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2010 | OriginalPaper | Buchkapitel
Overview
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This chapter provides a general description of the WirelessHART standard. The HART standard has been in existence for more than 20 years. It has the most field devices deployed in the world among all fieldbus networks. In its latest release, version 7, the WirelessHART component is introduced to bring wireless technology to the process field. The WirelessHART standard is a secure networking technology operating in the 2.4GHz ISM radio band. It utilizes IEEE 802.15.4™ compatible DSSS radios with channel hopping on a packet by packet basis. The WirelessHART standard shares the same application layer with the wired counterpart. It has its own network layer, data link layer, and physical layer, which are briefly described in Section 1.3. Section 1.4 gives a simple example of a WirelessHART application.