IP address based on the concept of hosts and networks. Basically any host on the network capable of receiving and transmitting IP packets on the network, such as a workstation / SCADA RTU or SCADA smart field devices such as smart control valves. It is not confused with the server: Server and client workstations all IP hosts.
The Internet has evolved so during the last 15 years. Increasing the availability of Internet and wireless technologies, SCADA vendors to find a remote access solution, which allows almost any telemetry and monitor devices that will connect to the Internet and thus the terminal of your choice. This allows you to connect to a network or device, without limited to the office.
Wireless networks come in many flavors and styles. These include:
• Satellite networks
• Permission VHF and UHF point to point and multi-point radio.
• Distribution of license free spectrum (900 MHz, 2.4 GHz, 5.8 GHz and 24 GHz).
• Point to Point Microwave.
With a narrow range within a building or campus, wireless data can be moved from node to node with a private radio network owned by spread spectrum. A wider range requires some form of public network. The most common method is to dial up the cellular, Cellular Digital Packet Data (CDPD) network or by using the Specialized Mobile Radio (SMR) or private wireless network operators.