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In this example, the same POU header is used for all programming languages. For an example
Example
using IL (instruction list), please refer to the online help.
POU header
All input and output variables used for programming this function have been declared in the POU
header.
Body
When the variable start changes from FALSE to TRUE, the function is carried out. It shifts out 4
bits (corresponds to one position in a hexadecimal representation) to the left. The 4 bits in data
resulting from the shift are filled with zeros. At input n the constant 4 is assigned directly to the
function. You may, however, declare an input variable in the POU header instead.
LD
ST
When programming with structured text, enter the following:
IF
DF(start)
F103_DSHL( n:= 4,
d=> data);
END_IF;
THEN
Bit-shift instructions
565
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