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Cable connection PC to PLC S7-300

Posted: Thu Mar 01, 2018 12:39 pm
by AlekMalek
We have S7-300 and doesn't have cable to it. It seems that conneciton realize with RS-232 cable.
Can me make dirrect parallel connection to PC or we need USB - RS-232 special cable based on DB9 microschene?

Re: Cable connection PC to PLC S7-300

Posted: Thu Mar 01, 2018 4:23 pm
by CoMod
Siemens PLC use electrical interface RS-485 (DB9 socket) with Profibus /MPI hardware logic protocol http://s7detali.narod.ru/NET/PB.html
USB/PCI PC adapter
http://s7detali.narod.ru/CP5511/CP5711.html
http://s7detali.narod.ru/CP5511/CP_USB_MPI_Ali.html

Контроллеры Сименс используют электрический интерфейс RS-485 (DB9 разъём) с аппаратно реализуемым логическим протоколом Profibus /MPI