Programming Example, Fp-Fns Block Profinet Io - Panasonic FPSIGMA Technical Manual

5.8 Programming Example, FP-FNS Block Profinet IO

After you install the FNS Library, you can start programming.
1. Create the Data Unit Types (DUTs) for inputs and outputs.
2. Create input and output variables of the type of DUT generated in the previous
step in the global variable list.
3. Generate the configuration data table for inputs and outputs by using the function
FNS_InitConfigDataTable (see page 49). Make sure that the size of the
FNS_InitConfigDataTable output variable corresponds to the DUT.
4. Create pointers of the input, output and ConfigDataTable variables and provide
them to the FNS_ProfinetIO function block together with the corresponding
variables.
Data Unit Types (DUTs)
In the following picture you can see all possible data types and how the different variables
(16-bit, 32-bit and 64-bit) can be defined.
64-bit variables are declared by creating a two-dimensional array, whereas the second
dimension must have a size of four. The first dimension specifies the number of elements of
this type.
The FNS PROFINET IO Device handles the plugging of modules and submodules
automatically according to the following scheme:

A DAP (Device Access Point) is plugged into Slot 0

Modules are added beginning with the DUT Inputs followed by the DUT Outputs

Each module occupies a single slot

Each entry of a DUT results in one module being added

One-dimensional array entries in a DUT result in an equal number of modules being
added

Two-dimensional array entries in a DUT (used for 64-bit variables) result in the same
number of modules being added as the size of the first dimension of the array.
Programming Example, FP-FNS Block Profinet IO
65