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Palletizing PowerPack

Hello to all, does anyone has an experience with usage of Palletizing PowerPack in real projects. Programming with this PP is pretty easy and really help a lot, but how do you actually make it work in communication with PLC. PP is generating big number of simulated signals in order to process rapid program, but how and which signals among those sim signals you access from PLC and control palletizing process created by this PowerPack. Do you have to create some sort of cross connections between PLC signals and PowerPack default created signals, because I don't see set of designated signals created in order to establish interface between PLC and PP rapid program. Thanks in advance.