EES offers a large variety of telecontrol systems to transmit data over large distances about 10km or more. In particular wireless transmission over registration and free of charge use radio bands is a EES USP.
To secure the data transmission between each station, an AES based encryption can be activated. This symmetric process is executed by a pre-shared key, which can be generated dynamically by the parameterization software and can be different for each station.
Moreover a relaying of data can be carried out over each station, in case a line of sight is not available. By this analog and digital values as well as serial and IP based Modbus data can be exchanged reliably by this technique.