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Appendix 2 – PPI cables

Chapter 9.

9. Appendix 2 – PPI cables

9.1 Standard serial eWON

You can use a standard straight RS485 cable with the following pinout:

eWON S7-200

DB9-Female DB9-Male

pin 3 pin 3

pin 5 pin 5 (or pin 2)

pin 8 pin 8

You can also use a standard Siemens MPI/Profibus cable 6ES7901-0BF00-0AA0 or equivalent

but it requires an additional DB9 female/female mini-gender changer to connect on an

eWON featuring a standard serial port.

9.2 eWON with MPI port

To make a PPI link between an eWON with MPI-port and a S7-200 PLC, you can use a standard

Siemens MPI/Profibus cable.

A standard Siemens references is 6ES7901-0BF00-0AA0.

There are compatible cables available on the market, but they do not necessarily have all of the

same features such as switchable termination resistors.

eWON offers a compatible, unshielded cable:

P/N EW40912 - SUBD9/SUBD9 cable for Siemens S7, Length: 2 meter

Max baudrate is 1.5 MBit/s.

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Siemens S7-200PLC Manual de usuario Pagina 20