DVP-ES3 Series Programming Manual Symbol S ： Source value D ： Arctangent value Explanation 1. This instruction finds the arctangent of the value in S and stores it in D . Arctangent value=tan -1 _6 2. The following graph shows the relation between tangent and arctangent values. 3. If the conversion result is zero, SM600 is ON. 6-452 API Instruction code Operand Function 1505 FATAN P S, D Arctangent of a floating-point number Device X Y M S T C HC D FR SM SR E K 16# “$” F S D BOOL WORD DWORD LWORD UINT INT DINT LINT REAL LREAL TMR CNT STRING Data type S D Pulse instruction 16-bit instruction 32-bit instruction ES3 - ES3