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Connecting an S7-200 PLC to a WebPort Using Serial Communications

You can connect an S7-200 PLC to a WebPort via serial communications.

See also About Networking Deployments

You connect the S7-200 to the WebPort as follows:

  1. Log onto your WebPort. If you need additional help accessing your WebPort, see Logging onto the WebPort User Interface
  2. Access Configure:Serial Communications Setup. See Configuring Serial Communications Setup
  3. Select the 9600 Baud Rate, even Parity, and RS-485 Connection Type. All other default settings remain the same.
  4. Click Submit. The software retrieves the data, and informs you when the data is successfully modified. To continue, click OK.
  5. Next, add the PLC to the Devices list on the WebPort. See Adding Devices. The protocol setting for an S7-200 PLC is PPI. The other setting(s) adjust to match the protocol.
  6. Click Test Device Connection. If you have successfully connected to your PLC, the software confirms the connection is successful. Click OK.
  7. Next click Submit on the Device Properties dialog. The PLC appears on the Devices dialog.
  8. If you need to know how to configure an S7-200 PLC so that it is able to connect to the WebPort, use the manual provided with your PLC.
  9. Next, if needed, add passthrough settings. Return to the Configure:Serial Communications Setup. See Configuring Serial Communications Setup.
  10. From the dialog, click the Pass-thru enabled checkbox. The protocol setting for an S7-200 PLC is PPI.
  11. Next, click Submit. The software confirms the data modification is successful. Click OK.

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