11/25/2003 - The share of industrial electronic temperature controller purchases having communication bus/network connectivity is expected to increase significantly, according to a recent Venture Development Corporation (VDC) study entitled "The Global Market For Industrial Electronic Temperature Controllers, Eighth Edition." In a survey of users (end users, OEMs, systems integrators, and others), VDC found that less than half of microprocessor-based single loop controllers and 55% of multiple loop controllers purchased in 2002 have communication bus/network connectivity. These shares are expected to increase to about 64% and 72%, respectively, in 2005.
Relative to the buses/networks being used and expected to be used, VDC found in North America standard serial interfaces (RS-232, and RS-235) being used extensively, but are expected give way to other types. Among North American users in the survey:
RS-232 is the most used communication bus/network with the microprocessor-based single loop temperature controllers purchased in 2002. RS-485 accounted for the second largest share, with Ethernet third. Among these users Ethernet is expected to overtake RS-232 and RS-485, and account for the largest share in 2005.
RS-232 also is the most used communication bus/network with the microprocessor-based multi-loop temperature controllers purchased in 2002. However, here Ethernet already accounts for the second largest share, and is expected to account for the largest share in 2005. Ethernet is proven, inexpensive, fast, and reliable.
Foundation Fieldbus is much more extensively used with the microprocessor-based multi-loop controllers, than with the single loop controllers and is expected to account for the second largest share in 2005.
Usage of wireless connectivity is expected to grow and account for the fourth and fifth largest shares respectively for the single and multi-loop controllers in 2005.
While Ethernet is an international standard, it specifies only the "physical" and "data link" layers of the Open System Interconnection (OSI) model. Thus, in usage, additional protocols are required. Among the North American users in this survey TCP/IP was identified as the most used "network" and "transport" layer protocol, with Ethernet/IP as the most used "application" layer protocol. These are expected to remain the most popular in 2005. Gain is usage is expected for the HSE, SMTP, and XML application layer protocols.
Founded in 1971, VDC is a technology market research and consulting firm that specializes in industrial and commercial electronics, computing, communications, software and power systems markets. For further information about "The Global Market for Industrial Electronic Temperature Controllers, Eighth Edition" or any other VDC service contact: Marc Regberg, Vice President, Phone: 508-653-9000, xt. 111, Email: firstname.lastname@example.org
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