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Communication between 2 WebHMIs via internet

Sometimes you need to have a connection between far systems, e.g. like in the following picture:

You might want to automatically control supply pumps depending on the water level in a far water tower or reservoir.

With the WebHMI and Level2 connectivity options it is done with ease:

  1. Connect both WebHMIs to Level2 and and remember remote node (reservoir side) IP address in the VPN network
  2. Turn On (Modbus TCP Server) on the water redervoir side
  3. Enable routing for pump side WebHMI to the remote peer node
  4. Create Modbus TCP connection on the pump side WebHMI using IP address from (1)

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