ISA 100.11A connectivity Technologies in IoT

Introduction 

International Society of Automation.

Designed mainly for large scale industrial complexes and plants.

More than 1 billion devices use ISA 100.11A

ISA 100.11A is designed to support native and tunneled application layers.

Various transport services, including 'reliable', 'best effort', 'real-time' are offered.

network and transport layers are based on TCP or UDP / IPv6.

Data link layer support mesh routing and Frequency hopping.

Physical and MAC layers are based on IEEE 802.15.4

Topologies allowed are :

• Star/tree
• Mesh

Permitted network include:

• Radio link
• ISA over Ethernet
• Field buses

 Application Support Layer delivers communications services to user and management processes.

It can pass objects (method, attributes) natively within the ISA 100.11A protocol.

A tunneling mode is available to allow legacy data through the ISA.11A network.

* RD=routing device
* NRD=Non-routing device
*H=Handheld device
*B=backbone device

Features

• Flexibility
• Support for multiple protocols
• Use of open standards
• Support for multiple applications
• Reliability (error detection, channel hopping)
• Determinism (TDMA, QoS support)
• Security

Security

• Security is fully built-in to the standard.
• Authentication and confidentiality services are independently available.
• A network security manager manages and distributes keys
• Twin data security steps in each node:

        - data link layer encrypts each hop.

        - Transport layer secures peer-to-peer communications.

ISA 100.11A Usage Classes