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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. In this example
the constant (4) is assigned to the function at input n. You may, however, declare a variable in the
POU header instead.
LD
ST
When programming with structured text, enter the following:
IF
DF(start)
F128_DRCL( n:= 4,
d=> data);
END_IF;
THEN
Bit-shift instructions
601
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