F69_WUNI

The function combines the two values at inputs s1 and s2 with the value at input s3_Mask by bit-unit processing. The result of the function is returned at output d.

Parameters

Input

s1, s2 (WORD, INT, UINT)

16-bit area or 16-bit equivalent constant to be compared

s3_Mask (WORD, INT, UINT)

16-bit area that stores master data for combination or 16-bit equivalent constant data

Output

d (WORD, INT, UINT)

16-bit area for storing calculated result

Remarks

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

• The data-unite is calculated as follows:

  • [d] = ([s1] AND [s3_Mask]) OR ([s2] AND (NOT[s3_Mask]))

  • When the value at input s3_Mask = 16#0, the value at input s2 is returned at output d.

  • When the value at input s3_Mask = 16#FFFF, the value at input s1 is returned at output d.

• The variables s1, s2, s3_Mask and d have to be of the same data type.

Error flags

sys_bIsEqual (turns to TRUE for one scan)

if the calculated result is 0.