AH500 Programming Manual API 2107 Symbol: S 1 ： Initial device in which the number of characters is stored Word/Double word S 2 ： Value which is converted Word/Double word D ： Initial device in which the conversion result is stored Word Explanation: 1. A decimal point is added to the value in S 2 , the value in S 1 +1 indicates the number of decimal places, and the value in S 1 indicates the number of characters. The conversion result is stored in D . 2. $ STR : The value in S 1 should be within the range between 2 and 8. The value in S 1 +1 should be within the range between 0 and 5, and should be less than or equal to the value in S 1 minus 3.
The value in S 2 should be within the range between -32768 and 32767. S1+1 S1 b15 b0 b7 b8 D D+1 . D+3 D+2 Sign D+4 Automatically stored at the end of the string Suppose the number of characters is 5, the number of decimal places is 1, and the value is -123. The conversion result is as follows.
S2 Binary number 6-460 Instruction code Operand Function D $STR P S , S , D 1 2 Converting the binary number into the string Device X Y M S T C HC D L SM SR E PR K 16# “$” DF S 1 S 2 D Pulse instruction AH500 16-bit instruction (7 steps ) 32-bit instruction (7 steps) AH500 AH500 Number of characters Number of decimal places First ASCII code Sign Third A SCII code Second ASCII code Fifth ASCII code Fourth ASCII code Seventh AS CII code Sixth ASCII code 16#00 (Ending character) First ASCII code Sign Third A SCII code Second ASCII code Fifth ASCII code Fourth ASCII code Seventh AS CII code Sixth ASCII code 16#00 (Ending character)