AH500 Programming Manual The addition of double-precision floating-point numbers: When X0.0 is ON, the addend 16#4008D70A3D70A3D7 in (D23, D22, D21, D20) is added to the augend 16#3FF7333333333333 in (D13, D12, D11, D10), and the sum 16# 40123851EB851EB8 is stored in (D33, D32, D31, D30). Additional remark: If the value in S 1 or the value in S 2 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. 6-46