Panasonic FP Series Programming Manual page 594

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.
LD
ST When programming with structured text, enter the following:
IF DF(start)
F123_RCL( n:= 4,
d=> rot_value);
END_IF;
THEN
Bit-shift instructions
593