F71_HEX2A

Converts the data byte-wise from the 16-bit area specified by s1_Start to ASCII codes that express the equivalent hexadecimals if the trigger EN is in the TRUE-state. The number of bytes to be converted is specified by s3_Number. The converted result is stored in the area starting with the 16-bit area specified by d_Start. ASCII code requires 8 bits (one byte) to express one hexadecimal character. Upon conversion to ASCII, the data length will thus be twice the length of the source data.

Parameters

Input

s1_Start (WORD, INT, UINT)

starting 16-bit area for hexadecimal number (source)

s3_Number (INT)

specifies number of source data bytes to be converted

Output

d_Start (WORD, INT, UINT)

starting 16-bit area for storing ASCII code (destination)

Remarks

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

• The two characters that make up one byte are interchanged when stored. Two bytes are converted as one segment of data.

  

  1.  (1) Hexadecimal data
  2.  (2) Converted result

• ASCII HEX codes to express hexadecimal characters:

  Hexadecimal number	ASCII HEX code
  0 1 2 3 4 5 6 7 8 9 A B C D E F	16#30 16#31 16#32 16#33 16#34 16#35 16#36 16#37 16#38 16#39 16#41 16#42 16#43 16#44 16#45 16#46

Error flags

sys_bIsOperationErrorHold (turns to TRUE and remains TRUE)

• if the byte number specified by s3_Number exceeds the area specified by s1_Start

• if the calculated result exceeds the area specified by d_Start.

• if the data specified by s3_Number is recognized as "0".

sys_bIsOperationErrorNonHold (turns to TRUE for one scan)

• if the byte number specified by s3_Number exceeds the area specified by s1_Start

• if the calculated result exceeds the area specified by d_Start.

• if the data specified by s3_Number is recognized as "0".