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hey all,
i've got the siemens step7-200 cpu 222 & the analog to digital extension EM 231 and i've a task to do which is to measure the voltage and current flowing in my local network of electricity and to draw their wave forms which needs very high accuracy as the frequency in the network is...
i have a problem with my Step7-200 siemens plc i've got MicroWin and WinCC flexible on my PC ,the problem is that the PLC recieves and sends signals with MicroWin but it doesnt recieve anything from the WinCC flexible so i dont know where the problem is??
any help???
communicating plc with scada
plz i want to know how a SIEMENS S7-200 plc can be connected with a WinCC program
i heard we must use a multimaster ppi cable
i've got the pc/ppi cable it connected the PLC with the PC but the WinCC program(scada) isn't connected to the PLC so any help???
i would like to have the schematic & design of this cable :rs232/ppi Multi-Master cable that connects the siemens S7-200 to a normal PC does anyone have
Thnx
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