AH500 Programming Manual API 0202 Symbol: S ： Source device Word/Double word D ： Conversion result Double word Explanation: 1. The instruction is used to convert the binary integer into the single-precision floating-point number. 2. The operand S used in the instruction FLT can not be the 32-bit counter. 3. The source device S used in the instruction FLT occupies one register, and D used in FLT occupies two registers. 4. The source device S used in the instruction DFLT occupies two registers, and D used in DFLT also occupies two registers.
When the absolute value of the conversion result is larger than the value which can be represented by the maximum floating-point number, SM602 is ON, and the maximum floating-point number is stored in D . When the absolute value of the conversion result is less than the value which can be represented by the minimum floating-point number, SM601 is ON, and the minimum floating-point number is stored in D . When the conversion result is zero, SM600 is ON. Example 1: 1. When X0.0 is ON, the binary integer in D0 is converted into the single-precision floating-point number, and the conversion result is stored in (D13, D12). 2.
When X0.1 is ON, the binary integer in (D1, D0) is converted into the single-precision floating-point number, and the conversion result is stored in (D21, D20). 3. Suppose the value in D0 is 10. When X0.0 is ON, 10 is converted into the single-precision floating-point number 16#41200000, and 16#41200000 is stored in the 32-bit register (D13, D12). 4. Suppose the value in the 32-bit register (D1, D0) is 100,000. When X0.1 is ON, 100,000 is converted into the single-precision floating-point number 16#47C35000, 16#47C35000 is stored in the 32-bit register (D21, D20).
6-78 Instruction code Operand Function D FLT P S, D Converting the binary integer into the binary floating-point number Device X Y M S T C HC D L SM SR E PR K 16# “$” DF S D Pulse instruction 16-bit instruction (5 steps) 32-bit instruction (5 steps) AH500 AH500 AH500