ISA100 Wireless™ Standard

ISA100 Wireless (IEC 62734) is an international, industrial wireless networking and communications standard engineered to serve the needs of process industries. With native IPv6 networking and object architecture, ISA100 Wireless extends the Industrial Internet of Things (IIOT) to wireless. End users can select ISA100 Wireless Compliant™ devices from a best-of-breed pool of suppliers with assurances of device interoperability. ISA100 Wireless enables automation engineers to quickly create, modify, optimize, and scale wireless networks that are open, interoperable, and reliable for their most critical applications. ISA100 Wireless is the first standard in the ISA100 family of open standards.

Built from the ground up and driven by user requirements, the ISA100 Wireless standard received formal ANSI approval in January 2012 and approval as IEC 62734 in September 2014. ISA100 Wireless is the only IPv6, 6LowPAN industrial protocol designed for industrial automation. ISA100 Wireless meets requirements of ETSI EN 300 328 v1.8.1 for coexistence with nearby 2.4 GHz radio devices. ISA100 Wireless is also known as ISA-100.11a.


The Nivis ISA100.11a System is composed of the following functional entities:

  • Field device—Routing
  • Field device—Non-Routing
  • Backbone Router
  • Gateway
  • System Manager
  • Security Manager

The architecture of an ISA100.11a system is flexible, allowing various network topologies to be formed by combining the various functional entities listed above, based upon the application requirements. The Nivis ISA100.11a System incorporates firmware, hardware and software for all its functional entities, thus providing a comprehensive solution.

Field devices form wireless packets coined as DLL subnets. Depending on the application and the available network backbone infrastructure, there are two major network topologies: ISA100.11a network with no backbone and ISA100.11a network with backbone.

ISA100.11a Network with No Backbone

This topology addresses customer needs for smaller deployments. It concentrates all wireless field devices into a single DLL subnet that communicates directly with the gateway and the System/Security Manager without relaying the packets over an infrastructure backbone. This topology allows for reduced communication latencies as well as better predictability of network behavior.

ISA100.11a Network with Backbone

When deployments stretch over a larger geographical area such as interconnected halls within a plant, the favored topology is an ISA100.11a network that connects multiple DLL subnets through a network backbone. This topology facilitates extension of the ISA100.11a network, both geographically as well as in terms of number of devices.

The DLL subnet ends at the Backbone Router, which provides a communication link between the wireless field devices and the backbone infrastructure. The technology employed in the backbone is not mandated by the ISA100.11a workgroup. Both wireless and wired backbones are viable options.