The selected FPA index modified by the F_Set_FPA_index( fpa ) instruction can be modified at any
time. By default, the FPA index is 1 and if only one FPA is used then fpa index does not need to be
initialized or modified. When the fpa index 1 to 64 is used, then the result is coming back to
application software from the single API-DLL via transparent Multi-FPA dll. When fpa index is 0
(ALL-FPAs) and results are the same from all FPAs, then the same result is passing back to
application software. If results are not the same, then the Multi-FPA dll is returning back value -1
(minus 1) and all recently received results can be read individually using function
F_LastStatus( fpa )
Most of the implemented functions allows to use the determined fpa index 1 to 64 or 0 (ALL-FPAs).
When functions return specific value back, like read data etc, then only determined FPA index can
be used ( fpa index from 1 to 64). When the fpa index is 0 (ALL-FPAs) then almost all functions are
executed simultaneously. Less critical functions are executed sequentially from FPA-1 up to FPA-64
but that process can not be seen from the application software.
Figure 1.3
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