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Wireless Networks

Seamlessly integrate and expand networks with self-organizing, secure and reliable wireless technology.

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Build stronger, more robust networks with wireless technology

Emerson’s wireless technologies can dramatically impact plant operations by enhancing the benefits of existing PlantWeb digital architecture in wireless field and plant network applications. These solutions seamlessly integrate wireless technologies with existing wired networks to provide a complete and open-standard network. This wireless architecture is highly secure, reliable and easy-to-use, engineered to improve workforce productivity and plant management.

Wireless Field Networks

Emerson’s wireless architecture is designed as a self-organizing network based on the IEC 62591 WirelessHART standard. Secure, robust and infinitely configurable, this self-healing, mesh technology features data reliability of greater than 99% and ensures an interoperable, adaptive and flexible approach to wireless.

The application versatility of wireless instrumentation enables users to select power based on an economical, sustainable, or convenience perspective. Emerson’s SmartPower Solutions fit any need; specially designed power modules are easy to install and deliver predictable lifetimes up to ten years, energy harvesting solutions offer a sustainable option, and power scavenging technology brings wireless to existing infrastructure without the need for additional power.

The highest level of network integrity is achieved by allowing devices to communicate with one another, allowing each device to function as a network connector. The gateway locates the best communication path for each device while continuously monitoring these paths. In the event of a temporary obstruction, the gateway automatically reroutes the signal to an adjacent device.

  • Time diversity - WirelessHART employs Synchronized Time Division Multiplexing in which timeslots are dynamically managed
  • Coding diversity – A specific transmission can be easily separated from other communication noise
  • Frequency diversity – WirelessHART utilizes channel hopping
  • Path/Space diversity – Redundant communication paths are provided through the mesh network
  • Power diversity – Transmission power of radio links adjusts to limit the RF pollution against other users of the spectrum

Wireless Plant Networks

Our wireless architecture uses rugged wireless access points from Cisco to provide Wi-Fi coverage. The Cisco® Aironet 1550 Series Outdoor Wireless Mesh Access Points are Class I, Div 2 (ATEX Zone 2) certified and support dual band radios compliant with IEEE 802.11 a/b/g/n standards. This is a universal standard network infrastructure that easily integrates with all wireless applications in your plant, such as security, personnel and asset tracking, and mobile worker productivity solutions.

Cisco Prime Infrastructure enables network managers to design, control and monitor enterprise wireless networks from a single location. It oversees wireless LAN controllers, which are responsible for network-wide wireless functions, such as security policies, intrusion prevention, RF management, QoS and mobility. Cisco Prime also facilitates load balancing, traffic management, policy provisioning, network optimization, troubleshooting, user tracking and monitoring for end-to-end security.

The Cisco Prime Infrastructure is the industry’s leading platform for wireless LAN planning, configuration, management and mobility services and is supported by Cisco Wireless Intrusion Prevention Services for network security. This architecture provides a cohesive wireless communications platform across the physical and functional areas of plant operations, enabling the shared network to support diverse applications.

  • Intelligent wireless routing (based on LWAPP) allows a remote access point to dynamically optimize and determine the best network connection route within the mesh
  • LWAPP also performs a smoothing function to signal condition information and ensure network stability
  • Access points can recover and return to operational status (self-heal) in response to interference or outages
  • Engineered with mechanisms that guard against stranded access points as well as a software-based recovery mechanism
  • Automatic recovery from misconfigurations, such as wrong IP addresses, DHCP server errors, bridge group name typos or mis-provisioning of the network
  • The “exclusion list” algorithm allows a child node to exclude a parent node in case of a routing problem, and only returns to the relationship based on the parent node’s subsequent behavior
  • Cisco QoS standard is based on 802.11e-2005, an amendment to the IEE 802.11 standard, which defines QoS enhancements for WLAN applications through modifications of the MAC layer for precise configuration. QoS-enabled access points request specific transmission parameters to increase effectiveness of complex applications.
  • The Hybrid Coordination Function (HCF) enhances network capabilities, offering two methods of channel access that help differentiate high-priority and low priority traffic
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