Panasonic FP Series

Arithmetic instructions
441
Part III FP Instructions
For Relay T/C Register Constant
s1, s2, s3 WX WY WR WL SV EV DT LD FL dec. or hex.
d - WY WR WL SV EV DT LD FL -
No. IEC address Set If
R900B %MX0.900.11 for an instant  the calculation results in an overflow or
an underflow of output d.
R9009 %MX0.900.9 for an instant  the input value s3 is 0.
In this example the input variables input_value and negative_offset are declared. However, you
can write constants directly at the input contact of the function instead.
Operands
Error flags
Example
In this example, the same POU header is used for all programming languages. For an 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 is set to TRUE, the function is carried out. It adds the corresponding
negative offset value = 10 to the negative input_value = -12. However, you can declare a variable
in the POU header and assign it to the function’s input in the body.
LD
ST
IF start THEN
F289_ZONE( negative_offset, 20, input_value, output_value);
END_IF; (*negative_offset=neg. offset, 20=pos. offset *)