PLC Integration by SCADA

[Jairus]

Hello Experts, Good day to you all. I just can’t figure how I will integrate five S7-300 PLC. CPU 315-2dp. (1.Blow moulding-> 2. filler-> 3. labeller-> 4. packer-> 5. Palletizer) I just want to get the speed of its machine, the output rate and the alarm, this is purely monitoring, archiving, no need to control anything here. I planning about SCADA system. I’m thinking if I could do the same way in my previous project, which I’ve done in profibus master/slave for two s7-300. But this time the five PLC’s already set the profibus as master to the danfoss drive, sew drives, ET200s and many more profibus slave. I plan to buy 1 PLC as master and I will set all as slave, but how since all the five existing PLC, its profibus already configured as master. Thank you very much. All your inputs is really appreciated.