AH500 Programming Manual R180 D21~D20 R1 D0 R3.141592 D11~D10 FACOS FDEG Floating-point number Floating-point number Floating-point number BCD DINT D31~D30 0 1 0 8 Y1.15~Y1.0 180 Binary value Binary-coded decimal value Additional remark: 1. The floating-point number specified by the operand S should be within the range between –1.0 and +1.0. If the floating-point number is not within the range, the instruction is not executed, SM0 is ON, and the error code in SR0 is 16#2003. 2. If the value in S exceeds the range of values which can be represented by the floating-point numbers, the instruction is not executed, SM0 is ON, and the error code in SR0 is 16#2013. 6-332