Telecontrol with GPRS and HSPA via VPN The mobile data services allow you to transmit data wirelessly and inexpensively between widely distributed infrastructure systems. GPRS stands for General Packet Radio Service, and is an efficient, full-coverage Internet-based data service within the GSM mobile phone network. Operating costs for data transmission result from the amount of data actually transmitted and are hence predictable. GPRS, UMTS and HSPA are best suited for distributed applications that collect wide-ranging data (fill levels, flow rates, messages, alarms), and transmit it to a PC or supervisory control system. The process also works the other way around, i.e. commands and target values can be sent to the remote stations. VPN (Virtual Private Network) ensures that data will be transmitted securely from the main station to the substation. VPN tunnels are used to enable remote stations located outside the control system's network to access the internal network. The substation (client) thereby establishes a VPN connection to the accustomed VPN gateway of the control system or main station. Using this connection, data can be exchanged as if the device were part of the main station's local network. Technical information No. , Rev. 3.2, Stand 11/2016, Page 1 of 4 Panasonic Electric Works Europe AG, Tel.: 089 45354-2748, Fax: 089/45354-2222, e-mail:
[email protected], Internet: www.panasonic-electric-works.com Fields of use: As a rule, the VPN solution is used for large, peripheral facilities for secure operation that is readily available. It is particularly well suited for automating facilities that are spread out geographically yet can be viewed as one local network.