For Ewon devices including a serial or MPI port, the Ewon device can act as an ISOTCP to PPI gateway.

The gateway settings are also accessible from the S7200 IO Server setup page.

The fields available to you will depend on whether you are configuring the serial port or the MPI port of your Ewon device.

Gateway Configuration (MPI and Serial)

The Gateway Configuration section of the IO Server setup screen only appears if your hardware configuration includes a serial or MPI port.

Set the Destination PPI Address value to be the identifier for the PLC when the Ewon device is acting as an ISOTCP to PPI gateway.

Communication Setup (MPI Only)

The MPI/PROFIBUS/PPI MultiMaster Setup section of the IO Server setup screen only appears if your hardware configuration includes an MPI port.

The MPI port cannot be used by the S7-200 IO server and the S73&400 IO server at the same time.

Set the following parameters

• In the Protocol Type field, select PPI MULTIMASTER.
• Set the Baudrate as required to match the settings in your PLC.
• Set the MPI/PROFIBUS/PPI MultiMaster Address field to be the address for the Ewon device on the PPI link.
• Enter the highest station address polled by the Ewon device in the MPI/PROFIBUS/PPI MultiMaster Highest Station Address field.

COM Setup (Serial only)

The COM Setup portion of the IO Server setup screen only appears if your hardware configuration includes a serial port.

The serial port on the Ewon device must be in RS485 mode.
For the FLA 3301 – 2 Serial Port Extension card:

• Port S2 is fixed RS232 mode.
• Port S1 is configurable with dip switches.

Additional configuration may also be required through the web interface in the Serial ports page.

Set the following parameters:

• Set the COM Port to the port to which the PLC is connected.

  An IO Server can be associated with only one serial port. Similarly, multiple IO Servers cannot use the same serial port.

• Set the Baudrate, Parity, Databits, and Hardware Mode as required to match the settings in your PLC.
• The Ewon device with a serial port can act as a monoMaster or communicate on a PPI multiMaster bus.
  If you are configuring the serial port as PPI MultiMaster, you need to configure PPI Address and Highest Station Address fields.