This path was duplicated on purpose - to show the advantages
and disadvantages of using a cheaper, zero-one system and more
expensive connection – PROFIBUS DP industrial LAN. Using
that kind of connection enables the working program exchange.
Moreover, there is obtained full application of memory
registry of the RJ3iB controller. Memory registry permit to keep
INTEGER values – 8 bits (using binary signal connection allows
only 1 bit of memory – value zero or one).