Product category:
Fieldbus systems, Fibre-optic systems
News Release from: Yokogawa Europe - Industrial Automation | Subject: Vnet/IP
Edited by the Processingtalk Editorial
Team on 31 January 2008
Vnet/IP unanimously accepted as IEC
Standard
The Yokogawa Vnet/IP control network protocol for process automation has been unanimously accepted by the IEC as a part of international standard IEC 61784-2 Ed.1.0
The Vnet/IP plant control network protocol is based on 1Gbit/s high-speed Ethernet and features both the openness of Ethernet and the reliability and real-time capability required in plant control Concurrent with the Yokogawa development of the Vnet/IP control network protocol for the flagship Centum CS 3000 R3 system, the company has been actively engaged from the development stage in standardisation activities with a view to this receiving approval as an international standard control network
This article was originally published on Processingtalk on 25 Jul 2008 at 8.00am (UK)
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Vnet/IP was accepted by the IEC for publication as Publicly Available Specification (PAS) No IEC/PAS 62405/Ed.1 in April 2005.
This was an important step in the direction of being accepted as an international standard.
PAS is a mechanism for popularising new technologies in fields where technological advances occur quite rapidly, allowing for the public disclosure of specifications before the IEC officially certifies the technologies as international standards.
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Masatoshi Nakahara, Vice President of the Industrial Automation Business Headquarters, had the following to say about the IEC approval: "The fact that Vnet/IP has been accepted by the IEC means that Vnet/IP will enter wide use as a standard network protocol and be used by other manufacturers in combination with their own products.
We expect that Vnet/IP will grow and develop.
Yokogawa has gained recognition for its excellent technological capabilities and product quality.
We expect that this achievement will further increase the Yokogawa visibility in the global plant control systems market".
* Vnet/IP is a core building block of the Yokogawa's VigilantPlant solutions that promise to bring operational excellence to visionary plants, creating an environment where plant personnel can 'See Clearly, Know in Advance, and Act with Agility'.
Using advanced Yokogawa technology, Vnet/IP achieves both TCP/IP general-purpose communications and UDP/IP-based control communications on a single network.
TCP/IP is used for general-purpose communications with PCs, subsystems, and human interface stations (HISs).
UDP/IP is used for control communications between HISs and field control stations.
Even with large-scale plants, Vnet/IP achieves rapid response, with data update intervals of one second or less.
In addition, the network can be made dual-redundant to instantly switch to another network path if a network path fails, making this a highly reliable control system.
Networks can also be configured with general-purpose network equipment such as layer 2 or layer 3 switches.
* The IEC (International Electrotechnical Commission) activities for the international standardisation of Vnet/IP are being carried out in TC65, the IEC industrial process measurement and control working group.
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