F78_DA2BIN

Converts ASCII code that expresses the decimal digits, starting from the 16-bit area specified by s1_Start to 32-bit data as specified by s2_Number. The converted result is stored in the area starting from the 32-bit area specified by d. s2_Number specifies the number of bytes used to express the destination data using decimals.

Parameters

Input

s1_Start (WORD, INT, UINT)

starting 16-bit area for ASCII code (source)

s2_Number (INT)

specifies number of source data bytes to be converted

Output

d (DWORD, DINT, UDINT, DATE, TOD, DT)

area for 32-bit data storage (destination)

Remarks

• Instead of using this F instruction, we recommend using the corresponding FP7 instruction: FP_ASCII_TO_DEC

• The ASCII codes being converted should be stored in the direction of the last address in the specified area.

• If the area specified by s1_Start and s2_Number is more than that required by the data you want to convert, place "0" (ASCII HEX code: 16#30) or "SPACE" (ASCII HEX code: 16#20) in the extra bytes.

• ASCII codes with signs (such as +: 16#2B and -: 16#2D) are also converted. The + codes can be omitted.

• Example of converting an ASCII code indicating a negative number

  

  1.  (1) ASCII code
  2.  (2) Code
  3.  (3) Extra byte
  4.  (4) Range specified by s2 (10 bytes)
  5.  (5) F78_DA2BIN instruction execution
  6.  (6) Converted result

• ASCII HEX code to express decimal characters:

  ASCII HEX code	Decimal characters
  16#20 16#2B 16#2D 16#30 16#31 16#32 16#33 16#34 16#35 16#36 16#37 16#38 16#39	SPACE + - 0 1 2 3 4 5 6 7 8 9

Error flags

sys_bIsOperationErrorHold (turns to TRUE and remains TRUE)

• if the number of bytes specified by s2_Number exceeds the area specified by s1_Start.

• if the data specified by s2_Number is recognized as "0".

• if the converted result exceeds the area specified by d.

• if the converted result exceeds the 32-bit area.

• if ASCII code not corresponding to decimal numbers (0 to 9) or ASCII characters (+, -, and SPACE) is specified.

sys_bIsOperationErrorNonHold (turns to TRUE for one scan)

• if the number of bytes specified by s2_Number exceeds the area specified by s1_Start.

• if the data specified by s2_Number is recognized as "0".

• if the converted result exceeds the area specified by d.

• if the converted result exceeds the 32-bit area.

• if ASCII code not corresponding to decimal numbers (0 to 9) or ASCII characters (+, -, and SPACE) is specified.