ISA-100.11a-2011, “Wireless Systems for Industrial Automation: Process Control and Related Applications,” has been approved by the International Electrotechnical Commission (IEC) as a publicly available specification, or PAS.

This follows its approval earlier this year as an International Society of Automation (ISA) standard, developed per ISA’s open consensus process as accredited by the American National Standards Institute (ANSI).

ISA-100.11a-2011 was developed to provide reliable and secure wireless operation for noncritical monitoring, alerting, supervisory control, open loop control and closed loop control applications. The standard defines the protocol suite, system management, gateway and security specifications for low-data-rate wireless connectivity with fixed, portable and moving devices supporting very limited power consumption requirements.

The application focus is to address the performance needs of applications, such as monitoring and process control, where latencies on the order of 100 ms can be tolerated, with optional behavior for shorter latency.