2 Operand 2Assigning operandsYou can assign the following operands to the function block inputs that are numericinputs.Operands Value inputsConstant, timer constant xMD, MW, MB - Markers xNB, NW, ND - NET markers xnNB, nND, nND- NET markersNET stations nxIA - Analog input xQA - Analog output xQV - QV - Numeric output of a FB xYou can assign the following operands to the function block inputs that are bit inputs:250 easyE4 11/18 MN050009 EN www.eaton.com
